20879 ZIP Code
Gaithersburg, Maryland
December 16, 2025
| ZIP Code: | 20879 |
| City/Town: | Gaithersburg |
| County: | Montgomery |
| State: | Maryland |
| ZIP Type: | Standard |
| Population: | 27,489 |
| Median Household Income: | $100,324 |
| Per Capita Income: | $46,038 |
| Total Housing Units: | 9,243 |
| Median Home Value: | $414,700 |
| Land Area: | 8.6 sq miles
22.3 sq km |
| Water Area: | 0.0 sq miles
0.1 sq km |
| Coordinates: | 39.1673, -77.1641 |
Population Information (20879 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total Population: | 27,489 | -- | -- |
| Male: | 12,366 | 45.0% | 49.6% |
| Female: | 15,123 | 55.0% | 50.4% |
| Median Age: | 36.1 yrs | -- | 38.5 yrs |
| Under 5 years: | 1,675 | 6.1% | 5.7% |
| 5 to 9 years: | 1,968 | 7.2% | 6.0% |
| 10 to 14 years: | 1,842 | 6.7% | 6.5% |
| 15 to 19 years: | 1,686 | 6.1% | 6.6% |
| 20 to 24 years: | 1,936 | 7.0% | 6.7% |
| 25 to 34 years: | 4,136 | 15.0% | 13.7% |
| 35 to 44 years: | 3,508 | 12.8% | 12.9% |
| 45 to 54 years: | 3,218 | 11.7% | 12.4% |
| 55 to 59 years: | 2,111 | 7.7% | 6.5% |
| 60 to 64 years: | 2,021 | 7.4% | 6.4% |
| 65 to 74 years: | 2,245 | 8.2% | 9.7% |
| 75 to 84 years: | 1,015 | 3.7% | 4.8% |
| 85 years and over: | 128 | 0.5% | 2.0% |
Housing Information (20879 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Median home value: | $414,700 | -- | $281,900 |
| Median rooms: | 6.2 | -- | 5.5 |
| Median rent: | $1,832 / mo. | -- | $1,268 / mo. |
| Total housing units: | 9,243 | -- | -- |
| Occupied housing units: | 8,985 | 97.2% | 38.0% |
| Vacant housing units: | 258 | 2.8% | 4.6% |
| Housing tenure: | -- | -- | -- |
| Owner-occupied: | 6,413 | 71.4% | 64.8% |
| Renter-occupied: | 2,572 | 28.6% | 35.2% |
Educational Attainment (20879 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Population 25 years and over: | 18,382 | -- | -- |
| Less than 9th grade: | 1,094 | 6.0% | 4.7% |
| 9th to 12th grade, no diploma: | 928 | 5.0% | 6.1% |
| High school graduate: | 3,675 | 20.0% | 26.4% |
| Some college, no degree: | 3,288 | 17.9% | 19.7% |
| Associate degree: | 1,735 | 9.4% | 8.7% |
| Bachelor's degree: | 4,516 | 24.6% | 20.9% |
| Graduate or professional degree: | 3,146 | 17.1% | 13.7% |
| Percent high school graduate or higher: | -- | 89.0% | 89.1% |
| Percent bachelor's degree or higher: | -- | 41.7% | 34.3% |
Income Information (20879 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median household income: | $100,324 / yr. | $75,149 / yr. |
| Mean household income: | $125,626 / yr. | $105,833 / yr. |
| Median family income: | $120,231 / yr. | $92,646 / yr. |
| Per capita income: | $46,038 / yr. | $41,261 / yr. |
Employment (20879 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| In labor force: | 15,547 | -- | 63.5% |
| Employed: | 14,526 | 93.5% | 96.4% |
| Unemployed: | 1,003 | 6.5% | 5.3% |
| Not in labor force: | 6,174 | -- | -- |
| Class of Worker: | -- | -- | -- |
| Private wage and salary: | 10,622 | 73.1% | 79.7% |
| Government workers: | 2,647 | 18.2% | 14.2% |
| Self-employed: | 1,208 | 8.3% | 5.9% |
| Unpaid family workers: | 49 | 0.3% | 0.1% |
