| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| South Madison | city | Ohio | United States | 41.73 | -81.05 | 948 | |
| South Madison | city | West Virginia | United States | 38.05 | -81.81 | 846 | |
| South Madison | city | Wisconsin | United States | 43.06 | -89.39 | 849 | |
| South Main Plaza | city | Texas | United States | 29.61 | -95.48 | 65 | |
| South Main Street Addition | city | Utah | United States | 40.74 | -111.89 | 4281 | |
| South Main Townhouses | city | Utah | United States | 40.88 | -111.88 | 4494 | |
| South Malden | city | West Virginia | United States | 38.29 | -81.57 | 830 | |
| South Manor | city | New York | United States | 40.86 | -72.82 | 49 | |
| South Mansfield | city | Louisiana | United States | 32.02 | -93.71 | 347 | |
| South Mantoloking Beach | city | New Jersey | United States | 40.02 | -74.05 | 19 | |
| South Mapleton Hills | city | Tennessee | United States | 35.23 | -84.85 | 830 | |
| South Marion | city | Indiana | United States | 40.91 | -87.13 | 830 | |
| South Marshall | city | Kentucky | United States | 36.80 | -88.33 | 830 | |
| South Martin | city | Indiana | United States | 38.54 | -86.87 | 830 | |
| South Masaryktown | city | Florida | United States | 28.43 | -82.46 | 68 | |
| South Mashpee | city | Massachusetts | United States | 41.58 | -70.48 | 49 | |
| South Meadow Village | city | Massachusetts | United States | 41.89 | -70.75 | 98 | |
| South Meadows Farms | city | South Carolina | United States | 34.92 | -81.95 | 830 | |
| South Media | city | Pennsylvania | United States | 39.91 | -75.38 | 200 | |
| South Meriden | city | Connecticut | United States | 41.52 | -72.83 | 104 | |
| South Merrimack | city | New Hampshire | United States | 42.80 | -71.56 | 196 | |
| South Merrydale | city | Louisiana | United States | 30.50 | -91.12 | 59 | |
| South Merrywoods | city | Louisiana | United States | 32.55 | -93.56 | 236 | |
| South Metro | city | Florida | United States | 30.29 | -81.63 | 22 | |
| South Miami | city | Florida | United States | 25.71 | -80.29 | 6 | |
| South Miami Heights | city | Florida | United States | 25.60 | -80.38 | 6 | |
| South Middleboro | city | Massachusetts | United States | 41.82 | -70.83 | 111 | |
| South Middleton | city | Massachusetts | United States | 42.57 | -71.03 | 59 | |
| South Middletown | city | Ohio | United States | 39.48 | -84.40 | 830 | |
| South Milford | city | Indiana | United States | 41.53 | -85.27 | 984 | |
| South Milford | city | Massachusetts | United States | 42.10 | -71.50 | 288 | |
| South Milford | city | New Hampshire | United States | 42.82 | -71.66 | 301 | |
| South Milford | city | Ohio | United States | 39.15 | -84.29 | 830 | |
| South Milford (historical) | city | Delaware | United States | 38.91 | -75.43 | 26 | |
| South Mill | city | New Mexico | United States | 33.17 | -104.14 | 3556 | |
| South Millbrook | city | New York | United States | 41.77 | -73.70 | 830 | |
| South Millen (historical) | city | Georgia | United States | 32.79 | -81.95 | 141 | |
| South Mills | city | North Carolina | United States | 36.45 | -76.33 | 6 | |
| South Milwaukee | city | Wisconsin | United States | 42.91 | -87.86 | 830 | |
| South Minnesota Road Colonia | city | Texas | United States | 26.23 | -98.38 | 137 | |
| South Minnesota Road Colonia Number 2 | city | Texas | United States | 26.23 | -98.38 | 137 | |
| South Minnesota Road Colonia Number 3 | city | Texas | United States | 26.23 | -98.38 | 137 | |
| South Mitchell | city | Nebraska | United States | 41.91 | -103.81 | 4189 | |
| South Mobile Village | city | Florida | United States | 28.87 | -80.86 | 6 | |
| South Monmouth | city | Maine | United States | 44.18 | -69.99 | 367 | |
| South Monroe | city | Michigan | United States | 41.90 | -83.42 | 830 | |
| South Monson | city | Massachusetts | United States | 42.09 | -72.31 | 830 | |
| South Monterey | city | Michigan | United States | 42.60 | -85.84 | 830 | |
| South Montesano | city | Washington | United States | 46.96 | -123.61 | 200 | |
| South Montrose | city | Pennsylvania | United States | 41.80 | -75.89 | 1679 | |
| South Montville | city | Maine | United States | 44.37 | -69.27 | 298 | |
| South Morningside Heights | city | Utah | United States | 40.68 | -111.81 | 5029 | |
| South Morrill | city | Nebraska | United States | 41.93 | -103.93 | 4189 | |
| South Moultrie | city | Georgia | United States | 31.16 | -83.77 | 298 | |
| South Mound | city | Kansas | United States | 37.44 | -95.23 | 948 | |
| South Mount Tabor (historical) | city | Kentucky | United States | 38.65 | -85.30 | 830 | |
| South Mount Vernon | city | Ohio | United States | 40.38 | -82.49 | 997 | |
| South Mountain | city | Idaho | United States | 42.75 | -116.92 | 6876 | |
| South Mountain | city | Pennsylvania | United States | 39.85 | -77.49 | 1669 | |
| South Mountain | city | Texas | United States | 31.43 | -97.68 | 954 | |
| South Mountain Trailer Park | city | Arizona | United States | 33.37 | -112.07 | 1669 | |
| South Mulberry | city | Florida | United States | 27.89 | -81.97 | 127 | |
| South Murray | city | Kentucky | United States | 36.58 | -88.32 | 830 |