There are 42 cities in Northampton County, Pennsylvania.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Population | 2020 Population | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Allentown | 1 | 124,597 | 125,727 | -0.23% | 7,094 | 17.6 | City |
| Bethlehem | 2 | 79,167 | 75,699 | 1.11% | 4,142 | 19.1 | City |
| Easton | 3 | 30,022 | 28,084 | 1.64% | 7,042 | 4.3 | City |
| Bethlehem township | 4 | 26,488 | 25,882 | 0.57% | 1,836 | 14.4 | Township |
| Palmer township | 5 | 22,347 | 22,290 | -0.19% | 2,178 | 10.3 | Township |
| Forks township | 6 | 16,599 | 16,126 | 0.87% | 1,374 | 12.1 | Township |
| Hanover township | 7 | 11,602 | 11,766 | -0.23% | 1,770 | 6.6 | Township |
| Lower Saucon township | 8 | 11,016 | 11,080 | -0.05% | 454 | 24.3 | Township |
| Lehigh township | 9 | 10,750 | 10,763 | 0.1% | 366 | 29.3 | Township |
| Northampton | 10 | 10,414 | 10,373 | 0.1% | 4,214 | 2.5 | Borough |
| Moore township | 11 | 9,366 | 9,324 | 0.15% | 252 | 37.2 | Township |
| Bushkill township | 12 | 8,676 | 8,493 | 0.31% | 348 | 24.9 | Township |
| Upper Nazareth township | 13 | 8,497 | 8,146 | 1.06% | 1,162 | 7.3 | Township |
| Wilson | 14 | 8,099 | 8,242 | -0.44% | 7,012 | 1.2 | Borough |
| Lower Nazareth township | 15 | 7,112 | 6,930 | -0.28% | 528 | 13.5 | Township |
| Williams township | 16 | 6,624 | 6,569 | 0.62% | 365 | 18.2 | Township |
| Catasauqua | 17 | 6,454 | 6,512 | -0.23% | 4,995 | 1.3 | Borough |
| Upper Mount Bethel township | 18 | 6,406 | 6,443 | 0.14% | 151 | 42.5 | Township |
| Plainfield township | 19 | 6,220 | 6,243 | -0.02% | 251 | 24.7 | Township |
| Hellertown | 20 | 6,115 | 6,122 | -0.03% | 4,661 | 1.3 | Borough |
| Nazareth | 21 | 6,067 | 6,041 | 0.1% | 3,828 | 1.6 | Borough |
| Allen township | 22 | 5,451 | 5,468 | 0% | 503 | 10.8 | Township |
| East Allen township | 23 | 5,392 | 5,014 | 1.56% | 371 | 14.6 | Township |
| Washington township | 24 | 5,153 | 5,145 | 0.04% | 289 | 17.8 | Township |
| Bangor | 25 | 5,108 | 5,186 | -0.39% | 3,424 | 1.5 | Borough |
| Fountain Hill | 26 | 4,789 | 4,824 | -0.19% | 6,516 | 0.7 | Borough |
| Wind Gap | 27 | 3,862 | 2,817 | 7.25% | 2,884 | 1.3 | Borough |
| Pen Argyl | 28 | 3,446 | 3,509 | -0.46% | 2,568 | 1.3 | Borough |
| North Catasauqua | 29 | 3,030 | 2,970 | 0.5% | 4,220 | 0.7 | Borough |
| Freemansburg | 30 | 2,902 | 2,869 | 0.28% | 4,164 | 0.7 | Borough |
| Lower Mount Bethel township | 31 | 2,898 | 2,913 | -0.03% | 122 | 23.8 | Township |
| Bath | 32 | 2,896 | 2,828 | 0.59% | 3,207 | 0.9 | Borough |
| Walnutport | 33 | 2,090 | 2,073 | 0.19% | 2,779 | 0.8 | Borough |
| Roseto | 34 | 1,552 | 1,579 | -0.45% | 2,467 | 0.6 | Borough |
| Tatamy | 35 | 1,472 | 1,210 | 4.62% | 2,652 | 0.6 | Borough |
| West Easton | 36 | 1,242 | 1,237 | 0.08% | 4,072 | 0.3 | Borough |
| East Bangor | 37 | 1,102 | 1,120 | -0.45% | 1,326 | 0.8 | Borough |
| Stockertown | 38 | 911 | 917 | -0.22% | 939 | 1.0 | Borough |
| Riegelsville | 39 | 838 | 849 | -0.36% | 832 | 1.0 | Borough |
| Portland | 40 | 479 | 486 | -0.42% | 992 | 0.5 | Borough |
| Glendon | 41 | 366 | 372 | -0.54% | 595 | 0.6 | Borough |
| Chapman | 42 | 219 | 221 | -0.46% | 664 | 0.3 | Borough |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Allentown is the largest city in Northampton County.
Chapman is the smallest city in Northampton County.
There are 42 cities in Northampton County, Pennsylvania.