| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Dahlonega,
                GA Lumpkin Co. United States | GA 9 (Dawsonville Hwy.) / GA 52 (34.52029, -84.04569) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2021 | |
| Winona,
                MN Winona Co. United States | US 14-US 61 / STH 43 (44.02956, -91.62216) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2022 | https://www.youtube.com/watch?v=xA9c17OwsGk | 
| Vancouver,
                WA Clark Co. United States | SR 500 (NE Fourth Plain Rd.) / NE182nd Ave. (45.67192, -122.48864) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 26.8221 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2022 | Compact roundabout. WSDOT project. Completed August 20, 2022. Colored apron with asphalt interior. | 
| Mantua,
                OH Portage Co. United States | SR 82 / Chamberlain Rd. (41.30863, -81.28112) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.record-courier.com/story/news/2022/07/30/mantua-roundabout-finally-open-odot-says-improve-safety/10173568002/ | 
| Castle Rock,
                CO Douglas Co. United States | Plum Creek Pkwy. / S Eaton Cir. / Eaton St. (39.36073, -104.83311) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.1960 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2020 | Elliptical shaped. ICD = 145 ft x 115 ft. Year Completed estimated (2020-2021). | 
| Castle Rock,
                CO Douglas Co. United States | S Ridge Rd. / Rapport Dr. (39.35511, -104.81475) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 32.0040 | Other (At-Grade) Single-Lane | 2020 | |
| Castle Rock,
                CO Douglas Co. United States | Autumn Sage St. / Valley View Dr. (39.38026, -104.81919) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 62.4840 | Other (At-Grade) Single-Lane | 2016 | Year Completed estimated (2015-2017). | 
| Castle Rock,
                CO Douglas Co. United States | N Rocky View Rd. / Valley View Rd. / High Point Rd. (39.38189, -104.81125) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 62.4840 | Other (At-Grade) Single-Lane | 2016 | Year Completed estimated (2015-2017). | 
| Castle Pines,
                CO Douglas Co. United States | Westbridge Dr. / Cross Canyon Trl. (39.45951, -104.85287) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.2920 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2018-2019). | 
| Parker,
                CO Douglas Co. United States | Cross Canyon Trl. / Canyon Forge Dr. (39.47008, -104.85988) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 51.8160 | Other (At-Grade) Single-Lane | 2018 | Year Completed estimated (2018-2019). | 
| Celina,
                TX Collin Co. United States | Punk Carter Pkwy. / Kinship Pkwy. (33.28419, -96.76992) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2018 | |
| Celina,
                TX Collin Co. United States | W Ownsby Pkwy. / Etta Terrace (33.27912, -96.78895) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 47.2440 | Other (At-Grade) Single-Lane | 2020 | |
| Prosper,
                TX Collin Co. United States | Richland Blvd. / S Coleman St. (33.22432, -96.80275) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 53.3400 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2020 | |
| McKinney,
                TX Collin Co. United States | Limousine Pkwy. / Rivercrest Dr. (33.24434, -96.65728) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.0144 | Other (At-Grade) Single-Lane | 2020 | |
| Fulshear,
                TX Fort Bend Co. United States | Parkside Passage Dr. / Fulshear Trace (29.67645, -95.89920) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 33.5280 | Other (At-Grade) Single-Lane | 2020 | |
| Fulshear,
                TX Fort Bend Co. United States | Texas Heritage Pkwy. / (unknown) (29.69670, -95.87960) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2021 | |
| Richmond,
                TX Fort Bend Co. United States | Texas Heritage Pkwy. / (unknown) (29.68788, -95.87474) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2021 | |
| Katy,
                TX Waller Co. United States | Pederson Rd. / (unknown) (29.77246, -95.88083) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2021 | |
| Blackhorse Ranch South,
                TX Harris Co. United States | Autumn Light Ln. / Winding Star Ln. (29.95095, -95.71406) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 39.6240 | Unknown Single-Lane | 2018 | Constructed as traffic circle around 2004 with no splitter island on south leg and unknown control. Painted splitter island on south leg added 2017-2019. | 
| Houston,
