21104 ZIP Code
Marriottsville, Maryland
December 15, 2025
| ZIP Code: | 21104 |
| City/Town: | Marriottsville |
| County: | Carroll |
| State: | Maryland |
| ZIP Type: | Standard |
| Population: | 6,077 |
| Median Household Income: | $195,000 |
| Per Capita Income: | $90,556 |
| Total Housing Units: | 2,073 |
| Median Home Value: | $659,400 |
| Land Area: | 17.1 sq miles
44.2 sq km |
| Water Area: | 0.8 sq miles
2.1 sq km |
| Coordinates: | 39.3469, -76.9128 |
Population Information (21104 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total Population: | 6,077 | -- | -- |
| Male: | 3,011 | 49.5% | 49.6% |
| Female: | 3,066 | 50.5% | 50.4% |
| Median Age: | 46.1 yrs | -- | 38.5 yrs |
| Under 5 years: | 279 | 4.6% | 5.7% |
| 5 to 9 years: | 305 | 5.0% | 6.0% |
| 10 to 14 years: | 464 | 7.6% | 6.5% |
| 15 to 19 years: | 365 | 6.0% | 6.6% |
| 20 to 24 years: | 479 | 7.9% | 6.7% |
| 25 to 34 years: | 449 | 7.4% | 13.7% |
| 35 to 44 years: | 663 | 10.9% | 12.9% |
| 45 to 54 years: | 798 | 13.1% | 12.4% |
| 55 to 59 years: | 624 | 10.3% | 6.5% |
| 60 to 64 years: | 490 | 8.1% | 6.4% |
| 65 to 74 years: | 744 | 12.2% | 9.7% |
| 75 to 84 years: | 318 | 5.2% | 4.8% |
| 85 years and over: | 99 | 1.6% | 2.0% |
Housing Information (21104 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Median home value: | $659,400 | -- | $281,900 |
| Median rooms: | 8.3 | -- | 5.5 |
| Median rent: | -- / mo. | -- | $1,268 / mo. |
| Total housing units: | 2,073 | -- | -- |
| Occupied housing units: | 2,026 | 97.7% | 38.0% |
| Vacant housing units: | 47 | 2.3% | 4.6% |
| Housing tenure: | -- | -- | -- |
| Owner-occupied: | 1,924 | 95.0% | 64.8% |
| Renter-occupied: | 102 | 5.0% | 35.2% |
Educational Attainment (21104 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Population 25 years and over: | 4,185 | -- | -- |
| Less than 9th grade: | 106 | 2.5% | 4.7% |
| 9th to 12th grade, no diploma: | 15 | 0.4% | 6.1% |
| High school graduate: | 824 | 19.7% | 26.4% |
| Some college, no degree: | 693 | 16.6% | 19.7% |
| Associate degree: | 145 | 3.5% | 8.7% |
| Bachelor's degree: | 1,522 | 36.4% | 20.9% |
| Graduate or professional degree: | 880 | 21.0% | 13.7% |
| Percent high school graduate or higher: | -- | 97.1% | 89.1% |
| Percent bachelor's degree or higher: | -- | 57.4% | 34.3% |
Income Information (21104 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median household income: | $195,000 / yr. | $75,149 / yr. |
| Mean household income: | $205,980 / yr. | $105,833 / yr. |
| Median family income: | $216,620 / yr. | $92,646 / yr. |
| Per capita income: | $90,556 / yr. | $41,261 / yr. |
Employment (21104 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| In labor force: | 3,250 | -- | 63.5% |
| Employed: | 3,194 | 98.5% | 96.4% |
| Unemployed: | 48 | 1.5% | 5.3% |
| Not in labor force: | 1,709 | -- | -- |
| Class of Worker: | -- | -- | -- |
| Private wage and salary: | 2,493 | 78.1% | 79.7% |
| Government workers: | 567 | 17.8% | 14.2% |
| Self-employed: | 126 | 3.9% | 5.9% |
| Unpaid family workers: | 8 | 0.3% | 0.1% |
