21771 ZIP Code
Mount Airy, Maryland
December 15, 2025
| ZIP Code: | 21771 |
| City/Town: | Mount Airy |
| County: | Frederick |
| State: | Maryland |
| ZIP Type: | Standard |
| Population: | 31,653 |
| Median Household Income: | $148,909 |
| Per Capita Income: | $64,467 |
| Total Housing Units: | 10,998 |
| Median Home Value: | $501,800 |
| Land Area: | 89.5 sq miles
231.9 sq km |
| Water Area: | 0.2 sq miles
0.5 sq km |
| Coordinates: | 39.3949, -77.1582 |
Population Information (21771 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total Population: | 31,653 | -- | -- |
| Male: | 16,283 | 51.4% | 49.6% |
| Female: | 15,370 | 48.6% | 50.4% |
| Median Age: | 41.6 yrs | -- | 38.5 yrs |
| Under 5 years: | 1,902 | 6.0% | 5.7% |
| 5 to 9 years: | 2,560 | 8.1% | 6.0% |
| 10 to 14 years: | 1,736 | 5.5% | 6.5% |
| 15 to 19 years: | 2,104 | 6.6% | 6.6% |
| 20 to 24 years: | 1,802 | 5.7% | 6.7% |
| 25 to 34 years: | 2,918 | 9.2% | 13.7% |
| 35 to 44 years: | 4,025 | 12.7% | 12.9% |
| 45 to 54 years: | 4,788 | 15.1% | 12.4% |
| 55 to 59 years: | 2,926 | 9.2% | 6.5% |
| 60 to 64 years: | 2,104 | 6.6% | 6.4% |
| 65 to 74 years: | 2,919 | 9.2% | 9.7% |
| 75 to 84 years: | 1,508 | 4.8% | 4.8% |
| 85 years and over: | 361 | 1.1% | 2.0% |
Housing Information (21771 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Median home value: | $501,800 | -- | $281,900 |
| Median rooms: | 8.1 | -- | 5.5 |
| Median rent: | $1,713 / mo. | -- | $1,268 / mo. |
| Total housing units: | 10,998 | -- | -- |
| Occupied housing units: | 10,570 | 96.1% | 38.0% |
| Vacant housing units: | 428 | 3.9% | 4.6% |
| Housing tenure: | -- | -- | -- |
| Owner-occupied: | 9,809 | 92.8% | 64.8% |
| Renter-occupied: | 761 | 7.2% | 35.2% |
Educational Attainment (21771 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Population 25 years and over: | 21,549 | -- | -- |
| Less than 9th grade: | 493 | 2.3% | 4.7% |
| 9th to 12th grade, no diploma: | 600 | 2.8% | 6.1% |
| High school graduate: | 4,869 | 22.6% | 26.4% |
| Some college, no degree: | 3,735 | 17.3% | 19.7% |
| Associate degree: | 1,931 | 9.0% | 8.7% |
| Bachelor's degree: | 5,741 | 26.6% | 20.9% |
| Graduate or professional degree: | 4,180 | 19.4% | 13.7% |
| Percent high school graduate or higher: | -- | 94.9% | 89.1% |
| Percent bachelor's degree or higher: | -- | 46.0% | 34.3% |
Income Information (21771 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median household income: | $148,909 / yr. | $75,149 / yr. |
| Mean household income: | $163,106 / yr. | $105,833 / yr. |
| Median family income: | $162,230 / yr. | $92,646 / yr. |
| Per capita income: | $64,467 / yr. | $41,261 / yr. |
Employment (21771 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| In labor force: | 17,743 | -- | 63.5% |
| Employed: | 17,135 | 96.7% | 96.4% |
| Unemployed: | 576 | 3.3% | 5.3% |
| Not in labor force: | 7,508 | -- | -- |
| Class of Worker: | -- | -- | -- |
| Private wage and salary: | 11,907 | 69.5% | 79.7% |
| Government workers: | 4,031 | 23.5% | 14.2% |
| Self-employed: | 1,129 | 6.6% | 5.9% |
| Unpaid family workers: | 68 | 0.4% | 0.1% |
Race & Ethnicity (21771 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Race (one race): | -- | -- | -- |
