Shelby County, Illinois
County seat: Shelbyville · Population 20,576 (2025) · 759 sq mi
Shelby County is the 56th most populous of Illinois's 102 counties, with 20,576 people (2025 estimate). Its county seat is Shelbyville. It is part of the Central region, one of the 10 Illinois economic development regions (DCEO). The map shows its 12 cities and towns and the 8 neighboring counties.
Shelby County facts
- County seat
- Shelbyville
- Population (2025 estimate)
- 20,576 −2% since 2020
- Land area
- 759 sq mi 18th largest of 102
- Water area
- 10 sq mi
- Population density
- 27 per sq mi
- Established
- 1827
- Same name
- One of 9 Shelby Counties in the US
- Named after
- Isaac Shelby American politician (1750-1826)
- Largest city
- Shelbyville 4,537
- Median household income
- $72,095
- Cities and towns
- 12 plus 2 CDPs
- ZIP codes
- 22
- Time zone
- Central
- FIPS code
- 17173
Cities and towns in Shelby County
Shelby County has 12 incorporated cities, towns and villages. Populations count the people living inside Shelby County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Shelbyville (county seat) | City | 4,537 | |
| Moweaqua | Village | 1,725 | Christian County |
| Windsor | City | 1,035 | |
| Stewardson | Village | 716 | |
| Findlay | Village | 658 | |
| Strasburg | Village | 518 | |
| Cowden | Village | 497 | |
| Tower Hill | Village | 473 | |
| Herrick | Village | 354 | |
| Sigel | Town | 319 | |
| Oconee | Village | 133 | |
| Pana | City | 103 | Christian County |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Westervelt | 134 | |
| Lakewood | 16 |
ZIP codes in Shelby County
22 ZIP codes reach into Shelby County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 61914 also Moultrie and Macon counties
- 61928 also Moultrie and Coles counties
- 61957 also Moultrie County
- 62080 also Fayette and Montgomery counties
- 62401 also Effingham County
- 62414 also Fayette and Effingham counties
- 62422 also Fayette County
- 62431 also Fayette County
- 62438
- 62444
- 62447 also Cumberland and Coles counties
- 62461 also Effingham County
- 62462 also Cumberland and Effingham counties
- 62463
- 62465
- 62510 also Christian County
- 62534 also Moultrie County
- 62550 also Christian and Macon counties
- 62553 also Montgomery County
- 62557 also Christian and Montgomery counties
- 62565
- 62571
Population of Shelby County, 2020–2025
Shelby County shrank by 415 people (−2%) between April 2020 and July 2025: 459 more deaths than births and a net gain of 54 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 20,921 |
| 2021 | 20,876 |
| 2022 | 20,721 |
| 2023 | 20,604 |
| 2024 | 20,554 |
| 2025 | 20,576 |
Neighboring counties
- Moultrie County northeast · 14,371 people
- Christian County northwest · 33,443 people
- Fayette County southwest · 20,790 people
- Effingham County southeast · 34,519 people
- Macon County north · 99,300 people
- Cumberland County east · 10,208 people
- Montgomery County west · 28,076 people
- Coles County east · 46,607 people
Printable Shelby 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) (104 KB)
- PNG (2400 px) (70 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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