01821 ZIP Code
Billerica, Massachusetts
January 21, 2026
| ZIP Code: | 01821 |
| City/Town: | Billerica |
| County: | Middlesex |
| State: | Massachusetts |
| ZIP Type: | Standard |
| Population: | 30,854 |
| Median Household Income: | $138,397 |
| Per Capita Income: | $62,979 |
| Total Housing Units: | 11,723 |
| Median Home Value: | $532,600 |
| Land Area: | 16.6 sq miles
43.0 sq km |
| Water Area: | 0.4 sq miles
1.0 sq km |
| Coordinates: | 42.5493, -71.2517 |
Population Information (01821 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total Population: | 30,854 | -- | -- |
| Male: | 14,968 | 48.5% | 49.6% |
| Female: | 15,886 | 51.5% | 50.4% |
| Median Age: | 43.1 yrs | -- | 38.5 yrs |
| Under 5 years: | 1,527 | 4.9% | 5.7% |
| 5 to 9 years: | 1,428 | 4.6% | 6.0% |
| 10 to 14 years: | 1,707 | 5.5% | 6.5% |
| 15 to 19 years: | 1,834 | 5.9% | 6.6% |
| 20 to 24 years: | 1,828 | 5.9% | 6.7% |
| 25 to 34 years: | 4,233 | 13.7% | 13.7% |
| 35 to 44 years: | 3,838 | 12.4% | 12.9% |
| 45 to 54 years: | 4,608 | 14.9% | 12.4% |
| 55 to 59 years: | 2,463 | 8.0% | 6.5% |
| 60 to 64 years: | 2,411 | 7.8% | 6.4% |
| 65 to 74 years: | 3,075 | 10.0% | 9.7% |
| 75 to 84 years: | 1,496 | 4.8% | 4.8% |
| 85 years and over: | 406 | 1.3% | 2.0% |
Housing Information (01821 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Median home value: | $532,600 | -- | $281,900 |
| Median rooms: | 6.4 | -- | 5.5 |
| Median rent: | $2,104 / mo. | -- | $1,268 / mo. |
| Total housing units: | 11,723 | -- | -- |
| Occupied housing units: | 11,489 | 98.0% | 38.0% |
| Vacant housing units: | 234 | 2.0% | 4.6% |
| Housing tenure: | -- | -- | -- |
| Owner-occupied: | 9,223 | 80.3% | 64.8% |
| Renter-occupied: | 2,266 | 19.7% | 35.2% |
Educational Attainment (01821 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Population 25 years and over: | 22,530 | -- | -- |
| Less than 9th grade: | 427 | 1.9% | 4.7% |
| 9th to 12th grade, no diploma: | 582 | 2.6% | 6.1% |
| High school graduate: | 5,556 | 24.7% | 26.4% |
| Some college, no degree: | 3,851 | 17.1% | 19.7% |
| Associate degree: | 2,384 | 10.6% | 8.7% |
| Bachelor's degree: | 5,741 | 25.5% | 20.9% |
| Graduate or professional degree: | 3,989 | 17.7% | 13.7% |
| Percent high school graduate or higher: | -- | 95.5% | 89.1% |
| Percent bachelor's degree or higher: | -- | 43.2% | 34.3% |
Income Information (01821 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median household income: | $138,397 / yr. | $75,149 / yr. |
| Mean household income: | $150,551 / yr. | $105,833 / yr. |
| Median family income: | $149,241 / yr. | $92,646 / yr. |
| Per capita income: | $62,979 / yr. | $41,261 / yr. |
Employment (01821 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| In labor force: | 19,341 | -- | 63.5% |
| Employed: | 18,727 | 96.9% | 96.4% |
| Unemployed: | 590 | 3.1% | 5.3% |
| Not in labor force: | 6,421 | -- | -- |
| Class of Worker: | -- | -- | -- |
| Private wage and salary: | 15,630 | 83.5% | 79.7% |
| Government workers: | 2,397 | 12.8% | 14.2% |
| Self-employed: | 666 | 3.6% | 5.9% |
| Unpaid family workers: | 34 | 0.2% | 0.1% |
