Harford County, Maryland Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 8th-largest in Maryland
The population of Harford County, Maryland is 262,509 as of the 2023 American Community Survey, making it the 8th-largest county in Maryland. The median household income is $111,317, the median home value is $367,300, and the median age is 40.5.
The population of Harford County has grown 8.3% since 2010 (245,236 → 265,514), a +0.57% annualized rate.
262,509
Population
+0.57%
Annual growth
601
People / sq mi
$111,317
Median Income
$367,300
Median Home Value
Harford County covers 437 sq mi of land at 600.5 people per square mile.
About Harford County, MD
What sets Harford County apart is money: median household income runs $111,317, above the US median of $78,538. Harford County is a county in Maryland with a population of 262,509. That makes it one of the ten largest counties in Maryland in the country, at #8 by population.
Households here are among the highest-earning of all US counties: median income is $111,317, above the US median of $78,538. Very few residents live in poverty — 4.6%, below the national 12.4%. Housing is expensive: the median home is worth $367,300, with typical rent around $1,557.
The population is unusually well-credentialed for US counties — 39.5% of adults have a four-year degree, above the national 35.0%. A solid 13.4% of workers are based at home, close to the national 14.0%, and the average commute runs about 32 minutes each way.
Taken together, the income and housing figures place Harford County firmly in the higher-cost, higher-earning tier of US counties — a profile that tends to track dense job markets and competitive housing.
Harford County Population History (2010-2024)
The county of Harford County had a population of 245,236 in 2010 and 265,514 in 2024, a 8.3% growth over 14 years. The peak was 265,514 in 2024. Average annual growth rate: 0.57%.
265,514
Population (2024)
245,236
Population (2010)
265,514
Peak (2024)
0.57%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 245,236 |
| 2011 | 246,746 |
| 2012 | 248,609 |
| 2013 | 248,961 |
| 2014 | 249,415 |
| 2015 | 249,690 |
| 2016 | 250,448 |
| 2017 | 251,948 |
| 2018 | 253,884 |
| 2019 | 255,594 |
| 2020 | 261,245 |
| 2021 | 263,348 |
| 2022 | 263,908 |
| 2023 | 264,771 |
| 2024 | 265,514 |
Race & Ethnicity
| White | 74.1% |
| Black or African American | 14.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.1% |
| Two or More Races | 0.0% |
Age & Sex
40.5
Median Age
50.8%
Female
49.2%
Male
17.0%
Age 65+
Age Distribution
Children (under 15): 18.3% · Seniors (65+): 17.0%
Income & Poverty
| Median household income | $111,317+$9,665 vs state |
| Mean household income | $132,060 |
| Per-capita income | $50,861 |
| Poverty rate | 4.6%-1.7% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 64.8% |
Top Industries by Employment
The largest employment sector in Harford County is professional & business services, accounting for 22.4% of workers.
How residents commute
0.9%
Drive alone
1.1%
Carpool
76.1%
Public transit
13.4%
Work from home
32.1 min
Avg commute
Housing
$367,300$-30,400 vs state
Median home value
$1,557
Median rent
79.7%
Homeownership rate
104,409
Total housing units
96.0%
Occupied
4.0%
Vacant
20.3%
Renter-occupied
Social & access
96.3%
With health insurance
97.0%
With broadband internet
27.2%
Foreign-born
9.0%
Veterans (18+)
10.9%
With a disability
91.9%
Speak language other than English at home
Education
94.6%
High School+
39.5%
Bachelor's+
Largest cities in Maryland
Other counties in Maryland
Part of Maryland
Metro areas in Maryland
County rankings
Frequently Asked Questions
Harford County, Maryland has a population of 262,509 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 8th-largest county in Maryland. Population density is 601 people per square mile.
The population of Harford County has grown 8.3% since 2010 (245,236 → 265,514), a +0.57% annualized rate.
The median household income in Harford County, Maryland is $111,317, with mean (average) household income of $132,060 and per-capita income of $50,861. 4.6% of residents live below the federal poverty level.
In Harford County, the largest racial and ethnic groups are White (74.1%), Black or African American (14.5%), Hispanic or Latino (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Harford County, Maryland is 40.5 years. Residents are 50.8% female and 49.2% male.
The median home value in Harford County is $367,300 and median monthly rent is $1,557. 79.7% of occupied housing units are owner-occupied. The county has 104,409 total housing units, 4.0% of which are vacant.
The largest employment sector in Harford County, Maryland is professional, scientific, and management services, employing 22.4% of workers. The unemployment rate is 2.5%.
Baltimore is among the largest cities associated with Harford County, Maryland, with a population of 577,193.
Harford County, MD Climate
Harford County, MD has an average annual temperature of 12.1°C (54°F) and receives about 1143 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
12.1°C
Avg Temp
1143
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 0° / 31° | 83 mm |
| February | 1° / 33° | 73 mm |
| March | 6° / 42° | 91 mm |
| April | 11° / 52° | 95 mm |
| May | 17° / 62° | 110 mm |
| June | 21° / 71° | 107 mm |
| July | 24° / 76° | 108 mm |
| August | 23° / 74° | 107 mm |
| September | 20° / 67° | 99 mm |
| October | 13° / 56° | 82 mm |
| November | 8° / 46° | 94 mm |
| December | 3° / 37° | 94 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Harford County, MD
The most comfortable months to visit Harford County, MD are typically June, September and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -5°C low). May is usually the wettest month.
Where to stay near Harford County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.