Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| South Shopping Center | Locale | 214 | Cook | 41 35 13 N | 087 47 01 W |
| South Shore (subdivision) | Populated Place | 180 | Cook | 41 45 43 N | 087 34 40 W |
| South Shore Bible Baptist Church | Church | 180 | Cook | 41 45 52 N | 087 35 04 W |
| South Shore Community Academy | School | 181 | Cook | 41 45 22 N | 087 34 45 W |
| South Shore Community Church | Church | 179 | Cook | 41 45 38 N | 087 33 58 W |
| South Shore Congregation of Jehovahs Witnesses | Church | 179 | Cook | 41 45 05 N | 087 33 17 W |
| South Shore Country Club | Locale | 179 | Cook | 41 46 06 N | 087 33 48 W |
| South Shore Country Club (historical) | Locale | 179 | Cook | 41 46 06 N | 087 33 47 W |
| South Shore Cultural Center | Building | 178 | Cook | 41 46 00 N | 087 33 58 W |
| South Shore Golf Course | Locale | 189 | Kankakee | 41 08 44 N | 087 42 14 W |
| South Shore High School | School | 181 | Cook | 41 45 22 N | 087 34 45 W |
| South Shore Hospital | Hospital | 179 | Cook | 41 44 58 N | 087 34 09 W |
| South Shore Park | Park | 180 | Cook | 41 45 29 N | 087 34 40 W |
| South Shore Pre-School | School | 179 | Cook | 41 45 47 N | 087 33 47 W |
| South Shore Presbyterian Church | Church | 179 | Cook | 41 45 32 N | 087 33 21 W |
| South Shore State Park | Park | 135 | Clinton | 38 37 13 N | 089 18 13 W |
| South Shore United Methodist Church | Church | 180 | Cook | 41 45 39 N | 087 34 35 W |
| South Shore Yacht Club | Locale | 179 | Cook | 41 46 45 N | 087 34 45 W |
| South Shores Elementary School | School | 212 | Macon | 39 48 39 N | 088 57 05 W |
| South Shores Park | Park | 209 | Macon | 39 48 33 N | 088 56 58 W |
| South Shores Shopping Center | Locale | 193 | Macon | 39 49 20 N | 088 57 28 W |
| South Side Baptist Church | Church | 143 | Jefferson | 38 17 58 N | 088 54 34 W |
| South Side Baptist Church | Church | 208 | Montgomery | 39 10 18 N | 089 38 38 W |
| South Side Catholic Community School | School | 153 | Peoria | 40 40 38 N | 089 36 55 W |
| South Side Cemetery | Cemetery | 220 | Adams | 40 01 22 N | 090 57 33 W |
| South Side Cemetery | Cemetery | 190 | Brown | 39 52 54 N | 090 39 17 W |
| South Side Christian Church | Church | 182 | La Salle | 41 19 38 N | 088 50 17 W |
| South Side Church of Christ | Church | 191 | Vermilion | 40 06 44 N | 087 38 16 W |
| South Side Church of the Nazarene | Church | 183 | La Salle | 41 19 37 N | 088 50 11 W |
| South Side Church of the Nazarene | Church | 158 | Peoria | 40 40 13 N | 089 38 31 W |
| South Side City Park | Park | 145 | St. Clair | 38 30 23 N | 089 59 27 W |
| South Side Country Club | Locale | 197 | Macon | 39 48 11 N | 088 59 29 W |
| South Side Elementary School | School | 232 | Champaign | 40 06 29 N | 088 15 19 W |
| South Side Elementary School | School | 134 | Williamson | 37 47 47 N | 089 01 33 W |
| South Side Gospel Church | Church | 180 | Cook | 41 46 42 N | 087 36 12 W |
| South Side Grade School | School | 180 | Effingham | 39 06 42 N | 088 32 38 W |
| South Side Mission | Church | 157 | Peoria | 40 40 29 N | 089 38 34 W |