Race & Ethnicity (01821 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Race (one race): | -- | -- | -- |
| White: | 25,029 | 81.1% | 61.6% |
| Black or African American: | 1,531 | 5.0% | 12.4% |
| American Indian/Alaska Native: | 0 | 0.0% | 1.1% |
| Asian: | 2,770 | 9.0% | 6.0% |
| Native Hawaiian/Pacific Islander: | 41 | 0.1% | 0.2% |
| Some other race: | 403 | 1.3% | 8.4% |
| Two or more races: | 1,080 | 3.5% | 10.2% |
| Hispanic or Latino (any race): | 1,093 | 3.5% | 18.7% |
| Mexican: | 1,214 | 3.9% | 11.2% |
| Puerto Rican: | 78 | 0.3% | 1.8% |
| Cuban: | 393 | 1.3% | 0.7% |
| Other Hispanic or Latino: | 12 | 0.0% | 5.0% |
| Not Hispanic or Latino: | 731 | 2.4% | 81.1% |
Income Distribution (01821 zip code)
| Household Income | Households | Percent% | US AvgUS |
|---|---|---|---|
| Less than $10,000: | 204 | 1.8% | 4.9% |
| $10,000 to $14,999: | 145 | 1.3% | 3.8% |
| $15,000 to $24,999: | 465 | 4.0% | 7.0% |
| $25,000 to $34,999: | 226 | 2.0% | 7.4% |
| $35,000 to $49,999: | 537 | 4.7% | 10.7% |
| $50,000 to $74,999: | 1,119 | 9.7% | 16.1% |
| $75,000 to $99,999: | 1,358 | 11.8% | 12.8% |
| $100,000 to $149,999: | 2,425 | 21.1% | 17.1% |
| $150,000 to $199,999: | 2,474 | 21.5% | 8.8% |
| $200,000 or more: | 2,536 | 22.1% | 11.4% |
Commute to Work (01821 zip code)
| Commute Method | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Drove alone: | 13,723 | 73.3% | 67.8% |
| Carpooled: | 1,383 | 7.4% | 8.7% |
| Public transportation: | 318 | 1.7% | 4.2% |
| Walked: | 115 | 0.6% | 2.5% |
| Other means: | 165 | 0.9% | 0.9% |
| Worked from home: | 2,793 | 14.9% | 13.8% |
| Mean travel time to work: | 28.0 min | -- | 26.7 min |
Industry (01821 zip code)
| Industry Sector | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Agriculture, forestry, fishing, mining: | 10 | 0.1% | 1.6% |
| Construction: | 1,276 | 6.8% | 6.9% |
| Manufacturing: | 2,499 | 13.3% | 10.0% |
| Wholesale trade: | 293 | 1.6% | 2.4% |
| Retail trade: | 2,098 | 11.2% | 11.0% |
| Transportation, warehousing, utilities: | 693 | 3.7% | 5.8% |
| Information: | 444 | 2.4% | 1.9% |
| Finance, insurance, real estate: | 1,107 | 5.9% | 6.7% |
| Professional, scientific, management: | 3,663 | 19.6% | 12.1% |
| Education, health care, social services: | 4,172 | 22.3% | 23.3% |
| Arts, entertainment, food services: | 961 | 5.1% | 9.0% |
| Other services: | 642 | 3.4% | 4.7% |
| Public administration: | 869 | 4.6% | 4.7% |
Poverty Status (01821 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Poverty Rate: | -- | 3.5% | 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 (01821 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| With health insurance: | 30,392 | 98.5% | 91.3% |
| Private health insurance: | 27,382 | 88.7% | 67.6% |
| Public health coverage: | 8,159 | 26.4% | 35.9% |
| Without health insurance: | 428 | 1.4% | 8.7% |
Benefits & Assistance (01821 zip code)
| Households with: | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Earnings: | 9,992 | 87.0% | 77.4% |
| Social Security income: | 3,199 | 27.8% | 31.0% |
| Retirement income: | 3,049 | 26.5% | 21.8% |
| Supplemental Security Income (SSI): | 339 | 3.0% | 4.5% |
| Cash public assistance income: | 495 | 4.3% | 1.8% |
