20851 ZIP Code
Rockville, Maryland
December 15, 2025
| ZIP Code: | 20851 |
| City/Town: | Rockville |
| County: | Montgomery |
| State: | Maryland |
| ZIP Type: | Standard |
| Population: | 14,659 |
| Median Household Income: | $107,578 |
| Per Capita Income: | $46,231 |
| Total Housing Units: | 5,314 |
| Median Home Value: | $466,700 |
| Land Area: | 2.5 sq miles
6.6 sq km |
| Water Area: | 0.0 sq miles
0.0 sq km |
| Coordinates: | 39.0781, -77.1208 |
Population Information (20851 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total Population: | 14,659 | -- | -- |
| Male: | 7,519 | 51.3% | 49.6% |
| Female: | 7,140 | 48.7% | 50.4% |
| Median Age: | 36.0 yrs | -- | 38.5 yrs |
| Under 5 years: | 763 | 5.2% | 5.7% |
| 5 to 9 years: | 782 | 5.3% | 6.0% |
| 10 to 14 years: | 885 | 6.0% | 6.5% |
| 15 to 19 years: | 949 | 6.5% | 6.6% |
| 20 to 24 years: | 1,023 | 7.0% | 6.7% |
| 25 to 34 years: | 2,611 | 17.8% | 13.7% |
| 35 to 44 years: | 1,901 | 13.0% | 12.9% |
| 45 to 54 years: | 2,122 | 14.5% | 12.4% |
| 55 to 59 years: | 865 | 5.9% | 6.5% |
| 60 to 64 years: | 968 | 6.6% | 6.4% |
| 65 to 74 years: | 1,249 | 8.5% | 9.7% |
| 75 to 84 years: | 362 | 2.5% | 4.8% |
| 85 years and over: | 179 | 1.2% | 2.0% |
Housing Information (20851 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Median home value: | $466,700 | -- | $281,900 |
| Median rooms: | 6.0 | -- | 5.5 |
| Median rent: | $1,900 / mo. | -- | $1,268 / mo. |
| Total housing units: | 5,314 | -- | -- |
| Occupied housing units: | 5,081 | 95.6% | 38.0% |
| Vacant housing units: | 233 | 4.4% | 4.6% |
| Housing tenure: | -- | -- | -- |
| Owner-occupied: | 3,030 | 59.6% | 64.8% |
| Renter-occupied: | 2,051 | 40.4% | 35.2% |
Educational Attainment (20851 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Population 25 years and over: | 10,257 | -- | -- |
| Less than 9th grade: | 591 | 5.8% | 4.7% |
| 9th to 12th grade, no diploma: | 1,033 | 10.1% | 6.1% |
| High school graduate: | 2,177 | 21.2% | 26.4% |
| Some college, no degree: | 1,589 | 15.5% | 19.7% |
| Associate degree: | 625 | 6.1% | 8.7% |
| Bachelor's degree: | 2,251 | 21.9% | 20.9% |
| Graduate or professional degree: | 1,991 | 19.4% | 13.7% |
| Percent high school graduate or higher: | -- | 84.2% | 89.1% |
| Percent bachelor's degree or higher: | -- | 41.4% | 34.3% |
Income Information (20851 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median household income: | $107,578 / yr. | $75,149 / yr. |
| Mean household income: | $130,255 / yr. | $105,833 / yr. |
| Median family income: | $115,867 / yr. | $92,646 / yr. |
| Per capita income: | $46,231 / yr. | $41,261 / yr. |
Employment (20851 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| In labor force: | 9,258 | -- | 63.5% |
| Employed: | 8,896 | 96.5% | 96.4% |
| Unemployed: | 325 | 3.5% | 5.3% |
| Not in labor force: | 2,805 | -- | -- |
| Class of Worker: | -- | -- | -- |
| Private wage and salary: | 6,473 | 72.8% | 79.7% |
| Government workers: | 1,910 | 21.5% | 14.2% |
| Self-employed: | 497 | 5.6% | 5.9% |
| Unpaid family workers: | 16 | 0.2% | 0.1% |
