| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Rio | city | Florida | United States | 27.22 | -80.24 | 0 | |
| Rio | city | Georgia | United States | 33.28 | -84.38 | 830 | |
| Rio | city | Illinois | United States | 41.11 | -90.40 | 830 | |
| Rio | city | Kentucky | United States | 37.32 | -85.77 | 830 | |
| Rio | city | Louisiana | United States | 30.69 | -89.89 | 91 | |
| Rio | city | Mississippi | United States | 32.61 | -88.88 | 400 | |
| Rio | city | Utah | United States | 40.00 | -111.43 | 6066 | |
| Rio | city | West Virginia | United States | 39.14 | -78.67 | 1112 | |
| Rio | city | Wisconsin | United States | 43.45 | -89.24 | 951 | |
| Rio | city | Virginia | United States | 38.08 | -78.46 | 403 | |
| Rio Altos | city | Florida | United States | 28.03 | -82.43 | 22 | |
| Rio Blanco | city | Colorado | United States | 39.74 | -107.95 | 7598 | |
| Rio Bravo | city | California | United States | 35.40 | -119.29 | 318 | |
| Rio Bravo | city | Texas | United States | 27.36 | -99.48 | 830 | |
| Rio Bravo Annex Colonia | city | Texas | United States | 27.36 | -99.50 | 410 | |
| Rio Bravo Colonia | city | Texas | United States | 27.37 | -99.48 | 830 | |
| Rio Bravo Colonia | city | Texas | United States | 29.33 | -100.91 | 895 | |
| Rio Canas | city | Puerto Rico | United States | 18.00 | -66.64 | 32 | |
| Rio Chiquito | city | New Mexico | United States | 36.00 | -105.90 | 6751 | |
| Rio Communities | city | New Mexico | United States | 34.65 | -106.73 | 5029 | |
| Rio Creek | city | Wisconsin | United States | 44.59 | -87.54 | 830 | |
| Rio Cristal | city | Puerto Rico | United States | 18.35 | -66.00 | 209 | |
| Rio Del Mar | city | California | United States | 36.97 | -121.90 | 0 | |
| Rio Dell | city | California | United States | 40.50 | -124.11 | 196 | |
| Rio Dell | city | California | United States | 38.50 | -122.91 | 196 | |
| Rio En Medio | city | New Mexico | United States | 35.83 | -105.90 | 7549 | |
| Rio Frio | city | Texas | United States | 29.64 | -99.74 | 1699 | |
| Rio Grande | city | New Jersey | United States | 39.01 | -74.88 | 19 | |
| Rio Grande | city | Ohio | United States | 38.88 | -82.38 | 830 | |
| Rio Grande City | city | Texas | United States | 26.38 | -98.82 | 173 | |
| Rio Grande Estates | city | New Mexico | United States | 34.66 | -106.71 | 5029 | |
| Rio Grande Hills | city | Puerto Rico | United States | 18.38 | -65.85 | 45 | |
| Rio Grande Village | city | Texas | United States | 29.18 | -102.96 | 1771 | |
| Rio Heights | city | Virginia | United States | 38.05 | -78.46 | 400 | |
| Rio Hermoso | city | Florida | United States | 27.86 | -82.31 | 49 | |
| Rio Hondo | city | Texas | United States | 26.24 | -97.58 | 22 | |
| Rio Hondo | city | California | United States | 33.98 | -118.12 | 124 | |
| Rio Hondo IV | city | Puerto Rico | United States | 18.43 | -66.16 | 16 | |
| Rio Linda | city | California | United States | 38.69 | -121.45 | 39 | |
| Rio Lucio | city | New Mexico | United States | 36.20 | -105.73 | 7549 | |
| Rio Nido | city | California | United States | 38.52 | -122.98 | 173 | |
| Rio Oso | city | California | United States | 38.96 | -121.54 | 36 | |
| Rio Pasado Estates Colonia | city | Texas | United States | 31.59 | -106.25 | 3631 | |
