Ranking of Delaware, PA Cities and Places By population in 2020
Updated on June 27, 2025.
Based on the US Census Vintage data estimates, in 2020, among all Delaware, PA cities and places, Balance of Delaware County had the highest population (403.53K), followed by Chester city (32.70K), and Yeadon borough (12.03K).
The chart below shows the top 10 cities and places, and the table below shows the ranking of all Delaware cities and places.
You can see similar information for other Pennsylvania counties. You can also see the ranking of all cities and places in Pennsylvania.
Data Source: US Census Bureau (Vintage).
Ranking of Delaware, PA Cities and Places By population in 2020
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| Rank | City or Place | Population |
|---|---|---|
| 1 | Balance of Delaware County | 403528 |
| 2 | Chester city | 32695 |
| 3 | Yeadon borough | 12034 |
| 4 | Lansdowne borough | 11084 |
| 5 | Darby borough | 10699 |
| 6 | Collingdale borough | 8893 |
| 7 | Brookhaven borough | 8295 |
| 8 | Ridley Park borough | 7261 |
| 9 | Glenolden borough | 7224 |
| 10 | Clifton Heights borough | 6843 |
| 11 | Folcroft borough | 6792 |
| 12 | Swarthmore borough | 6528 |
| 13 | Prospect Park borough | 6419 |
| 14 | Sharon Hill borough | 6009 |
| 15 | Norwood borough | 5936 |
| 16 | Media borough | 5880 |
| 17 | Aldan borough | 4254 |
| 18 | Upland borough | 3059 |
| 19 | Chester Heights borough | 2918 |
| 20 | Morton borough | 2768 |
| 21 | East Lansdowne borough | 2710 |
| 22 | Colwyn borough | 2471 |
| 23 | Eddystone borough | 2455 |
| 23 | Marcus Hook borough | 2455 |
| 24 | Parkside borough | 2324 |
| 25 | Trainer borough | 1978 |
| 26 | Millbourne borough | 1211 |
| 27 | Rose Valley borough | 1015 |
| 28 | Rutledge borough | 785 |