| County |
County Seat |
Zip Code |
Date Created |
Parent County |
|---|
| Adams |
Gettysburg |
17325 |
22 Jan 1800 |
York |
| Allegheny |
Pittsburgh |
15219 |
24 Sept 1788 |
Westmoreland, Washington |
| Armstrong |
Kittanning |
16201 |
12 Mar 1800 |
Allegheny, Lycoming, Westmoreland |
| Beaver |
Beaver |
15009 |
12 Mar 1800 |
Allegheny, Washington |
| Bedford |
Bedford |
15522 |
09 Mar 1771 |
Cumberland |
| Berks |
Reading |
19601 |
11 Mar 1752 |
Lancaster, Chester, Philadelphia |
| Blair |
Hollidaysburg |
16648 |
26 Feb 1846 |
Huntingdon, Bedford |
| Bradford |
Towanda |
18848 |
21 Feb 1810 |
Luzerne, Lycoming |
| Bucks |
Doylestown |
18901 |
-- Nov 1682 |
Original County |
| Butler |
Butler |
16001 |
12 Mar 1800 |
Allegheny |
| Cambria |
Ebensburg |
15931 |
26 Mar 1804 |
Huntingdon, Somerset, Bedford |
| Cameron |
Emporium |
15834 |
29 Mar 1860 |
Clinton, McKean, Elk, Potter |
| Carbon |
Jim Thorpe |
18229 |
13 Mar 1843 |
Northampton, Monroe |
| Centre |
Bellefonte |
16823 |
13 Feb 1800 |
Huntingdon, Lycoming, Mifflin, Northumberland |
| Chester |
West Chester |
19380 |
-- Nov 1682 |
Original County |
| Clarion |
Clarion |
16214 |
11 Mar 1839 |
Venango, Armstrong |
| Clearfield |
Clearfield |
16830 |
26 Mar 1804 |
Huntingdon, Lycoming |
| Clinton |
Lock Haven |
17745 |
21 Jun 1839 |
Centre, Lycoming |
| Columbia |
Bloomsburg |
17815 |
22 Mar 1813 |
Northumberland |
| Crawford |
Meadville |
16335 |
12 Mar 1800 |
Allegheny |
| Cumberland |
Carlisle |
17013 |
27 Jan 1750 |
Lancaster |
| Dauphin |
Harrisburg |
17101 |
04 Mar 1785 |
Lancaster |
| Delaware |
Media |
19063 |
26 Sep 1789 |
Chester |
| Elk |
Ridgway |
15853 |
18 Apr 1843 |
Jefferson, McKean, Clearfield |
| Erie |
Erie |
16501 |
12 Mar 1800 |
Allegheny |
| Fayette |
Uniontown |
15401 |
26 Sep 1783 |
Westmoreland |
| Forest |
Tionesta |
16353 |
11 Apr 1848
31 Oct 1866 |
Jefferson
Venango |
| Franklin |
Chambersburg |
17201 |
09 Sep 1784 |
Cumberland |
| Fulton |
McConnellsburg |
17233 |
19 Apr 1850 |
Bedford |
| Greene |
Waynesburg |
15370 |
09 Feb 1796 |
Washington |
| Huntingdon |
Huntingdon |
16652 |
20 Sep 1787 |
Bedford |
| Indiana |
Indiana |
15701 |
30 Mar 1803 |
Westmoreland, Lycoming |
| Jefferson |
Brookville |
15825 |
26 Mar 1804 |
Lycoming |
| Juniata |
Mifflintown |
17059 |
02 Mar 1831 |
Mifflin |
| Lackawanna |
Scranton |
18503 |
13 Aug 1878 |
Luzerne |
| Lancaster |
Lancaster |
17608 |
10 May 1729 |
Chester |
| Lawrence |
New Castle |
16101 |
20 Mar 1849 |
Beaver, Mercer |
| Lebanon |
Lebanon |
17042 |
16 Feb 1813 |
Dauphin, Lancaster |
| Lehigh |
Allentown |
18101 |
06 Mar 1812 |
Northampton |
| Luzerne |
Wilkes-Barre |
18702 |
25 Sept 1786 |
Northumberland |
| Lycoming |
Williamsport |
17701 |
13 Apr 1795 |
Northumberland |
| McKean |
Smethport |
16749 |
26 Mar 1804 |
Lycoming |
| Mercer |
Mercer |
16137 |
12 Mar 1800 |
Allegheny |
| Mifflin |
Lewistown |
17044 |
19 Sep 1789 |
Cumberland, Northumberland |
| Monroe |
Stroudsburg |
18360 |
01 Apr 1836 |
Northampton, Pike |
| Montgomery |
Norristown |
19404 |
10 Sept 1784 |
Philadelphia |
| Montour |
Danville |
17821 |
03 May 1850 |
Columbia |
| Northampton |
Easton |
18042 |
11 Mar 1752 |
Bucks |
| Northumberland |
Sunbury |
17801 |
21 Mar 1772 |
Cumberland, Northampton, Lancaster, Berks, Bedford |
| Ontario |
Renamed Bradford County 24 March 1812 |
21 Feb 1810 |
Luzerne, Lycoming |
| Perry |
New Bloomfield |
17068 |
22 Mar 1820 |
Cumberland |
| Philadelphia |
Philadelphia |
19107 |
-- Nov 1682 |
Original County |
| Pike |
Milford |
18337 |
26 Mar 1814 |
Wayne |
| Potter |
Coudersport |
16915 |
26 Mar 1804 |
Lycoming |
| Schuylkill |
Pottsville |
17901 |
01 Mar 1811 |
Berks, Northampton |
| Snyder |
Middleburg |
17842 |
02 Mar 1855 |
Union |
| Somerset |
Somerset |
15501 |
17 Apr 1795 |
Bedford |
| Sullivan |
LaPorte |
18526 |
15 Mar 1847 |
Lycoming |
| Susquehanna |
Montrose |
18801 |
21 Feb 1810 |
Luzerne |
| Tioga |
Wellsboro |
16091 |
26 Mar 1804 |
Lycoming |
| Union |
Lewisburg |
17837 |
22 Mar 1813 |
Northumberland |
| Venango |
Franklin |
16323 |
12 Mar 1800 |
Allegheny, Lycoming |
| Warren |
Warren |
16365 |
12 Mar 1800 |
Allegheny, Lycoming |
| Washington |
Washington |
15301 |
28 Mar 1781 |
Westmoreland |
| Wayne |
Honesdale |
18431 |
21 Mar 1798 |
Northampton |
| Westmoreland |
Greensburg |
15601 |
26 Feb 1773 |
Bedford |
| Wyoming |
Tunkhannock |
18657 |
04 Apr 1842 |
Luzerne |
| York |
York |
17401 |
19 Aug 1749 |
Lancaster |