Race & Ethnicity (21104 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Race (one race): | -- | -- | -- |
| White: | 4,707 | 77.5% | 61.6% |
| Black or African American: | 335 | 5.5% | 12.4% |
| American Indian/Alaska Native: | 0 | 0.0% | 1.1% |
| Asian: | 650 | 10.7% | 6.0% |
| Native Hawaiian/Pacific Islander: | 0 | 0.0% | 0.2% |
| Some other race: | 40 | 0.7% | 8.4% |
| Two or more races: | 345 | 5.7% | 10.2% |
| Hispanic or Latino (any race): | 249 | 4.1% | 18.7% |
| Mexican: | 185 | 3.0% | 11.2% |
| Puerto Rican: | 42 | 0.7% | 1.8% |
| Cuban: | 24 | 0.4% | 0.7% |
| Other Hispanic or Latino: | 0 | 0.0% | 5.0% |
| Not Hispanic or Latino: | 119 | 2.0% | 81.1% |
Income Distribution (21104 zip code)
| Household Income | Households | Percent% | US AvgUS |
|---|---|---|---|
| Less than $10,000: | 16 | 0.8% | 4.9% |
| $10,000 to $14,999: | 62 | 3.1% | 3.8% |
| $15,000 to $24,999: | 22 | 1.1% | 7.0% |
| $25,000 to $34,999: | 35 | 1.7% | 7.4% |
| $35,000 to $49,999: | 90 | 4.4% | 10.7% |
| $50,000 to $74,999: | 131 | 6.5% | 16.1% |
| $75,000 to $99,999: | 106 | 5.2% | 12.8% |
| $100,000 to $149,999: | 340 | 16.8% | 17.1% |
| $150,000 to $199,999: | 286 | 14.1% | 8.8% |
| $200,000 or more: | 938 | 46.3% | 11.4% |
Commute to Work (21104 zip code)
| Commute Method | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Drove alone: | 2,445 | 76.5% | 67.8% |
| Carpooled: | 103 | 3.2% | 8.7% |
| Public transportation: | 10 | 0.3% | 4.2% |
| Walked: | 8 | 0.3% | 2.5% |
| Other means: | 0 | 0.0% | 0.9% |
| Worked from home: | 521 | 16.3% | 13.8% |
| Mean travel time to work: | 31.5 min | -- | 26.7 min |
Industry (21104 zip code)
| Industry Sector | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Agriculture, forestry, fishing, mining: | 0 | 0.0% | 1.6% |
| Construction: | 138 | 4.3% | 6.9% |
| Manufacturing: | 201 | 6.3% | 10.0% |
| Wholesale trade: | 92 | 2.9% | 2.4% |
| Retail trade: | 161 | 5.0% | 11.0% |
| Transportation, warehousing, utilities: | 137 | 4.3% | 5.8% |
| Information: | 56 | 1.8% | 1.9% |
| Finance, insurance, real estate: | 314 | 9.8% | 6.7% |
| Professional, scientific, management: | 554 | 17.3% | 12.1% |
| Education, health care, social services: | 884 | 27.7% | 23.3% |
| Arts, entertainment, food services: | 285 | 8.9% | 9.0% |
| Other services: | 121 | 3.8% | 4.7% |
| Public administration: | 251 | 7.9% | 4.7% |
Poverty Status (21104 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Poverty Rate: | -- | 2.3% | 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 (21104 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| With health insurance: | 5,839 | 96.1% | 91.3% |
| Private health insurance: | 5,480 | 90.2% | 67.6% |
| Public health coverage: | 1,451 | 23.9% | 35.9% |
| Without health insurance: | 208 | 3.4% | 8.7% |
Benefits & Assistance (21104 zip code)
| Households with: | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Earnings: | 1,678 | 82.8% | 77.4% |
| Social Security income: | 624 | 30.8% | 31.0% |
| Retirement income: | 559 | 27.6% | 21.8% |
| Supplemental Security Income (SSI): | 44 | 2.2% | 4.5% |
