Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| WFYR-FM (Chicago) | Tower | 181 | Cook | 41 52 44 N | 087 38 10 W |
| WGBO-TV (Joliet) | Tower | 179 | Cook | 41 53 56 N | 087 37 23 W |
| WGBQ-FM (Galesburg) | Tower | 242 | Knox | 40 57 43 N | 090 18 30 W |
| WGCA-FM (Quincy) | Tower | 226 | Adams | 39 58 18 N | 091 19 43 W |
| WGCI-AM (Chicago) | Tower | 192 | Cook | 41 44 13 N | 087 42 00 W |
| WGCI-FM (Chicago) | Tower | 177 | Cook | 41 52 57 N | 087 38 15 W |
| WGCY-FM (Gibson City) | Tower | 252 | Ford | 40 34 01 N | 088 20 41 W |
| WGEL-FM (Greenville) | Tower | 152 | Bond | 38 48 11 N | 089 20 56 W |
| WGEM-AM (Quincy) | Tower | 215 | Adams | 39 58 47 N | 091 19 28 W |
| WGEM-FM (Quincy) | Tower | 232 | Adams | 39 57 03 N | 091 19 55 W |
| WGEM-TV (Quincy) | Tower | 232 | Adams | 39 57 03 N | 091 19 55 W |
| WGEN-AM (Geneseo) | Tower | 192 | Henry | 41 26 23 N | 090 09 18 W |
| WGEN-FM (Geneseo) | Tower | 220 | Henry | 41 25 47 N | 090 16 34 W |
| WGEZ-AM (Beloit) | Tower | 229 | Winnebago | 42 29 45 N | 089 01 03 W |
| WGFA-AM (Watseka) | Tower | 191 | Iroquois | 40 47 48 N | 087 45 11 W |
| WGFA-FM (Watseka) | Tower | 191 | Iroquois | 40 47 48 N | 087 45 11 W |
| WGGH-AM (Marion) | Tower | 131 | Williamson | 37 43 47 N | 088 53 44 W |
| WGHS-FM (Glen Ellyn) | Tower | 239 | DuPage | 41 53 46 N | 088 04 14 W |
| WGIL-AM (Galesburg) | Tower | 235 | Knox | 40 56 36 N | 090 20 39 W |
| WGLC-AM (Mendota) | Tower | 250 | La Salle | 41 34 58 N | 089 07 33 W |
| WGLC-FM (Mendota) | Tower | 220 | La Salle | 41 32 16 N | 089 06 25 W |
| WGLO-FM (Pekin) | Tower | 228 | Tazewell | 40 36 23 N | 089 32 20 W |
| WGLT-FM (Normal) | Tower | 240 | McLean | 40 28 46 N | 089 03 12 W |
| WGLT-FM (Normal) | Tower | 236 | McLean | 40 30 33 N | 089 00 00 W |
| WGN Heliport | Airport | 180 | Cook | 41 56 56 N | 087 41 28 W |
| WGN-AM (Chicago) | Tower | 217 | Cook | 42 00 42 N | 088 02 07 W |
| WGN-TV (Chicago) | Tower | 179 | Cook | 41 53 56 N | 087 37 23 W |
| WGRN-FM (Greenville) | Tower | 193 | Bond | 38 53 43 N | 089 24 30 W |
| WGSL-FM (Loves Park) | Tower | 259 | Winnebago | 42 19 18 N | 089 00 42 W |
| Wham Hill Cemetery | Cemetery | 183 | Marion | 38 32 43 N | 088 52 22 W |
| Wharton Field House | Building | 210 | Rock Island | 41 29 31 N | 090 30 35 W |
| Wharton School | School | 186 | Cook | 41 46 29 N | 087 48 36 W |
| WHBF Radio Tower | Tower | 171 | Rock Island | 41 30 36 N | 090 34 22 W |
| WHBF-TV (Rock Island) | Tower | 203 | Scott | 41 32 49 N | 090 28 35 W |
| WHCO-AM (Sparta) | Tower | 155 | Randolph | 38 07 25 N | 089 43 20 W |
| Whealan Camp | Locale | 220 | Cook | 41 42 26 N | 087 52 25 W |
| Whealdon School (historical) | School | 180 | Fulton | 40 17 28 N | 090 18 58 W |
| Wheat Field | Park | 229 | Champaign | 40 05 13 N | 088 11 41 W |
