ZIP CodesZIP codes in Caroline County, Maryland
Caroline County, Maryland has 11 ZIP codes in this list, from 21609 to 21670. They cover 11 places, among them Bethlehem, Denton, Federalsburg and Goldsboro.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 21609 | Bethlehem | no area | 38.741, -75.959 |
| 21629 | Denton | 83.6 | 38.859, -75.836 |
| 21632 | Federalsburg | 77.8 | 38.715, -75.775 |
| 21636 | Goldsboro | 23.5 | 39.023, -75.793 |
| 21639 | Greensboro | 33.1 | 38.962, -75.806 |
| 21640 | Henderson | 25.7 | 39.067, -75.795 |
| 21641 | Hillsboro | 0.1 | 38.921, -75.939 |
| 21649 | Marydel | 21.0 | 39.108, -75.762 |
| 21655 | Preston | 52.7 | 38.746, -75.916 |
| 21660 | Ridgely | 32.7 | 38.957, -75.885 |
| 21670 | Templeville | no area | 39.136, -75.766 |
The ZIP code areas of Caroline County add up to about 350 square miles of land (907 sq km) as the Census Bureau draws them. The largest is 21629 (Denton), with 83.6 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Bethlehem, MD 21609.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.