Pike County, Illinois
County seat: Pittsfield · Population 14,231 (2025) · 831 sq mi
Pike County is the 73rd most populous of Illinois's 102 counties, with 14,231 people (2025 estimate). Its county seat is Pittsfield. It is part of the West Central region, one of the 10 Illinois economic development regions (DCEO). The map shows its 17 cities and towns and the 9 neighboring counties.
Pike County facts
- County seat
- Pittsfield
- Population (2025 estimate)
- 14,231 −3.4% since 2020
- Land area
- 831 sq mi 14th largest of 102
- Water area
- 18 sq mi
- Population density
- 17 per sq mi
- Established
- 1821
- Same name
- One of 10 Pike Counties in the US
- Named after
- Zebulon Pike American military officer, explorer, and writer (1779-1813)
- Largest city
- Pittsfield 4,041
- Median household income
- $59,777
- Cities and towns
- 17 plus 1 CDPs
- ZIP codes
- 16
- Time zone
- Central
- FIPS code
- 17149
Cities and towns in Pike County
Pike County has 17 incorporated cities, towns and villages. Populations count the people living inside Pike County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Pittsfield (county seat) | City | 4,041 | |
| Barry | City | 1,247 | |
| Griggsville | City | 1,047 | |
| Pleasant Hill | Village | 895 | |
| Hull | Village | 376 | |
| New Canton | Town | 325 | |
| Perry | Village | 302 | |
| Nebo | Village | 270 | |
| Milton | Village | 206 | |
| Kinderhook | Village | 188 | |
| Baylis | Village | 165 | |
| New Salem | Village | 116 | |
| Pearl | Village | 108 | |
| Detroit | Village | 74 | |
| El Dara | Village | 61 | |
| Florence | Village | 17 | |
| Valley City | Village | 13 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Rockport | 67 |
ZIP codes in Pike County
16 ZIP codes reach into Pike County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 62312 also Adams County
- 62314 also Adams County
- 62323 also Brown County
- 62340
- 62343 also Adams County
- 62345
- 62352
- 62353 also Brown and Schuyler counties
- 62355 also Calhoun County
- 62356
- 62357
- 62361
- 62362
- 62363
- 62366
- 62370
Population of Pike County, 2020–2025
Pike County shrank by 497 people (−3.4%) between April 2020 and July 2025: 341 more deaths than births and a net loss of 160 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 14,635 |
| 2021 | 14,600 |
| 2022 | 14,539 |
| 2023 | 14,351 |
| 2024 | 14,286 |
| 2025 | 14,231 |
Neighboring counties
- Adams County northwest · 64,267 people
- Pike County, Missouri southwest · 17,955 people
- Scott County east · 4,866 people
- Brown County north · 6,401 people
- Calhoun County south · 4,300 people
- Ralls County, Missouri west · 10,444 people
- Greene County southeast · 11,313 people
- Marion County, Missouri west · 28,525 people
- Morgan County east · 32,515 people
Printable Pike County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (114 KB)
- PNG (2400 px) (89 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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