Pennsylvania County Maps
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Pennsylvania has 67 counties, a population of more than 13 million people, about 1,833 zip codes and 593 public school districts. Those counties vary widely in population, school enrollment, zip code coverage and local boundary structure. Philadelphia County has the largest population in the state, while Cameron County has the smallest. Browse the map, population, zip codes, school districts, townships and county list sections below to explore further. Or, simply start typing in the box below to go directly to that county.
Interactive Pennsylvania County Map
This Pennsylvania county map preview highlights population-by-county context, ZIP code coverage, school districts, and local boundary structure. Full statewide and county-level data packages are available when you need complete downloadable datasets. Click or tap any county to view its maps, trends and data.
Start with a free preview, or go straight to the full Pennsylvania dataset .
Pennsylvania Population By County
Pennsylvania's population was over 13 million in 2020, up 300,311 (2.36%) residents from 2010. Philadelphia County had the largest population in the state with more than 2 million people. Allegheny and Montgomery Counties also stand out as major population centers. Cameron County was the least populated area in Pennsylvania with only 4,547 residents. The table below compares Pennsylvania county populations and recent population trends.
The Most Populated Counties In Pennsylvania
| County | Population | Trend (2010-2020) |
|---|---|---|
| Philadelphia County | 1,603,797 | ▴ 5.10% |
| Allegheny County | 1,250,578 | ▴ 2.23% |
| Montgomery County | 856,553 | ▴ 7.08% |
| Bucks County | 646,538 | ▴ 3.40% |
| Delaware County | 576,830 | ▴ 3.19% |
| Download all county population data | ||
County populations reflect the latest state serving context (2020).
Pennsylvania County Map With ZIP Codes
Pennsylvania has about 1,833 zip codes statewide. Allegheny County contains the most zip codes, with 103. County-level zip code maps give a faster and clearer way to understand local coverage as zip boundaries can span county and municipal lines. The maps below highlight a few Pennsylvania counties.
Pennsylvania School Districts By County
Pennsylvania has 593 public school districts with 1,701,807 students enrolled as of 2024. Allegheny County stands out for both district count and total enrollment. Philadelphia County posted the largest recent enrollment gain. The table below compares county level school district totals and recent enrollment trends across the state.
Largest School Districts in Pennsylvania
| County | Districts | Enrollment | Trend |
|---|---|---|---|
| Allegheny County | 44 | 133,287 | ▴ 0.09% |
| Montgomery County | 23 | 113,080 | ▾ 0.69% |
| Berks County | 19 | 67,527 | ▾ 0.58% |
| Westmoreland County | 19 | 44,220 | ▾ 1.37% |
| Delaware County | 17 | 84,904 | ▾ 0.81% |
| Download all school district data | |||
School district enrollment and trend values reflect the most recent state-level context (2024).
Pennsylvania County Map With Townships
Pennsylvania has about 2,572 townships and related county subdivisions statewide. This added local detail helps show how counties are divided into smaller areas. The previews below highlight a few Pennsylvania counties with township map coverage.
Get the Full Pennsylvania Data Package
The sections above provide a preview of Pennsylvania county maps and county-level data. The full package includes complete statewide coverage with ready-to-use files for mapping, planning, and analysis.
Everything is organized to save hours of data collection, cleanup, and integration work.
- County map exports and boundary coverage for every county in Pennsylvania
- Statewide GIS layers for ZIP codes, subdivisions, school districts, roads, water, and political boundaries
- Population, demographics, school, housing, and trend context aligned across counties
- Database files, map-ready exports, and documentation designed for faster research workflows
Includes GIS layers, maps, demographics, analytics, database files and planning tools.