| White: | 27,569 | 87.1% | 61.6% |
| Black or African American: | 1,350 | 4.3% | 12.4% |
| American Indian/Alaska Native: | 18 | 0.1% | 1.1% |
| Asian: | 614 | 1.9% | 6.0% |
| Native Hawaiian/Pacific Islander: | 14 | 0.0% | 0.2% |
| Some other race: | 605 | 1.9% | 8.4% |
| Two or more races: | 1,483 | 4.7% | 10.2% |
| Hispanic or Latino (any race): | 1,245 | 3.9% | 18.7% |
| Mexican: | 2,015 | 6.4% | 11.2% |
| Puerto Rican: | 448 | 1.4% | 1.8% |
| Cuban: | 175 | 0.6% | 0.7% |
| Other Hispanic or Latino: | 89 | 0.3% | 5.0% |
| Not Hispanic or Latino: | 1,303 | 4.1% | 81.1% |
Income Distribution (21771 zip code)
| Household Income | Households | Percent% | US AvgUS |
|---|---|---|---|
| Less than $10,000: | 239 | 2.3% | 4.9% |
| $10,000 to $14,999: | 53 | 0.5% | 3.8% |
| $15,000 to $24,999: | 265 | 2.5% | 7.0% |
| $25,000 to $34,999: | 302 | 2.9% | 7.4% |
| $35,000 to $49,999: | 444 | 4.2% | 10.7% |
| $50,000 to $74,999: | 928 | 8.8% | 16.1% |
| $75,000 to $99,999: | 856 | 8.1% | 12.8% |
| $100,000 to $149,999: | 2,270 | 21.5% | 17.1% |
| $150,000 to $199,999: | 2,008 | 19.0% | 8.8% |
| $200,000 or more: | 3,205 | 30.3% | 11.4% |
Commute to Work (21771 zip code)
| Commute Method | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Drove alone: | 12,893 | 75.2% | 67.8% |
| Carpooled: | 1,038 | 6.1% | 8.7% |
| Public transportation: | 72 | 0.4% | 4.2% |
| Walked: | 93 | 0.5% | 2.5% |
| Other means: | 75 | 0.4% | 0.9% |
| Worked from home: | 2,706 | 15.8% | 13.8% |
| Mean travel time to work: | 36.2 min | -- | 26.7 min |
Industry (21771 zip code)
| Industry Sector | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Agriculture, forestry, fishing, mining: | 144 | 0.8% | 1.6% |
| Construction: | 1,549 | 9.0% | 6.9% |
| Manufacturing: | 1,248 | 7.3% | 10.0% |
| Wholesale trade: | 340 | 2.0% | 2.4% |
| Retail trade: | 1,656 | 9.7% | 11.0% |
| Transportation, warehousing, utilities: | 567 | 3.3% | 5.8% |
| Information: | 212 | 1.2% | 1.9% |
| Finance, insurance, real estate: | 758 | 4.4% | 6.7% |
| Professional, scientific, management: | 3,197 | 18.7% | 12.1% |
| Education, health care, social services: | 3,224 | 18.8% | 23.3% |
| Arts, entertainment, food services: | 1,325 | 7.7% | 9.0% |
| Other services: | 858 | 5.0% | 4.7% |
| Public administration: | 2,057 | 12.0% | 4.7% |
Poverty Status (21771 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Poverty Rate: | -- | 3.2% | 8.8% |
| All people below poverty level: | -- | -- | -- |
| Under 18 years: | -- | -- | 16.3% |
| 18 to 64 years: | -- | -- | 11.0% |
| 65 years and over: | -- | -- | 10.3% |
Health Insurance (21771 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| With health insurance: | 30,844 | 97.4% | 91.3% |
| Private health insurance: | 27,981 | 88.4% | 67.6% |
| Public health coverage: | 6,661 | 21.0% | 35.9% |
| Without health insurance: | 619 | 2.0% | 8.7% |
Benefits & Assistance (21771 zip code)
| Households with: | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Earnings: | 9,130 | 86.4% | 77.4% |
| Social Security income: | 2,861 | 27.1% | 31.0% |
| Retirement income: | 2,763 | 26.1% | 21.8% |