Race & Ethnicity (20879 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Race (one race): | -- | -- | -- |
| White: | 10,120 | 36.8% | 61.6% |
| Black or African American: | 5,612 | 20.4% | 12.4% |
| American Indian/Alaska Native: | 174 | 0.6% | 1.1% |
| Asian: | 3,807 | 13.8% | 6.0% |
| Native Hawaiian/Pacific Islander: | 37 | 0.1% | 0.2% |
| Some other race: | 5,275 | 19.2% | 8.4% |
| Two or more races: | 2,464 | 9.0% | 10.2% |
| Hispanic or Latino (any race): | 6,620 | 24.1% | 18.7% |
| Mexican: | 9,140 | 33.2% | 11.2% |
| Puerto Rican: | 847 | 3.1% | 1.8% |
| Cuban: | 218 | 0.8% | 0.7% |
| Other Hispanic or Latino: | 126 | 0.5% | 5.0% |
| Not Hispanic or Latino: | 7,949 | 28.9% | 81.1% |
Income Distribution (20879 zip code)
| Household Income | Households | Percent% | US AvgUS |
|---|---|---|---|
| Less than $10,000: | 314 | 3.5% | 4.9% |
| $10,000 to $14,999: | 145 | 1.6% | 3.8% |
| $15,000 to $24,999: | 497 | 5.5% | 7.0% |
| $25,000 to $34,999: | 421 | 4.7% | 7.4% |
| $35,000 to $49,999: | 501 | 5.6% | 10.7% |
| $50,000 to $74,999: | 1,278 | 14.2% | 16.1% |
| $75,000 to $99,999: | 1,322 | 14.7% | 12.8% |
| $100,000 to $149,999: | 1,778 | 19.8% | 17.1% |
| $150,000 to $199,999: | 1,263 | 14.1% | 8.8% |
| $200,000 or more: | 1,466 | 16.3% | 11.4% |
Commute to Work (20879 zip code)
| Commute Method | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Drove alone: | 9,824 | 67.6% | 67.8% |
| Carpooled: | 1,378 | 9.5% | 8.7% |
| Public transportation: | 1,149 | 7.9% | 4.2% |
| Walked: | 113 | 0.8% | 2.5% |
| Other means: | 184 | 1.3% | 0.9% |
| Worked from home: | 1,721 | 11.8% | 13.8% |
| Mean travel time to work: | 33.3 min | -- | 26.7 min |
Industry (20879 zip code)
| Industry Sector | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Agriculture, forestry, fishing, mining: | 37 | 0.3% | 1.6% |
| Construction: | 943 | 6.5% | 6.9% |
| Manufacturing: | 506 | 3.5% | 10.0% |
| Wholesale trade: | 272 | 1.9% | 2.4% |
| Retail trade: | 1,289 | 8.9% | 11.0% |
| Transportation, warehousing, utilities: | 433 | 3.0% | 5.8% |
| Information: | 146 | 1.0% | 1.9% |
| Finance, insurance, real estate: | 709 | 4.9% | 6.7% |
| Professional, scientific, management: | 2,939 | 20.2% | 12.1% |
| Education, health care, social services: | 3,285 | 22.6% | 23.3% |
| Arts, entertainment, food services: | 1,612 | 11.1% | 9.0% |
| Other services: | 1,029 | 7.1% | 4.7% |
| Public administration: | 1,326 | 9.1% | 4.7% |
Poverty Status (20879 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Poverty Rate: | -- | 10.6% | 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 (20879 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| With health insurance: | 24,823 | 90.3% | 91.3% |
| Private health insurance: | 19,133 | 69.6% | 67.6% |
| Public health coverage: | 8,625 | 31.4% | 35.9% |
| Without health insurance: | 2,628 | 9.6% | 8.7% |
Benefits & Assistance (20879 zip code)
| Households with: | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Earnings: | 8,073 | 89.8% | 77.4% |
| Social Security income: | 1,652 | 18.4% | 31.0% |
| Retirement income: | 1,667 | 18.6% | 21.8% |
| Supplemental Security Income (SSI): | 763 | 8.5% | 4.5% |
| Cash public assistance income: | 164 | 1.8% | 1.8% |
