Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Pinnacle Hill Cemetery | Cemetery | 264 | Winnebago | 42 28 24 N | 088 58 46 W |
| Pinoak Lake | Lake | 132 | Mason | 40 06 21 N | 090 17 30 W |
| Pinoak School (historical) | School | 163 | Greene | 39 17 40 N | 090 10 38 W |
| Pint Creek | Stream | | Fayette | 39 11 25 N | 088 56 59 W |
| Pioneer | Populated Place | 219 | Peoria | 40 46 58 N | 089 39 17 W |
| Pioneer Baptist Church | Church | 186 | Cook | 41 40 37 N | 087 39 50 W |
| Pioneer Boat Club (historical) | Locale | 176 | Cook | 41 53 18 N | 087 37 32 W |
| Pioneer Cemetery | Cemetery | 225 | Bureau | 41 25 59 N | 089 23 38 W |
| Pioneer Cemetery | Cemetery | 232 | DuPage | 41 50 59 N | 088 15 20 W |
| Pioneer Cemetery | Cemetery | 141 | Madison | 38 45 34 N | 090 00 26 W |
| Pioneer Cemetery | Cemetery | 263 | McHenry | 42 17 55 N | 088 30 04 W |
| Pioneer Cemetery | Cemetery | 195 | Piatt | 39 58 56 N | 088 39 10 W |
| Pioneer Cemetery | Cemetery | 228 | Warren | 40 54 48 N | 090 38 28 W |
| Pioneer Cemetery | Cemetery | 216 | Will | 41 31 40 N | 087 53 19 W |
| Pioneer Court | Locale | 180 | Cook | 41 53 23 N | 087 37 23 W |
| Pioneer Elementary School | School | 230 | DuPage | 41 52 32 N | 088 12 53 W |
| Pioneer Gothic Church | Church | 192 | Livingston | 41 05 44 N | 088 25 37 W |
| Pioneer Junior High School | School | 222 | Peoria | 40 51 46 N | 089 40 39 W |
| Pioneer Park | Park | 190 | Cook | 41 51 35 N | 087 51 42 W |
| Pioneer Park | Park | 210 | Cook | 42 04 33 N | 087 59 38 W |
| Pioneer Park | Park | 181 | Cook | 41 35 46 N | 087 35 15 W |
| Pioneer Park | Park | 226 | DeKalb | 41 46 10 N | 088 39 01 W |
| Pioneer Park | Park | 227 | DuPage | 41 52 23 N | 088 12 45 W |
| Pioneer Park | Park | 204 | DuPage | 41 53 02 N | 087 56 40 W |
| Pioneer Park | Park | 205 | Kane | 41 45 52 N | 088 23 21 W |
| Pioneer Park | Park | 193 | Kankakee | 41 07 37 N | 087 50 53 W |
| Pioneer Park County Forest Preserve | Park | 200 | DuPage | 41 45 11 N | 088 08 00 W |
| Pioneer Place Home for the Aged | Building | 184 | Cook | 42 03 36 N | 087 42 24 W |
| Pioneer Saints Cemetery | Cemetery | 200 | Hancock | 40 32 12 N | 091 21 03 W |
| Pioneer School (historical) | School | 212 | Hancock | 40 28 34 N | 091 11 53 W |
| Pioneer School (historical) | School | 224 | Mercer | 41 06 30 N | 090 31 56 W |
| Pioneer Square Shopping Center | Locale | 238 | Peoria | 40 46 48 N | 089 37 20 W |
| Pioneer Woods | Woods | 193 | Cook | 41 41 51 N | 087 52 18 W |
| Pioneers Cemetery | Cemetery | 281 | Stephenson | 42 24 05 N | 089 29 43 W |
| Piopolis | Populated Place | 125 | Hamilton | 38 11 01 N | 088 33 41 W |
| Piotrowski Park | Park | 181 | Cook | 41 50 05 N | 087 43 50 W |
| Piper Airport | Airport | 207 | Bureau | 41 22 04 N | 089 25 51 W |
