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ZIP CODE TABULATION AREA

01431

Massachusetts · 3,211 residents · 23.7 sq mi
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ZIP 01431 is a ZIP code of 3,211 people in Middlesex County. At a median age of 50.5, this is an older place than the country as a whole. Owners hold 95% of the housing stock. The poverty rate is 2.6%, under the national 12.5%. 4% of people in this ZIP code were born outside the United States. Median household income runs $115,598, well clear of the $82,259 US median. Among the 81 ZIP codes in Middlesex County, 01431 ranks 63rd by median household income.

$115,598
US average: $82,259
$57,840
US average: $44,673
$390,500
US average: $376,019
43.7%
US average: 35.6%
Land area
23.7 sq mi
Age, sex & households
Under 18
17.0%
Age 65+
21.5%
49.1%
50.9%
2.54 people
Race & ethnicity · 2024
2024
White, non-Hispanic92.5%(2,970)
Black0%(0)
Hispanic / Latino4.7%(151)
Asian0.2%(5)
Other2.6%(85)
18
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
3.4
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within Middlesex County
Income rank vs other ZIPs
LOWEST63RD OF 81HIGHEST
Adjacent ZIPs
01432$101,966
01450$193,292
01460$149,722
01463$123,911
Frequently asked

How many people live in ZIP code 01431?

ZIP code 01431 has about 3,211 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 01431?

The typical household in ZIP code 01431 earns about $115,598 a year. Half of households make more than that, and half make less.

Is ZIP code 01431 expensive?

In ZIP code 01431, the median home is worth about $390,500, and the typical rent is about $1,200 a month.

How educated are people in ZIP code 01431?

About 43.7% of adults age 25 and over in ZIP code 01431 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 01431?

About 2.6% of people in ZIP code 01431 live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR · ZCTA · UPDATED 2024