Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Joliet Hollow | Valley | | Alexander | 37 14 14 N | 089 24 48 W |
| Joliet Jewish Congregation | Church | 198 | Will | 41 31 37 N | 088 06 52 W |
| Joliet Job Corps Center | Building | 195 | Will | 41 30 15 N | 088 03 17 W |
| Joliet Junior College | School | 165 | Will | 41 31 33 N | 088 04 28 W |
| Joliet Junior College Lake | Reservoir | 173 | Will | 41 31 06 N | 088 11 06 W |
| Joliet Junior College Lake Dam | Dam | 173 | Will | 41 31 06 N | 088 11 06 W |
| Joliet Junior College North Campus | School | 204 | Will | 41 39 32 N | 088 05 06 W |
| Joliet Mall Shopping Center | Locale | 184 | Will | 41 34 35 N | 088 09 55 W |
| Joliet Municipal Building | Building | 165 | Will | 41 31 28 N | 088 05 07 W |
| Joliet Municipal Stadium | Park | 189 | Will | 41 31 13 N | 088 09 09 W |
| Joliet Park District Airport | Airport | 177 | Will | 41 31 04 N | 088 10 30 W |
| Joliet Post Office | Post Office | 165 | Will | 41 31 37 N | 088 04 47 W |
| Joliet Public Library | Building | 165 | Will | 41 31 38 N | 088 04 57 W |
| Joliet State Correctional Center | Building | 168 | Will | 41 32 48 N | 088 04 27 W |
| Joliet West High School | School | 197 | Will | 41 31 42 N | 088 07 35 W |
| Joliff School (historical) | School | 144 | Clinton | 38 32 52 N | 089 09 25 W |
| Jolliff Cemetery | Cemetery | 146 | Clinton | 38 32 50 N | 089 08 49 W |
| Jollity School (historical) | School | 146 | Randolph | 38 03 34 N | 089 43 23 W |
| Jolly Cemetery | Cemetery | 189 | Logan | 40 13 01 N | 089 12 19 W |
| Jonas E Salk Elementary School | School | 224 | Will | 41 42 43 N | 088 02 50 W |
| Jonas Johnson Island | Island | 165 | Mercer | 41 12 52 N | 091 04 39 W |
| Jonathan Branch | Stream | | Moultrie | 39 40 55 N | 088 39 31 W |
| Jonathan Creek | Stream | | Edgar | 39 52 01 N | 087 30 00 W |
| Jonathan Creek | Stream | | Moultrie | 39 34 19 N | 088 33 11 W |
| Jonathan Creek Christian Church | Church | 195 | Moultrie | 39 36 40 N | 088 31 44 W |
| Jonathan Creek School | School | 205 | Moultrie | 39 39 06 N | 088 31 08 W |
| Jonathan Creek Townhall | Building | 204 | Moultrie | 39 39 02 N | 088 31 42 W |
| Jonathan Hall | Building | 192 | Cook | 41 53 57 N | 087 48 41 W |
| Jonathan Turner Junior High School | School | 181 | Morgan | 39 43 30 N | 090 14 49 W |
| Jonathon Creek Cemetery | Cemetery | 195 | Moultrie | 39 36 40 N | 088 31 43 W |
| Jones | Populated Place | 223 | Coles | 39 27 09 N | 088 20 09 W |
| Jones Allison Hall | Building | 191 | Macoupin | 39 17 10 N | 089 52 20 W |
| Jones Branch | Stream | | Jefferson | 38 10 33 N | 088 47 50 W |
| Jones Cemetery | Cemetery | 139 | Clinton | 38 33 24 N | 089 14 03 W |
| Jones Cemetery | Cemetery | 159 | Crawford | 38 53 21 N | 087 40 44 W |
| Jones Cemetery | Cemetery | 142 | Crawford | 38 54 29 N | 087 48 56 W |
