Town · Maryland
Mount Airy, Maryland
Mount Airy, town, mostly in Carroll County (63.5% of its 2020 residents), with a part in Frederick County, Maryland. Mount Airy had 9,857 residents on July 1, 2025 by the Census Bureau's estimate, up 2.1% since 2020; the 2020 Census counted 9,654 and the ACS 2020-2024 5-year estimates put it at 9,805 (±57). GEOID 2453875.
Residents, July 2025 estimate
9,857
Census Bureau estimate (no margin published)
2020 Census count: 9,654 · ACS 2020-2024: 9,805 ±57
Median household income
$151,324
±$12,406 (90% margin)
Maryland: $103,678
Median home value
$487,400
±$21,214 (90% margin)
Maryland: $419,900
Median gross rent
$1,854
±$281 (90% margin)
Maryland: $1,705
Where is Mount Airy and what county is it in?
Mount Airy is a town mostly in Carroll County (63.5% of its 2020 residents), with a part in Frederick County, Maryland. It covers 4.1 square miles of land, 2,334 residents per square mile in 2020.
Mount Airy is in the Baltimore-Columbia-Towson, MD metropolitan statistical area, which takes in 7 counties (Census Bureau delineation, July 2023).
| County | 2020 residents | Share |
|---|---|---|
| Carroll County | 6,126 | 63.5% |
| Frederick County | 3,528 | 36.5% |
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Mount Airy, and is it growing?
The Census Bureau estimates that 9,857 people lived in Mount Airy on July 1, 2025, up 2.1% since 2020, faster than Maryland (+1.4%). The 2020 Census counted 9,654 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 9,805 (±57).
| Measure | Mount Airy | Carroll County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 9,805 ±57 | 175,321 | +408 |
| Households | 3,300 ±159 | 64,285 | no clear change |
| Average household size | 2.96 ±0.14 | 2.66 | no clear change |
| Housing units | 3,442 ±182 | 66,768 | no clear change |
Mount Airy's population since 2000
From 6,425 in 2000 to 9,857 in 2025: up 53.4%. The 2000, 2010 and 2020 figures are census counts, each for Mount Airy 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 Mount Airy?
The median resident of Mount Airy is 37.8 years old; 27.6% are under 18 and 12.2% are 65 or older. The largest group is non-Hispanic white residents at 84.5%, then Hispanic or Latino residents (of any race) at 7.6%. 5.8% of residents were born outside the United States.
| Measure | Mount Airy | Carroll County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 37.8 ±2.1 | 41.3 | no clear change |
| Under 18 years | 27.6% ±2.7 pts | 22.0% | – |
| 65 years and over | 12.2% ±2.4 pts | 17.9% | – |
| Male | 48.6% ±2.1 pts | 49.7% | – |
| Hispanic or Latino (any race) | 7.6% ±3.4 pts | 5.1% | no clear change |
| White alone, not Hispanic | 84.5% ±4.2 pts | 84.5% | no clear change |
| Black or African American alone, not Hispanic | 2.6% ±1.4 pts | 4.0% | no clear change |
| Asian alone, not Hispanic | 0.9% ±0.6 pts | 2.4% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.4 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.4 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.8% ±1.5 pts | 3.2% | – |
| Some other race alone, not Hispanic | 0.7% ±0.9 pts | 0.7% | – |
| Born outside the United States | 5.8% ±2.2 pts | 5.5% | no clear change |
| Speak a language other than English at home (age 5+) | 6.9% ±2.8 pts | 6.9% | – |
| Civilian veterans (age 18+) | 8.9% ±2.4 pts | 7.5% | – |
| With a disability | 11.9% ±2.3 pts | 12.4% | – |
| No health insurance coverage | 1.7% ±1.6 pts | 2.9% | – |
| High school graduate or higher (age 25+) | 96.8% ±1.6 pts | 95.3% | – |
| Bachelor's degree or higher (age 25+) | 54.6% ±4.8 pts | 40.7% | +10.0 pts |
| Graduate or professional degree (age 25+) | 21.3% ±3.9 pts | 15.7% | – |
| Lived in the same house a year earlier | 86.7% ±5.5 pts | 93.3% | – |
| Moved from another state in the past year | 2.8% ±1.8 pts | 1.2% | – |
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 Mount Airy earn?
