Billerica, MA 01821 ZIP Code Profile

Related Place Profiles:
Billerica, MA

ZIP Code 01821: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Billerica, MA 01821

  • ZIP Code Type: STANDARD
  • County: Middlesex County
  • Centroid: Latitude 42.549, Longitude -71.248
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 756
  • PO Box Addresses: 213
  • Residential Addresses: 11,021
    • Multi-Family Addresses: 1,824
    • Single Family Addresses: 9,197

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


01821 ZIP Code Map

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Billerica, MA 01821 Data & Demographics (As of July 1, 2017)


Total Population 32,356
Daytime Population: Workers 16,847
Daytime Population: Residents 14,146
Total Daytime Population (TDP) 30,993
Ratio TDP/Total Population1 0.96
Population in Households 32,298
Population in Familes 28,014
Population in Group Qrtrs 58
Population Density2 1,896
Diversity Index3 28


Median Household Income $95,523
Average Household Income $107,222
Per Capita Income $38,073


Total Housing Units 11,817 (100%)
Owner Occupied HU 9,230 (78.1%)
Renter Occupied HU 2,248 (19.0%)
Vacant Housing Units 339 ( 2.9%)
Median Home Value $364,509
Average Home Value $384,851


Total Households 11,478
Average Household Size 2.81
Family Households 8,566
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.73% 0.8%
Households 0.54% 0.72%
Families 0.49% 0.7%
Median Household Income   1.43%
Per Capita Income   2.2%

Billerica, MA 01821 - Peer Comparisons by Rank and Percentile

The table below compares 01821 to the other 521 ZIP Codes in Massachusetts by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 47 91st
Population Density # 162 69th
Diversity Index # 215 59th
Median Household Income # 135 74th
Per Capita Income # 272 48th

Additional comparisons and rankings can be made with a VERY EASY TO USE Massachusetts Census Data Comparison Tool.

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