Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Fredonia School (historical) | School | 227 | Stark | 41 08 30 N | 089 41 44 W |
| Fredrich Memorial Park | Cemetery | 213 | DuPage | 41 45 51 N | 088 09 12 W |
| Freds Creek | Stream | | Wayne | 38 16 17 N | 088 14 32 W |
| Free Church | Church | 263 | Winnebago | 42 19 09 N | 089 00 07 W |
| Free Lance Deliverance Church | Church | 182 | Cook | 41 54 08 N | 087 41 41 W |
| Free Methodist Church | Church | 199 | Adams | 39 57 02 N | 091 22 50 W |
| Free Methodist Church | Church | 178 | Bond | 38 53 32 N | 089 24 29 W |
| Free Methodist Church | Church | 189 | Christian | 39 32 41 N | 089 18 08 W |
| Free Methodist Church | Church | 212 | Christian | 39 23 16 N | 089 05 20 W |
| Free Methodist Church | Church | 219 | Coles | 39 28 37 N | 088 22 29 W |
| Free Methodist Church | Church | 222 | De Witt | 40 09 26 N | 088 57 13 W |
| Free Methodist Church | Church | 180 | Effingham | 39 07 16 N | 088 32 58 W |
| Free Methodist Church | Church | 154 | Fayette | 38 57 45 N | 089 05 39 W |
| Free Methodist Church | Church | 197 | Fulton | 40 33 46 N | 090 00 28 W |
| Free Methodist Church | Church | 154 | Jefferson | 38 18 40 N | 088 54 47 W |
| Free Methodist Church | Church | 136 | Lawrence | 38 43 33 N | 087 40 53 W |
| Free Methodist Church | Church | 142 | Lawrence | 38 35 25 N | 087 38 46 W |
| Free Methodist Church | Church | 208 | Livingston | 40 44 52 N | 088 30 53 W |
| Free Methodist Church | Church | 182 | Logan | 40 08 56 N | 089 22 31 W |
| Free Methodist Church | Church | 205 | Macon | 39 50 36 N | 088 57 37 W |
| Free Methodist Church | Church | 166 | Madison | 38 53 41 N | 090 08 44 W |
| Free Methodist Church | Church | 162 | Marion | 38 37 33 N | 088 56 26 W |
| Free Methodist Church | Church | 273 | McHenry | 42 19 29 N | 088 26 33 W |
| Free Methodist Church | Church | 250 | McLean | 40 29 58 N | 088 58 42 W |
| Free Methodist Church | Church | 190 | Montgomery | 39 09 37 N | 089 29 43 W |
| Free Methodist Church | Church | 200 | Moultrie | 39 38 43 N | 088 44 28 W |
| Free Methodist Church | Church | 144 | Richland | 38 43 38 N | 088 05 14 W |
| Free Methodist Church | Church | 116 | Saline | 37 48 28 N | 088 27 02 W |
| Free Methodist Church | Church | 202 | Schuyler | 40 07 04 N | 090 33 44 W |
| Free Methodist Church | Church | 195 | Shelby | 39 24 30 N | 088 48 20 W |
| Free Methodist Church | Church | 146 | Tazewell | 40 34 04 N | 089 38 52 W |
| Free Methodist Church | Church | 204 | Tazewell | 40 39 19 N | 089 34 11 W |
| Free Methodist Church | Church | 128 | Wabash | 38 24 28 N | 087 46 05 W |
| Free Methodist Church of Albion | Church | 146 | Edwards | 38 22 31 N | 088 03 42 W |
| Free Methodist Church of Sterling | Church | 203 | Whiteside | 41 47 45 N | 089 42 25 W |
| Free Methodist Episcopal Church | Church | 207 | Douglas | 39 41 13 N | 088 18 37 W |
| Free Pentecostal Church of the Living God | Church | 186 | Cook | 41 54 57 N | 087 44 49 W |
