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Northeast county atlas

Pennsylvania county map

Explore all 67 counties. Select a county to see its map, or download a copy for your next project.

2025 Census boundaries67 mapped unitsCapital: Harrisburg
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Boundary map 100%
Labelled map of Pennsylvania counties Adams CountyAllegheny CountyArmstrong CountyBeaver CountyBedford CountyBerks CountyBlair CountyBradford CountyBucks CountyButler CountyCambria CountyCameron CountyCarbon CountyCentre CountyChester CountyClarion CountyClearfield CountyClinton CountyColumbia CountyCrawford CountyCumberland CountyDauphin CountyDelaware CountyElk CountyErie CountyFayette CountyForest CountyFranklin CountyFulton CountyGreene CountyHuntingdon CountyIndiana CountyJefferson CountyJuniata CountyLackawanna CountyLancaster CountyLawrence CountyLebanon CountyLehigh CountyLuzerne CountyLycoming CountyMcKean CountyMercer CountyMifflin CountyMonroe CountyMontgomery CountyMontour CountyNorthampton CountyNorthumberland CountyPerry CountyPhiladelphia CountyPike CountyPotter CountySchuylkill CountySnyder CountySomerset CountySullivan CountySusquehanna CountyTioga CountyUnion CountyVenango CountyWarren CountyWashington CountyWayne CountyWestmoreland CountyWyoming CountyYork County
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2025 U.S. Census boundaries. Zoom to reveal more names. Drag to pan when zoomed; use arrow keys, + and − with the map focused.

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SVG

SVG is editable vector artwork. PNG is a high-resolution image. PDF uses landscape Letter pages, with a separate key when needed.

Downloads contain the complete boundary map, independent of zoom. Crowded names use a numbered key. Numbered quiz maps use the county list / answer key (CSV). Boundary data (GeoJSON) · Reuse with source credit.

Roads, terrain & aerial imagery

Explore Pennsylvania with a county boundary overlay. Choose a view to load the interactive map.

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Street names, terrain, or aerial photography with the county boundary in view.

Backgrounds load from OpenStreetMap or USGS only when selected. Imagery dates and detail vary by location.

Map scope: Use the boundary map for names and shapes, or the interactive background viewer for roads, terrain, and aerial imagery. County boundaries do not identify parcels or ZIP codes.

Pennsylvania county geography overview

Pennsylvania has 67 counties, which places it 20th among the 50 state and District of Columbia maps in this atlas when ordered by number of county-level units. Their combined 44,742.6 square miles of land place the state 32nd by mapped land area.

The average county-level area is 668 square miles, while the median is 653.3 square miles. The median is often the better description of a typical unit because one or two very large areas can pull the average upward. The five largest units together account for about 13% of the state’s mapped land area.

67county-level units
653.3 sq mimedian land area
1,228.9 sq milargest unit
3%share of mapped area that is water

Largest and smallest Pennsylvania counties

Lycoming County is the largest county-level unit by land area at 1,228.9 square miles. It represents about 3% of all mapped land in Pennsylvania. At the other end of the range, Montour County has 130.3 square miles of land.

Largest by land area

  1. Lycoming County1,228.9 sq mi
  2. Bradford County1,147.4 sq mi
  3. Clearfield County1,145.1 sq mi
  4. Tioga County1,133.9 sq mi
  5. Centre County1,107.3 sq mi

Smallest by land area

  1. Montour County130.3 sq mi
  2. Philadelphia County134.3 sq mi
  3. Delaware County183.8 sq mi
  4. Union County316 sq mi
  5. Snyder County328.8 sq mi

Rankings use land area rather than total area. This avoids making coastal or lake counties appear larger solely because their boundaries include extensive water.

Alphabetical list of Pennsylvania counties

The table is alphabetical, so it works as a name and FIPS-code reference rather than an area ranking. Every identifier begins with the Pennsylvania state FIPS prefix 42. Land and water figures are rounded to one decimal place.

