Harford County, Maryland
Harford County is a county in Maryland. Its county FIPS code is 24025. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 24025
- Representative coordinates
- 39.537429, -76.299789
- County type
- County
- County seat or government
- Bel Air
- Resident population, July 2025
- 266,446
- Land area
- 1,132.149 km²
- Water area
- 231.888 km²
- State
- Maryland
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Harford County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
21001 · 21005 · 21009 · 21010 · 21013 · 21014 · 21015 · 21017 · 21028 · 21034 · 21040 · 21047 · 21050 · 21078 · 21082 · 21084 · 21085 · 21087 · 21111 · 21130 · 21132 · 21154 · 21160 · 21161
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Aberdeen city, MD
- Aberdeen Proving Ground CDP, MD
- Abingdon CDP, MD
- Bel Air town, MD
- Bel Air North CDP, MD
- Bel Air South CDP, MD
- Darlington CDP, MD
- Edgewood CDP, MD
- Fallston CDP, MD
- Havre de Grace city, MD
- Jarrettsville CDP, MD
- Joppatowne CDP, MD
- Perryman CDP, MD
- Pleasant Hills CDP, MD
- Pylesville CDP, MD
- Riverside CDP, MD
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.