                TX Harris Co. United States | Point Park Dr. / (unknown) (29.90706, -95.63522) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Cypress,
                TX Harris Co. United States | Fairfield Green Blvd. / Fairfield Park Dr. (30.00533, -95.75155) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Cypress,
                TX Harris Co. United States | Fairfield Green Circle (30.00584, -95.74990) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | Building in central island. | |
| Cypress,
                TX Harris Co. United States | Golden Elm Circle (30.00926, -95.75279) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | Pedestrian access to central island. | |
| Magnolia,
                TX Montgomery Co. United States | Magnolia Ridge Blvd. / Jewett Meadow Dr. / Rogerdale River Dr. (30.21121, -95.73470) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | ||
| Celina,
                TX Collin Co. United States | Choate Pkwy. / Kinship Pkwy. (33.29258, -96.76976) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 60.9600 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2021 | Interim scenario - ultimate lane configuration striped out on initial build. | 
| Fishers,
                IN Hamilton Co. United States | Southeastern Pkwy. / Cyntheanne Rd. (39.96632, -85.88105) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2022 | Opened July 29, 2022. | 
| West Richland,
                WA Benton Co. United States | Bombing Range Rd. / Keene Rd. (46.26271, -119.34237) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2005 | Free-flow bypass lane on east leg. Opened October 2005. Plans underway to replace with signalized intersection: https://www.tricitiesbusinessnews.com/2021/12/wr-traffic-circle/ | 
| Carpinteria,
                CA Santa Barbara Co. United States | Ogan Rd. / Via Real / US 101 NB On-Ramp (34.40144, -119.51551) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.1000 | Freeway Ramps (Grade-Separated) Single-Lane | 2020 | https://www.coastalview.com/news/roadways-open-with-improvements/article_979e3586-c6f1-11ea-bc84-b3d50932177b.html | 
| Lima,
                OH Allen Co. United States | Market St. / Main St. (40.73998, -84.10498) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.hometownstations.com/news/more-downtown-parking-being-added-now-that-roundabout-in-limas-town-square-is-open/article_b354ae8e-085a-11ed-8496-e7e7595f316f.html [Note: previous intersection looked somewhat like a roundabout. Not quite round and it had stop signs on the N-S approaches and only pedestrian stop lights on E-W approaches.] | 
| Baton Rouge,
                LA East Baton Rouge Par. United States | N Stadium Rd. / Field House Dr. (30.41398, -91.18246) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2006 | On campus of Louisiana State University. | 
| Athol,
                ID Kootenai Co. United States | SR 54 / N Good Hope Rd. / N Perimeter Rd. (47.94732, -116.61237) | Rotary Existing | Other None | 4 Approaches 0 Driveways 126.4920 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | Yield signs on circulatory roadway. Elliptical shaped. ICD = 415 ft x 370 ft. | |
| Lincoln,
                NE Lancaster Co. United States | W A St. / S Folsom St. (40.79911, -96.73022) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2022 | https://www.lincoln.ne.gov/City/Departments/LTU/LTU-Projects/Projects/West-A-Street-Improvement-Project (video shows the roundabout at about 1:45) | 
| Farmville,
                VA Prince Edward Co. United States | Farmville Rd. / Kingsville Rd. (37.24605, -78.44392) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | Opened August 17, 2022. https://www.farmvilleherald.com/2022/08/kingsville-roundabout-finally-open/ | 
| Baton Rouge,
                LA East Baton Rouge Par. United States | Stumberg Ln. / Womans Way (30.38264, -91.03593) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 59.4360 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2012 | Year Completed estimated (2011-2013). | 
| Baton Rouge,
                LA East Baton Rouge Par. United States | Capitol Access Rd. / Capitol Lake Dr. (30.45808, -91.18278) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2016 | |
| Baton Rouge,
                LA East Baton Rouge Par. United States | Capitol Lake Rd. / Capitol Access Rd. (30.45818, -91.18621) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2016 | |
| Port Vincent,
                LA Livingston Par. United States | LA 16 (Petes Hwy.) / LA 447 (Walker South Rd.) (30.35577, -90.84991) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2022 | |
| Casper,
