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ZIP CODE TABULATION AREA

02421

Massachusetts · 18,080 residents · 9.57 sq mi
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ZIP 02421 is home to 18,080 people in Middlesex County. The median household earns $227,813, about 177% above the national median. 83% of adults hold a bachelor's degree, against 36% nationally. Median home value sits at $1,205,700. Households here earn about 74% more than in Middlesex County as a whole. At a median age of 48.2, this is an older place than the country as a whole. Among the 81 ZIP codes in Middlesex County, 02421 ranks 8th by median household income.

$227,813
US average: $82,259
$112,662
US average: $44,673
$1,205,700
US average: $376,019
83.2%
US average: 35.6%
Land area
9.57 sq mi
Age, sex & households
Under 18
25.4%
Age 65+
22.8%
47.7%
52.3%
2.61 people
Race & ethnicity · 2024
2024
White, non-Hispanic54.6%(9,867)
Black1.4%(246)
Hispanic / Latino3%(536)
Asian35.7%(6,455)
Other5.4%(976)
71
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
5.3
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
LOWEST8TH OF 81HIGHEST
Adjacent ZIPs
01431$115,598
01432$101,966
01450$193,292
01460$149,722
Frequently asked

How many people live in ZIP code 02421?

ZIP code 02421 has about 18,080 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 02421?

The typical household in ZIP code 02421 earns about $227,813 a year. Half of households make more than that, and half make less.

Is ZIP code 02421 expensive?

In ZIP code 02421, the median home is worth about $1,205,700, and the typical rent is about $2,948 a month.

How educated are people in ZIP code 02421?

About 83.2% of adults age 25 and over in ZIP code 02421 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 02421?

About 6.4% of people in ZIP code 02421 live below the federal poverty line.

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