Pennsylvania County Map With Cities
By Marko Visic · Updated Oct 5, 2026
Pennsylvania has 67 counties, covering 44,742 square miles of land. The Census Bureau estimates its population at 13,059,432 as of July 1, 2025. The largest county by land area is Lycoming County; the most populous is Philadelphia County; the least populous is Cameron County.
Tap or click any county for details. Need a printable version? Blank Pennsylvania map (PDF/PNG/SVG).
All 67 Pennsylvania counties
| County | FIPS code | Population (July 1, 2025) ▼ | Change since April 2020 | Land area (sq mi) | People per sq mi | Median household income (2020–2024) |
|---|---|---|---|---|---|---|
| Philadelphia County | 42101 | 1,574,281 | -1.8% | 134 | 11,720 | $61,953 |
| Allegheny County | 42003 | 1,225,035 | -2.0% | 730 | 1,678 | $78,548 |
| Montgomery County | 42091 | 877,643 | +2.5% | 483 | 1,817 | $113,915 |
| Bucks County | 42017 | 647,828 | +0.2% | 604 | 1,072 | $114,764 |
| Delaware County | 42045 | 580,937 | +0.7% | 184 | 3,161 | $89,546 |
| Lancaster County | 42071 | 563,159 | +1.8% | 944 | 597 | $86,959 |
| Chester County | 42029 | 557,116 | +4.2% | 751 | 742 | $127,208 |
| York County | 42133 | 473,197 | +3.7% | 904 | 523 | $84,829 |
| Berks County | 42011 | 440,072 | +2.6% | 856 | 514 | $79,777 |
| Lehigh County | 42077 | 384,383 | +2.6% | 345 | 1,113 | $80,079 |
| Westmoreland County | 42129 | 349,324 | -1.5% | 1,028 | 340 | $74,109 |
| Luzerne County | 42079 | 332,126 | +2.0% | 890 | 373 | $63,691 |
| Northampton County | 42095 | 324,411 | +3.7% | 370 | 877 | $89,184 |
| Dauphin County | 42043 | 293,351 | +2.4% | 525 | 559 | $76,242 |
| Cumberland County | 42041 | 277,270 | +6.9% | 545 | 508 | $87,494 |
| Erie County | 42049 | 265,832 | -1.9% | 799 | 333 | $63,354 |
| Lackawanna County | 42069 | 216,502 | +0.3% | 459 | 472 | $66,223 |
| Washington County | 42125 | 210,802 | +0.7% | 857 | 246 | $78,958 |
| Butler County | 42019 | 200,169 | +3.3% | 789 | 254 | $89,843 |
| Monroe County | 42089 | 167,179 | -0.7% | 608 | 275 | $83,565 |
| Beaver County | 42007 | 166,032 | -1.3% | 435 | 382 | $71,089 |
| Franklin County | 42055 | 160,652 | +3.0% | 772 | 208 | $77,003 |
| Centre County | 42027 | 157,393 | -0.5% | 1,107 | 142 | $74,291 |
| Lebanon County | 42075 | 146,380 | +2.2% | 362 | 405 | $78,425 |
| Schuylkill County | 42107 | 145,085 | +1.4% | 779 | 186 | $68,313 |
| Cambria County | 42021 | 128,968 | -3.4% | 688 | 187 | $58,418 |
| Fayette County | 42051 | 123,021 | -4.5% | 791 | 156 | $58,236 |
| Blair County | 42013 | 119,541 | -2.7% | 525 | 228 | $62,382 |
| Lycoming County | 42081 | 112,587 | -1.4% | 1,229 | 92 | $63,917 |
| Mercer County | 42085 | 107,860 | -2.5% | 673 | 160 | $59,976 |
| Adams County | 42001 | 107,594 | +3.6% | 519 | 207 | $84,092 |
| Northumberland County | 42097 | 89,920 | -1.9% | 458 | 196 | $60,583 |
| Lawrence County | 42073 | 83,911 | -2.5% | 357 | 235 | $61,931 |
| Indiana County | 42063 | 82,878 | -0.4% | 827 | 100 | $60,208 |
| Crawford County | 42039 | 81,792 | -2.6% | 1,012 | 81 | $60,476 |
| Clearfield County | 42033 | 78,100 | -3.1% | 1,145 | 68 | $62,152 |
| Somerset County | 42111 | 72,004 | -2.9% | 1,075 | 67 | $61,446 |
| Columbia County | 42037 | 66,193 | +2.3% | 483 | 137 | $64,644 |
| Carbon County | 42025 | 65,868 | +1.7% | 381 | 173 | $67,554 |
| Armstrong County | 42005 | 63,698 | -2.9% | 653 | 97 | $65,008 |
| Pike County | 42103 | 62,808 | +7.3% | 545 | 115 | $81,323 |
| Bradford County | 42015 | 59,600 | -0.6% | 1,147 | 52 | $63,675 |
