ZIP Code 1821

Zip Code: 1821
Official USPS city name: Billerica
Official USPS State Code: MA
Official State Name: Massachusetts
ZCTA: TRUE
Population: 32797.0
Density: 764.4
Primary Official County Code: 25017
Primary Official County Name: Middlesex
Official County Name: Middlesex
Official County Code: 25017
Imprecise: FALSE
Military: FALSE
Timezone: America/New_York (00:06 AM Friday, January 31 2025-01-31 (GMT -0500))
Geo Point: 42.55016, -71.25217

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