Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| University School | School | 131 | Jackson | 37 43 05 N | 089 13 13 W |
| University Square Shopping Center | Locale | 207 | Peoria | 40 44 51 N | 089 36 47 W |
| University Union | Building | 209 | McDonough | 40 28 00 N | 090 41 07 W |
| University United Methodist Church | Church | 195 | Peoria | 40 43 20 N | 089 36 45 W |
| University Village | Populated Place | 213 | McDonough | 40 27 53 N | 090 40 45 W |
| Updike Landing Strip | Airport | 195 | Kendall | 41 37 32 N | 088 34 29 W |
| Upper Alton | Populated Place | 166 | Madison | 38 54 41 N | 090 09 02 W |
| Upper Alton Baptist Church | Church | 162 | Madison | 38 54 14 N | 090 08 44 W |
| Upper Arm School (historical) | School | 153 | Perry | 38 06 44 N | 089 16 45 W |
| Upper Berry Cemetery | Cemetery | 179 | Cumberland | 39 17 50 N | 088 15 59 W |
| Upper Bluff Historic District | Park | 185 | Will | 41 31 48 N | 088 05 45 W |
| Upper Bluff Lake | Lake | 101 | Union | 37 23 30 N | 089 21 03 W |
| Upper Cass School (historical) | School | 219 | DuPage | 41 43 54 N | 087 58 36 W |
| Upper Center School (historical) | School | 202 | Schuyler | 40 16 04 N | 090 42 06 W |
| Upper Cutoff Slough | Gut | 136 | Pike | 39 27 43 N | 090 57 42 W |
| Upper Elco School | School | 115 | Alexander | 37 19 42 N | 089 15 16 W |
| Upper Eliza Lake (historical) | Lake | 161 | Mercer | 41 15 42 N | 091 02 01 W |
| Upper Embarras Woods Nature Preserve | Park | 196 | Douglas | 39 41 40 N | 088 02 25 W |
| Upper Flat Lake | Lake | 126 | Jersey | 39 00 35 N | 090 34 04 W |
| Upper Flat Pond | Lake | 132 | Calhoun | 39 02 04 N | 090 40 43 W |
| Upper Kent School (historical) | School | 270 | Stephenson | 42 18 45 N | 089 54 07 W |
| Upper Lester Cemetery | Cemetery | 205 | Douglas | 39 48 52 N | 088 21 26 W |
| Upper Mississippi River Wild Life and Fish Refuge | Park | 180 | Jo Daviess | 42 20 25 N | 090 24 57 W |
| Upper Muddy Cemetery | Cemetery | 222 | Coles | 39 24 25 N | 088 19 19 W |
| Upper Peoria Lake | Lake | 134 | Peoria | 40 48 24 N | 089 33 04 W |
| Upper Ridge Cemetery | Cemetery | 213 | Macon | 40 02 11 N | 089 01 19 W |
| Upper Ridge School (historical) | Locale | 224 | Macon | 40 02 11 N | 089 00 14 W |
| Upper Room Church of the Great Provider | Church | 181 | Cook | 41 55 35 N | 087 40 04 W |
| Upper Room Missionary Baptist Church | Church | 180 | Cook | 41 54 18 N | 087 38 31 W |
| Upper Room Spiritual Church | Church | 182 | Cook | 41 51 59 N | 087 42 44 W |
| Upper Salem Church | Church | 127 | Massac | 37 13 13 N | 088 43 48 W |
| Upper Salt Fork Drainage Ditch | Canal | 206 | Champaign | 40 14 32 N | 088 05 35 W |
| Upper Sand Ridge School (historical) | School | 128 | Greene | 39 29 30 N | 090 34 24 W |
| Upper Sandy Slough | Stream | | White | 38 03 57 N | 088 01 05 W |
| Upper School (historical) | School | 128 | Monroe | 38 17 52 N | 089 56 16 W |