| Wheatland Cemetery | Cemetery | 193 | Will | 41 41 32 N | 088 10 14 W |
| Wheatland Field | Airport | 208 | Kendall | 41 43 17 N | 088 15 55 W |
| Wheatland Park | Park | 216 | DuPage | 41 44 23 N | 088 14 30 W |
| Wheatland Presbyterian Church Cemetery | Cemetery | 215 | Will | 41 39 59 N | 088 15 08 W |
| Wheatland Salem Church | Church | 212 | Will | 41 42 33 N | 088 12 21 W |
| Wheatland School | School | 204 | Will | 41 41 45 N | 088 12 21 W |
| Wheatley Child-Parent Education Center | School | 179 | Cook | 41 39 16 N | 087 36 04 W |
| Wheatley Landing Strip | Airport | 244 | Henry | 41 17 00 N | 090 12 27 W |
| Wheatley School (historical) | School | 209 | Coles | 39 39 06 N | 088 09 31 W |
| Wheaton | Populated Place | 231 | DuPage | 41 51 58 N | 088 06 25 W |
| Wheaton Bible Church | Church | 235 | DuPage | 41 52 08 N | 088 06 21 W |
| Wheaton Cemetery | Cemetery | 228 | DuPage | 41 51 04 N | 088 06 42 W |
| Wheaton Chinese Alliance Church | Church | 230 | DuPage | 41 50 23 N | 088 06 02 W |
| Wheaton Christian Reformed Church | Church | 236 | DuPage | 41 52 26 N | 088 05 43 W |
| Wheaton Christian School | School | 234 | DuPage | 41 52 22 N | 088 05 52 W |
| Wheaton College | School | 234 | DuPage | 41 52 13 N | 088 05 55 W |
| Wheaton College Academy | School | 232 | DuPage | 41 54 05 N | 088 11 11 W |
| Wheaton Driving Park (historical) | Park | 229 | DuPage | 41 53 06 N | 088 05 56 W |
| Wheaton Evangelical Free Church | Church | 235 | DuPage | 41 51 30 N | 088 05 54 W |
| Wheaton High School | School | 234 | DuPage | 41 53 57 N | 088 11 12 W |
| Wheaton Industrial Park | Locale | 229 | DuPage | 41 51 55 N | 088 07 10 W |
| Wheaton Lake (historical) | Lake | 138 | Fulton | 40 21 01 N | 090 09 40 W |
| Wheaton North High School | School | 232 | DuPage | 41 53 02 N | 088 06 58 W |
| Wheaton Post Office | Post Office | 230 | DuPage | 41 51 56 N | 088 06 37 W |
| Wheaton Public Library | Building | 232 | DuPage | 41 52 01 N | 088 06 17 W |
| Wheaton Wesleyan Church | Church | 234 | DuPage | 41 51 09 N | 088 05 32 W |
| Wheaton-Warrenville Middle School | School | 232 | DuPage | 41 49 58 N | 088 08 56 W |
| Wheeler | Populated Place | 171 | Jasper | 39 02 48 N | 088 18 59 W |
| Wheeler Cemetery | Cemetery | 177 | Grundy | 41 12 16 N | 088 23 44 W |
| Wheeler Cemetery | Cemetery | 174 | Jasper | 39 02 28 N | 088 18 50 W |
| Wheeler Cemetery | Cemetery | 195 | Macon | 39 53 00 N | 088 51 29 W |
| Wheeler Cemetery | Cemetery | 193 | Macoupin | 39 09 43 N | 089 51 50 W |
| Wheeler Cemetery | Cemetery | 119 | Wabash | 38 19 11 N | 087 57 08 W |
| Wheeler Chapel Christian Methodist Episcopal Church | Church | 183 | Cook | 41 38 38 N | 087 42 26 W |
| Wheeler Creek | Stream | | Hamilton | 37 59 21 N | 088 26 20 W |