| Supplemental Security Income (SSI): | 190 | 1.8% | 4.5% |
| Cash public assistance income: | 236 | 2.2% | 1.8% |
| SNAP (food stamps) benefits: | 352 | 3.3% | 11.4% |
Housing Types (21771 zip code)
| Structure Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| 1-unit, detached: | 9,463 | 86.0% | 61.4% |
| 1-unit, attached: | 1,167 | 10.6% | 6.1% |
| 2 units: | 15 | 0.1% | 3.4% |
| 3 or 4 units: | 20 | 0.2% | 4.3% |
| 5 to 9 units: | 0 | 0.0% | 4.6% |
| 10 to 19 units: | 42 | 0.4% | 4.3% |
| 20 or more units: | 61 | 0.6% | 9.9% |
| Mobile home: | 230 | 2.1% | 5.8% |
| Boat, RV, van, etc.: | 0 | 0.0% | 0.1% |
Year Structure Built (21771 zip code)
| Year Built | Units | Percent% | US AvgUS |
|---|---|---|---|
| Built 2020 or later: | 63 | 0.6% | 0.6% |
| Built 2010 to 2019: | 412 | 3.7% | 8.2% |
| Built 2000 to 2009: | 1,976 | 18.0% | 13.5% |
| Built 1990 to 1999: | 2,429 | 22.1% | 13.2% |
| Built 1980 to 1989: | 2,254 | 20.5% | 13.2% |
| Built 1970 to 1979: | 2,017 | 18.3% | 14.6% |
| Built 1960 to 1969: | 612 | 5.6% | 10.2% |
| Built 1950 to 1959: | 334 | 3.0% | 9.9% |
| Built 1940 to 1949: | 152 | 1.4% | 4.6% |
| Built 1939 or earlier: | 749 | 6.8% | 12.0% |
Bedrooms (21771 zip code)
| Number of Bedrooms | Units | Percent% | US AvgUS |
|---|---|---|---|
| No bedroom (studio): | 110 | 1.0% | 2.4% |
| 1 bedroom: | 91 | 0.8% | 3.0% |
| 2 bedrooms: | 919 | 8.4% | 9.1% |
| 3 bedrooms: | 3,908 | 35.5% | 15.9% |
| 4 bedrooms: | 4,607 | 41.9% | 18.8% |
| 5 or more bedrooms: | 1,363 | 12.4% | 17.6% |
Heating Fuel (21771 zip code)
| Fuel Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| Utility gas: | 2,540 | 24.0% | 47.1% |
| Bottled, tank, or LP gas: | 514 | 4.9% | 4.9% |
| Electricity: | 5,397 | 51.1% | 40.2% |
| Fuel oil, kerosene, etc.: | 1,569 | 14.8% | 4.2% |
| Coal or coke: | 36 | 0.3% | 0.1% |
| Wood: | 240 | 2.3% | 1.5% |
| Solar energy: | 34 | 0.3% | 0.1% |
| Other fuel: | 148 | 1.4% | 0.5% |
| No fuel used: | 92 | 0.9% | 0.2% |
Vehicles Available (21771 zip code)
| Vehicles | Households | Percent% | US AvgUS |
|---|---|---|---|
| No vehicle available: | 252 | 2.4% | 8.3% |
| 1 vehicle available: | 1,403 | 13.3% | 32.6% |
| 2 vehicles available: | 4,263 | 40.3% | 37.0% |
| 3 or more vehicles available: | 4,652 | 44.0% | 22.1% |
Home Value Distribution (21771 zip code)
| Value Range | Owner Units | Percent% | US AvgUS |
|---|---|---|---|
| Less than $50,000: | 170 | 1.7% | 5.7% |
| $50,000 to $99,999: | 76 | 0.8% | 7.8% |
| $100,000 to $149,999: | 22 | 0.2% | 9.2% |
| $150,000 to $199,999: | 61 | 0.6% | 10.8% |
| $200,000 to $299,999: | 625 | 6.4% | 19.9% |
| $300,000 to $499,999: | 3,923 | 40.0% | 24.1% |
| $500,000 to $999,999: | 4,764 | 48.6% | 17.0% |
| $1,000,000 or more: | 168 | 1.7% | 5.6% |
Housing Costs (21771 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median owner costs (with mortgage): | $2,540 / mo. | $1,828 / mo. |
| Median owner costs (no mortgage): | $686 / mo. | $584 / mo. |
| Median gross rent: | $1,713 / mo. | $1,268 / mo. |
| Average household size (owner-occupied): | 3.00 | 2.53 |
| Average household size (renter-occupied): | 2.59 | 2.38 |
Households (21771 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total households: | 10,570 | -- | -- |