| SNAP (food stamps) benefits: | 924 | 10.3% | 11.4% |
Housing Types (20879 zip code)
| Structure Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| 1-unit, detached: | 3,590 | 38.8% | 61.4% |
| 1-unit, attached: | 3,024 | 32.7% | 6.1% |
| 2 units: | 22 | 0.2% | 3.4% |
| 3 or 4 units: | 207 | 2.2% | 4.3% |
| 5 to 9 units: | 489 | 5.3% | 4.6% |
| 10 to 19 units: | 1,191 | 12.9% | 4.3% |
| 20 or more units: | 611 | 6.6% | 9.9% |
| Mobile home: | 109 | 1.2% | 5.8% |
| Boat, RV, van, etc.: | 0 | 0.0% | 0.1% |
Year Structure Built (20879 zip code)
| Year Built | Units | Percent% | US AvgUS |
|---|---|---|---|
| Built 2020 or later: | 9 | 0.1% | 0.6% |
| Built 2010 to 2019: | 460 | 5.0% | 8.2% |
| Built 2000 to 2009: | 862 | 9.3% | 13.5% |
| Built 1990 to 1999: | 1,102 | 11.9% | 13.2% |
| Built 1980 to 1989: | 4,435 | 48.0% | 13.2% |
| Built 1970 to 1979: | 1,939 | 21.0% | 14.6% |
| Built 1960 to 1969: | 310 | 3.4% | 10.2% |
| Built 1950 to 1959: | 73 | 0.8% | 9.9% |
| Built 1940 to 1949: | 9 | 0.1% | 4.6% |
| Built 1939 or earlier: | 44 | 0.5% | 12.0% |
Bedrooms (20879 zip code)
| Number of Bedrooms | Units | Percent% | US AvgUS |
|---|---|---|---|
| No bedroom (studio): | 287 | 3.1% | 2.4% |
| 1 bedroom: | 1,100 | 11.9% | 3.0% |
| 2 bedrooms: | 1,423 | 15.4% | 9.1% |
| 3 bedrooms: | 3,313 | 35.8% | 15.9% |
| 4 bedrooms: | 2,184 | 23.6% | 18.8% |
| 5 or more bedrooms: | 936 | 10.1% | 17.6% |
Heating Fuel (20879 zip code)
| Fuel Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| Utility gas: | 2,850 | 31.7% | 47.1% |
| Bottled, tank, or LP gas: | 141 | 1.6% | 4.9% |
| Electricity: | 5,818 | 64.8% | 40.2% |
| Fuel oil, kerosene, etc.: | 62 | 0.7% | 4.2% |
| Coal or coke: | 0 | 0.0% | 0.1% |
| Wood: | 0 | 0.0% | 1.5% |
| Solar energy: | 23 | 0.3% | 0.1% |
| Other fuel: | 18 | 0.2% | 0.5% |
| No fuel used: | 73 | 0.8% | 0.2% |
Vehicles Available (20879 zip code)
| Vehicles | Households | Percent% | US AvgUS |
|---|---|---|---|
| No vehicle available: | 520 | 5.8% | 8.3% |
| 1 vehicle available: | 2,842 | 31.6% | 32.6% |
| 2 vehicles available: | 3,673 | 40.9% | 37.0% |
| 3 or more vehicles available: | 1,950 | 21.7% | 22.1% |
Home Value Distribution (20879 zip code)
| Value Range | Owner Units | Percent% | US AvgUS |
|---|---|---|---|
| Less than $50,000: | 199 | 3.1% | 5.7% |
| $50,000 to $99,999: | 50 | 0.8% | 7.8% |
| $100,000 to $149,999: | 169 | 2.6% | 9.2% |
| $150,000 to $199,999: | 327 | 5.1% | 10.8% |
| $200,000 to $299,999: | 685 | 10.7% | 19.9% |
| $300,000 to $499,999: | 2,873 | 44.8% | 24.1% |
| $500,000 to $999,999: | 1,946 | 30.3% | 17.0% |
| $1,000,000 or more: | 164 | 2.6% | 5.6% |
Housing Costs (20879 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median owner costs (with mortgage): | $2,284 / mo. | $1,828 / mo. |
| Median owner costs (no mortgage): | $623 / mo. | $584 / mo. |
| Median gross rent: | $1,832 / mo. | $1,268 / mo. |
| Average household size (owner-occupied): | 3.15 | 2.53 |
| Average household size (renter-occupied): | 2.80 | 2.38 |
Households (20879 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total households: | 8,985 | -- | -- |
