City · Maryland
Aberdeen, Maryland
Aberdeen, city, in Harford County, Maryland. Aberdeen had 18,374 residents on July 1, 2025 by the Census Bureau's estimate, up 12.7% since 2020; the 2020 Census counted 16,254 and the ACS 2020-2024 5-year estimates put it at 17,298 (±37). GEOID 2400125.
Residents, July 2025 estimate
18,374
Census Bureau estimate (no margin published)
2020 Census count: 16,254 · ACS 2020-2024: 17,298 ±37
Median household income
$74,826
±$8,950 (90% margin)
Maryland: $103,678
Median home value
$261,400
±$21,804 (90% margin)
Maryland: $419,900
Median gross rent
$1,363
±$78 (90% margin)
Maryland: $1,705
Where is Aberdeen and what county is it in?
Aberdeen is a city in Harford County, Maryland. It covers 7.0 square miles of land, 2,335 residents per square mile in 2020.
Aberdeen is in the Baltimore-Columbia-Towson, MD metropolitan statistical area, which takes in 7 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Aberdeen, and is it growing?
The Census Bureau estimates that 18,374 people lived in Aberdeen on July 1, 2025, up 12.7% since 2020, faster than Maryland (+1.4%). The 2020 Census counted 16,254 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 17,298 (±37).
| Measure | Aberdeen | Harford County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 17,298 ±37 | 263,757 | +1,450 |
| Households | 7,300 ±391 | 101,795 | +811 |
| Average household size | 2.36 ±0.13 | 2.57 | no clear change |
| Housing units | 7,544 ±414 | 105,468 | no clear change |
Aberdeen's population since 2000
From 13,842 in 2000 to 18,374 in 2025: up 32.7%. The 2000, 2010 and 2020 figures are census counts, each for Aberdeen as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Aberdeen?
The median resident of Aberdeen is 38.8 years old; 21.6% are under 18 and 16.9% are 65 or older. The largest group is non-Hispanic white residents at 50.0%, then non-Hispanic Black residents at 28.9%. 9.3% of residents were born outside the United States.
| Measure | Aberdeen | Harford County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 38.8 ±2.3 | 40.5 | no clear change |
| Under 18 years | 21.6% ±2.3 pts | 22.3% | – |
| 65 years and over | 16.9% ±2.5 pts | 17.4% | – |
| Male | 49.5% ±2.1 pts | 49.2% | – |
| Hispanic or Latino (any race) | 11.0% ±3.1 pts | 5.8% | no clear change |
| White alone, not Hispanic | 50.0% ±4.1 pts | 71.6% | −5.8 pts |
| Black or African American alone, not Hispanic | 28.9% ±4.3 pts | 14.1% | no clear change |
| Asian alone, not Hispanic | 2.0% ±0.9 pts | 3.0% | −3.4 pts |
| American Indian and Alaska Native alone, not Hispanic | 0.3% ±0.3 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.2 pts | 0.1% | – |
| Two or more races, not Hispanic | 6.1% ±1.9 pts | 4.7% | – |
| Some other race alone, not Hispanic | 1.7% ±1.6 pts | 0.7% | – |
| Born outside the United States | 9.3% ±2.7 pts | 5.9% | no clear change |
| Speak a language other than English at home (age 5+) | 12.1% ±3.0 pts | 8.6% | – |
| Civilian veterans (age 18+) | 11.6% ±1.8 pts | 8.6% | – |
| With a disability | 15.8% ±3.0 pts | 11.3% | – |
| No health insurance coverage | 5.2% ±1.6 pts | 3.6% | no clear change |
| High school graduate or higher (age 25+) | 92.5% ±2.5 pts | 95.1% | – |
| Bachelor's degree or higher (age 25+) | 25.6% ±3.2 pts | 40.3% | no clear change |
| Graduate or professional degree (age 25+) | 10.8% ±2.3 pts | 17.0% | – |
| Lived in the same house a year earlier | 88.9% ±3.3 pts | 91.1% | – |
| Moved from another state in the past year | 3.0% ±2.5 pts | 1.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Aberdeen earn?
Half of Aberdeen's 7,300 households earn less than $74,826 a year (±$8,950), against $112,265 in Harford County and $103,678 in Maryland. In 2015-2019 it was $78,570 in 2024 dollars; the margins of error cannot tell the two periods apart. 14.3% of residents live below the poverty line.
| Measure | Aberdeen | Harford County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $74,826 ±$8,950 | $112,265 | no clear change |
| Mean household income | $94,422 ±$7,851 | $133,148 | – |
| Per capita income | $40,079 ±$2,812 | $51,717 | no clear change |
| People below the poverty line | 14.3% ±4.1 pts | 7.1% | no clear change |
| Children under 18 below the poverty line | 19.5% ±9.6 pts | 7.7% | no clear change |
| Households receiving SNAP | 13.6% ±2.8 pts | 7.4% | – |
| Households with a computer | 94.5% ±2.7 pts | 97.2% | – |
| Households with a broadband subscription | 88.8% ±2.9 pts | 92.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Aberdeen?
