PENNSYLVANIA COUNTIES (ALPHABETICALLY) ADAMS - January 22, 1800, formed of a part of York. ALLEGHENY - September 24, 1788, formed of parts of Westmoreland and Washington. ARMSTRONG - March 12, 1800, formed of parts of Allegheny, Westmoreland, and Lycoming. BEAVER - March 12, 1800, formed of parts of Allegheny and Washington. BEDFORD - March 9, 1771, formed of a part of Cumberland. BERKS - March 11, 1752, formed of parts of Philadelphia, Chester, and Lancaster. BLAIR - February 26, 1846, formed of parts of Huntingdon and Bedford. BRADFORD - February 21, 1810, formed of parts Luzerne and Lycoming. (Previous to March 24, 1812, this county was called Ontario.) BUCKS - 1682, one of the three original counties of the Province of Pennsylvania. BUTLER - March 12, 1800, formed of a part of Allegheny. CAMBRIA - March 26, 1804, formed of parts of Huntingdon, Somerset, and Bedford. CAMERON - March 29, 1860, formed of parts of Clinton, Elk, McKean and Potter. CARBON - March 13, 1843, formed of parts of Northampton and Monroe. CENTRE - February 13, 1800, formed of parts of Mifflin, Northumberland, Lycoming, and Huntingdon. CHESTER - 1682, one of the three original counties of the Province of Pennsylvania. CLARION - March 11, 1839, formed of parts of Venango and Armstrong. CLEARFIELD - March 26, 1804, formed of parts of Northumberland, Huntingdon, and Lycoming. CLINTON - June 21, 1839, formed of parts of Lycoming and Centre. COLUMBIA - March 22, 1813, formed of a part of Northumberland. CRAWFORD - March 12, 1800, formed of a part of Allegheny. CUMBERLAND - January 27, 1750, formed of a part of Lancaster. DAUPHIN - March 4, 1785, formed of a part of Lancaster. DELAWARE - September 26, 1789, formed of a part of Chester. ELK - April 18, 1843, formed of parts of Jefferson, Clearfield, and McKean. ERIE - March 12, 1800, formed of a part of Allegheny. FAYETTE - September 26, 1783, formed of a part of Westmoreland. FOREST - April 11, 1848, formed of parts of Jefferson and Venango. (Part of Venango added by act approved October 31, 1866) FRANKLIN - September 9, 1784, formed of a part of Cumberland. FULTON - April 19, 1850, formed of a part of Bedford. GREENE - February 9, 1796, formed of a part of Washington. HUNTINGDON- September 20, 1787, formed of a part of Bedford. INDIANA - March 30, 1803, formed of parts of Westmoreland and Lycoming. JEFFERSON - March 26, 1804, formed of a part of Lycoming. JUNIATA - March 2, 1831, formed of a part of Mifflin. LACKAWANNA - August 21, 1878, formed of a part of Luzerne. LANCASTER - May 10, 1729, formed of a part of Chester. LAWRENCE - March 20, 1819, formed of parts of Beaver and Mercer. LEBANON - February 16, 1813, formed of parts of Dauphin and Lancaster. LEHIGH - March 6, 1812, formed of a part of Northampton. LUZERNE - September 25, 1786, formed of a part of Northumberland. LYCOMING - April 13, 1795, formed of a part of Northumberland. McKEAN - March 26, 1804, formed of a part of Lycoming. MERCER - March 12, 1800, formed of a part of Allegheny. MIFFLIN - September 19, 1789, formed of parts of Cumberland and Northumberland. MONROE - April 1, 1836, formed of parts of Northampton and Pike. MONTGOMERY - September 10, 1784, formed of a part of Philadelphia. MONTOUR - May 3, 1850, formed of a part of Columbia. NORTHAMPTON - March 11, 1752, formed of a part of Bucks. NORTHUMBERLAND - March 21, 1772, formed of parts of Lancaster, Cumberland, Berks, Bedford, and Northampton. PERRY - March 22, 1820, formed of a part of Cumberland. PHILADELPHIA - 1682, one of the three original counties of the Province of Pennsylvania. PIKE - March 26, 1814, formed of a part of Wayne. POTTER - March 26, 1804, formed of a part of Lycoming. SCHUYLKILL - March 1, 1811, formed of parts of Berks and Northampton. SNYDER - March 2, 1855, formed of a part of Union. SOMERSET - April 17, 1795, formed of a part of Bedford. SULLIVAN - March 15, 1847, formed of a part of Lycoming. SUSQUEHANNA - February 21, 1810, formed of a part of Luzerne. TIOGA - March 26, 1804, formed of a part of Lycoming. UNION - March 22, 1813, formed of a part of Northumberland. VENANGO - March 12, 1800, formed of parts of Allegheny and Lycoming. WARREN - March 12, 1800, formed of parts of Allegheny and Lycoming. WAYNE - March 21, 1798, formed of a part of Northampton. WASHINGTON - March 28, 1781, formed of a part of Westmoreland. WESTMORELAND - February 26, 1773, formed of a part of Bedford, and in 1785 part of the purchase of 1784 was added. WYOMING - April 4, 1812, formed of a part of Luzerne. YORK - August 19, 1749, formed of a part of Lancaster. NetZero Platinum No Banner Ads and Unlimited Access Sign Up Today - Only $9.95 per month! http://www.netzero.net