List of county seats in Pennsylvania (by population)

The following is a list of the sixty-seven county seats of the Commonwealth of Pennsylvania. The list includes forty-two boroughs, twenty-four cities, and one town. The ranking is based on the populations of each county seat during the 2010 census.

Rank	Seat name	Population (2010 census)	County	Municipal type
1	Philadelphia	1,526,006	Philadelphia	City
2	Pittsburgh	305,704	Allegheny	City
3	Allentown	118,032	Lehigh	City
4	Erie	101,786	Erie	City
5	Reading	88,082	Berks	City
6	Scranton	76,089	Lackawanna	City
7	Lancaster	59,322	Lancaster	City
8	Harrisburg	49,528	Dauphin	City
9	York	43,718	York	City
10	Wilkes-Barre	41,498	Luzerne	City
11	Norristown	34,324	Montgomery	Borough
12	Williamsport	29,381	Lycoming	City
13	Easton	26,800	Northampton	City
14	Lebanon	25,477	Lebanon	City
15	New Castle	23,273	Lawrence	City
16	Chambersburg	20,268	Franklin	Borough
17	Carlisle	18,682	Cumberland	Borough
18	West Chester	18,461	Chester	Borough
19	Greensburg	14,892	Westmoreland	City
20	Bloomsburg	14,855	Columbia	Town
21	Pottsville	14,324	Schuylkill	City
22	Indiana	13,975	Indiana	Borough
23	Butler	13,757	Butler	City
24	Washington	13,663	Washington	City
25	Meadville	13,388	Crawford	City
26	Uniontown	10,372	Fayette	City
27	Sunbury	9,905	Northumberland	City
28	Lock Haven	9,772	Clinton	City
29	Warren	9,710	Warren	City
30	Doylestown	8,380	Bucks	Borough
31	Lewistown	8,338	Mifflin	Borough
32	Gettysburg	7,620	Adams	Borough
33	Huntingdon	7,093	Huntingdon	Borough
34	Stroudsburg	6,674	Monroe	Borough
35	Franklin	6,545	Venango	City
36	Somerset	6,277	Somerset	Borough
37	Clearfield	6,215	Clearfield	Borough
38	Bellefonte	6,187	Centre	Borough
39	Lewisburg	5,792	Union	Borough
40	Hollidaysburg	5,791	Blair	Borough
41	Media	5,327	Delaware	Borough
42	Clarion	5,276	Clarion	Borough
43	Jim Thorpe	4,781	Carbon	Borough
44	Danville	4,699	Montour	Borough
45	Beaver	4,531	Beaver	Borough
46	Honesdale	4,480	Wayne	Borough
47	Waynesburg	4,176	Greene	Borough
48	Ridgway	4,078	Elk	Borough
49	Kittanning	4,044	Armstrong	Borough
50	Brookville	3,924	Jefferson	Borough
51	Ebensburg	3,351	Cambria	Borough
52	Wellsboro	3,263	Tioga	Borough
53	Towanda	2,919	Bradford	Borough
54	Bedford	2,841	Bedford	Borough
55	Coudersport	2,546	Potter	Borough
56	Emporium	2,073	Cameron	Borough
57	Mercer	2,002	Mercer	Borough
58	Tunkhannock	1,836	Wyoming	Borough
59	Smethport	1,655	McKean	Borough
60	Montrose	1,617	Susquehanna	Borough
61	Middleburg	1,309	Snyder	Borough
62	New Bloomfield	1,247	Perry	Borough
63	McConnellsburg	1,220	Fulton	Borough
64	Milford	1,021	Pike	Borough
65	Mifflintown	936	Juniata	Borough
66	Tionesta	483	Forest	Borough
67	Laporte	316	Sullivan	Borough