Richland County, Ohio
County seat: Mansfield · Population 124,893 (2025) · 495 sq mi
Richland County is the 23rd most populous of Ohio's 88 counties, with 124,893 people (2025 estimate). Its county seat is Mansfield. The map shows its 11 cities and towns and the 5 neighboring counties.
Richland County facts
- County seat
- Mansfield
- Population (2025 estimate)
- 124,893 −0% since 2020
- Land area
- 495 sq mi 26th largest of 88
- Water area
- 5 sq mi
- Population density
- 252 per sq mi
- Established
- 1808
- Largest city
- Mansfield 47,381
- Median household income
- $59,509
- Cities and towns
- 11 plus 2 CDPs
- ZIP codes
- 19
- Time zone
- Eastern
- FIPS code
- 39139
Cities and towns in Richland County
Richland County has 11 incorporated cities, towns and villages. Populations count the people living inside Richland County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Mansfield (county seat) | City | 47,381 | |
| Shelby | City | 9,231 | |
| Ontario | City | 6,692 | |
| Lexington | Village | 4,848 | |
| Bellville | Village | 2,013 | |
| Butler | Village | 929 | |
| Plymouth | Village | 906 | Huron County |
| Shiloh | Village | 615 | |
| Lucas | Village | 586 | |
| Crestline | Village | 19 | Crawford County |
| Galion | City | 0 | Crawford and Morrow counties |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Roseland | 1,827 | |
| Lincoln Heights | 685 |
ZIP codes in Richland County
19 ZIP codes reach into Richland County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 43019 also Knox and Morrow counties
- 44805 also Ashland County
- 44813 also Morrow and Knox counties
- 44822 also Knox County
- 44827 also Crawford County
- 44833 also Morrow, Crawford and Marion counties
- 44837 also Huron and Ashland counties
- 44843 also Ashland County
- 44864 also Ashland County
- 44865 also Huron and Crawford counties
- 44875 also Crawford County
- 44878 also Huron and Ashland counties
- 44901
- 44902
- 44903 also Morrow and Ashland counties
- 44904 also Morrow County
- 44905
- 44906
- 44907
Population of Richland County, 2020–2025
Richland County shrank by 33 people (−0%) between April 2020 and July 2025: 1,553 more deaths than births and a net gain of 1,505 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 124,969 |
| 2021 | 125,297 |
| 2022 | 125,076 |
| 2023 | 124,863 |
| 2024 | 124,957 |
| 2025 | 124,893 |
Neighboring counties
- Ashland County east · 52,523 people
- Crawford County west · 41,896 people
- Morrow County southwest · 36,305 people
- Huron County north · 58,250 people
- Knox County south · 64,002 people
Printable Richland 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) (87 KB)
- PNG (2400 px) (71 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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