Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Saint Ailbe School | School | 178 | Cook | 41 43 48 N | 087 35 10 W |
| Saint Ailbes Hall | Building | 178 | Cook | 41 43 48 N | 087 35 10 W |
| Saint Ailbes Roman Catholic Church | Church | 178 | Cook | 41 43 51 N | 087 35 10 W |
| Saint Albans Episcopal Church | Church | 197 | Cook | 41 59 39 N | 087 48 16 W |
| Saint Albans Episcopal Church | Church | 150 | Richland | 38 43 44 N | 088 04 48 W |
| Saint Albert Hall | Building | 197 | Will | 41 32 00 N | 088 05 51 W |
| Saint Albert School | School | 189 | Cook | 41 44 50 N | 087 45 32 W |
| Saint Albert the Great Catholic Church | Church | 189 | Cook | 41 44 47 N | 087 45 36 W |
| Saint Albert the Great Church | Church | 175 | St. Clair | 38 35 36 N | 089 59 05 W |
| Saint Albert the Great School | School | 175 | St. Clair | 38 35 37 N | 089 59 03 W |
| Saint Alexander School | School | 189 | Cook | 41 39 47 N | 087 47 39 W |
| Saint Alexander School | School | 212 | DuPage | 41 53 08 N | 087 58 40 W |
| Saint Alexanders Church | Church | 213 | DuPage | 41 53 04 N | 087 58 40 W |
| Saint Alexis Roman Catholic Church | Church | 207 | DuPage | 41 57 09 N | 087 56 46 W |
| Saint Alexis School | School | 207 | DuPage | 41 57 09 N | 087 56 45 W |
| Saint Alexius Catholic Church | Church | 137 | Cass | 40 00 50 N | 090 26 01 W |
| Saint Alfreds Chapel | Church | 227 | Ford | 40 26 51 N | 088 09 22 W |
| Saint Aloysius Catholic Church | Church | 121 | Franklin | 37 52 42 N | 089 07 10 W |
| Saint Aloysius Cemetery | Cemetery | 208 | Edgar | 39 40 21 N | 087 36 50 W |
| Saint Aloysius Cemetery | Cemetery | 174 | Effingham | 39 03 44 N | 088 26 24 W |
| Saint Aloysius Cemetery | Cemetery | 138 | Franklin | 37 53 28 N | 089 06 25 W |
| Saint Aloysius Church | Church | 208 | Edgar | 39 40 21 N | 087 36 49 W |
| Saint Aloysius Roman Catholic Church | Church | 182 | Cook | 41 54 31 N | 087 41 07 W |
| Saint Aloysius Roman Catholic Church | Church | 209 | Montgomery | 39 10 46 N | 089 38 56 W |
| Saint Aloysius School | School | 182 | Cook | 41 54 32 N | 087 41 10 W |
| Saint Aloysius School | School | 180 | Sangamon | 39 49 51 N | 089 37 39 W |
| Saint Alphonsus Catholic Church | Church | 181 | Cook | 41 55 55 N | 087 39 52 W |
| Saint Alphonsus Catholic Church | Church | 216 | Cook | 41 40 11 N | 087 59 59 W |
| Saint Alphonsus Cemetery | Cemetery | 187 | Jersey | 39 03 02 N | 090 09 37 W |
| Saint Alphonsus High School | School | 182 | Cook | 41 55 55 N | 087 40 13 W |
| Saint Alphonsus Roman Catholic Church | Church | 182 | Cook | 41 56 08 N | 087 39 52 W |
| Saint Alphonsus School | School | 199 | Cook | 42 06 14 N | 087 55 35 W |
| Saint Alphonsus School | School | 216 | Cook | 41 40 10 N | 087 59 57 W |
| Saint Ambrose Catholic Church | Church | 180 | Whiteside | 41 39 11 N | 090 04 55 W |
| Saint Ambrose Roman Catholic Church | Church | 181 | Cook | 41 48 36 N | 087 36 05 W |
| Saint Ambrose Roman Catholic Church | Church | 196 | Will | 41 33 18 N | 088 06 38 W |