Race & Ethnicity (20851 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Race (one race): | -- | -- | -- |
| White: | 5,012 | 34.2% | 61.6% |
| Black or African American: | 1,705 | 11.6% | 12.4% |
| American Indian/Alaska Native: | 93 | 0.6% | 1.1% |
| Asian: | 2,357 | 16.1% | 6.0% |
| Native Hawaiian/Pacific Islander: | 0 | 0.0% | 0.2% |
| Some other race: | 3,503 | 23.9% | 8.4% |
| Two or more races: | 1,989 | 13.6% | 10.2% |
| Hispanic or Latino (any race): | 5,099 | 34.8% | 18.7% |
| Mexican: | 6,041 | 41.2% | 11.2% |
| Puerto Rican: | 409 | 2.8% | 1.8% |
| Cuban: | 107 | 0.7% | 0.7% |
| Other Hispanic or Latino: | 96 | 0.7% | 5.0% |
| Not Hispanic or Latino: | 5,429 | 37.0% | 81.1% |
Income Distribution (20851 zip code)
| Household Income | Households | Percent% | US AvgUS |
|---|---|---|---|
| Less than $10,000: | 148 | 2.9% | 4.9% |
| $10,000 to $14,999: | 30 | 0.6% | 3.8% |
| $15,000 to $24,999: | 106 | 2.1% | 7.0% |
| $25,000 to $34,999: | 183 | 3.6% | 7.4% |
| $35,000 to $49,999: | 615 | 12.1% | 10.7% |
| $50,000 to $74,999: | 704 | 13.9% | 16.1% |
| $75,000 to $99,999: | 630 | 12.4% | 12.8% |
| $100,000 to $149,999: | 1,122 | 22.1% | 17.1% |
| $150,000 to $199,999: | 744 | 14.6% | 8.8% |
| $200,000 or more: | 799 | 15.7% | 11.4% |
Commute to Work (20851 zip code)
| Commute Method | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Drove alone: | 4,587 | 51.6% | 67.8% |
| Carpooled: | 566 | 6.4% | 8.7% |
| Public transportation: | 1,315 | 14.8% | 4.2% |
| Walked: | 175 | 2.0% | 2.5% |
| Other means: | 419 | 4.7% | 0.9% |
| Worked from home: | 1,706 | 19.2% | 13.8% |
| Mean travel time to work: | 30.5 min | -- | 26.7 min |
Industry (20851 zip code)
| Industry Sector | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Agriculture, forestry, fishing, mining: | 0 | 0.0% | 1.6% |
| Construction: | 1,208 | 13.6% | 6.9% |
| Manufacturing: | 234 | 2.6% | 10.0% |
| Wholesale trade: | 147 | 1.7% | 2.4% |
| Retail trade: | 877 | 9.9% | 11.0% |
| Transportation, warehousing, utilities: | 206 | 2.3% | 5.8% |
| Information: | 204 | 2.3% | 1.9% |
| Finance, insurance, real estate: | 435 | 4.9% | 6.7% |
| Professional, scientific, management: | 1,687 | 19.0% | 12.1% |
| Education, health care, social services: | 1,702 | 19.1% | 23.3% |
| Arts, entertainment, food services: | 1,179 | 13.3% | 9.0% |
| Other services: | 467 | 5.2% | 4.7% |
| Public administration: | 550 | 6.2% | 4.7% |
Poverty Status (20851 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Poverty Rate: | -- | 9.6% | 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 (20851 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| With health insurance: | 12,896 | 88.0% | 91.3% |
| Private health insurance: | 10,445 | 71.3% | 67.6% |
| Public health coverage: | 4,078 | 27.8% | 35.9% |
| Without health insurance: | 1,726 | 11.8% | 8.7% |
Benefits & Assistance (20851 zip code)
| Households with: | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Earnings: | 4,552 | 89.6% | 77.4% |
| Social Security income: | 998 | 19.6% | 31.0% |
| Retirement income: | 684 | 13.5% | 21.8% |
| Supplemental Security Income (SSI): | 226 | 4.4% | 4.5% |
