Lehigh County, Pennsylvania Cities (2025)

26 cities

City
Rank
2025 Pop. ↓
2020 Pop.
Annual Change
Density
Area (mi²)
Type
Allentown1127,489125,7310.28%7,25918 City
Bethlehem280,38975,7061.18%4,20619 City
Lower Macungie333,68532,4221.32%1,50522 Township
Whitehall429,96729,1601.05%2,38413 Township
Upper Macungie529,86726,4731.99%1,14526 Township
Bethlehem627,05225,8791.23%1,87514 Township
South Whitehall722,05821,0681.1%1,29217 Township
Upper Saucon818,68616,9812.48%76424 Township
North Whitehall916,24015,6331.14%57828 Township
Whitehall1014,58815,035-0.61%4,3873 Borough
Emmaus1112,48211,6401.36%4,3123 Borough
Upper Milford128,4237,8241.43%46918 Township
Catasauqua136,6536,5120.42%5,1491 Borough
Weisenberg145,1774,9741.23%19327 Township
Fountain Hill154,8944,8240.29%6,6591 Borough
Lynn164,3884,2341.2%10641 Township
Slatington174,3434,2810.28%3,2881 Borough
Lower Milford183,9523,8581%20120 Township
Coplay193,6083,3411.49%5,9151 Borough
Heidelberg203,4433,3261.21%14025 Township
Macungie213,3553,2540.6%3,3921 Borough
North Catasauqua223,1652,9691.25%4,4081 Borough
Freemansburg232,9992,8690.87%4,3031 Borough
Alburtis242,6332,5910.3%3,7241 Borough
Coopersburg252,5522,4600.71%2,7351 Borough
Lowhill262,3882,2881.19%17014 Township

Lehigh County Cities Summary

Largest City

Allentown is the largest city in Lehigh County, with a population of 127,489.

Smallest City

Lowhill is the smallest city in Lehigh County, with a population of 2,388.

10 Largest Cities

There are 26 cities in Lehigh County, Pennsylvania.

Location of Lehigh County