| Piper City | Populated Place | 205 | Ford | 40 45 24 N | 088 11 28 W |
| Piper City Post Office | Post Office | 205 | Ford | 40 45 32 N | 088 11 32 W |
| Piper Hall | Building | 182 | Cook | 41 59 55 N | 087 39 20 W |
| Piper School | School | 187 | Cook | 41 50 44 N | 087 47 43 W |
| Piper School | School | 177 | Sangamon | 39 50 33 N | 089 37 02 W |
| Piper School (historical) | School | 239 | Warren | 40 40 44 N | 090 46 13 W |
| Piper School (historical) | School | 212 | Will | 41 18 38 N | 087 48 14 W |
| Pipers Alley Commercial Mall Shopping Center | Locale | 182 | Cook | 41 54 41 N | 087 38 06 W |
| Pipestone Creek | Stream | | Perry | 37 57 14 N | 089 25 49 W |
| Pirie Elementary School | School | 180 | Cook | 41 44 27 N | 087 36 28 W |
| Piscasaw Creek | Stream | | Boone | 42 15 44 N | 088 49 02 W |
| Pisgah | Populated Place | 205 | Morgan | 39 40 07 N | 090 07 32 W |
| Pisgah Cemetery | Cemetery | 201 | Morgan | 39 40 53 N | 090 07 12 W |
| Pisgah Church | Church | 111 | Gallatin | 37 39 40 N | 088 16 21 W |
| Pisgah Church | Church | 144 | Lawrence | 38 38 47 N | 087 44 29 W |
| Pisgah Church (historical) | Church | 195 | Morgan | 39 42 58 N | 090 06 14 W |
| Pisgah Election Precinct | Civil | 205 | Morgan | 39 40 10 N | 090 07 01 W |
| Pisgah School (historical) | School | 196 | Fulton | 40 42 16 N | 090 10 36 W |
| Pisgah School (historical) | School | 113 | Gallatin | 37 39 44 N | 088 16 54 W |
| Pisgah School (historical) | School | 164 | Johnson | 37 24 01 N | 089 01 12 W |
| Pisgah School (historical) | School | 183 | Madison | 38 56 50 N | 089 42 11 W |
| Piskey Cemetery | Cemetery | 165 | Jefferson | 38 24 42 N | 089 04 14 W |
| Pistakee | Populated Place | 226 | McHenry | 42 24 42 N | 088 12 00 W |
| Pistakee Bay | Bay | 225 | McHenry | 42 22 17 N | 088 13 03 W |
| Pistakee Bog Nature Preserve | Park | 224 | Lake | 42 21 35 N | 088 11 54 W |
| Pistakee Golf Course | Locale | 231 | McHenry | 42 21 42 N | 088 12 56 W |
| Pistakee Highlands | Populated Place | 231 | McHenry | 42 24 31 N | 088 12 23 W |
| Pistakee Lake | Lake | 223 | McHenry | 42 23 12 N | 088 11 58 W |
| Pit 1 Cedar Creek Mine | Mine | 189 | Schuyler | 40 08 41 N | 090 44 18 W |
| Pit 1 Triple S Mine | Mine | 194 | Adams | 40 10 21 N | 090 54 55 W |
| Pit 10 Cedar Creek Mine | Mine | 189 | Schuyler | 40 06 51 N | 090 48 42 W |
| Pit 11 Cedar Creek Mine | Mine | 183 | Schuyler | 40 06 21 N | 090 47 55 W |
| Pit 12 Cedar Creek Mine | Mine | 191 | Schuyler | 40 06 33 N | 090 49 26 W |
| Pit 13 Cedar Creek Mine | Mine | 187 | Schuyler | 40 06 30 N | 090 45 02 W |
| Pit 14 Cedar Creek Mine | Mine | 187 | Brown | 40 06 01 N | 090 45 48 W |
| Pit 15 Cedar Creek Mine | Mine | 186 | Brown | 40 05 35 N | 090 46 22 W |
| Pit 16 Cedar Creek Mine | Mine | 190 | Brown | 40 04 17 N | 090 48 03 W |
