Fulton County, Illinois
County seat: Lewistown · Population 32,901 (2025) · 866 sq mi
Fulton County is the 44th most populous of Illinois's 102 counties, with 32,901 people (2025 estimate). Its county seat is Lewistown. It is part of the North Central region, one of the 10 Illinois economic development regions (DCEO). The map shows its 20 cities and towns and the 7 neighboring counties.
Fulton County facts
- County seat
- Lewistown
- Population (2025 estimate)
- 32,901 −2.3% since 2020
- Land area
- 866 sq mi 10th largest of 102
- Water area
- 17 sq mi
- Population density
- 38 per sq mi
- Established
- 1823
- Same name
- One of 8 Fulton Counties in the US
- Named after
- Robert Fulton American engineer and inventor (1765–1815)
- Largest city
- Canton 13,297
- Median household income
- $60,599
- Cities and towns
- 20
- ZIP codes
- 24
- Time zone
- Central
- FIPS code
- 17057
Cities and towns in Fulton County
Fulton County has 20 incorporated cities, towns and villages. Populations count the people living inside Fulton County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Canton | City | 13,297 | |
| Farmington | City | 2,298 | Peoria County |
| Lewistown (county seat) | City | 1,962 | |
| Cuba | City | 1,131 | |
| Astoria | Town | 882 | |
| Avon | Village | 668 | Warren County |
| Vermont | Village | 557 | |
| St. David | Village | 505 | |
| Ipava | Village | 418 | |
| Fairview | Village | 410 | |
| London Mills | Village | 338 | Knox County |
| Table Grove | Village | 329 | |
| Dunfermline | Village | 252 | |
| Smithfield | Village | 181 | |
| Bryant | Village | 168 | |
| Norris | Village | 168 | |
| Banner | Village | 166 | |
| Marietta | Village | 97 | |
| Liverpool | Village | 89 | |
| Ellisville | Village | 85 |
ZIP codes in Fulton County
24 ZIP codes reach into Fulton County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 61415 also Warren County
- 61427
- 61431
- 61432
- 61433
- 61441
- 61459 also McDonough County
- 61474 also Knox and Warren counties
- 61477
- 61482 also McDonough County
- 61484 also McDonough and Schuyler counties
- 61501
- 61519
- 61520
- 61524
- 61531 also Knox and Peoria counties
- 61533 also Peoria County
- 61542
- 61543
- 61544 also Knox County
- 61553
- 61563
- 61569 also Peoria County
- 62644 also Mason County
Population of Fulton County, 2020–2025
Fulton County shrank by 780 people (−2.3%) between April 2020 and July 2025: 1,153 more deaths than births and a net gain of 384 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 33,562 |
| 2021 | 33,367 |
| 2022 | 33,156 |
| 2023 | 32,872 |
| 2024 | 32,807 |
| 2025 | 32,901 |
Neighboring counties
- Mason County southeast · 12,411 people
- McDonough County west · 25,916 people
- Knox County north · 47,767 people
- Peoria County northeast · 178,553 people
- Schuyler County southwest · 6,657 people
- Tazewell County east · 130,049 people
- Warren County northwest · 16,222 people
Printable Fulton 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) (116 KB)
- PNG (2400 px) (95 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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