| Cash public assistance income: | 151 | 3.0% | 1.8% |
| SNAP (food stamps) benefits: | 627 | 12.3% | 11.4% |
Housing Types (20851 zip code)
| Structure Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| 1-unit, detached: | 3,525 | 66.3% | 61.4% |
| 1-unit, attached: | 250 | 4.7% | 6.1% |
| 2 units: | 19 | 0.4% | 3.4% |
| 3 or 4 units: | 73 | 1.4% | 4.3% |
| 5 to 9 units: | 355 | 6.7% | 4.6% |
| 10 to 19 units: | 582 | 11.0% | 4.3% |
| 20 or more units: | 510 | 9.6% | 9.9% |
| Mobile home: | 0 | 0.0% | 5.8% |
| Boat, RV, van, etc.: | 0 | 0.0% | 0.1% |
Year Structure Built (20851 zip code)
| Year Built | Units | Percent% | US AvgUS |
|---|---|---|---|
| Built 2020 or later: | 0 | 0.0% | 0.6% |
| Built 2010 to 2019: | 186 | 3.5% | 8.2% |
| Built 2000 to 2009: | 129 | 2.4% | 13.5% |
| Built 1990 to 1999: | 280 | 5.3% | 13.2% |
| Built 1980 to 1989: | 583 | 11.0% | 13.2% |
| Built 1970 to 1979: | 342 | 6.4% | 14.6% |
| Built 1960 to 1969: | 851 | 16.0% | 10.2% |
| Built 1950 to 1959: | 2,504 | 47.1% | 9.9% |
| Built 1940 to 1949: | 285 | 5.4% | 4.6% |
| Built 1939 or earlier: | 154 | 2.9% | 12.0% |
Bedrooms (20851 zip code)
| Number of Bedrooms | Units | Percent% | US AvgUS |
|---|---|---|---|
| No bedroom (studio): | 90 | 1.7% | 2.4% |
| 1 bedroom: | 462 | 8.7% | 3.0% |
| 2 bedrooms: | 936 | 17.6% | 9.1% |
| 3 bedrooms: | 2,030 | 38.2% | 15.9% |
| 4 bedrooms: | 1,477 | 27.8% | 18.8% |
| 5 or more bedrooms: | 319 | 6.0% | 17.6% |
Heating Fuel (20851 zip code)
| Fuel Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| Utility gas: | 3,886 | 76.5% | 47.1% |
| Bottled, tank, or LP gas: | 10 | 0.2% | 4.9% |
| Electricity: | 1,149 | 22.6% | 40.2% |
| Fuel oil, kerosene, etc.: | 11 | 0.2% | 4.2% |
| Coal or coke: | 0 | 0.0% | 0.1% |
| Wood: | 9 | 0.2% | 1.5% |
| Solar energy: | 9 | 0.2% | 0.1% |
| Other fuel: | 7 | 0.1% | 0.5% |
| No fuel used: | 0 | 0.0% | 0.2% |
Vehicles Available (20851 zip code)
| Vehicles | Households | Percent% | US AvgUS |
|---|---|---|---|
| No vehicle available: | 377 | 7.4% | 8.3% |
| 1 vehicle available: | 1,821 | 35.8% | 32.6% |
| 2 vehicles available: | 1,598 | 31.5% | 37.0% |
| 3 or more vehicles available: | 1,285 | 25.3% | 22.1% |
Home Value Distribution (20851 zip code)
| Value Range | Owner Units | Percent% | US AvgUS |
|---|---|---|---|
| Less than $50,000: | 69 | 2.3% | 5.7% |
| $50,000 to $99,999: | 14 | 0.5% | 7.8% |
| $100,000 to $149,999: | 0 | 0.0% | 9.2% |
| $150,000 to $199,999: | 9 | 0.3% | 10.8% |
| $200,000 to $299,999: | 83 | 2.7% | 19.9% |
| $300,000 to $499,999: | 1,789 | 59.0% | 24.1% |
| $500,000 to $999,999: | 1,031 | 34.0% | 17.0% |
| $1,000,000 or more: | 35 | 1.2% | 5.6% |
Housing Costs (20851 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median owner costs (with mortgage): | $2,350 / mo. | $1,828 / mo. |
| Median owner costs (no mortgage): | $724 / mo. | $584 / mo. |
| Median gross rent: | $1,900 / mo. | $1,268 / mo. |
| Average household size (owner-occupied): | 2.78 | 2.53 |
| Average household size (renter-occupied): | 3.02 | 2.38 |
Households (20851 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total households: | 5,081 | -- | -- |