                WY Natrona Co. United States | Rustic Dr. / Rustic Ct. / Rustic Pl. (42.82970, -106.28379) | Other Existing | Unknown Unknown | 5 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Casper,
                WY Natrona Co. United States | Jasper Dr. / Preserve Cir. (42.82867, -106.28915) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands on three legs. | |
| Cheyenne,
                WY Laramie Co. United States | (unknown) / (parking) (41.10103, -104.78019) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2019-2021). | 
| Cheyenne,
                WY Laramie Co. United States | (unknown) / (parking) (41.10110, -104.78426) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2019-2021). | 
| Vestal,
                NY Broome Co. United States | Glenn G Bartle Dr. / West Dr. (42.09200, -75.96836) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | Concentric striped circulatory roadway. | |
| Niagara Falls,
                ON Niagara Canada | Victoria Ave. / Bridge St. / Thorold Stone Rd. (43.10884, -79.07338) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 64.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.youtube.com/watch?v=PJwDZ6g8cT0 | 
| Auraria,
                CO Denver Co. United States | Saint Francis Way / 11th St. (39.74196, -105.00110) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Denver,
                CO Arapahoe Co. United States | S Yosemite St. / E Wesley Dr. (39.67305, -104.88513) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| St Joseph,
                MO Buchanan Co. United States | Robidoux St. / 8th St. (39.76984, -94.85063) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 24.3840 | Other (At-Grade) Single-Lane | 2015 | Year Completed estimated (2014-2015). https://www.newspressnow.com/opinion/editorials/progress-in-a-roundabout-way/article_3dba548e-dbbf-11ec-9a02-6faad919c23d.html | 
| Saddle Rock East,
                CO Arapahoe Co. United States | E Roxbury Dr. / S Wenatchee Way (39.58699, -104.72125) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| James City,
                NC Craven Co. United States | Terminal Dr. / Airline Dr. / (parking) (35.07889, -77.03292) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | Only 2 approaches but 4 exits. Year Completed estimated (2019-2022). | 
| Palm Beach Gardens,
                FL Palm Beach Co. United States | Campus Dr. / Fairchild Ave. (26.84129, -80.08277) | Other Existing | Uncontrolled None | 4 Approaches 0 Driveways 24.3840 | Other (At-Grade) Single-Lane | 2021 | Pedestrian crossings next to circulatory roadway. Year Completed estimated (2021-2022). | 
| Red Deer,
                AB Division 8 Canada | Signet Close / Seneca Dr. (52.23689, -113.82224) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.0000 | Other (At-Grade) Single-Lane | 2017 | Year Completed estimated (2016-2017). | 
| Thief River Falls,
                MN Pennington Co. United States | STH 32 / CSAH 16 (Mark Blvd. - 125th Ave. NE) (48.09335, -96.19746) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2020 | |
| Willmar,
                MN Kandiyohi Co. United States | US 12 / 30th St. SW (CR 5) (45.12227, -95.08369) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2019-2021). https://www.dot.state.mn.us/d8/projects/willmarwye/index.html | 
| Willmar,
                MN Kandiyohi Co. United States | US 12 / (unknown) (45.12091, -95.09405) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2019-2021). https://www.dot.state.mn.us/d8/projects/willmarwye/index.html | 
| Troy,
                AL Pike Co. United States | University Ave. / Luther Dr. (Veterans Memorial Dr.) (31.79810, -85.95395) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2019-2022). | 
| Watertown,
                NY Jefferson Co. United States | Gaffney Dr. / Commerce Park Dr. / Western Blvd. (43.98164, -75.94248) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2020 | |
| Marana,
                AZ Pima Co. United States | N Sandario Rd. / W Twin Peaks Rd. (32.38076, -111.21671) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.maranaaz.gov/news/2022/5/25/traffic-alert-construction-on-a-new-roundabout-located-at-the-twin-peaks-and-sandario-road-intersection | 
| Fond du Lac,
                WI Fond Du Lac Co. United States | Fond du Lac Ave. / Rienzi Rd. / National Ave. (43.76212, -88.42196) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2021 | Combined two T-intersections. Year Completed estimated (2020-2021). | 
| Hoschton,
                GA Barrow Co. United States | GA 211 / Old Hog Mountain Rd. / Covered Bridge Rd. (34.06993, -83.78637) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | |
| Laurel,
