ZIP code 01821 — Billerica

Postal code

01821Copy

Single source Value from one source, not cross-checked.

City

Billerica

County

Middlesex FIPS 25017

State

Massachusetts

Country

United States

Coordinates

42.5519, -71.2518 — precision precise (locality)
View on OpenStreetMap

Population

30,203 (ZCTA, ACS 5-year)

Population density

1,820 / sq mi

Land area

16.6 sq mi (43 km²) (ZCTA, ACS 5-year)

Median household income

$142,564

Per-capita income

$59,108

Median age

44.6

Households

11,511

Housing units

11,666

Median home value

$581,300

Median gross rent

$2,211 / month

Congressional districts

MA-6 (also MA-3) (119th Congress)

USDA hardiness zone

6b (-5 to 0 °F)

Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.

Time zone

America/New_York (UTC−5 / UTC−4 DST)

Area codes

978, 508

Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Tools: compare 01821 with another ZIP · ZIPs within 25 miles · distance from 01821