Shelby County, Ohio
County seat: Sidney · Population 48,065 (2025) · 408 sq mi
Shelby County is the 50th most populous of Ohio's 88 counties, with 48,065 people (2025 estimate). Its county seat is Sidney. The map shows its 10 cities and towns and the 6 neighboring counties.
Shelby County facts
- County seat
- Sidney
- Population (2025 estimate)
- 48,065 −0.4% since 2020
- Land area
- 408 sq mi 68th largest of 88
- Water area
- 3 sq mi
- Population density
- 118 per sq mi
- Established
- 1819
- Named after
- Isaac Shelby American politician (1750-1826)
- Largest city
- Sidney 20,124
- Median household income
- $73,978
- Cities and towns
- 10 plus 1 CDPs
- ZIP codes
- 18
- Time zone
- Eastern
- FIPS code
- 39149
Cities and towns in Shelby County
Shelby County has 10 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 |
|---|---|---|---|
| Sidney (county seat) | City | 20,124 | |
| Fort Loramie | Village | 1,736 | |
| Anna | Village | 1,566 | |
| Jackson Center | Village | 1,446 | |
| Botkins | Village | 1,133 | |
| Russia | Village | 811 | |
| Port Jefferson | Village | 338 | |
| Kettlersville | Village | 176 | |
| Lockington | Village | 164 | |
| Minster | Village | 0 | Auglaize County |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Newport | 96 |
ZIP codes in Shelby County
18 ZIP codes reach into Shelby County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 45302
- 45306 also Auglaize County
- 45317 also Champaign and Miami counties
- 45333
- 45334 also Auglaize and Logan counties
- 45336
- 45340
- 45353
- 45356 also Miami County
- 45360
- 45363
- 45365 also Champaign County
- 45380 also Darke County
- 45388 also Darke and Mercer counties
- 45845 also Auglaize and Mercer counties
- 45865 also Auglaize and Mercer counties
- 45869 also Auglaize and Mercer counties
- 45871 also Auglaize County
Population of Shelby County, 2020–2025
Shelby County shrank by 169 people (−0.4%) between April 2020 and July 2025: 352 more births than deaths and a net loss of 532 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 48,158 |
| 2021 | 48,035 |
| 2022 | 47,690 |
| 2023 | 47,786 |
| 2024 | 47,952 |
| 2025 | 48,065 |
Neighboring counties
- Auglaize County north · 45,909 people
- Miami County south · 112,634 people
- Logan County east · 46,302 people
- Darke County southwest · 51,520 people
- Champaign County southeast · 38,820 people
- Mercer County northwest · 42,737 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) (94 KB)
- PNG (2400 px) (69 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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