| Wheeler Creek Drain | Canal | 113 | Hamilton | 38 00 56 N | 088 26 51 W |
| Wheeler Park | Park | 213 | Kane | 41 53 43 N | 088 18 22 W |
| Wheeler Post Office | Post Office | 173 | Jasper | 39 02 43 N | 088 18 59 W |
| Wheeler Ridge | Ridge | 208 | Brown | 39 55 16 N | 090 44 12 W |
| Wheeler School | School | 138 | Peoria | 40 34 48 N | 089 41 38 W |
| Wheeler School | School | 227 | Winnebago | 42 29 24 N | 089 01 55 W |
| Wheeler School (historical) | School | 134 | Clay | 38 37 46 N | 088 18 44 W |
| Wheeler School (historical) | School | 162 | Crawford | 38 55 40 N | 087 35 25 W |
| Wheeling | Populated Place | 198 | Cook | 42 08 21 N | 087 55 44 W |
| Wheeling Cemetery | Cemetery | 197 | Cook | 42 08 20 N | 087 54 50 W |
| Wheeling Center School (historical) | School | 205 | Cook | 42 06 34 N | 087 56 49 W |
| Wheeling Drainage Ditch | Canal | 194 | Cook | 42 08 14 N | 087 55 02 W |
| Wheeling High School | School | 202 | Cook | 42 07 34 N | 087 56 18 W |
| Wheeling Municipal Center | Building | 197 | Cook | 42 08 19 N | 087 55 17 W |
| Wheeling Post Office | Post Office | 197 | Cook | 42 08 23 N | 087 55 19 W |
| Wheeling Shopping Center | Locale | 198 | Cook | 42 08 21 N | 087 54 32 W |
| Wheeling Township Hall | Building | 215 | Cook | 42 06 24 N | 087 58 51 W |
| Wheelock School (historical) | School | 178 | Whiteside | 41 37 55 N | 090 07 54 W |
| Whetstone Cemetery | Cemetery | 228 | Coles | 39 26 34 N | 088 05 48 W |
| Whetstone Creek | Stream | | Coles | 39 28 06 N | 088 07 35 W |
| WHFH-FM (Flossmoor) | Tower | 210 | Cook | 41 32 43 N | 087 41 30 W |
| Whiaker Cemetery | Cemetery | 183 | Adams | 39 51 24 N | 090 57 00 W |
| Whig Hill School | School | 241 | Winnebago | 42 18 30 N | 089 07 00 W |
| Whipple Hall | Building | 202 | Morgan | 39 43 56 N | 090 14 51 W |
| Whipple School (historical) | School | 195 | La Salle | 41 23 22 N | 089 01 47 W |
| Whippoorwill Branch | Stream | | Vermilion | 39 58 44 N | 087 30 37 W |
| Whippoorwill Hollow | Valley | | Pike | 39 38 15 N | 091 05 23 W |
| Whippoorwill Park | Park | 235 | Cook | 42 05 23 N | 088 03 59 W |
| Whippoorwill Picnic Area | Locale | 167 | Marion | 38 43 13 N | 088 45 49 W |
| Whippoorwill School (historical) | School | 190 | Macoupin | 39 31 18 N | 090 01 58 W |
| Whiskey Point (subdivision) | Populated Place | 182 | Cook | 41 48 37 N | 087 39 45 W |
| Whiskey Point (subdivision) | Populated Place | 187 | Cook | 41 55 00 N | 087 45 21 W |
| Whiskey Row (subdivision) | Populated Place | 181 | Cook | 41 49 09 N | 087 39 55 W |
| Whisky Creek | Stream | | Iroquois | 40 34 39 N | 087 47 37 W |
| Whisky Hollow | Valley | | Jo Daviess | 42 27 55 N | 090 34 56 W |
| Whisky Point | Cape | 223 | Lake | 42 26 38 N | 088 09 57 W |
| Whispering Lake Park | Park | 258 | Cook | 42 05 37 N | 088 07 22 W |