| Married-couple households: | 7,550 | 71.4% | 47.5% |
| Cohabiting couple households: | 2,922 | 27.6% | 7.0% |
| Male householder, no spouse: | 1,193 | 11.3% | 5.4% |
| Female householder, no spouse: | 1,467 | 13.9% | 12.7% |
| Householder living alone: | 3,589 | 34.0% | 28.6% |
| 65 years and over living alone: | 3,216 | 30.4% | 11.8% |
| Average household size: | 2.98 | -- | 2.53 |
| Average family size: | 3.31 | -- | -- |
Marital Status (21771 zip code)
| Population 15 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 12,948 | -- | -- |
| Never married: | 3,579 | 27.6% | 37.0% |
| Now married: | 8,177 | 63.2% | 49.5% |
| Separated: | 314 | 2.4% | 1.5% |
| Widowed: | 762 | 5.9% | 2.6% |
| Divorced: | 2,750 | 21.2% | 9.3% |
School Enrollment (21771 zip code)
| Population 3 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Enrolled in school: | 7,922 | -- | -- |
| Nursery school, preschool: | 576 | 7.3% | 5.8% |
| Kindergarten: | 427 | 5.4% | 5.0% |
| Elementary school (grades 1-8): | 3,231 | 40.8% | 40.5% |
| High school (grades 9-12): | 1,578 | 19.9% | 21.4% |
| College or graduate school: | 2,110 | 26.6% | 27.3% |
Veterans & Disability (21771 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Civilian population 18 years and over: | 24,087 | -- | -- |
| Veterans: | 1,843 | 7.7% | 6.3% |
| Civilian noninstitutionalized population: | 31,463 | -- | -- |
| With a disability: | 3,150 | 10.0% | 13.4% |
| Under 18 with disability: | 344 | 10.9% | 5.8% |
| 18 to 64 with disability: | 1,482 | 47.0% | 10.4% |
| 65 and over with disability: | 1,324 | 42.0% | 33.4% |
Mobility (Residence 1 Year Ago) (21771 zip code)
| Population 1 year and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Same house: | 28,340 | 89.5% | 86.9% |
| Different house: | 2,991 | 9.4% | 13.1% |
| Same county: | 678 | 22.7% | 7.0% |
| Different county: | 2,109 | 70.5% | 3.2% |
| Different state: | 572 | 19.1% | 2.5% |
| Abroad: | 204 | 6.8% | 0.4% |
Place of Birth (21771 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Native born: | 29,396 | 92.9% | 86.2% |
| Foreign born: | 418 | 1.3% | 13.9% |
| Naturalized citizen: | 2,257 | 540.0% | 52.7% |
| Not a citizen: | 2,257 | 540.0% | 47.3% |
| Foreign-born by region: | -- | -- | -- |
| Europe: | 2,257 | 540.0% | 10.5% |
| Asia: | 359 | 85.9% | 31.3% |
| Africa: | 325 | 77.8% | 5.5% |
| Oceania: | 30 | 7.2% | 0.5% |
| Latin America: | 903 | 216.0% | 50.0% |
| Northern America: | 12 | 2.9% | 2.2% |
Language Spoken at Home (21771 zip code)
| Population 5 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 29,751 | -- | -- |
| English only: | 27,200 | 91.4% | 78.3% |
| Language other than English: | 2,551 | 8.6% | 21.5% |
| By language: | -- | -- | -- |
| Spanish: | 1,235 | 4.2% | 13.3% |
| Other Indo-European languages: | 540 | 1.8% | 3.5% |
| Asian/Pacific Island languages: | 396 | 1.3% | 3.5% |
| Other languages: | 380 | 1.3% | 1.0% |
Computers & Internet (21771 zip code)
| Households | Percent% | US AvgUS | |
|---|---|---|---|
| Households with a computer: | 10,570 | 100.0% | 93.1% |
| Households with broadband internet: | 10,100 | 95.6% | 89.4% |
Mount Airy, MD21771