| Cash public assistance income: | 7 | 0.3% | 1.8% |
| SNAP (food stamps) benefits: | 14 | 0.7% | 11.4% |
Housing Types (21104 zip code)
| Structure Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| 1-unit, detached: | 1,816 | 87.6% | 61.4% |
| 1-unit, attached: | 207 | 10.0% | 6.1% |
| 2 units: | 0 | 0.0% | 3.4% |
| 3 or 4 units: | 0 | 0.0% | 4.3% |
| 5 to 9 units: | 0 | 0.0% | 4.6% |
| 10 to 19 units: | 50 | 2.4% | 4.3% |
| 20 or more units: | 0 | 0.0% | 9.9% |
| Mobile home: | 0 | 0.0% | 5.8% |
| Boat, RV, van, etc.: | 0 | 0.0% | 0.1% |
Year Structure Built (21104 zip code)
| Year Built | Units | Percent% | US AvgUS |
|---|---|---|---|
| Built 2020 or later: | 18 | 0.9% | 0.6% |
| Built 2010 to 2019: | 420 | 20.3% | 8.2% |
| Built 2000 to 2009: | 364 | 17.6% | 13.5% |
| Built 1990 to 1999: | 436 | 21.0% | 13.2% |
| Built 1980 to 1989: | 338 | 16.3% | 13.2% |
| Built 1970 to 1979: | 350 | 16.9% | 14.6% |
| Built 1960 to 1969: | 52 | 2.5% | 10.2% |
| Built 1950 to 1959: | 43 | 2.1% | 9.9% |
| Built 1940 to 1949: | 6 | 0.3% | 4.6% |
| Built 1939 or earlier: | 46 | 2.2% | 12.0% |
Bedrooms (21104 zip code)
| Number of Bedrooms | Units | Percent% | US AvgUS |
|---|---|---|---|
| No bedroom (studio): | 0 | 0.0% | 2.4% |
| 1 bedroom: | 0 | 0.0% | 3.0% |
| 2 bedrooms: | 100 | 4.8% | 9.1% |
| 3 bedrooms: | 746 | 36.0% | 15.9% |
| 4 bedrooms: | 884 | 42.6% | 18.8% |
| 5 or more bedrooms: | 343 | 16.5% | 17.6% |
Heating Fuel (21104 zip code)
| Fuel Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| Utility gas: | 707 | 34.9% | 47.1% |
| Bottled, tank, or LP gas: | 148 | 7.3% | 4.9% |
| Electricity: | 767 | 37.9% | 40.2% |
| Fuel oil, kerosene, etc.: | 247 | 12.2% | 4.2% |
| Coal or coke: | 0 | 0.0% | 0.1% |
| Wood: | 81 | 4.0% | 1.5% |
| Solar energy: | 0 | 0.0% | 0.1% |
| Other fuel: | 14 | 0.7% | 0.5% |
| No fuel used: | 62 | 3.1% | 0.2% |
Vehicles Available (21104 zip code)
| Vehicles | Households | Percent% | US AvgUS |
|---|---|---|---|
| No vehicle available: | 13 | 0.6% | 8.3% |
| 1 vehicle available: | 276 | 13.6% | 32.6% |
| 2 vehicles available: | 813 | 40.1% | 37.0% |
| 3 or more vehicles available: | 924 | 45.6% | 22.1% |
Home Value Distribution (21104 zip code)
| Value Range | Owner Units | Percent% | US AvgUS |
|---|---|---|---|
| Less than $50,000: | 0 | 0.0% | 5.7% |
| $50,000 to $99,999: | 0 | 0.0% | 7.8% |
| $100,000 to $149,999: | 24 | 1.2% | 9.2% |
| $150,000 to $199,999: | 0 | 0.0% | 10.8% |
| $200,000 to $299,999: | 16 | 0.8% | 19.9% |
| $300,000 to $499,999: | 364 | 18.9% | 24.1% |
| $500,000 to $999,999: | 1,433 | 74.5% | 17.0% |
| $1,000,000 or more: | 87 | 4.5% | 5.6% |
Housing Costs (21104 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median owner costs (with mortgage): | $3,163 / mo. | $1,828 / mo. |
| Median owner costs (no mortgage): | $900 / mo. | $584 / mo. |
| Median gross rent: | -- / mo. | $1,268 / mo. |
| Average household size (owner-occupied): | 3.05 | 2.53 |
| Average household size (renter-occupied): | 1.80 | 2.38 |
Households (21104 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total households: | 2,026 | -- | -- |