| Jones Cemetery | Cemetery | 144 | Franklin | 37 57 18 N | 088 48 54 W |
| Jones Cemetery | Cemetery | 118 | Gallatin | 37 49 41 N | 088 14 01 W |
| Jones Cemetery | Cemetery | 165 | Greene | 39 26 46 N | 090 19 13 W |
| Jones Cemetery | Cemetery | 190 | Iroquois | 40 58 24 N | 087 47 01 W |
| Jones Cemetery | Cemetery | 214 | Jackson | 37 50 52 N | 089 34 52 W |
| Jones Cemetery | Cemetery | 169 | Jasper | 39 01 21 N | 088 13 53 W |
| Jones Cemetery | Cemetery | 173 | Marion | 38 47 30 N | 088 53 29 W |
| Jones Cemetery | Cemetery | 168 | Marion | 38 45 31 N | 088 58 39 W |
| Jones Cemetery | Cemetery | 159 | Mason | 40 11 21 N | 090 00 20 W |
| Jones Cemetery | Cemetery | 195 | Morgan | 39 34 06 N | 090 02 16 W |
| Jones Cemetery | Cemetery | 131 | Perry | 38 02 19 N | 089 12 53 W |
| Jones Cemetery | Cemetery | 135 | Saline | 37 39 58 N | 088 23 53 W |
| Jones Cemetery | Cemetery | 179 | Sangamon | 39 41 31 N | 089 39 29 W |
| Jones Cemetery | Cemetery | 185 | Schuyler | 40 10 21 N | 090 18 17 W |
| Jones Ditch | Canal | 131 | Richland | 38 37 26 N | 088 07 15 W |
| Jones Family Cemetery | Cemetery | 119 | White | 38 03 53 N | 088 06 35 W |
| Jones Grove Cemetery | Cemetery | 197 | Vermilion | 40 04 19 N | 087 42 01 W |
| Jones Hollow | Valley | | Alexander | 37 09 56 N | 089 24 15 W |
| Jones Laboratory | Building | 180 | Cook | 41 47 25 N | 087 36 03 W |
| Jones Lake | Lake | 164 | Rock Island | 41 20 51 N | 091 03 02 W |
| Jones Memorial Hall | Building | 202 | Morgan | 39 43 52 N | 090 14 48 W |
| Jones Metropolitan High School | School | 180 | Cook | 41 52 27 N | 087 37 42 W |
| Jones Park | Park | 224 | Cook | 41 28 36 N | 087 42 37 W |
| Jones Park | Park | 201 | Fulton | 40 33 23 N | 090 02 04 W |
| Jones Park | Park | 126 | St. Clair | 38 37 32 N | 090 07 06 W |
| Jones Pond | Reservoir | 179 | Jersey | 39 03 36 N | 090 13 18 W |
| Jones Pond (historical) | Lake | 110 | Jackson | 37 47 50 N | 089 38 01 W |
| Jones Pond Dam | Dam | 179 | Jersey | 39 03 36 N | 090 13 18 W |
| Jones Quarry Creek | Stream | | Jackson | 37 45 23 N | 089 21 39 W |
| Jones Ridge | Populated Place | 109 | Jackson | 37 48 01 N | 089 37 31 W |
| Jones School (historical) | School | 180 | Cook | 41 52 28 N | 087 37 50 W |
| Jones School (historical) | School | 186 | Cumberland | 39 19 36 N | 088 11 44 W |
| Jones School (historical) | School | 188 | Edgar | 39 42 57 N | 087 35 26 W |
| Jones School (historical) | School | 204 | Fulton | 40 33 12 N | 090 09 41 W |
| Jones School (historical) | School | 192 | Fulton | 40 26 23 N | 090 15 13 W |
| Jones School (historical) | School | 190 | Iroquois | 40 57 52 N | 087 47 39 W |
| Jones School (historical) | School | 187 | Jackson | 37 52 53 N | 089 34 08 W |
| Jones School (historical) | School | 165 | Jasper | 39 04 09 N | 088 07 17 W |