| South Side Park | Park | 238 | DuPage | 41 51 48 N | 088 03 25 W |
| South Side School | School | 193 | Iroquois | 40 46 20 N | 087 44 08 W |
| South Slip | Locale | 175 | Cook | 41 43 54 N | 087 32 17 W |
| South Spanish Congregation of Jehovahs Witnesses | Church | 179 | Cook | 41 42 22 N | 087 33 38 W |
| South Strasburg | Populated Place | 196 | Shelby | 39 20 45 N | 088 37 12 W |
| South Streator (subdivision) | Populated Place | 189 | Livingston | 41 07 28 N | 088 49 30 W |
| South Suburban College | School | 182 | Cook | 41 36 24 N | 087 37 07 W |
| South Suburban Elementary School | School | 225 | Cook | 41 28 36 N | 087 42 33 W |
| South Suburban Hospital | Hospital | 202 | Cook | 41 33 59 N | 087 41 47 W |
| South Suburban Hospital Heliport | Airport | 201 | Cook | 41 34 01 N | 087 41 45 W |
| South Suburban Missionary Baptist Church | Church | 184 | Cook | 41 36 48 N | 087 38 56 W |
| South Suburban Seventh Day Adventist Church | Church | 225 | Cook | 41 28 35 N | 087 42 33 W |
| South Taylor School (historical) | School | 140 | Wayne | 38 29 20 N | 088 36 16 W |
| South Thomas Church (historical) | Church | 135 | Wayne | 38 25 05 N | 088 17 13 W |
| South Toms Prairie Cemetery | Cemetery | 137 | Wayne | 38 25 06 N | 088 17 15 W |
| South Towne Mall Shopping Center | Locale | 186 | La Salle | 41 19 18 N | 088 50 07 W |
| South Towne Shopping Center | Locale | 193 | Macon | 39 49 17 N | 088 57 32 W |
| South Union School (historical) | School | 186 | Edgar | 39 31 51 N | 087 44 54 W |
| South View Middle School | School | 192 | Vermilion | 40 06 31 N | 087 38 00 W |
| South Walnut School (historical) | School | 153 | Saline | 37 39 31 N | 088 33 50 W |
| South Warner Pond | Reservoir | 207 | Peoria | 40 43 24 N | 089 58 30 W |
| South Warner Pond Dam | Dam | 207 | Peoria | 40 43 24 N | 089 58 30 W |
| South Water Market | Locale | 181 | Cook | 41 51 43 N | 087 39 14 W |
| South Wilmington | Populated Place | 179 | Grundy | 41 10 22 N | 088 16 36 W |
| South Wilmington Consoldiated Elementary School | School | 179 | Grundy | 41 10 29 N | 088 16 39 W |
| Southampton School (historical) | School | 231 | Peoria | 40 54 03 N | 089 37 08 W |
| Southeast Elementary School | School | 261 | DeKalb | 41 58 52 N | 088 40 59 W |
| Southeast Elementary School | School | 201 | Macon | 39 49 51 N | 088 55 55 W |
| Southeast Guide Wall Light | Locale | 177 | Cook | 41 53 17 N | 087 38 10 W |
| Southeast Park | Park | 190 | Cook | 41 42 44 N | 087 41 41 W |
| Southeast Park | Park | 224 | Winnebago | 42 14 59 N | 089 04 13 W |
| Southeast School | School | 190 | Cook | 41 42 53 N | 087 41 38 W |
| Southeastern Elementary School | School | 195 | Hancock | 40 17 28 N | 090 54 37 W |
| Southeastern High School | School | 202 | Hancock | 40 13 39 N | 090 57 05 W |
| Southeastern Illinois College | School | 111 | Saline | 37 44 40 N | 088 26 13 W |
| Southeastern Illinois College | School | 117 | White | 38 05 28 N | 088 09 37 W |
| Southeastern Junior High School | School | 208 | Hancock | 40 14 13 N | 091 03 54 W |
