Morrow County, Ohio
County seat: Mount Gilead · Population 36,305 (2025) · 406 sq mi
Morrow County is the 68th most populous of Ohio's 88 counties, with 36,305 people (2025 estimate). Its county seat is Mount Gilead. The map shows its 8 cities and towns and the 5 neighboring counties.
Morrow County facts
- County seat
- Mount Gilead
- Population (2025 estimate)
- 36,305 +3.9% since 2020
- Land area
- 406 sq mi 72nd largest of 88
- Water area
- 1 sq mi
- Population density
- 89 per sq mi
- Established
- 1848
- Named after
- Jeremiah Morrow American politician (1771-1852)
- Largest city
- Mount Gilead 3,575
- Median household income
- $75,283
- Cities and towns
- 8 plus 3 CDPs
- ZIP codes
- 18
- Time zone
- Eastern
- FIPS code
- 39117
Cities and towns in Morrow County
Morrow County has 8 incorporated cities, towns and villages. Populations count the people living inside Morrow County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Mount Gilead (county seat) | Village | 3,575 | |
| Cardington | Village | 2,247 | |
| Edison | Village | 449 | |
| Marengo | Village | 285 | |
| Fulton | Village | 254 | |
| Chesterville | Village | 208 | |
| Sparta | Village | 127 | |
| Galion | City | 0 | Crawford and Richland counties |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Candlewood Lake | 1,053 | |
| Iberia | 499 | |
| Hidden Lakes | 0 |
ZIP codes in Morrow County
18 ZIP codes reach into Morrow County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 43003 also Delaware County
- 43011 also Knox, Licking and Delaware counties
- 43019 also Knox and Richland counties
- 43050 also Knox County
- 43314 also Marion and Crawford counties
- 43315 also Marion County
- 43317
- 43320
- 43321
- 43325
- 43334 also Delaware County
- 43338
- 43350
- 43356 also Marion and Delaware counties
- 44813 also Richland and Knox counties
- 44833 also Crawford, Richland and Marion counties
- 44903 also Richland and Ashland counties
- 44904 also Richland County
Population of Morrow County, 2020–2025
Morrow County grew by 1,350 people (+3.9%) between April 2020 and July 2025: 26 more births than deaths and a net gain of 1,319 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 34,996 |
| 2021 | 35,227 |
| 2022 | 35,311 |
| 2023 | 35,614 |
| 2024 | 36,008 |
| 2025 | 36,305 |
Neighboring counties
- Marion County west · 65,115 people
- Knox County southeast · 64,002 people
- Delaware County southwest · 242,032 people
- Richland County northeast · 124,893 people
- Crawford County north · 41,896 people
Printable Morrow 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) (92 KB)
- PNG (2400 px) (75 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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