There are 56 cities in Delaware 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 | State | 2024 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Philadelphia | 1 | Pennsylvania | 1,533,828 | 1,600,684 | -1.08% | 11,416 | 134.36 |
| Chester | 2 | Pennsylvania | 33,933 | 32,580 | 1.01% | 7,021 | 4.83 |
| Drexel Hill | 3 | Pennsylvania | 30,537 | 27,925 | 2.19% | 9,549 | 3.20 |
| King Prussia | 4 | Pennsylvania | 25,587 | 22,028 | 2.33% | 3,012 | 8.49 |
| West Chester | 5 | Pennsylvania | 19,988 | 18,667 | 1.68% | 10,828 | 1.85 |
| Ardmore | 6 | Pennsylvania | 14,583 | 13,567 | 1.77% | 7,418 | 1.97 |
| Yeadon | 7 | Pennsylvania | 12,318 | 12,034 | 0.58% | 7,723 | 1.59 |
| Lansdowne | 8 | Pennsylvania | 11,070 | 11,096 | -0.06% | 9,373 | 1.18 |
| Broomall | 9 | Pennsylvania | 10,718 | 10,608 | 0.26% | 3,383 | 3.17 |
| Darby | 10 | Pennsylvania | 10,585 | 10,700 | -0.27% | 12,571 | 0.84 |
| Woodlyn | 11 | Pennsylvania | 10,377 | 9,732 | 0.14% | 6,199 | 1.67 |
| Villanova | 12 | Pennsylvania | 8,968 | 7,194 | 5.21% | 4,295 | 2.09 |
| Collingdale | 13 | Pennsylvania | 8,813 | 8,892 | -0.23% | 10,142 | 0.87 |
| Village Green-Green Ridge | 14 | Pennsylvania | 8,643 | 8,661 | -0.05% | 4,516 | 1.91 |
| Folsom | 15 | Pennsylvania | 8,364 | 8,706 | -1.01% | 6,691 | 1.25 |
| Brookhaven | 16 | Pennsylvania | 8,291 | 8,291 | 0% | 4,854 | 1.71 |
| Wayne | 17 | Pennsylvania | 7,285 | 6,891 | 1.38% | 3,430 | 2.12 |
| Ridley Park | 18 | Pennsylvania | 7,199 | 7,265 | -0.24% | 6,672 | 1.08 |
| Glenolden | 19 | Pennsylvania | 7,150 | 7,220 | -0.25% | 7,333 | 0.97 |
| Clifton Heights | 20 | Pennsylvania | 6,777 | 6,851 | -0.28% | 10,757 | 0.63 |
| Folcroft | 21 | Pennsylvania | 6,716 | 6,790 | -0.28% | 5,394 | 1.25 |
| Swarthmore | 22 | Pennsylvania | 6,534 | 6,540 | -0.03% | 4,667 | 1.40 |
| Prospect Park | 23 | Pennsylvania | 6,357 | 6,425 | -0.27% | 8,684 | 0.73 |
| Sharon Hill | 24 | Pennsylvania | 5,942 | 6,006 | -0.27% | 7,697 | 0.77 |
| Penn Wynne | 25 | Pennsylvania | 5,929 | 5,769 | -1.64% | 5,578 | 1.06 |
| Norwood | 26 | Pennsylvania | 5,874 | 5,937 | -0.27% | 7,550 | 0.78 |
| Media | 27 | Pennsylvania | 5,852 | 5,890 | -0.17% | 7,670 | 0.76 |
| Boothwyn | 28 | Pennsylvania | 5,487 | 5,525 | -0.16% | 4,400 | 1.25 |
| Bryn Mawr | 29 | Pennsylvania | 5,405 | 5,611 | -0.94% | 5,648 | 0.96 |
| Chesterbrook | 30 | Pennsylvania | 5,370 | 5,080 | -0.54% | 3,447 | 1.56 |
| Narberth | 31 | Pennsylvania | 4,487 | 4,491 | -0.02% | 8,920 | 0.50 |
| Aldan | 32 | Pennsylvania | 4,198 | 4,245 | -0.29% | 7,032 | 0.60 |
| Rosemont | 33 | Pennsylvania | 4,129 | 3,593 | 3.35% | 5,029 | 0.82 |
| Berwyn | 34 | Pennsylvania | 3,779 | 3,621 | 1.07% | 2,031 | 1.86 |
| St. Davids | 35 | Pennsylvania | 3,742 | 3,530 | 1.38% | 2,424 | 1.54 |
| Lima | 36 | Pennsylvania | 3,237 | 2,051 | 10.1% | 2,202 | 1.47 |
| Linwood | 37 | Pennsylvania | 3,101 | 3,473 | -2.91% | 4,771 | 0.65 |
| Upland | 38 | Pennsylvania | 3,027 | 3,061 | -0.3% | 4,664 | 0.65 |
| Chester Heights | 39 | Pennsylvania | 2,917 | 2,921 | -0.03% | 1,318 | 2.21 |
| Morton | 40 | Pennsylvania | 2,750 | 2,774 | -0.22% | 7,682 | 0.36 |
| East Lansdowne | 41 | Pennsylvania | 2,679 | 2,710 | -0.3% | 13,005 | 0.21 |
| Colwyn | 42 | Pennsylvania | 2,441 | 2,469 | -0.29% | 9,461 | 0.26 |
| Eddystone | 43 | Pennsylvania | 2,428 | 2,456 | -0.29% | 2,440 | 0.99 |
| Marcus Hook | 44 | Pennsylvania | 2,425 | 2,452 | -0.29% | 2,189 | 1.11 |
| Parkside | 45 | Pennsylvania | 2,297 | 2,321 | -0.26% | 11,150 | 0.21 |
| Trainer | 46 | Pennsylvania | 1,954 | 1,978 | -0.31% | 1,849 | 1.06 |
| Devon | 47 | Pennsylvania | 1,950 | 1,830 | 1.56% | 3,181 | 0.61 |
| Haverford College | 48 | Pennsylvania | 1,683 | 1,243 | 6.99% | 5,536 | 0.30 |
| Millbourne | 49 | Pennsylvania | 1,198 | 1,213 | -0.33% | 16,189 | 0.07 |
| Chadds Ford | 50 | Pennsylvania | 1,077 | 1,523 | -9.34% | 480 | 2.25 |
| Dilworthtown | 51 | Pennsylvania | 1,028 | 910 | 3.01% | 1,619 | 0.64 |
| Rose Valley | 52 | Pennsylvania | 1,009 | 1,019 | -0.3% | 1,378 | 0.73 |
| Rutledge | 53 | Pennsylvania | 776 | 783 | -0.26% | 5,427 | 0.14 |
| Marshallton | 54 | Pennsylvania | 764 | 430 | 12.35% | 1,679 | 0.46 |
| Cheyney University | 55 | Pennsylvania | 192 | 194 | 11.63% | 719 | 0.27 |
| Hamorton | 56 | Pennsylvania | 114 | 189 | -2.56% | 1,027 | 0.11 |
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.
Philadelphia is the largest city in Delaware County.
Hamorton is the smallest city in Delaware County.
There are 56 cities in Delaware County, Pennsylvania.