| Jones School (historical) | School | 192 | Kendall | 41 32 04 N | 088 16 28 W |
| Jones School (historical) | School | 213 | Livingston | 40 53 22 N | 088 29 29 W |
| Jones School (historical) | School | 168 | Marion | 38 46 07 N | 088 58 39 W |
| Jones School (historical) | School | 152 | Mason | 40 11 34 N | 090 00 26 W |
| Jones School (historical) | School | 196 | McDonough | 40 22 56 N | 090 34 51 W |
| Jones School (historical) | School | 132 | Saline | 37 39 58 N | 088 23 32 W |
| Jonesboro | Populated Place | 172 | Union | 37 27 06 N | 089 16 05 W |
| Jonesboro City Hall | Building | 171 | Union | 37 27 06 N | 089 16 08 W |
| Jonesboro District Number 1 Election Precinct | Civil | 131 | Union | 37 28 55 N | 089 19 17 W |
| Jonesboro District Number 2 Election Precinct | Civil | 143 | Union | 37 24 20 N | 089 17 35 W |
| Jonesboro Elementary School | School | 160 | Union | 37 27 01 N | 089 16 31 W |
| Jonesboro Post Office | Post Office | 170 | Union | 37 27 06 N | 089 16 09 W |
| Jonesboro Public Library | Building | 151 | Union | 37 26 51 N | 089 16 05 W |
| Jonesboro Quarry | Mine | 123 | Union | 37 22 14 N | 089 14 40 W |
| Jonesboro School (historical) | School | 193 | Macoupin | 39 02 17 N | 090 05 59 W |
| Jonesville | Populated Place | 158 | La Salle | 41 18 41 N | 089 04 17 W |
| Jonesville | Populated Place | 225 | Winnebago | 42 19 30 N | 089 04 39 W |
| Jonesville School (historical) | Locale | 275 | Lee | 41 41 45 N | 089 00 55 W |
| Jonquil Park | Park | 182 | Cook | 41 55 42 N | 087 39 17 W |
| Jonquil Terrace Park | Park | 198 | Cook | 42 01 22 N | 087 48 56 W |
| Jonte Cemetery | Cemetery | 167 | Schuyler | 40 02 04 N | 090 34 54 W |
| Joplin Cemetery | Cemetery | 136 | Franklin | 37 56 23 N | 088 53 14 W |
| Joplin School | School | 185 | Cook | 41 44 56 N | 087 40 09 W |
| Joppa | Populated Place | 108 | Massac | 37 12 23 N | 088 50 41 W |
| Joppa High School | School | 112 | Massac | 37 12 46 N | 088 50 43 W |
| Joppa Junction | Populated Place | 123 | Johnson | 37 19 47 N | 089 01 53 W |
| Jordan Baptist Church | Church | 189 | Cook | 41 44 05 N | 087 44 50 W |
| Jordan Catholic School | School | 207 | Rock Island | 41 28 51 N | 090 33 57 W |
| Jordan Cemetery | Cemetery | 202 | Douglas | 39 52 05 N | 088 05 40 W |
| Jordan Cemetery | Cemetery | 214 | Shelby | 39 24 07 N | 088 42 35 W |
| Jordan Cemetery | Cemetery | 139 | Wabash | 38 33 40 N | 087 41 42 W |
| Jordan Center | Locale | 225 | Whiteside | 41 53 15 N | 089 41 12 W |
| Jordan Chapel (historical) | Church | 208 | Shelby | 39 24 00 N | 088 42 34 W |
| Jordan Chapel Cemetery | Cemetery | 177 | Jefferson | 38 26 47 N | 088 55 03 W |
| Jordan Church | Church | 232 | Whiteside | 41 52 39 N | 089 43 30 W |
| Jordan Chute | Channel | 156 | Henderson | 40 49 42 N | 091 04 33 W |