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The 01821 ZIP Code is centered1 in Middlesex County at latitude 42.549 and longitude -71.248. It is a standard type ZIP Code. Middlesex County is in the Eastern Time Zone (UTC -5 hours) and observes daylight savings time. The population in ZIP Code Tabulation Area (ZCTA) 01821 was 29,408 with 10,065 housing units; a land area land area of 17.21 sq. miles; a water area of 0.3 sq. miles; and a population density of 1,708.88 people per sq. mile for Census 2000. Demographic Profile |
Billerica, MA 01821 Map (Marker is ZIP Code Centroid)
Local Search, 01821 ZIP Code| Distance & Driving Directions
Nearby Cities, Towns & Census Designated Places
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The Pines, MA
(1.4 miles ESE) Nutting Lake, MA (1.4 miles SW) Billerica, MA (1.4 miles WNW) Pinehurst, MA (1.9 miles SE) Pattenville, MA (2.4 miles NNE) |
Bedford Springs, MA
(2.4 miles SSW) East Billerica, MA (2.4 miles NNE) River Pines, MA (2.4 miles WNW) South Billerica, MA (2.4 miles SW) Rio Vista, MA (3.1 miles W) |
Nearby Neighborhoods, Subdivisions & Other Small Populated Places
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Fox Hill, MA
(3.1 miles ESE) Chelmsford Center, MA (3.9 miles NE) Shaker Glen, MA (7 miles SSE) Fuller Heights, MA (7.4 miles SSE) Plain, MA (7.7 miles SW) |
Princeton Village, MA
(7.9 miles NW) Idylwide, MA (8 miles S) Sutherland Woods, MA (9.1 miles SSE) Village of Nagog Woods, MA (9.5 miles WSW) Haywardville, MA (9.9 miles SE) |
ZIP Codes - Key Concepts
- ZIP Codes are categories for grouping mailing addresses and are not exact geographic regions.
- The centroid of a ZIP Code may be in one County and the associated city/town in another.
- In rural areas, a single ZIP Code may be used for cities and towns in several different Counties.
- ZIP Code "areas" can overlap, be subsets of each other, or be artificial constructs with no geographic area.
- ZIP Codes are only loosely tied to cities.
1 Keeping the above key concepts in mind, what we informally refer to as the "center" of a ZIP Code is most often actually the centroid of a polygon.