| Married-couple households: | 1,442 | 71.2% | 47.5% |
| Cohabiting couple households: | 645 | 31.8% | 7.0% |
| Male householder, no spouse: | 60 | 3.0% | 5.4% |
| Female householder, no spouse: | 439 | 21.7% | 12.7% |
| Householder living alone: | 704 | 34.7% | 28.6% |
| 65 years and over living alone: | 774 | 38.2% | 11.8% |
| Average household size: | 2.98 | -- | 2.53 |
| Average family size: | 3.27 | -- | -- |
Marital Status (21104 zip code)
| Population 15 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 2,432 | -- | -- |
| Never married: | 602 | 24.8% | 37.0% |
| Now married: | 1,597 | 65.7% | 49.5% |
| Separated: | 19 | 0.8% | 1.5% |
| Widowed: | 214 | 8.8% | 2.6% |
| Divorced: | 630 | 25.9% | 9.3% |
School Enrollment (21104 zip code)
| Population 3 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Enrolled in school: | 1,498 | -- | -- |
| Nursery school, preschool: | 124 | 8.3% | 5.8% |
| Kindergarten: | 36 | 2.4% | 5.0% |
| Elementary school (grades 1-8): | 631 | 42.1% | 40.5% |
| High school (grades 9-12): | 329 | 22.0% | 21.4% |
| College or graduate school: | 378 | 25.2% | 27.3% |
Veterans & Disability (21104 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Civilian population 18 years and over: | 4,765 | -- | -- |
| Veterans: | 295 | 6.2% | 6.3% |
| Civilian noninstitutionalized population: | 6,047 | -- | -- |
| With a disability: | 437 | 7.2% | 13.4% |
| Under 18 with disability: | 56 | 12.8% | 5.8% |
| 18 to 64 with disability: | 206 | 47.1% | 10.4% |
| 65 and over with disability: | 175 | 40.0% | 33.4% |
Mobility (Residence 1 Year Ago) (21104 zip code)
| Population 1 year and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Same house: | 5,476 | 90.1% | 86.9% |
| Different house: | 545 | 9.0% | 13.1% |
| Same county: | 272 | 49.9% | 7.0% |
| Different county: | 253 | 46.4% | 3.2% |
| Different state: | 8 | 1.5% | 2.5% |
| Abroad: | 20 | 3.7% | 0.4% |
Place of Birth (21104 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Native born: | 5,308 | 87.3% | 86.2% |
| Foreign born: | 105 | 1.7% | 13.9% |
| Naturalized citizen: | 769 | 732.4% | 52.7% |
| Not a citizen: | 769 | 732.4% | 47.3% |
| Foreign-born by region: | -- | -- | -- |
| Europe: | 769 | 732.4% | 10.5% |
| Asia: | 53 | 50.5% | 31.3% |
| Africa: | 86 | 81.9% | 5.5% |
| Oceania: | 0 | 0.0% | 0.5% |
| Latin America: | 63 | 60.0% | 50.0% |
| Northern America: | 0 | 0.0% | 2.2% |
Language Spoken at Home (21104 zip code)
| Population 5 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 5,798 | -- | -- |
| English only: | 4,876 | 84.1% | 78.3% |
| Language other than English: | 922 | 15.9% | 21.5% |
| By language: | -- | -- | -- |
| Spanish: | 47 | 0.8% | 13.3% |
| Other Indo-European languages: | 214 | 3.7% | 3.5% |
| Asian/Pacific Island languages: | 597 | 10.3% | 3.5% |
| Other languages: | 64 | 1.1% | 1.0% |
Computers & Internet (21104 zip code)
| Households | Percent% | US AvgUS | |
|---|---|---|---|
| Households with a computer: | 2,026 | 100.0% | 93.1% |
| Households with broadband internet: | 1,959 | 96.7% | 89.4% |
Marriottsville, MD21104