Pennsylvania Demographics Site Map

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Browse Pennsylvania Zip Codes

• Zip Codes by Population

Largest 10 Counties by Population

1. Philadelphia County
2. Allegheny County
3. Montgomery County
4. Bucks County
5. Delaware County
6. Lancaster County
7. Chester County
8. York County
9. Berks County
10. Lehigh County

Largest 10 Cities by Population

1. Philadelphia
2. Pittsburgh
3. Allentown
4. Reading city
5. Erie
6. Upper Darby
7. Scranton
8. Lower Merion
9. Bensalem
10. Abington

Largest 10 Zip Codes by Population

1. 19124
2. 19120
3. 17603
4. 19111
5. 19143
6. 19446
7. 19149
8. 19020
9. 19134
10. 17601

20 Richest Counties in Pennsylvania

1. Chester County
2. Montgomery County
3. Bucks County
4. Delaware County
5. Northampton County
6. Butler County
7. Cumberland County
8. Lancaster County
9. Lehigh County
10. Allegheny County
11. Montour County
12. Washington County
13. Union County
14. Pike County
15. York County
16. Berks County
17. Monroe County
18. Centre County
19. Adams County
20. Dauphin County

20 Richest Cities in Pennsylvania

1. Fox Chapel
2. Sewickley Heights
3. Rose Valley
4. Edgeworth
5. Upper Makefield
6. West Pikeland
7. Birmingham township
8. Lower Merion
9. Easttown
10. Thornburg
11. Charlestown
12. Summit township
13. Durham
14. Buckingham township
15. Pocopson
16. New Hope
17. Newlin
18. Ben Avon Heights
19. West Vincent
20. Radnor