| Souther Cemetery | Cemetery | 202 | Moultrie | 39 38 20 N | 088 40 38 W |
| Southerly Breakwater | Dam | 175 | Cook | 41 52 17 N | 087 36 44 W |
| Southern Elementary School | School | 208 | Henderson | 40 44 29 N | 090 54 34 W |
| Southern High School | School | 207 | Henderson | 40 44 28 N | 090 54 37 W |
| Southern Hills | Populated Place | 134 | Jackson | 37 42 14 N | 089 12 38 W |
| Southern Illinois Airport | Airport | 124 | Jackson | 37 46 42 N | 089 15 07 W |
| Southern Illinois Country Club | Locale | 135 | Williamson | 37 42 47 N | 088 54 21 W |
| Southern Illinois University | School | 139 | Jackson | 37 42 47 N | 089 13 07 W |
| Southern Illinois University | School | 171 | Madison | 38 47 35 N | 089 59 39 W |
| Southern Illinois University Belleville Research Center | School | 131 | St. Clair | 38 31 07 N | 089 50 28 W |
| Southern Illinois University-Alton Campus | School | 162 | Madison | 38 54 10 N | 090 08 37 W |
| Southern Illnois University | School | 136 | Williamson | 37 44 07 N | 089 03 17 W |
| Southern Junior High School | School | 217 | Henderson | 40 46 25 N | 090 50 07 W |
| Southern Mission Baptist Church | Church | 128 | St. Clair | 38 38 20 N | 090 08 43 W |
| Southern Missionary Baptist Church | Church | 183 | Cook | 41 46 23 N | 087 39 51 W |
| Southern Outlet | Canal | 113 | Hamilton | 38 11 40 N | 088 25 53 W |
| Southern Tabernacle Baptist Church | Church | 127 | St. Clair | 38 39 32 N | 090 10 03 W |
| Southern Valley Baptist Church | Church | 157 | Peoria | 40 40 39 N | 089 37 11 W |
| Southern View | Populated Place | 186 | Sangamon | 39 45 26 N | 089 39 13 W |
| Southern View (subdivision) | Populated Place | 184 | Adams | 39 54 16 N | 091 23 54 W |
| Southern View Elementary School | School | 185 | Sangamon | 39 45 18 N | 089 38 56 W |
| Southfield Plaza Shopping Center | Locale | 188 | Cook | 41 43 53 N | 087 47 50 W |
| Southgate | Populated Place | 241 | Ogle | 41 53 30 N | 089 03 51 W |
| Southgate Estates Trailer Park (subdivision) | Populated Place | 267 | McLean | 40 26 51 N | 088 59 09 W |
| Southgate Shopping Center | Locale | 222 | Winnebago | 42 13 17 N | 089 04 32 W |
| Southland Acres (subdivision) | Populated Place | 198 | Douglas | 39 47 22 N | 088 17 05 W |
| Southland Shopping Center | Locale | 212 | Cook | 42 03 32 N | 088 00 28 W |
| Southlawn | Populated Place | 180 | Sangamon | 39 45 13 N | 089 37 17 W |
| Southlawn United Methodist Church | Church | 179 | Cook | 41 44 19 N | 087 34 48 W |
| Southminster Presbyterian Church | Church | 210 | Cook | 42 04 02 N | 087 58 17 W |
| Southminster Presbyterian Church | Church | 233 | DuPage | 41 50 08 N | 088 03 59 W |
| Southmoor | Populated Place | 210 | Cook | 41 39 09 N | 087 49 47 W |
| Southmoor | Populated Place | 177 | Madison | 38 56 05 N | 090 12 12 W |
| Southmore Heights (subdivision) | Populated Place | 188 | Effingham | 39 02 50 N | 088 44 59 W |
| Southpark Shopping Center | Locale | 172 | Rock Island | 41 28 02 N | 090 30 11 W |
| Southpoint Shopping Center | Locale | 208 | Cook | 42 06 32 N | 087 58 17 W |