67 county-level areas

Download county data / numbered map key (CSV)
No.NameFIPS codeLand areaWater area
1Adams County42001518.6 sq mi3.1 sq mi
2Allegheny County42003730 sq mi14.3 sq mi
3Armstrong County42005653.3 sq mi10.7 sq mi
4Beaver County42007434.7 sq mi9.3 sq mi
5Bedford County420091,012 sq mi4.6 sq mi
6Berks County42011856.4 sq mi9.4 sq mi
7Blair County42013525.1 sq mi1.3 sq mi
8Bradford County420151,147.4 sq mi13.6 sq mi
9Bucks County42017604.4 sq mi17.5 sq mi
10Butler County42019789.5 sq mi6.2 sq mi
11Cambria County42021688 sq mi5.3 sq mi
12Cameron County42023396.2 sq mi2.2 sq mi
13Carbon County42025381.4 sq mi6.1 sq mi
14Centre County420271,107.3 sq mi4.4 sq mi
15Chester County42029750.6 sq mi8.6 sq mi
16Clarion County42031600.8 sq mi9 sq mi
17Clearfield County420331,145.1 sq mi9.3 sq mi
18Clinton County42035889.6 sq mi9 sq mi
19Columbia County42037483.3 sq mi7.2 sq mi
20Crawford County420391,012.4 sq mi25.2 sq mi
21Cumberland County42041545.5 sq mi4.9 sq mi
22Dauphin County42043524.9 sq mi33.2 sq mi
23Delaware County42045183.8 sq mi6.8 sq mi
24Elk County42047826.9 sq mi4.9 sq mi
25Erie County42049798.9 sq mi759.2 sq mi
26Fayette County42051790.8 sq mi8 sq mi
27Forest County42053427.3 sq mi3.2 sq mi
28Franklin County42055772.3 sq mi0.6 sq mi
29Fulton County42057437.6 sq mi0.5 sq mi
30Greene County42059575.9 sq mi2 sq mi
31Huntingdon County42061874.6 sq mi14.6 sq mi
32Indiana County42063827.4 sq mi7 sq mi
33Jefferson County42065652.4 sq mi4.4 sq mi
34Juniata County42067391.4 sq mi2.1 sq mi
35Lackawanna County42069458.9 sq mi6.1 sq mi
36Lancaster County42071943.9 sq mi39.9 sq mi
37Lawrence County42073357.4 sq mi4.4 sq mi
38Lebanon County42075361.8 sq mi0.7 sq mi
39Lehigh County42077345.3 sq mi2.9 sq mi
40Luzerne County42079889.8 sq mi16.2 sq mi
41Lycoming County420811,228.9 sq mi15 sq mi
42McKean County42083979.7 sq mi5 sq mi
43Mercer County42085672.5 sq mi10 sq mi
44Mifflin County42087411 sq mi3.7 sq mi
45Monroe County42089608.4 sq mi8.8 sq mi
46Montgomery County42091482.9 sq mi4.2 sq mi
47Montour County42093130.3 sq mi2 sq mi
48Northampton County42095369.8 sq mi7.4 sq mi
49Northumberland County42097457.7 sq mi19.6 sq mi
50Perry County42099551.4 sq mi4.1 sq mi
51Philadelphia County42101134.3 sq mi8.1 sq mi
52Pike County42103544.9 sq mi21.9 sq mi
53Potter County421051,081.2 sq mi0.2 sq mi
54Schuylkill County42107778.8 sq mi4 sq mi
55Snyder County42109328.8 sq mi2.8 sq mi
56Somerset County421111,075 sq mi6.6 sq mi
57Sullivan County42113449.9 sq mi2.6 sq mi
58Susquehanna County42115823.5 sq mi8.6 sq mi
59Tioga County421171,133.9 sq mi3.2 sq mi
60Union County42119316 sq mi1.8 sq mi
61Venango County42121674.3 sq mi8.6 sq mi
62Warren County42123884.3 sq mi14.4 sq mi
63Washington County42125857 sq mi3.8 sq mi
64Wayne County42127725.8 sq mi25 sq mi
65Westmoreland County421291,027.7 sq mi8.2 sq mi
66Wyoming County42131397.3 sq mi7.7 sq mi
67York County42133904.4 sq mi6.4 sq mi

How to read and use this map

County lines are administrative boundaries, not postal routes. A mailing address can use a city name associated with a neighboring area, and ZIP codes can cross county lines. When you need to identify a county for an address, confirm it with an official geocoder or local government source.

For classroom or planning use, download a PDF from the controls above. Labelled exports use numbered callouts for crowded areas; numbered quiz maps match the alphabetical county list. SVG files keep the boundary lines sharp at larger paper sizes.

Frequently asked questions

How many counties are in Pennsylvania?

Pennsylvania has 67 counties in the U.S. Census Bureau’s 2025 cartographic boundary file.

Can I print this Pennsylvania county map?

Yes. Choose Download / print and select PDF for a landscape Letter page, PNG for an image, or SVG for editable vector artwork. Because the map is SVG, its boundary lines stay sharp when scaled.

What is the largest county in Pennsylvania?

Lycoming County is the largest by land area in this dataset at 1,228.9 square miles. This is an area ranking, not a population ranking.

What is the smallest county in Pennsylvania?

Montour County is the smallest by land area in this dataset at 130.3 square miles.

Are these legal survey boundaries?

No. This is a generalized reference map. Property, parcel, election, and legal boundary questions should be checked with the relevant state or local agency.

Map source

U.S. Census Bureau, 2025 Cartographic Boundary File, Counties, 1:5,000,000. Land and water area fields are supplied in the same file and converted from square meters to square miles. Accessed September 27, 2026.