| Free Salvation Missionary Baptist Church | Church | 178 | Cook | 41 44 13 N | 087 35 23 W |
| Free School of Business Management | School | 178 | Cook | 41 46 03 N | 087 34 00 W |
| Free Silver School (historical) | School | 153 | Williamson | 37 36 37 N | 088 48 04 W |
| Free Sons of Israel Cemetery | Cemetery | 188 | Cook | 41 51 35 N | 087 49 06 W |
| Free Will Church | Church | 201 | Fulton | 40 33 36 N | 090 12 55 W |
| Free Will Missionary Baptist Church | Church | 182 | Cook | 41 51 59 N | 087 41 34 W |
| Freeburg | Populated Place | 155 | St. Clair | 38 25 39 N | 089 54 49 W |
| Freeburg City Hall | Building | 156 | St. Clair | 38 25 31 N | 089 54 39 W |
| Freeburg Community High School | School | 140 | St. Clair | 38 25 22 N | 089 52 45 W |
| Freeburg First Baptist Church | Church | 155 | St. Clair | 38 25 33 N | 089 54 47 W |
| Freeburg Post Office | Post Office | 156 | St. Clair | 38 25 34 N | 089 54 39 W |
| Freeburg Recreation Park | Park | 153 | St. Clair | 38 25 22 N | 089 54 09 W |
| Freed School (historical) | School | 227 | McLean | 40 43 02 N | 088 52 54 W |
| Freedom Baptist Church | Church | 179 | Clark | 39 19 58 N | 087 45 50 W |
| Freedom Cemetery | Cemetery | 143 | St. Clair | 38 18 54 N | 089 59 55 W |
| Freedom Centre (historical) | Populated Place | 201 | La Salle | 41 29 04 N | 088 52 50 W |
| Freedom Church | Church | 197 | La Salle | 41 28 13 N | 088 52 04 W |
| Freedom Church | Church | 153 | Williamson | 37 40 12 N | 088 56 48 W |
| Freedom Farm Lake | Reservoir | 143 | St. Clair | 38 27 00 N | 089 51 42 W |
| Freedom Farm Lake Dam | Dam | 143 | St. Clair | 38 27 00 N | 089 51 42 W |
| Freedom Field | Airport | 195 | Pike | 39 34 01 N | 090 36 43 W |
| Freedom Lutheran Cemetery | Cemetery | 197 | La Salle | 41 28 12 N | 088 52 29 W |
| Freedom Park | Park | 181 | Cook | 41 42 10 N | 087 46 27 W |
| Freedom Park | Park | 242 | Cook | 42 00 40 N | 088 06 30 W |
| Freedom Park | Park | 185 | Cook | 41 49 27 N | 087 47 12 W |
| Freedom School (historical) | School | 275 | Carroll | 42 07 53 N | 089 53 25 W |
| Freedom School (historical) | School | 180 | Clark | 39 19 54 N | 087 45 50 W |
| Freedom School (historical) | School | 139 | Richland | 38 44 45 N | 088 14 18 W |
| Freedom Temple Church of God in Christ | Church | 181 | Cook | 41 47 05 N | 087 36 36 W |
| Freedom Worship Center | Church | 131 | Wayne | 38 22 47 N | 088 21 45 W |
| Freedville | Populated Place | 196 | Iroquois | 40 51 39 N | 087 44 35 W |
| Freedwell Branch | Stream | | Vermilion | 39 55 40 N | 087 51 02 W |
| Freehill School (historical) | School | 238 | Livingston | 40 37 54 N | 088 17 27 W |
| Freeland Cemetery | Cemetery | 170 | Henderson | 40 41 41 N | 091 02 28 W |
| Freeland Junction (historical) | Locale | 201 | Iroquois | 40 36 43 N | 087 41 35 W |
| Freeland School (historical) | School | 219 | DeKalb | 41 42 42 N | 088 38 24 W |
