ZIP Code 01821, Massachusetts
ZIP Code 01821 profile, demographic data, and geographic information.
ZCTA5 01821 is a 5-digit ZIP Code area located in Middlesex County, Massachusetts. As of official census estimates, it has a reported population of 30,143. The land area covers 16.59 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 30,143 | ±1,109 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 44.3 yrs | ±1.9 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 11,312 | ±509 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 11,430 | ±513 |
| Occupied Housing Units | 11,312 | ±509 |
| Vacant Housing Units | 118 | ±98 |
| Median Home Value | $615,100 | ±$13,435 |
| Median Gross Rent | $2,346 | ±$264 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $149,042 | ±$10,391 |
| Per Capita Income | $61,572 | ±$3,748 |
| Poverty Rate | 5.3% | ±1.7% |
| Population Below Poverty Level | 1,578 | ±524 |
| Unemployment Rate | 3% | ±1.2% |
| Civilian Labor Force, Employed | 17,865 | ±847 |
| Broadband Internet Rate | 95.7% | ±2.3% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | KG-05 | Lynn, MA | |
| Regular School Nearby | KG-05 | Revere, MA | |
| Regular School Nearby | 03-05 | Westford, MA | |
| Regular School Nearby | PK-04 | Lowell, MA | |
| Regular School Nearby | PK-05 | Revere, MA | |
| Regular School Nearby | 09-12 | Acton, MA | |
| Regular School Nearby | PK-06 | East Boston, MA | |
| Regular School Nearby | PK | Everett, MA | |
| Regular School Nearby | PK-08 | Somerville, MA | |
| Regular School Nearby | PK-05 | Concord, MA |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Shawsheen Valley School of Practical Nursing
|
College Vocational | 1.7 mi away | 100 Cook St, Billerica, MA, 01821-5499 |
9786713646
|
|
BILLERICA PUBLIC LIBRARY
|
Library | 1.1 mi away | 15 CONCORD RD., BILLERICA, MA, 01821 |
(978) 671-0948
|
|
Middlesex Community College
|
College | 2.1 mi away | 591 Springs Rd, Bedford, MA, 01730-9124 |
8008183434
|
|
TEWKSBURY PUBLIC LIBRARY
|
Library | 4.2 mi away | 300 CHANDLER STREET, TEWKSBURY, MA, 01876 |
(978) 640-4490
|
|
EINE Inc
|
College Vocational | 3.7 mi away | 1501 Main St, Ste 50, Tewksbury, MA, 01876 |
9788514444
|
|
BURLINGTON PUBLIC LIBRARY
|
Library | 4.2 mi away | 22 SEARS STREET, BURLINGTON, MA, 01803 |
(781) 270-1690
|
|
Catherine Hinds Institute of Esthetics
|
College Vocational | 7.0 mi away | 300 Wildwood Avenue, Woburn, MA, 01801-6819 |
7819353344244
|
|
BEDFORD FREE PUBLIC LIBRARY
|
Library | 4.3 mi away | 7 MUDGE WAY, BEDFORD, MA, 01730 |
(781) 275-9440
|
|
Lowell Academy Hairstyling Institute
|
College Vocational | 7.1 mi away | 136 Central St, Lowell, MA, 01852-1909 |
9784533235
|
|
WILMINGTON MEMORIAL LIBRARY
|
Library | 4.5 mi away | 175 MIDDLESEX AVE., WILMINGTON, MA, 01887 |
(978) 658-2967
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at BEDFORD, MA US, located 4.8 miles from ZCTA5 01821. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 35.8° | 17.7° | 26.8° | 3.75" | 16.1" |
| February | 38.7° | 18.9° | 28.8° | 3.37" | 12.5" |
| March | 46.6° | 26.7° | 36.6° | 4.80" | 12.9" |
| April | 58.9° | 36.3° | 47.6° | 3.90" | 2.3" |
| May | 69.8° | 45.9° | 57.8° | 3.76" | 0.0" |
| June | 77.9° | 55.4° | 66.6° | 4.10" | 0.0" |
| July | 83.8° | 61.4° | 72.6° | 3.79" | 0.0" |
| August | 81.9° | 60.0° | 70.9° | 3.94" | 0.0" |
| September | 74.1° | 51.8° | 63.0° | 3.72" | 0.0" |
| October | 62.2° | 40.5° | 51.4° | 4.85" | 0.1" |
| November | 51.3° | 31.4° | 41.4° | 4.11" | 1.9" |
| December | 40.8° | 23.3° | 32.0° | 4.79" | 13.2" |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Pinehurst CDP | CDP | 1.4 mi | — |
| Burlington CDP | CDP | 4.1 mi | — |
| Wilmington CDP | CDP | 4.6 mi | — |
| Hanscom AFB CDP | CDP | 6.4 mi | — |
| Woburn city | City | 6.5 mi | — |
| Lowell city | City | 7.1 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 01821. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.