Moultrie County, Illinois
County seat: Sullivan · Population 14,371 (2025) · 336 sq mi
Moultrie County is the 72nd most populous of Illinois's 102 counties, with 14,371 people (2025 estimate). Its county seat is Sullivan. It is part of the Southeast region, one of the 10 Illinois economic development regions (DCEO). The map shows its 7 cities and towns and the 5 neighboring counties.
Moultrie County facts
- County seat
- Sullivan
- Population (2025 estimate)
- 14,371 −1.1% since 2020
- Land area
- 336 sq mi 86th largest of 102
- Water area
- 9 sq mi
- Population density
- 43 per sq mi
- Established
- 1843
- Named after
- William Moultrie American politician
- Largest city
- Sullivan 4,310
- Median household income
- $71,784
- Cities and towns
- 7 plus 1 CDPs
- ZIP codes
- 11
- Time zone
- Central
- FIPS code
- 17139
Cities and towns in Moultrie County
Moultrie County has 7 incorporated cities, towns and villages. Populations count the people living inside Moultrie County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Sullivan (county seat) | City | 4,310 | |
| Bethany | Village | 1,200 | |
| Lovington | Village | 1,010 | |
| Arthur | Village | 809 | Douglas County |
| Dalton City | Village | 432 | |
| Gays | Village | 212 | |
| Allenville | Village | 129 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Lake City | 92 |
ZIP codes in Moultrie County
11 ZIP codes reach into Moultrie County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 61911 also Douglas and Coles counties
- 61913 also Piatt and Douglas counties
- 61914 also Shelby and Macon counties
- 61925 also Macon County
- 61928 also Shelby and Coles counties
- 61929 also Piatt County
- 61937 also Macon County
- 61938 also Coles and Cumberland counties
- 61951 also Coles County
- 61957 also Shelby County
- 62534 also Shelby County
Population of Moultrie County, 2020–2025
Moultrie County shrank by 159 people (−1.1%) between April 2020 and July 2025: 104 more deaths than births and a net loss of 61 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 14,485 |
| 2021 | 14,563 |
| 2022 | 14,354 |
| 2023 | 14,339 |
| 2024 | 14,442 |
| 2025 | 14,371 |
Neighboring counties
- Shelby County southwest · 20,576 people
- Piatt County north · 16,791 people
- Coles County east · 46,607 people
- Macon County northwest · 99,300 people
- Douglas County northeast · 19,880 people
Printable Moultrie 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) (77 KB)
- PNG (2400 px) (64 KB)
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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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