Highland County, Ohio
County seat: Hillsboro · Population 43,823 (2025) · 553 sq mi
Highland County is the 56th most populous of Ohio's 88 counties, with 43,823 people (2025 estimate). Its county seat is Hillsboro. The map shows its 8 cities and towns and the 6 neighboring counties.
Highland County facts
- County seat
- Hillsboro
- Population (2025 estimate)
- 43,823 +1.2% since 2020
- Land area
- 553 sq mi 15th largest of 88
- Water area
- 5 sq mi
- Population density
- 79 per sq mi
- Established
- 1805
- Largest city
- Hillsboro 6,763
- Median household income
- $65,785
- Cities and towns
- 8 plus 3 CDPs
- ZIP codes
- 15
- Time zone
- Eastern
- FIPS code
- 39071
Cities and towns in Highland County
Highland County has 8 incorporated cities, towns and villages. Populations count the people living inside Highland County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Hillsboro (county seat) | City | 6,763 | |
| Greenfield | Village | 4,329 | Ross County |
| Lynchburg | Village | 1,537 | Clinton County |
| Leesburg | Village | 1,280 | |
| Mowrystown | Village | 387 | |
| Highland | Village | 229 | |
| Sinking Spring | Village | 120 | |
| Sardinia | Village | 0 | Brown County |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Highland Holiday | 976 | |
| Rocky Fork Point | 818 | |
| Buford | 455 |
ZIP codes in Highland County
15 ZIP codes reach into Highland County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 45118 also Brown and Clermont counties
- 45123 also Ross and Fayette counties
- 45132
- 45133 also Pike and Brown counties
- 45135 also Fayette and Clinton counties
- 45142 also Clinton and Brown counties
- 45154 also Brown County
- 45155
- 45159 also Clinton County
- 45171 also Brown County
- 45172
- 45612 also Ross and Pike counties
- 45660 also Adams, Pike and Scioto counties
- 45679 also Adams County
- 45697 also Adams and Brown counties
Population of Highland County, 2020–2025
Highland County grew by 506 people (+1.2%) between April 2020 and July 2025: 356 more deaths than births and a net gain of 851 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 43,363 |
| 2021 | 43,440 |
| 2022 | 43,352 |
| 2023 | 43,532 |
| 2024 | 43,704 |
| 2025 | 43,823 |
Neighboring counties
- Brown County southwest · 44,397 people
- Clinton County northwest · 42,301 people
- Ross County east · 76,429 people
- Adams County south · 27,865 people
- Fayette County north · 28,552 people
- Pike County east · 27,061 people
Printable Highland 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) (99 KB)
- PNG (2400 px) (79 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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