| Married-couple households: | 4,872 | 54.2% | 47.5% |
| Cohabiting couple households: | 2,113 | 23.5% | 7.0% |
| Male householder, no spouse: | 1,122 | 12.5% | 5.4% |
| Female householder, no spouse: | 2,518 | 28.0% | 12.7% |
| Householder living alone: | 2,929 | 32.6% | 28.6% |
| 65 years and over living alone: | 2,328 | 25.9% | 11.8% |
| Average household size: | 3.05 | -- | 2.53 |
| Average family size: | 3.65 | -- | -- |
Marital Status (20879 zip code)
| Population 15 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 10,223 | -- | -- |
| Never married: | 3,593 | 35.1% | 37.0% |
| Now married: | 5,962 | 58.3% | 49.5% |
| Separated: | 96 | 0.9% | 1.5% |
| Widowed: | 539 | 5.3% | 2.6% |
| Divorced: | 4,335 | 42.4% | 9.3% |
School Enrollment (20879 zip code)
| Population 3 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Enrolled in school: | 7,329 | -- | -- |
| Nursery school, preschool: | 326 | 4.4% | 5.8% |
| Kindergarten: | 336 | 4.6% | 5.0% |
| Elementary school (grades 1-8): | 3,239 | 44.2% | 40.5% |
| High school (grades 9-12): | 1,272 | 17.4% | 21.4% |
| College or graduate school: | 2,156 | 29.4% | 27.3% |
Veterans & Disability (20879 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Civilian population 18 years and over: | 21,174 | -- | -- |
| Veterans: | 879 | 4.2% | 6.3% |
| Civilian noninstitutionalized population: | 27,451 | -- | -- |
| With a disability: | 2,672 | 9.7% | 13.4% |
| Under 18 with disability: | 216 | 8.1% | 5.8% |
| 18 to 64 with disability: | 1,315 | 49.2% | 10.4% |
| 65 and over with disability: | 1,141 | 42.7% | 33.4% |
Mobility (Residence 1 Year Ago) (20879 zip code)
| Population 1 year and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Same house: | 24,078 | 87.6% | 86.9% |
| Different house: | 3,113 | 11.3% | 13.1% |
| Same county: | 1,399 | 44.9% | 7.0% |
| Different county: | 1,240 | 39.8% | 3.2% |
| Different state: | 802 | 25.8% | 2.5% |
| Abroad: | 474 | 15.2% | 0.4% |
Place of Birth (20879 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Native born: | 17,284 | 62.9% | 86.2% |
| Foreign born: | 373 | 1.4% | 13.9% |
| Naturalized citizen: | 10,205 | 2735.9% | 52.7% |
| Not a citizen: | 10,205 | 2735.9% | 47.3% |
| Foreign-born by region: | -- | -- | -- |
| Europe: | 10,205 | 2735.9% | 10.5% |
| Asia: | 222 | 59.5% | 31.3% |
| Africa: | 1,283 | 344.0% | 5.5% |
| Oceania: | 4 | 1.1% | 0.5% |
| Latin America: | 5,309 | 1423.3% | 50.0% |
| Northern America: | 32 | 8.6% | 2.2% |
Language Spoken at Home (20879 zip code)
| Population 5 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 25,814 | -- | -- |
| English only: | 13,078 | 50.7% | 78.3% |
| Language other than English: | 12,736 | 49.3% | 21.5% |
| By language: | -- | -- | -- |
| Spanish: | 7,105 | 27.5% | 13.3% |
| Other Indo-European languages: | 3,123 | 12.1% | 3.5% |
| Asian/Pacific Island languages: | 1,917 | 7.4% | 3.5% |
| Other languages: | 591 | 2.3% | 1.0% |
Computers & Internet (20879 zip code)
| Households | Percent% | US AvgUS | |
|---|---|---|---|
| Households with a computer: | 8,985 | 100.0% | 93.1% |
| Households with broadband internet: | 8,766 | 97.6% | 89.4% |
Gaithersburg, MD20879