| Saint Ambrose School (historical) | School | 181 | Cook | 41 48 37 N | 087 36 02 W |
| Saint Anastasia Roman Catholic Church | Church | 198 | Lake | 42 22 36 N | 087 50 21 W |
| Saint Anastasia School | School | 198 | Lake | 42 22 38 N | 087 50 19 W |
| Saint Andrew Catholic Church | Church | 196 | Whiteside | 41 46 25 N | 089 42 10 W |
| Saint Andrew Church | Church | 233 | Winnebago | 42 27 25 N | 089 02 59 W |
| Saint Andrew Lutheran Church | Church | 181 | Cook | 41 49 37 N | 087 40 18 W |
| Saint Andrew Lutheran Church | Church | 191 | Cook | 41 33 12 N | 087 37 57 W |
| Saint Andrew Lutheran Church | Church | 230 | DuPage | 41 53 11 N | 088 11 02 W |
| Saint Andrew Presbyterian Church | Church | 199 | Cook | 41 58 35 N | 087 48 58 W |
| Saint Andrew Ridge | Ridge | 229 | Jersey | 39 01 00 N | 090 31 54 W |
| Saint Andrew Roman Catholic Church | Church | 183 | Cook | 41 56 47 N | 087 40 19 W |
| Saint Andrew School | School | 183 | Cook | 41 56 50 N | 087 40 19 W |
| Saint Andrew School (historical) | School | 221 | Jersey | 39 01 22 N | 090 32 06 W |
| Saint Andrew Temple Church of God | Church | 184 | Cook | 41 36 56 N | 087 39 44 W |
| Saint Andrew the Apostle Church | Church | 179 | Cook | 41 36 46 N | 087 31 58 W |
| Saint Andrew the Apostle School (historical) | School | 179 | Cook | 41 36 45 N | 087 32 00 W |
| Saint Andrew Ukrain Orthodx Cemetery | Cemetery | 223 | DuPage | 41 56 00 N | 088 03 37 W |
| Saint Andrew United Methodist Church | Church | 232 | DuPage | 41 54 32 N | 088 07 18 W |
| Saint Andrew-Crawford United Church of Christ | Church | 181 | Cook | 41 50 25 N | 087 43 35 W |
| Saint Andrew's Lutheran Church | Church | 197 | Cook | 42 00 52 N | 087 50 06 W |
| Saint Andrews Catholic Church | Church | 126 | Jackson | 37 45 47 N | 089 19 57 W |
| Saint Andrews Cemetery | Cemetery | 123 | Franklin | 37 56 57 N | 089 03 16 W |
| Saint Andrews Cemetery | Cemetery | 128 | Jackson | 37 46 23 N | 089 21 19 W |
| Saint Andrews Church | Church | 198 | Cook | 41 32 48 N | 087 39 08 W |
| Saint Andrews Church | Church | 194 | La Salle | 41 13 37 N | 088 54 56 W |
| Saint Andrews Church | Church | 152 | Peoria | 40 42 20 N | 089 34 25 W |
| Saint Andrews Day Care Center | School | 152 | Peoria | 40 42 20 N | 089 34 25 W |
| Saint Andrews Elementary School | School | 196 | Whiteside | 41 46 27 N | 089 42 10 W |
| Saint Andrews Episcopal Church | Church | 220 | DuPage | 41 47 53 N | 088 00 49 W |
| Saint Andrews Episcopal Church | Church | 241 | Lake | 42 20 32 N | 088 02 36 W |
| Saint Andrews Episcopal Church | Church | 229 | Woodford | 40 44 21 N | 089 00 52 W |
| Saint Andrews Golf Course | Locale | 240 | DuPage | 41 55 34 N | 088 12 03 W |
| Saint Andrews Greek Orthodox Church | Church | 180 | Cook | 41 59 07 N | 087 39 17 W |
| Saint Andrews Lutheran Church | Church | 188 | Cook | 41 56 44 N | 087 45 50 W |
| Saint Andrews Lutheran Church | Church | 226 | Lake | 42 15 47 N | 088 00 16 W |
| Saint Andrews Lutheran School | School | 197 | Cook | 42 00 52 N | 087 50 07 W |