| SNAP (food stamps) benefits: | 643 | 5.6% | 11.4% |
Housing Types (01821 zip code)
| Structure Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| 1-unit, detached: | 8,684 | 74.1% | 61.4% |
| 1-unit, attached: | 726 | 6.2% | 6.1% |
| 2 units: | 369 | 3.1% | 3.4% |
| 3 or 4 units: | 137 | 1.2% | 4.3% |
| 5 to 9 units: | 120 | 1.0% | 4.6% |
| 10 to 19 units: | 245 | 2.1% | 4.3% |
| 20 or more units: | 1,409 | 12.0% | 9.9% |
| Mobile home: | 33 | 0.3% | 5.8% |
| Boat, RV, van, etc.: | 0 | 0.0% | 0.1% |
Year Structure Built (01821 zip code)
| Year Built | Units | Percent% | US AvgUS |
|---|---|---|---|
| Built 2020 or later: | 46 | 0.4% | 0.6% |
| Built 2010 to 2019: | 553 | 4.7% | 8.2% |
| Built 2000 to 2009: | 1,256 | 10.7% | 13.5% |
| Built 1990 to 1999: | 1,206 | 10.3% | 13.2% |
| Built 1980 to 1989: | 991 | 8.5% | 13.2% |
| Built 1970 to 1979: | 2,207 | 18.8% | 14.6% |
| Built 1960 to 1969: | 2,801 | 23.9% | 10.2% |
| Built 1950 to 1959: | 1,141 | 9.7% | 9.9% |
| Built 1940 to 1949: | 179 | 1.5% | 4.6% |
| Built 1939 or earlier: | 1,343 | 11.5% | 12.0% |
Bedrooms (01821 zip code)
| Number of Bedrooms | Units | Percent% | US AvgUS |
|---|---|---|---|
| No bedroom (studio): | 97 | 0.8% | 2.4% |
| 1 bedroom: | 955 | 8.1% | 3.0% |
| 2 bedrooms: | 2,581 | 22.0% | 9.1% |
| 3 bedrooms: | 5,103 | 43.5% | 15.9% |
| 4 bedrooms: | 2,291 | 19.5% | 18.8% |
| 5 or more bedrooms: | 696 | 5.9% | 17.6% |
Heating Fuel (01821 zip code)
| Fuel Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| Utility gas: | 8,062 | 70.2% | 47.1% |
| Bottled, tank, or LP gas: | 516 | 4.5% | 4.9% |
| Electricity: | 868 | 7.6% | 40.2% |
| Fuel oil, kerosene, etc.: | 1,913 | 16.7% | 4.2% |
| Coal or coke: | 0 | 0.0% | 0.1% |
| Wood: | 48 | 0.4% | 1.5% |
| Solar energy: | 45 | 0.4% | 0.1% |
| Other fuel: | 28 | 0.2% | 0.5% |
| No fuel used: | 9 | 0.1% | 0.2% |
Vehicles Available (01821 zip code)
| Vehicles | Households | Percent% | US AvgUS |
|---|---|---|---|
| No vehicle available: | 420 | 3.7% | 8.3% |
| 1 vehicle available: | 2,757 | 24.0% | 32.6% |
| 2 vehicles available: | 5,225 | 45.5% | 37.0% |
| 3 or more vehicles available: | 3,087 | 26.9% | 22.1% |
Home Value Distribution (01821 zip code)
| Value Range | Owner Units | Percent% | US AvgUS |
|---|---|---|---|
| Less than $50,000: | 265 | 2.9% | 5.7% |
| $50,000 to $99,999: | 44 | 0.5% | 7.8% |
| $100,000 to $149,999: | 112 | 1.2% | 9.2% |
| $150,000 to $199,999: | 43 | 0.5% | 10.8% |
| $200,000 to $299,999: | 273 | 3.0% | 19.9% |
| $300,000 to $499,999: | 3,328 | 36.1% | 24.1% |
| $500,000 to $999,999: | 5,079 | 55.1% | 17.0% |
| $1,000,000 or more: | 79 | 0.9% | 5.6% |
Housing Costs (01821 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median owner costs (with mortgage): | $2,702 / mo. | $1,828 / mo. |
| Median owner costs (no mortgage): | $889 / mo. | $584 / mo. |
| Median gross rent: | $2,104 / mo. | $1,268 / mo. |
| Average household size (owner-occupied): | 2.83 | 2.53 |
| Average household size (renter-occupied): | 2.03 | 2.38 |
Households (01821 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total households: | 11,489 | -- | -- |