                MS Jones Co. United States | Sawmill Rd. / Sixth Ave. / Central Ave. (31.69357, -89.13285) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2022 | Central Ave is one-way exiting roundabout. http://laurelmainstreet.com/tag/roundabout/ | 
| Parkville,
                MO Platte Co. United States | N Nevada Ave. / Thousand Oaks Pl. (39.20318, -94.74726) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Kansas City,
                MO Platte Co. United States | N Nevada Ave. / NW 62nd Pl. (39.20830, -94.74611) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Kansas City,
                MO Platte Co. United States | N Winan Ave. (N Lisbon Ave.) / N Beijing St. (39.31653, -94.70064) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 51.8160 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2004 | Concentric striped circulatory roadway. | 
| Kansas City,
                MO Platte Co. United States | N Winan Ave. (N Lisbon Ave.) / Amman Dr. (Amman St.) (39.31473, -94.69981) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 51.8160 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2004 | Concentric striped circulatory roadway. Year Completed estimated (2009-2010). | 
| Kansas City,
                MO Platte Co. United States | N Winan Ave. (N Lisbon Ave.) / N Cairo Dr. (N Cairo St.) (39.31865, -94.70078) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 76.2000 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2004 | Concentric striped circulatory roadway. | 
| Platte City,
                MO Platte Co. United States | N Apple Blossom Dr. / NW Seven Bridges Rd / (parking) (39.32728, -94.78581) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2006 | Small splitter island far away from circulatory roadway on west leg. | 
| Odenton,
                MD Anne Arundel Co. United States | Sand Lens Dr. / Water Strider Way (39.02435, -76.72793) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2020 | |
| Odenton,
                MD Anne Arundel Co. United States | Meyers Station Rd. / Conway Rd. (39.02871, -76.71317) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.2440 | Other (At-Grade) Single-Lane | 2016 | Year Completed estimated (2015-2017). | 
| Gambrills,
                MD Anne Arundel Co. United States | Nancarles Dr. / Kirchner Ln. (38.98934, -76.68111) | Other Existing | Unknown Unknown | 3 Approaches 2 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Summerfield,
                MD Prince George's Co. United States | Ridgefield Blvd. / Chatsfield Way / Valley Trail Ln. (38.89834, -76.86172) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | ||
| Capitol Heights,
                MD Prince George's Co. United States | Hampton Park Blvd. (38.87175, -76.85022) | Roundabout Existing | All-Way Yield Unknown | 2 Approaches 0 Driveways 57.9120 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2007 | Yield signs but no entrance line or yield lines. | 
| Capitol Heights,
                MD Prince George's Co. United States | Ritchie Station Ct. / (mall circulation road) (38.86528, -76.84986) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2011 | Year Completed estimated (2010-2011). | 
| Forestville,
                MD Prince George's Co. United States | Donnell Pl. (38.84109, -76.88405) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Saint Charles,
                MD Charles Co. United States | Devongate St. / Malvern St. / Promenade Pl. (38.61057, -76.93790) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 28.9560 | Other (At-Grade) Single-Lane | 2009 | Crosswalks adjacent to circulatory roadway. Year Completed estimated (2008-2009). | 
| Annapolis,
                MD Anne Arundel Co. United States | State Circle (38.97890, -76.49063) | Other Existing | Unknown Unknown | 6 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | Maryland State House in central island. | |
| Londontowne,
                MD Anne Arundel Co. United States | Millhaven Dr. / Two Rivers Dr. / Tilden Way (38.93715, -76.56159) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 33.5280 | Other (At-Grade) Single-Lane | 2006 | Converted from open intersection. Year Completed estimated (2005-2006). | 
| Londontowne,
                MD Anne Arundel Co. United States | Southdown Rd. / Landing Rd. / Decker Pl. (38.93983, -76.57211) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Davidsonville Historic District,
                MD Prince George's Co. United States | Oak Grove Rd. / (parking) (38.87858, -76.77717) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | ||
| Upper Marlboro,
