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Where am ILOCATED

Harford County, Maryland

Harford County, Maryland, has 266,446 residents (July 2025 estimate). Its county seat is Bel Air. It uses Eastern Time and covers 437 sq mi (1,132 km²) of land.

BaltimoreColumbia
Harford County in Maryland
Baltimore CountyCecil CountyBel Air SouthBel Air NorthEdgewood
Harford County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
266,446
Land area
437 sq mi (1,132 km²)
County seat or government
Bel Air
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$112,265 ± $2,167
Median home value
$386,400 ± $5,089
Median rent, with utilities
$1,586 ± $40
Homes lived in by their owners
79.7% ± 1.1 points
County type
County
Metro or micro area
Baltimore-Columbia-Towson, MD metro areaOutlying county
Water area
89.5 sq mi (232 km²)
State
Maryland
County code (FIPS)
24025
Coordinates (central point)
39.537429, -76.299789
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Harford County

Time zoneLocal time and UTC offsetNext clock change
Eastern TimeAmerica/New_YorkUTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 2101438,707 people
  2. 2100933,679 people
  3. 2101530,013 people
  4. 2100127,168 people
  5. 2104024,960 people
  6. 2107820,030 people
  7. 2105017,466 people
  8. 2108517,307 people
  9. 2104713,852 people
  10. 210847,070 people
  11. 210176,648 people
  12. 211546,544 people
All 24
  1. 210135,610 people
  2. 210875,537 people
  3. 211615,221 people
  4. 211114,714 people
  5. 211323,160 people
  6. 210283,103 people
  7. 210342,846 people
  8. 211602,441 people
  9. 210052,202 people
  10. 21082626 people
  11. 21010239 people
  12. 21130112 people

24 ZIP Code areas overlap Harford County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Election districts in Harford County, largest first

  1. District 1, Abingdon95,314 people
  2. District 3, Bel Air88,516 people
  3. District 2, Halls Cross Roads29,463 people
  4. District 4, Marshall21,461 people
  5. District 6, Havre de Grace16,677 people
  6. District 5, Dublin12,326 people

People counts are American Community Survey 2020–2024 5-year estimates. All election districts in Maryland, by county

School districts in Harford County, largest first

  1. Harford County Public Schools263,757 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Bel Air South, Maryland (CDP)58,137 people
  2. Bel Air North, Maryland (CDP)31,302 people
  3. Edgewood, Maryland (CDP)24,922 people
  4. Aberdeen, Maryland (city)17,298 people
  5. Havre de Grace, Maryland (city)14,994 people
  6. Joppatowne, Maryland (CDP)14,237 people
  7. Bel Air, Maryland (town)10,585 people
  8. Fallston, Maryland (CDP)10,013 people
  9. Riverside, Maryland (CDP)6,585 people
  10. Abingdon, Maryland (CDP)5,019 people
  11. Pleasant Hills, Maryland (CDP)3,836 people
  12. Jarrettsville, Maryland (CDP)2,560 people
All 16
  1. Aberdeen Proving Ground, Maryland (CDP)2,193 people
  2. Perryman, Maryland (CDP)2,174 people
  3. Pylesville, Maryland (CDP)933 people
  4. Darlington, Maryland (CDP)353 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Baltimore County, Maryland18 mi west
  2. Cecil County, Maryland19 mi east
  3. Kent County, Maryland22 mi southeast
  4. Lancaster County, Pennsylvania35 mi north
  5. York County, Pennsylvania35 mi northwest

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 where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.