| Upper Springdale School (historical) | School | 187 | Macoupin | 39 02 44 N | 089 50 02 W |
| Upper Stump Lake | Lake | 126 | Jersey | 38 59 52 N | 090 33 30 W |
| Upper Swan Lake | Lake | 135 | Pike | 39 26 57 N | 090 59 24 W |
| Upper Union School (historical) | School | 165 | Massac | 37 13 22 N | 088 37 16 W |
| Upper Wilkinson Landing (historical) | Locale | 110 | Jackson | 37 44 53 N | 089 38 01 W |
| Upponblock School (historical) | School | 133 | White | 38 03 15 N | 088 19 11 W |
| Upton | Locale | 207 | Lake | 42 17 19 N | 087 52 13 W |
| Upton Family Cemetery | Cemetery | 162 | Macoupin | 39 19 11 N | 090 04 36 W |
| Upton Park | Park | 193 | Lake | 42 22 15 N | 087 49 51 W |
| Upton School (historical) | School | 202 | Whiteside | 41 46 20 N | 089 57 00 W |
| Uptown (subdivision) | Populated Place | 182 | Cook | 41 58 54 N | 087 39 35 W |
| Uptown Baptist Church | Church | 180 | Cook | 41 57 55 N | 087 39 19 W |
| Uptown Broadway Building | Building | 182 | Cook | 41 58 05 N | 087 39 32 W |
| Uptown Congregation of Jehovahs Witnesses | Church | 181 | Cook | 41 55 59 N | 087 40 00 W |
| Uptown Field Center | School | 181 | Cook | 41 58 52 N | 087 43 00 W |
| Uptown Station Chicago Post Office | Post Office | 181 | Cook | 41 58 14 N | 087 39 36 W |
| Uptown Theatre | Building | 181 | Cook | 41 58 10 N | 087 39 35 W |
| Upwood (historical) | Building | 198 | Cook | 41 43 36 N | 087 40 11 W |
| Upwood Station | Locale | 189 | Cook | 41 43 42 N | 087 40 03 W |
| Urantia Foundation | Building | 181 | Cook | 41 55 56 N | 087 38 34 W |
| Urbain | Populated Place | 128 | Franklin | 37 58 28 N | 089 02 26 W |
| Urban Hills Country Club | Locale | 231 | Will | 41 27 42 N | 087 42 48 W |
| Urban Life Center | School | 180 | Cook | 41 48 14 N | 087 35 26 W |
| Urban West Associates Building | Building | 183 | Cook | 41 53 46 N | 087 38 55 W |
| Urbana | Populated Place | 222 | Champaign | 40 06 38 N | 088 12 26 W |
| Urbana Country Club | Locale | 219 | Champaign | 40 07 50 N | 088 12 31 W |
| Urbana High School | School | 221 | Champaign | 40 06 14 N | 088 12 30 W |
| Urbana Middle School | School | 224 | Champaign | 40 06 10 N | 088 12 20 W |
| Urbana Post Office | Post Office | 222 | Champaign | 40 06 41 N | 088 12 25 W |
| Urbandale | Populated Place | 94 | Alexander | 37 03 10 N | 089 11 09 W |
| Ursa | Populated Place | 186 | Adams | 40 04 29 N | 091 22 03 W |
| Ursa Christian Church | Church | 184 | Adams | 40 04 38 N | 091 22 03 W |
| Ursa Creek | Stream | | Adams | 40 04 34 N | 091 23 46 W |
| Urso Heliport | Airport | 237 | Cook | 41 59 59 N | 088 12 19 W |
| Ursuline Academy | School | 183 | Sangamon | 39 49 07 N | 089 38 54 W |
| Ursuline Convent | Church | 190 | Madison | 38 54 24 N | 090 11 53 W |
| Usher Park | Park | 213 | DuPage | 41 58 09 N | 088 00 44 W |