                MD Prince George's Co. United States | Thomas Sim Lee Terrace / Mary Digges Pl. (38.81663, -76.81748) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Saint Charles,
                MD Charles Co. United States | Radford St. / Montpelier Dr. (38.64135, -76.97106) | Other Existing | Unknown Unknown | 3 Approaches 4 Driveways 0.0000 | Other (At-Grade) Single-Lane | Pedestrian access to central island. | |
| Saint Charles,
                MD Charles Co. United States | Ethridge Dr. / Nobility Ct. (38.62769, -76.96461) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter island on north and east legs. | |
| Potomac Heights,
                MD Charles Co. United States | Cedar Ln. / Glymont Rd. / Greenwood Pl. (38.60764, -77.14063) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Derwood,
                MD Montgomery Co. United States | Achille Ln. / Heartwood Dr. (39.12925, -77.11543) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Derwood,
                MD Montgomery Co. United States | Heartwood Dr. (39.13239, -77.11434) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Derwood,
                MD Montgomery Co. United States | Coppelia Dr. / Toboggan Ln. (39.13566, -77.11938) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Olney,
                MD Montgomery Co. United States | Martins Dairy Cir. / Old Baltimore Rd. (39.13345, -77.07382) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | Painted splitter islands. | |
| Wheaton,
                MD Montgomery Co. United States | Park Vista Dr. / Wintergate Dr. / Longmeade Crossing Dr. (39.10755, -77.05340) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2020 | Painted splitter islands added 2020. | 
| Ashton,
                MD Montgomery Co. United States | Harbour Town Dr. / Grand Cypress Ct. (39.13205, -77.00407) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Marriottsville,
                MD Howard Co. United States | Sand Hill Rd. / Sand Hill Manor Dr. / Mount View Rd. (39.31018, -76.93043) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 28.9560 | Other (At-Grade) Single-Lane | 1998 | Year Completed estimated (1993-2002). | 
| Boonsboro,
                MD Washington Co. United States | Monument Dr. / West Wing Way (39.50248, -77.65503) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Boonsboro,
                MD Washington Co. United States | Monument Dr. / Midlothian Way (39.50117, -77.65254) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Boonsboro,
                MD Washington Co. United States | Monument Dr. / East Wing Way (39.50047, -77.65002) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Waxahachie,
                TX Ellis Co. United States | Bessie Coleman Blvd. / Dean Box Dr. (32.42802, -96.82893) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.5280 | Other (At-Grade) Single-Lane | 2022 | |
| Red Oak,
                TX Ellis Co. United States | Harmony Way / Grand Meadow Blvd. (32.53842, -96.82920) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | 2022 | Add-lane right-turn bypass lanes on all legs. Two-lane pedestrian crossings across all entries and exits. | 
| Prosper,
                TX Denton Co. United States | Commons Way / Madison Square Way (33.24175, -96.85610) | Other Existing | All-Way Yield None | 3 Approaches 0 Driveways 32.0037 | Other (At-Grade) Single-Lane | 2017 | No splitter islands. | 
| Fort Worth,
                TX Tarrant Co. United States | Keller Haslet Rd. / (connector to Alliance Gateway Fwy. WB Frontage Road) / (parking) (32.97209, -97.28930) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2021 | |
| Weatherford,
                TX Parker Co. United States | College Park Dr. / Martin Dr. (32.73953, -97.78931) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2019 | |
| Tomball,
                TX Harris Co. United States | Willowcreek Ranch Rd. / Three Bears Trl. (30.05938, -95.65177) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2015 | |
| Colleyville,
                TX Tarrant Co. United States | John McCain Rd. / Westcoat Dr. (32.91156, -97.16404) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 25.9080 | Other (At-Grade) Single-Lane | 2020 | |
| Driftwood,
                TX Hays Co. United States | FM 150 (Rebel Rd.) / FM 3237 (30.04763, -97.98845) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2022 | https://haysfreepress.com/2022/07/27/hays-county-celebrates-the-latest-roundabout/ | 
| New Braunfels,
                TX Comal Co. United States | Main Plaza (Seguin Ave. / San Antonio St.) (29.70300, -98.12464) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | Pedestrian access to central island; parking along circulatory roadway. |