15 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 21921 | Elkton | 45,527 |
| 21901 | North East | 19,514 |
| 21911 | Rising Sun | 10,551 |
| 21904 | Port Deposit | 6,233 |
| 21903 | Perryville | 5,692 |
| 21918 | Conowingo | 4,169 |
| 21919 | Earleville | 3,626 |
| 21915 | Chesapeake City | 2,471 |
| 21917 | Colora | 2,233 |
| 21912 | Warwick | 1,536 |
| 21920 | Elk Mills | 1,413 |
| 21913 | Cecilton | 820 |
| 21914 | Charlestown | 810 |
| 21902 | Perry Point | 340 |
| 21930 | Georgetown | 25 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 15 ZCTAs in Cecil County, Maryland (US Census).