| Ustick | Populated Place | 239 | Whiteside | 41 53 02 N | 089 59 31 W |
| Utah | Populated Place | 226 | Warren | 40 59 03 N | 090 29 16 W |
| Utah Post Office (historical) | Post Office | 235 | Warren | 40 58 36 N | 090 27 58 W |
| Utah School (historical) | School | 131 | Jefferson | 38 11 53 N | 089 01 22 W |
| Utica | Populated Place | 145 | La Salle | 41 20 26 N | 089 00 36 W |
| Utica Cemetery | Cemetery | 136 | Fulton | 40 31 09 N | 089 54 42 W |
| Utica Elementary School | School | 146 | La Salle | 41 20 28 N | 089 00 41 W |
| Utica Pit | Mine | 135 | La Salle | 41 20 01 N | 089 00 59 W |
| Utica Quarry | Mine | 171 | La Salle | 41 20 50 N | 088 59 47 W |
| Utlaut Memorial Hospital | Hospital | 177 | Bond | 38 54 12 N | 089 24 26 W |
| Utley Cemetery | Cemetery | 150 | Johnson | 37 22 40 N | 088 55 24 W |
| Utopia | Populated Place | 215 | DuPage | 41 51 04 N | 087 58 22 W |
| Utterback Cemetery | Cemetery | 164 | Richland | 38 43 57 N | 087 59 23 W |
| V F W Park | Park | 244 | Ogle | 41 54 37 N | 089 03 16 W |
| V H Nelson Elementary School | School | 201 | Cook | 42 02 37 N | 087 49 14 W |
| V I P Travel Agents School | School | 180 | Cook | 41 53 33 N | 087 37 05 W |
| V I T Junior-Senior High School | School | 211 | Fulton | 40 21 27 N | 090 25 08 W |
| V Ralph Dosher Elementary School | School | 189 | Cook | 41 44 46 N | 087 50 20 W |
| V-Day Mine | Mine | 198 | Vermilion | 40 05 00 N | 087 38 29 W |
| Vacetta Plaza Industrial Park | Locale | 174 | Vermilion | 40 08 13 N | 087 37 23 W |
| Vadalabene Center | Building | 168 | Madison | 38 47 46 N | 089 59 59 W |
| Vail Cemetery | Cemetery | 197 | McDonough | 40 19 57 N | 090 36 16 W |
| Vail Memorial Chapel | Church | 188 | Logan | 39 57 40 N | 089 18 42 W |
| Vaile Park | Park | 200 | Lee | 41 50 10 N | 089 30 24 W |
| Vails Island | Island | 189 | Kankakee | 41 09 47 N | 087 36 52 W |
| Vale School (historical) | School | 219 | Henry | 41 20 19 N | 090 08 12 W |
| Valentine Manor | Populated Place | 263 | Lake | 42 13 42 N | 088 06 24 W |
| Valeska Hinton Early Childhood Education Center | School | 155 | Peoria | 40 41 36 N | 089 36 23 W |
| Valevue Lake | Reservoir | 175 | Morgan | 39 48 00 N | 090 13 30 W |
| Valevue Lake Dam | Dam | 175 | Morgan | 39 48 00 N | 090 13 30 W |
| Valhalla Cemetery | Cemetery | 170 | St. Clair | 38 31 49 N | 090 01 51 W |
| Valhalla Memorial Cemetery | Cemetery | 187 | Madison | 38 56 17 N | 090 14 04 W |
| Valier | Populated Place | 140 | Franklin | 38 00 55 N | 089 02 33 W |
| Valier Lake | Reservoir | 137 | Franklin | 38 02 24 N | 089 02 48 W |
| Valier Lake Dam | Dam | 133 | Franklin | 38 02 23 N | 089 02 47 W |
| Valier Mine Pond | Reservoir | 133 | Franklin | 38 02 23 N | 089 02 47 W |
| Valier Patch | Populated Place | 131 | Franklin | 38 01 36 N | 089 02 12 W |
| Vallem School (historical) | School | 284 | Lee | 41 52 36 N | 088 57 41 W |