Owners occupy 62.1% of Aberdeen's occupied homes and renters 37.9%. The median owner-occupied home is valued at $261,400 by its owner (±$21,804). The median renter pays $1,363 a month including utilities, and 38.9% of renters pay 35% or more of their income on rent.
| Measure | Aberdeen | Harford County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $261,400 ±$21,804 | $386,400 | no clear change |
| Median gross rent | $1,363 ±$78 | $1,586 | no clear change |
| Renters paying 35% or more of income on rent | 38.9% ±7.9 pts | 39.2% | −12.8 pts |
| Median monthly owner costs, with a mortgage | $1,821 ±$146 | $2,165 | – |
| Owner-occupied homes | 62.1% ±3.8 pts | 79.7% | no clear change |
| Renter-occupied homes | 37.9% ±3.8 pts | 20.3% | – |
| Housing units | 7,544 ±414 | 105,468 | no clear change |
| Homeowner vacancy rate | 0.3% ±0.6 pts | 0.4% | – |
| Rental vacancy rate | 0.9% ±1.5 pts | 3.6% | – |
| Single-family detached homes | 57.0% ±4.6 pts | 60.1% | – |
| Mobile homes | 4.4% ±1.7 pts | 2.6% | – |
| Built 2020 or later | 2.4% ±1.2 pts | 1.4% | – |
| Built 2010 to 2019 | 7.9% ±2.3 pts | 8.0% | – |
| Built 1939 or earlier | 8.0% ±2.8 pts | 4.4% | – |
| Households with no vehicle | 9.3% ±2.5 pts | 4.4% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Aberdeen building?
Builders took permits for 103 new housing units in Aberdeen in 2025 (83 in single-family houses), 5.6 per 1,000 residents against 2.1 across Maryland.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Aberdeen work and get to work?
78.1% of Aberdeen's workers drive alone and 8.4% work from home. The average trip to work takes 27.5 minutes. The unemployment rate in 2020-2024 averaged 5.7%.
| Measure | Aberdeen | Harford County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 65.2% ±4.1 pts | 67.5% | – |
| Unemployment rate | 5.7% ±1.8 pts | 3.8% | no clear change |
| Drove alone to work | 78.1% ±3.8 pts | 75.1% | – |
| Carpooled | 8.7% ±2.5 pts | 6.9% | – |
| Public transportation | 1.5% ±1.0 pts | 0.6% | – |
| Walked | 1.5% ±1.2 pts | 1.1% | – |
| Worked from home | 8.4% ±2.1 pts | 14.9% | +7.3 pts |
| Mean travel time to work | 27.5 min ±2.4 | 32.1 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Aberdeen?
4 census tracts lie mostly in Aberdeen, and 4 more reach into it (2020 census blocks). Their median household incomes run from $50,099 (Tract 3029.01) to $101,296 (Tract 3028.01).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 3028.02Harford County | 5,416 | $70,667 |
| Tract 3029.02Harford County | 4,813 | $69,663 |
| Tract 3029.01Harford County | 2,848 | $50,099 |
| Tract 3028.01Harford County | 3,565 | $101,296 |
| Tract 3024Harford County | 5,218 | $83,506 |
| Tract 3022Harford County | 3,233 | $122,931 |
| Tract 3063Harford County | 2,986 | $159,531 |
| Tract 3065Harford County | 2,441 | $119,894 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Aberdeen) · Census block assignment files
How does Aberdeen compare with other places in Maryland?
By the Census Bureau's July 2025 estimates, Aberdeen is the 2,075th-most populous of the 19,476 U.S. incorporated places that have one and the 15th-most populous of 157 in Maryland.
Aberdeen ranks 267th of 322 places in Maryland with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 15th | 157 |
| Growth 2020-2025 (PEP) | 9th | 99 |
| Residents per square mile | 153rd | 326 |
| Median household income | 267th | 322 |
| Per capita income | 241st | 326 |
| Median home value | 282nd | 323 |
| Median gross rent | 234th | 288 |
| Poverty rate | 49th | 230 |
| Bachelor's degree or higher | 257th | 325 |
| Median age | 188th | 326 |
| Owner-occupied share | 238th | 323 |
| Work from home | 270th | 293 |
| Travel time to work | 251st | 325 |
Aberdeen's figures with every place in Maryland (CSV)
Every place in Maryland, sortable · Compare Aberdeen with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Aberdeen?
8 of the 57 figures for Aberdeen on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Aberdeen are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Aberdeen.