| Saint Andrews Missionary Baptist Church | Church | 185 | Cook | 41 53 27 N | 087 44 45 W |
| Saint Andrews School | School | 181 | Cook | 41 49 37 N | 087 40 16 W |
| Saint Andrews School | School | 132 | Franklin | 37 58 18 N | 089 02 53 W |
| Saint Andrews School | School | 125 | Jackson | 37 45 46 N | 089 19 57 W |
| Saint Andrews School | School | 189 | Will | 41 38 57 N | 088 05 22 W |
| Saint Andrews Temple Byzantine Catholic Church | Church | 183 | Cook | 41 46 15 N | 087 40 04 W |
| Saint Andrews-Cheney Memorial Reformed Episcopal Church | Church | 192 | Cook | 41 42 49 N | 087 39 49 W |
| Saint Angela School | School | 188 | Cook | 41 54 16 N | 087 46 12 W |
| Saint Angela School | School | 160 | Grundy | 41 21 42 N | 088 24 48 W |
| Saint Angelas Roman Catholic Church | Church | 188 | Cook | 41 54 15 N | 087 46 13 W |
| Saint Ann High School | School | 185 | Cook | 41 51 25 N | 087 40 51 W |
| Saint Ann School | School | 251 | Lake | 42 09 21 N | 088 07 58 W |
| Saint Ann's Church | Church | 191 | Cook | 41 33 56 N | 087 32 37 W |
| Saint Anne | Populated Place | 203 | Kankakee | 41 01 30 N | 087 42 50 W |
| Saint Anne Catholic Cemetery | Cemetery | 203 | Kankakee | 41 01 35 N | 087 43 52 W |
| Saint Anne Cemetery | Cemetery | 217 | Cook | 41 28 56 N | 087 41 39 W |
| Saint Anne Cemetery | Cemetery | 198 | Kankakee | 41 01 20 N | 087 43 54 W |
| Saint Anne Community High School | School | 204 | Kankakee | 41 01 13 N | 087 43 20 W |
| Saint Anne Elementary School | School | 207 | Kankakee | 41 01 21 N | 087 43 17 W |
| Saint Anne Roman Catholic Church | Church | 196 | Will | 41 33 23 N | 088 05 35 W |
| Saint Anne School | School | 210 | Cook | 41 29 47 N | 087 38 24 W |
| Saint Anne School | School | 187 | Cook | 41 35 04 N | 087 39 54 W |
| Saint Anne School | School | 181 | Cook | 41 47 37 N | 087 37 47 W |
| Saint Anne School | School | 237 | Lee | 41 51 37 N | 089 29 08 W |
| Saint Anne School | School | 196 | Will | 41 33 17 N | 088 06 38 W |
| Saint Anne Woods | Populated Place | 202 | Kankakee | 41 02 15 N | 087 37 30 W |
| Saint Annes Catholic Cemetery | Cemetery | 186 | Bureau | 41 20 11 N | 089 11 48 W |
| Saint Annes Catholic Cemetery | Cemetery | 307 | Jo Daviess | 42 29 17 N | 089 58 52 W |
| Saint Annes Catholic Church | Church | 181 | Cook | 41 47 37 N | 087 37 49 W |
| Saint Annes Catholic Church | Church | 253 | Lake | 42 09 19 N | 088 07 58 W |
| Saint Annes Church | Church | 200 | Kendall | 41 41 39 N | 088 20 05 W |
| Saint Annes Episcopal Church | Church | 205 | Union | 37 27 27 N | 089 15 12 W |
| Saint Annes Hospital | Hospital | 186 | Cook | 41 54 05 N | 087 44 57 W |
| Saint Annes School | School | 153 | Washington | 38 20 20 N | 089 22 53 W |
| Saint Anns Catholic Cemetery | Cemetery | 171 | Effingham | 38 57 04 N | 088 41 01 W |
| Saint Anns Catholic Cemetery | Cemetery | 153 | Washington | 38 20 33 N | 089 21 54 W |
| Saint Anns Cemetery | Cemetery | 207 | Marshall | 40 59 52 N | 089 08 36 W |
| Saint Anns Church | Church | 212 | Marshall | 41 00 08 N | 089 08 13 W |