Harford County, Maryland

Harford County population, land area and income

Harford County had 265,514 residents in the Census Vintage 2024 estimate, on 437.1 square miles of land. It ranks 8th of 24 in Maryland by population and 11th by land area. That works out to 607.4 people per square mile, 6.3 times the US average of 96.3, and in the top tenth nationally.

The median county-equivalent in Maryland has 111,399 residents, so Harford County is 2.4 times that size.

Its SAIPE 2023 median household income of $104,553 is in the top tenth among 3,143 counties with an estimate.

How Harford County's population changed since 2020

Harford County gained 4,269 residents between the July 2020 and July 2024 estimates, a rise of 1.6%. That ranks 18th of 24 in Maryland for growth. The median Maryland county changed by +2.1%, and the state as a whole by +1.4%.

Since the April 2020 estimates base, Harford County recorded 11,088 births and 10,821 deaths, a natural change of +267. Net international migration added +920 and net domestic migration, people moving to or from other US counties, came to +3,434. The largest single component was domestic migration, which added 3,434 people.

Where Harford County is

The Census internal point of Harford County is at 39.537400, -76.299800. It sits in UTM zone 18N. The map shades Maryland's 24 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Harford County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Harford County

3 incorporated places of 1,000+ people have residents in Harford County, 44,068 people together, or 17% of the county. Each figure counts only the part of the town inside Harford County; towns marked "part" extend into another county. The largest is Aberdeen with 18,451.

Counties bordering Harford County

The Census 2024 county adjacency file lists 5 neighbors for Harford County, including 2 across a state line. The most populous is Baltimore County, MD, with 852,425 residents. Distances run between Census internal points in a straight line.

• Baltimore County

  852,425 people

  18 mi WSW

• PA

  Lancaster County, PA

  563,293 people

  35 mi N

• PA

  York County, PA

  471,240 people

  35 mi NW

• Cecil County

  106,305 people

  19 mi E

• Kent County

  19,557 people

  22 mi SSE

Distance to Annapolis and the nearest big city

Annapolis is 39.9 miles SSW of Harford County's internal point in a straight line. The nearest place of 100,000 or more is Baltimore, MD (population 568,271), 23.3 miles away. The nearest place of 10,000 or more is Bel Air, MD (population 10,395), 2.5 miles away.

Harford County FIPS code

The FIPS code of Harford County is 24025: state code 24 for Maryland plus county code 025. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $104,553.