| Rio Piedras | city | Puerto Rico | United States | 18.40 | -66.05 | 95 | |
| Rio Plaza Mobile Home Park | city | California | United States | 36.20 | -121.13 | 285 | |
| Rio Pueblo | city | New Mexico | United States | 36.19 | -105.64 | 7660 | |
| Rio Puerco | city | New Mexico | United States | 34.79 | -106.99 | 5029 | |
| Rio Puerco | city | New Mexico | United States | 36.21 | -106.58 | 6709 | |
| Rio Ranch | city | Georgia | United States | 33.52 | -84.04 | 830 | |
| Rio Rancho | city | New Mexico | United States | 35.23 | -106.66 | 5236 | |
| Rio Rancho Estates | city | New Mexico | United States | 35.24 | -106.67 | 5252 | |
| Rio Rancho Estates Colonia | city | Texas | United States | 31.66 | -106.27 | 3694 | |
| Rio Rico | city | Arizona | United States | 31.47 | -110.98 | 3448 | |
| Rio Rico | city | Texas | United States | 26.06 | -97.89 | 85 | |
| Rio Sol | city | Puerto Rico | United States | 18.06 | -66.72 | 259 | |
| Rio Verde | city | Arizona | United States | 33.72 | -111.68 | 1669 | |
| Rio Verde Estates | city | Arizona | United States | 33.72 | -111.68 | 1669 | |
| Rio Verde Mobile Estates | city | Washington | United States | 47.32 | -122.21 | 190 | |
| Rio Vista | city | Arkansas | United States | 35.29 | -91.47 | 196 | |
| Rio Vista | city | California | United States | 38.16 | -121.69 | 3 | |
| Rio Vista | city | Florida | United States | 27.85 | -82.64 | 6 | |
| Rio Vista | city | Georgia | United States | 31.93 | -81.09 | 3 | |
| Rio Vista | city | Kentucky | United States | 36.84 | -83.36 | 1669 | |
| Rio Vista | city | Maryland | United States | 38.78 | -76.21 | 3 | |
| Rio Vista | city | Massachusetts | United States | 42.54 | -71.31 | 154 | |
| Rio Vista | city | Tennessee | United States | 35.78 | -84.17 | 902 | |
| Rio Vista | city | Texas | United States | 32.23 | -97.37 | 830 | |
| Rio Vista | city | Utah | United States | 41.14 | -111.94 | 4547 | |
| Rio Vista | city | Georgia | United States | 31.56 | -84.14 | 154 | |
| Rio Vista | city | Virginia | United States | 37.57 | -77.52 | 157 | |
| Rio Vista Addition Colonia | city | Texas | United States | 31.66 | -106.29 | 3667 | |
| Rio Vista Isles | city | Florida | United States | 26.11 | -80.12 | 3 | |
| Rio Vista Junction | city | California | United States | 38.21 | -121.88 | 98 | |
| Rio Vista Mobile Home Estates | city | California | United States | 33.84 | -117.87 | 229 | |
| Rio Vista Plaza Mobile Home Park | city | Maryland | United States | 38.82 | -76.69 | 49 | |
| Rio Vista Trailer Park | city | Florida | United States | 29.99 | -81.67 | 9 | |
| Rio del Oro | city | New Mexico | United States | 34.73 | -106.69 | 5029 | |
| Riomar | city | Florida | United States | 27.65 | -80.36 | 3 | |
| Riomedina | city | Texas | United States | 29.44 | -98.88 | 846 | |
| Rion | city | South Carolina | United States | 34.31 | -81.13 | 830 | |
| Riordan | city | Arizona | United States | 35.19 | -111.74 | 7549 | |
| Rios | city | Texas | United States | 27.45 | -98.27 | 249 | |
| Rioville (historical) | city | Nevada | United States | 36.15 | -114.40 | 1079 | |
| Riovista | city | Wyoming | United States | 41.55 | -109.51 | 6709 | |
| Riovista | city | Tennessee | United States | 36.33 | -82.26 | 1669 |