Juniata County, Pennsylvania
County seat: Mifflintown · Population 23,403 (2025) · 391 sq mi
Juniata County is the 61st most populous of Pennsylvania's 67 counties, with 23,403 people (2025 estimate). Its county seat is Mifflintown. It is part of the District 2 region, one of the 11 PennDOT engineering districts. The map shows its 4 cities and towns and the 7 neighboring counties.
Juniata County facts
- County seat
- Mifflintown
- Population (2025 estimate)
- 23,403 −0.4% since 2020
- Land area
- 391 sq mi 57th largest of 67
- Water area
- 2 sq mi
- Population density
- 60 per sq mi
- Established
- 1831
- Named after
- Juniata River river in Pennsylvania, United States
- Largest city
- Fayette 3,337
- Median household income
- $66,318
- Cities and towns
- 4 plus 5 CDPs
- ZIP codes
- 15
- Time zone
- Eastern
- FIPS code
- 42067
Cities and towns in Juniata County
Juniata County has 4 incorporated cities, towns and villages. Populations count the people living inside Juniata County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Mifflintown (county seat) | Borough | 819 | |
| Port Royal | Borough | 797 | |
| Thompsontown | Borough | 628 | |
| Mifflin | Borough | 515 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| McAlisterville | 929 | |
| Mexico | 470 | |
| Richfield | 320 | Snyder County |
| East Waterford | 116 | |
| East Salem | 115 |
ZIP codes in Juniata County
15 ZIP codes reach into Juniata County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 17014
- 17021 also Perry, Franklin and Huntingdon counties
- 17035 also Perry County
- 17045 also Perry and Snyder counties
- 17049
- 17056
- 17058
- 17059
- 17062 also Perry County
- 17076
- 17082
- 17086 also Snyder County
- 17094
- 17243 also Huntingdon County
- 17853 also Snyder County
Population of Juniata County, 2020–2025
Juniata County shrank by 97 people (−0.4%) between April 2020 and July 2025: 52 more deaths than births and a net loss of 41 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 23,476 |
| 2021 | 23,346 |
| 2022 | 23,296 |
| 2023 | 23,409 |
| 2024 | 23,454 |
| 2025 | 23,403 |
Neighboring counties
- Perry County southeast · 46,806 people
- Mifflin County west · 46,127 people
- Snyder County northeast · 39,655 people
- Huntingdon County west · 43,001 people
- Franklin County south · 160,652 people
- Northumberland County northeast · 89,920 people
- Dauphin County east · 293,351 people
Printable Juniata 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) (112 KB)
- PNG (2400 px) (96 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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