| Married-couple households: | 7,103 | 61.8% | 47.5% |
| Cohabiting couple households: | 2,803 | 24.4% | 7.0% |
| Male householder, no spouse: | 1,489 | 13.0% | 5.4% |
| Female householder, no spouse: | 2,131 | 18.5% | 12.7% |
| Householder living alone: | 3,561 | 31.0% | 28.6% |
| 65 years and over living alone: | 3,741 | 32.6% | 11.8% |
| Average household size: | 2.68 | -- | 2.53 |
| Average family size: | 3.10 | -- | -- |
Marital Status (01821 zip code)
| Population 15 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 12,754 | -- | -- |
| Never married: | 3,987 | 31.3% | 37.0% |
| Now married: | 7,503 | 58.8% | 49.5% |
| Separated: | 329 | 2.6% | 1.5% |
| Widowed: | 729 | 5.7% | 2.6% |
| Divorced: | 3,830 | 30.0% | 9.3% |
School Enrollment (01821 zip code)
| Population 3 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Enrolled in school: | 7,001 | -- | -- |
| Nursery school, preschool: | 574 | 8.2% | 5.8% |
| Kindergarten: | 274 | 3.9% | 5.0% |
| Elementary school (grades 1-8): | 2,503 | 35.8% | 40.5% |
| High school (grades 9-12): | 1,606 | 22.9% | 21.4% |
| College or graduate school: | 2,044 | 29.2% | 27.3% |
Veterans & Disability (01821 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Civilian population 18 years and over: | 24,915 | -- | -- |
| Veterans: | 1,509 | 6.1% | 6.3% |
| Civilian noninstitutionalized population: | 30,820 | -- | -- |
| With a disability: | 3,050 | 9.9% | 13.4% |
| Under 18 with disability: | 136 | 4.5% | 5.8% |
| 18 to 64 with disability: | 1,497 | 49.1% | 10.4% |
| 65 and over with disability: | 1,417 | 46.5% | 33.4% |
Mobility (Residence 1 Year Ago) (01821 zip code)
| Population 1 year and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Same house: | 27,645 | 89.6% | 86.9% |
| Different house: | 2,882 | 9.3% | 13.1% |
| Same county: | 1,921 | 66.7% | 7.0% |
| Different county: | 688 | 23.9% | 3.2% |
| Different state: | 360 | 12.5% | 2.5% |
| Abroad: | 273 | 9.5% | 0.4% |
Place of Birth (01821 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Native born: | 26,229 | 85.0% | 86.2% |
| Foreign born: | 293 | 0.9% | 13.9% |
| Naturalized citizen: | 4,625 | 1578.5% | 52.7% |
| Not a citizen: | 4,625 | 1578.5% | 47.3% |
| Foreign-born by region: | -- | -- | -- |
| Europe: | 4,625 | 1578.5% | 10.5% |
| Asia: | 1,065 | 363.5% | 31.3% |
| Africa: | 472 | 161.1% | 5.5% |
| Oceania: | 10 | 3.4% | 0.5% |
| Latin America: | 558 | 190.4% | 50.0% |
| Northern America: | 61 | 20.8% | 2.2% |
Language Spoken at Home (01821 zip code)
| Population 5 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 29,327 | -- | -- |
| English only: | 23,764 | 81.0% | 78.3% |
| Language other than English: | 5,563 | 19.0% | 21.5% |
| By language: | -- | -- | -- |
| Spanish: | 716 | 2.4% | 13.3% |
| Other Indo-European languages: | 2,953 | 10.1% | 3.5% |
| Asian/Pacific Island languages: | 1,309 | 4.5% | 3.5% |
| Other languages: | 585 | 2.0% | 1.0% |
Computers & Internet (01821 zip code)
| Households | Percent% | US AvgUS | |
|---|---|---|---|
| Households with a computer: | 11,489 | 100.0% | 93.1% |
| Households with broadband internet: | 11,069 | 96.3% | 89.4% |
Billerica, MA01821