ZIP CodesZIP codes in Harford County, Maryland
Harford County, Maryland has 21 ZIP codes in this list, from 21001 to 21161. They cover 20 places, among them Bel Air, Aberdeen, Aberdeen Proving Ground and Abingdon.
Nothing in this county matches.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 21001 | Aberdeen | 30.0 | 39.511, -76.180 |
| 21005 | Aberdeen Proving Ground | 33.4 | 39.477, -76.121 |
| 21009 | Abingdon | 11.4 | 39.474, -76.300 |
| 21010 | Gunpowder | 7.3 | 39.398, -76.274 |
| 21014 | Bel Air | 13.9 | 39.539, -76.356 |
| 21015 | Bel Air | 31.2 | 39.530, -76.315 |
| 21017 | Belcamp | 2.7 | 39.476, -76.242 |
| 21018 | Benson | no area | 39.509, -76.385 |
| 21028 | Churchville | 12.9 | 39.565, -76.249 |
| 21034 | Darlington | 26.7 | 39.654, -76.228 |
| 21040 | Edgewood | 9.8 | 39.428, -76.305 |
| 21047 | Fallston | 22.5 | 39.527, -76.433 |
| 21050 | Forest Hill | 29.0 | 39.575, -76.401 |
| 21078 | Havre De Grace | 30.1 | 39.552, -76.117 |
| 21084 | Jarrettsville | 23.8 | 39.616, -76.468 |
| 21085 | Joppa | 19.0 | 39.424, -76.354 |
| 21130 | Perryman | 0.5 | 39.472, -76.212 |
| 21132 | Pylesville | 22.4 | 39.696, -76.411 |
| 21154 | Street | 39.3 | 39.657, -76.371 |
| 21160 | Whiteford | 15.5 | 39.708, -76.316 |
| 21161 | White Hall | 48.5 | 39.662, -76.567 |
The ZIP code areas of Harford County add up to about 430 square miles of land (1,113 sq km) as the Census Bureau draws them. The largest is 21161 (White Hall), with 48.5 square miles.
Places with more than one code here: Bel Air (2 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Aberdeen, MD 21001.
- 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.