| Freeman | Populated Place | 274 | Kane | 42 07 29 N | 088 23 18 W |
| Freeman Cemetery | Cemetery | 172 | Fulton | 40 21 19 N | 090 12 47 W |
| Freeman Cemetery | Cemetery | 161 | Jasper | 38 56 19 N | 088 20 45 W |
| Freeman Cemetery | Cemetery | 199 | Tazewell | 40 22 54 N | 089 23 30 W |
| Freeman Evangelical Lutheran Church of Chicago | Church | 189 | Cook | 41 55 25 N | 087 46 04 W |
| Freeman Kame Nature Preserve | Park | 270 | Kane | 42 07 40 N | 088 23 37 W |
| Freeman Number 4 Mine | Mine | 147 | Williamson | 37 47 40 N | 088 52 33 W |
| Freeman Park | Park | 222 | Kane | 42 06 10 N | 088 16 38 W |
| Freeman School | School | 228 | Winnebago | 42 15 54 N | 089 05 00 W |
| Freeman School (historical) | School | 186 | Fulton | 40 17 23 N | 090 21 49 W |
| Freeman Spur | Populated Place | 121 | Williamson | 37 51 40 N | 088 59 50 W |
| Freeman Spur Cemetery | Cemetery | 125 | Williamson | 37 51 29 N | 089 00 13 W |
| Freemans Fashion Academy | School | 183 | Cook | 41 52 54 N | 087 37 34 W |
| Freemans Kane County Forest Preserve | Park | 272 | Kane | 42 07 39 N | 088 23 32 W |
| Freenanton (historical) | Populated Place | 182 | Effingham | 39 04 33 N | 088 40 50 W |
| Freeport | Populated Place | 237 | Stephenson | 42 17 48 N | 089 37 16 W |
| Freeport Christian Academy | School | 264 | Stephenson | 42 17 02 N | 089 39 54 W |
| Freeport City Cemetery | Cemetery | 253 | Stephenson | 42 17 33 N | 089 38 07 W |
| Freeport City Hall | Building | 243 | Stephenson | 42 17 51 N | 089 37 23 W |
| Freeport Clinic | Hospital | 263 | Stephenson | 42 17 46 N | 089 38 19 W |
| Freeport Country Club | Locale | 257 | Stephenson | 42 16 54 N | 089 39 09 W |
| Freeport Creek | Stream | | Crawford | 38 54 51 N | 087 53 03 W |
| Freeport High School | School | 248 | Stephenson | 42 17 17 N | 089 37 44 W |
| Freeport Junior High School | School | 250 | Stephenson | 42 17 12 N | 089 37 45 W |
| Freeport Memorial Hospital | Hospital | 266 | Stephenson | 42 17 42 N | 089 38 18 W |
| Freeport Mennonite Cemetery | Cemetery | 259 | Stephenson | 42 21 37 N | 089 32 43 W |
| Freeport Post Office | Post Office | 237 | Stephenson | 42 17 58 N | 089 37 13 W |
| Freeport Prairie Nature Preserve | Park | 245 | Stephenson | 42 16 35 N | 089 37 24 W |
| Freeport Public Library | Building | 244 | Stephenson | 42 17 50 N | 089 37 26 W |
| Freeport Raceway | Locale | 234 | Stephenson | 42 16 23 N | 089 37 22 W |
| Freer Cemetery | Cemetery | 163 | Greene | 39 15 23 N | 090 16 18 W |
| Freer Hall | Building | 226 | Champaign | 40 06 17 N | 088 13 22 W |
| Freesen Lake | Reservoir | 170 | Scott | 39 42 06 N | 090 27 48 W |
| Freesen Lake Dam | Dam | 170 | Scott | 39 42 06 N | 090 27 48 W |
| Freewill Baptist Church | Church | 151 | Jefferson | 38 18 56 N | 088 54 16 W |
| Freewill Church (historical) | Church | 160 | Williamson | 37 37 35 N | 089 08 25 W |
| Freewill Church of God in Christ | Church | 184 | Cook | 41 53 44 N | 087 43 01 W |