Half of Mount Airy's 3,300 households earn less than $151,324 a year (±$12,406), against $118,211 in Carroll County and $103,678 in Maryland. In 2015-2019 it was $154,286 in 2024 dollars; the margins of error cannot tell the two periods apart. 2.3% of residents live below the poverty line.
| Measure | Mount Airy | Carroll County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $151,324 ±$12,406 | $118,211 | no clear change |
| Mean household income | $168,087 ±$10,153 | $142,587 | – |
| Per capita income | $57,455 ±$3,150 | $53,124 | no clear change |
| People below the poverty line | 2.3% ±1.3 pts | 5.2% | −3.3 pts |
| Children under 18 below the poverty line | 1.0% ±1.6 pts | 5.0% | – |
| Households receiving SNAP | 5.1% ±2.3 pts | 5.2% | – |
| Households with a computer | 97.1% ±2.0 pts | 95.7% | – |
| Households with a broadband subscription | 94.8% ±2.4 pts | 92.5% | – |
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 Mount Airy?
Owners occupy 94.4% of Mount Airy's occupied homes and renters 5.6%. The median owner-occupied home is valued at $487,400 by its owner (±$21,214). The median renter pays $1,854 a month including utilities.
| Measure | Mount Airy | Carroll County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $487,400 ±$21,214 | $434,000 | +$30,197 |
| Median gross rent | $1,854 ±$281 | $1,427 | no clear change |
| Renters paying 35% or more of income on rent | 15.8% ±18.2 pts | 40.9% | – |
| Median monthly owner costs, with a mortgage | $2,598 ±$221 | $2,342 | – |
| Owner-occupied homes | 94.4% ±2.6 pts | 84.3% | +3.6 pts |
| Renter-occupied homes | 5.6% ±2.6 pts | 15.7% | – |
| Housing units | 3,442 ±182 | 66,768 | no clear change |
| Homeowner vacancy rate | 0.3% ±0.5 pts | 0.6% | – |
| Rental vacancy rate | 17.7% ±24.1 pts | 5.0% | – |
| Single-family detached homes | 71.0% ±5.0 pts | 78.4% | – |
| Mobile homes | 0.0% ±1.2 pts | 0.7% | – |
| Built 2020 or later | 0.7% ±0.8 pts | 1.5% | – |
| Built 2010 to 2019 | 5.8% ±2.4 pts | 4.9% | – |
| Built 1939 or earlier | 8.2% ±2.1 pts | 11.5% | – |
| Households with no vehicle | 3.2% ±1.7 pts | 3.3% | – |
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 do people in Mount Airy work and get to work?
73.5% of Mount Airy's workers drive alone and 17.8% work from home. The average trip to work takes 33.0 minutes. The unemployment rate in 2020-2024 averaged 2.2%.
| Measure | Mount Airy | Carroll County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 76.0% ±3.4 pts | 67.6% | – |
| Unemployment rate | 2.2% ±1.2 pts | 3.5% | no clear change |
| Drove alone to work | 73.5% ±3.9 pts | 73.9% | – |
| Carpooled | 6.6% ±2.5 pts | 6.7% | – |
| Public transportation | 0.4% ±0.4 pts | 0.3% | – |
| Walked | 1.3% ±0.9 pts | 1.0% | – |
| Worked from home | 17.8% ±3.1 pts | 17.3% | +11.3 pts |
| Mean travel time to work | 33.0 min ±2.3 | 34.4 min | −7.7 min |
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 Mount Airy?
2 census tracts lie mostly in Mount Airy, and 1 more reaches into it (2020 census blocks). Their median household incomes run from $128,921 (Tract 5130.01) to $163,681 (Tract 7520.01).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 5130.01Carroll County | 5,294 | $128,921 |
| Tract 7520.01Frederick County | 5,360 | $163,681 |
| Tract 5130.02Carroll County | 6,038 | $181,818 |
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 Mount Airy) · Census block assignment files
How does Mount Airy compare with other places in Maryland?
By the Census Bureau's July 2025 estimates, Mount Airy is the 3,250th-most populous of the 19,476 U.S. incorporated places that have one and the 24th-most populous of 157 in Maryland.
Mount Airy ranks 65th 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 | 24th | 157 |
| Growth 2020-2025 (PEP) | 41st | 99 |
| Residents per square mile | 154th | 326 |
| Median household income | 65th | 322 |
| Per capita income | 112th | 326 |
| Median home value | 102nd | 323 |
| Median gross rent | 125th | 288 |
| Poverty rate | 226th | 230 |
| Bachelor's degree or higher | 75th | 325 |
| Median age | 214th | 326 |
| Owner-occupied share | 33rd | 323 |
| Work from home | 155th | 293 |
| Travel time to work | 127th | 325 |
Mount Airy's figures with every place in Maryland (CSV)
Every place in Maryland, sortable · Compare Mount Airy 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 Mount Airy?
13 of the 57 figures for Mount Airy 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 Mount Airy 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 Mount Airy.