| Pit 17 Cedar Creek Mine | Mine | 195 | Schuyler | 40 09 38 N | 090 50 00 W |
| Pit 18 Cedar Creek Mine | Mine | 196 | Schuyler | 40 10 17 N | 090 49 59 W |
| Pit 2 Cedar Creek Mine | Mine | 192 | Schuyler | 40 08 35 N | 090 45 49 W |
| Pit 2 Triple S Mine | Mine | 189 | Adams | 40 09 54 N | 090 54 53 W |
| Pit 3 Cedar Creek Mine | Mine | 189 | Schuyler | 40 08 23 N | 090 45 50 W |
| Pit 3 Triple S Mine | Mine | 195 | Adams | 40 09 41 N | 090 54 56 W |
| Pit 4 Cedar Creek Mine | Mine | 196 | Schuyler | 40 08 16 N | 090 50 00 W |
| Pit 4 Triple S Mine | Mine | 197 | Schuyler | 40 09 53 N | 090 54 36 W |
| Pit 5 Cedar Creek Mine | Mine | 183 | Schuyler | 40 08 22 N | 090 44 20 W |
| Pit 5 Triple S Mine | Mine | 195 | Schuyler | 40 10 24 N | 090 54 29 W |
| Pit 6 Cedar Creek Mine | Mine | 186 | Schuyler | 40 08 39 N | 090 49 04 W |
| Pit 7 Cedar Creek Mine | Mine | 181 | Schuyler | 40 08 10 N | 090 43 46 W |
| Pit 7 Triple S Mine | Mine | 191 | Hancock | 40 12 40 N | 090 57 22 W |
| Pit 8 Cedar Creek Mine | Mine | 199 | Schuyler | 40 08 46 N | 090 50 09 W |
| Pit 9 Cedar Creek Mine | Mine | 183 | Schuyler | 40 06 58 N | 090 46 41 W |
| Pitcherville (historical) | Populated Place | 293 | Jo Daviess | 42 21 52 N | 090 00 06 W |
| Pitchin | Populated Place | 202 | Iroquois | 40 36 11 N | 087 51 59 W |
| Pitman Post Office (historical) | Post Office | 216 | Adams | 40 08 50 N | 091 00 08 W |
| Pittenger Cemetery | Cemetery | 172 | Schuyler | 40 12 56 N | 090 28 03 W |
| Pittinger School (historical) | School | 209 | McDonough | 40 36 58 N | 090 32 30 W |
| Pitts School (historical) | School | 220 | La Salle | 41 08 48 N | 089 01 45 W |
| Pittsburg | Populated Place | 162 | Fayette | 38 52 17 N | 089 12 42 W |
| Pittsburg | Populated Place | 142 | Williamson | 37 46 37 N | 088 50 58 W |
| Pittsfield | Populated Place | 223 | Pike | 39 36 28 N | 090 48 18 W |
| Pittsfield Building | Building | 181 | Cook | 41 52 58 N | 087 37 33 W |
| Pittsfield East Elementary School | School | 220 | Pike | 39 36 35 N | 090 48 03 W |
| Pittsfield High School | School | 216 | Pike | 39 36 00 N | 090 48 16 W |
| Pittsfield Historic District | Park | 223 | Pike | 39 36 20 N | 090 48 21 W |
| Pittsfield Penstone Municipal Airport | Airport | 213 | Pike | 39 38 22 N | 090 46 45 W |
| Pittsfield Post Office | Post Office | 224 | Pike | 39 36 21 N | 090 48 23 W |
| Pittsfield South Elementary School | School | 223 | Pike | 39 35 57 N | 090 48 36 W |
| Pittsfield West Cemetery | Cemetery | 236 | Pike | 39 36 25 N | 090 49 24 W |
| Pittwood | Populated Place | 196 | Iroquois | 40 51 39 N | 087 43 46 W |
| Pivot Point Beauty School | School | 186 | Cook | 42 01 09 N | 087 40 35 W |
| Place Mall Shopping Center | Locale | 213 | Cook | 41 36 44 N | 087 51 03 W |
| Placerdale (subdivision) | Populated Place | 187 | Cook | 41 40 46 N | 087 38 42 W |