Lehigh County, Pennsylvania Cities (2026)

26 cities

City
Rank
2026 Pop. ↓
2020 Pop.
Annual Change
Density
Area (mi²)
Type
Allentown1127,841125,7310.28%7,27918 City
Bethlehem281,32675,7061.17%4,25519 City
Lower Macungie334,12432,4221.3%1,52522 Township
Upper Macungie430,45026,4731.95%1,16726 Township
Whitehall530,27829,1601.04%2,40813 Township
Bethlehem627,38125,8791.22%1,89814 Township
South Whitehall722,29821,0681.09%1,30617 Township
Upper Saucon819,13916,9812.42%78224 Township
North Whitehall916,42315,6331.13%58528 Township
Whitehall1014,49915,035-0.61%4,3613 Borough
Emmaus1112,65111,6401.35%4,3703 Borough
Upper Milford128,5427,8241.41%47618 Township
Catasauqua136,6816,5120.42%5,1711 Borough
Weisenberg145,2404,9741.22%19627 Township
Fountain Hill154,9084,8240.29%6,6781 Borough
Lynn164,4404,2341.19%10841 Township
Slatington174,3564,2810.3%3,2981 Borough
Lower Milford183,9913,8580.99%20320 Township
Coplay193,6623,3411.5%6,0031 Borough
Heidelberg203,4843,3261.19%14125 Township
Macungie213,3753,2540.6%3,4131 Borough
North Catasauqua223,2042,9691.23%4,4621 Borough
Freemansburg233,0252,8690.87%4,3401 Borough
Alburtis242,6422,5910.34%3,7371 Borough
Coopersburg252,5712,4600.74%2,7561 Borough
Lowhill262,4162,2881.17%17214 Township

Lehigh County Cities Summary

Largest City

Allentown is the largest city in Lehigh County, with a population of 127,841.

Smallest City

Lowhill is the smallest city in Lehigh County, with a population of 2,416.

10 Largest Cities

There are 26 cities in Lehigh County, Pennsylvania.

Location of Lehigh County