| Wayne County | 42127 | 51,703 | +1.1% | 726 | 71 | $62,381 |
| Venango County | 42121 | 49,346 | -2.2% | 674 | 73 | $61,522 |
| Bedford County | 42009 | 47,480 | -0.2% | 1,012 | 47 | $59,992 |
| Perry County | 42099 | 46,806 | +2.1% | 551 | 85 | $79,444 |
| Mifflin County | 42087 | 46,127 | 0.0% | 411 | 112 | $63,953 |
| Jefferson County | 42065 | 43,255 | -2.8% | 652 | 66 | $58,686 |
| Huntingdon County | 42061 | 43,001 | -2.4% | 875 | 49 | $65,557 |
| Union County | 42119 | 42,313 | -0.9% | 316 | 134 | $76,404 |
| Tioga County | 42117 | 40,502 | -1.3% | 1,134 | 36 | $64,899 |
| Snyder County | 42109 | 39,655 | -0.2% | 329 | 121 | $66,876 |
| McKean County | 42083 | 38,984 | -3.6% | 980 | 40 | $62,905 |
| Susquehanna County | 42115 | 38,237 | -0.5% | 823 | 46 | $68,487 |
| Clinton County | 42035 | 37,870 | +1.1% | 890 | 43 | $60,816 |
| Warren County | 42123 | 37,038 | -4.0% | 884 | 42 | $60,480 |
| Clarion County | 42031 | 36,680 | -1.5% | 601 | 61 | $62,649 |
| Greene County | 42059 | 33,885 | -5.7% | 576 | 59 | $68,041 |
| Elk County | 42047 | 29,926 | -3.4% | 827 | 36 | $66,380 |
| Wyoming County | 42131 | 25,790 | -1.1% | 397 | 65 | $72,460 |
| Juniata County | 42067 | 23,403 | -0.4% | 391 | 60 | $66,318 |
| Montour County | 42093 | 17,868 | -1.5% | 130 | 137 | $76,976 |
| Potter County | 42105 | 15,897 | -3.1% | 1,081 | 15 | $59,020 |
| Fulton County | 42057 | 14,483 | -0.5% | 438 | 33 | $65,836 |
| Forest County | 42053 | 6,614 | -5.3% | 427 | 15 | $52,191 |
| Sullivan County | 42113 | 5,856 | +0.4% | 450 | 13 | $69,764 |
| Cameron County | 42023 | 4,211 | -7.3% | 396 | 11 | $50,573 |
FIPS code: the Census Bureau’s five-digit county ID, a two-digit state code plus a three-digit county code. It is not a ZIP code.
How many counties does Pennsylvania have?
Pennsylvania has 67 counties covering 44,742 square miles. The state was admitted to the Union in 1787 as the 2nd state.
The largest county by land area is Lycoming County at 1,229 square miles, home to 112,587 residents. The most populous is Philadelphia County with 1,574,281 residents — a density of 11,720 people per square mile. At the other end of the scale, Cameron County has 4,211 residents.
Pennsylvania’s capital is Harrisburg, while the largest city is Philadelphia.
Related resources
Download a printable outline of Pennsylvania’s county boundaries from our blank map of Pennsylvania page — available in SVG, PNG, and PDF.
Use the What County Am I In? tool to detect which Pennsylvania county a GPS location or address falls in, or the Address to County Lookup for batch input.
For demographic radius analysis, the Find ZIP Codes in Radius and Population Within Radius tools let you draw a circle around any Pennsylvania address and see every ZIP code and the total population inside.
Two SimpleMapLab studies cover Pennsylvania specifically: the 100-mile radius around Harrisburg measures how much of the state lives within 100 miles of its capitol, and the loneliest town in Pennsylvania ranks the state’s most isolated inhabited place. The county-counts blog post puts Pennsylvania’s 67 counties in national context.
Frequently asked questions
- County Population Totals, Vintage 2025: estimates for July 1, 2025, released March 2026
- Gazetteer Files, 2026: county land and water area
- American Community Survey 5-Year Estimates, 2020–2024: median household income (table B19013)
- County boundaries on the map: US Atlas TopoJSON build of the US Census Bureau’s TIGER/Line shapefiles. All figures are US Census Bureau data in the public domain.