| Married-couple households: | 2,271 | 44.7% | 47.5% |
| Cohabiting couple households: | 847 | 16.7% | 7.0% |
| Male householder, no spouse: | 1,151 | 22.7% | 5.4% |
| Female householder, no spouse: | 1,377 | 27.1% | 12.7% |
| Householder living alone: | 1,604 | 31.6% | 28.6% |
| 65 years and over living alone: | 1,378 | 27.1% | 11.8% |
| Average household size: | 2.88 | -- | 2.53 |
| Average family size: | 3.34 | -- | -- |
Marital Status (20851 zip code)
| Population 15 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 6,276 | -- | -- |
| Never married: | 2,723 | 43.4% | 37.0% |
| Now married: | 2,870 | 45.7% | 49.5% |
| Separated: | 147 | 2.3% | 1.5% |
| Widowed: | 359 | 5.7% | 2.6% |
| Divorced: | 2,145 | 34.2% | 9.3% |
School Enrollment (20851 zip code)
| Population 3 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Enrolled in school: | 3,617 | -- | -- |
| Nursery school, preschool: | 333 | 9.2% | 5.8% |
| Kindergarten: | 204 | 5.6% | 5.0% |
| Elementary school (grades 1-8): | 1,359 | 37.6% | 40.5% |
| High school (grades 9-12): | 647 | 17.9% | 21.4% |
| College or graduate school: | 1,074 | 29.7% | 27.3% |
Veterans & Disability (20851 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Civilian population 18 years and over: | 11,732 | -- | -- |
| Veterans: | 449 | 3.8% | 6.3% |
| Civilian noninstitutionalized population: | 14,622 | -- | -- |
| With a disability: | 1,112 | 7.6% | 13.4% |
| Under 18 with disability: | 127 | 11.4% | 5.8% |
| 18 to 64 with disability: | 598 | 53.8% | 10.4% |
| 65 and over with disability: | 387 | 34.8% | 33.4% |
Mobility (Residence 1 Year Ago) (20851 zip code)
| Population 1 year and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Same house: | 12,795 | 87.3% | 86.9% |
| Different house: | 1,704 | 11.6% | 13.1% |
| Same county: | 965 | 56.6% | 7.0% |
| Different county: | 698 | 41.0% | 3.2% |
| Different state: | 466 | 27.3% | 2.5% |
| Abroad: | 41 | 2.4% | 0.4% |
Place of Birth (20851 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Native born: | 9,625 | 65.7% | 86.2% |
| Foreign born: | 192 | 1.3% | 13.9% |
| Naturalized citizen: | 5,034 | 2621.9% | 52.7% |
| Not a citizen: | 5,034 | 2621.9% | 47.3% |
| Foreign-born by region: | -- | -- | -- |
| Europe: | 5,034 | 2621.9% | 10.5% |
| Asia: | 254 | 132.3% | 31.3% |
| Africa: | 233 | 121.4% | 5.5% |
| Oceania: | 0 | 0.0% | 0.5% |
| Latin America: | 2,753 | 1433.9% | 50.0% |
| Northern America: | 27 | 14.1% | 2.2% |
Language Spoken at Home (20851 zip code)
| Population 5 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 13,896 | -- | -- |
| English only: | 6,483 | 46.7% | 78.3% |
| Language other than English: | 7,413 | 53.3% | 21.5% |
| By language: | -- | -- | -- |
| Spanish: | 5,029 | 36.2% | 13.3% |
| Other Indo-European languages: | 841 | 6.1% | 3.5% |
| Asian/Pacific Island languages: | 1,382 | 9.9% | 3.5% |
| Other languages: | 161 | 1.2% | 1.0% |
Computers & Internet (20851 zip code)
| Households | Percent% | US AvgUS | |
|---|---|---|---|
| Households with a computer: | 5,081 | 100.0% | 93.1% |
| Households with broadband internet: | 4,892 | 96.3% | 89.4% |
Rockville, MD20851