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ZIP Code 02421
Lexington, MA, Middlesex County
Population
18,080
Land area
9.6sq mi
People per sq mi
1,889
City
Lexington
ZIP 02421 and nearby ZIP codes
ZIP 02421 at a glance
- ZIP 02421 (Lexington) is about 2.1 times as dense as Massachusetts as a whole.
- Households here earn a median of $227,813 a year, about 2.2 times the Massachusetts figure of $103,960.
- A typical owner-occupied home is valued at $1,205,700 (about 2.1 times the Massachusetts figure) and median rent is $2,948 a month.
Local data for ZIP 02421
Counts from official public data
Housing and community stats
ZIP 02421, American Community Survey 2020-2024
Median household income
$227,813
Poverty rate
6.4%
Median home value
$1,205,700
Prices -6.5% in a year
Median rent
$2,948/mo
Homeownership
75.9%
Bachelor's or higher
83.2%
Median age
48.2
Average commute
31.4 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
582
ZIP Business Patterns 2023
Employees
20,781
$3.5B annual payroll
PPP loans
$96M
609 loans
Campaign donations
$4.5M
43% D, 1% R, 2026 cycle
Environment and hazard risk
ZIP 02421, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: ice storm
Storm events since 1996
1,840
Countywide, mostly thunderstorm wind
Flood insurance policies
4,000
1.0% of homes, county
July high / Jan low
85° / 18°F
42.6 inches of rain a year
Health statistics
Share of adults in ZIP 02421, CDC PLACES estimates
Obesity
19.6%
U.S. 33.3% -13.7 pts
Diabetes
9.1%
U.S. 12.1% -3.0 pts
Smoking
5.8%
U.S. 12.8% -7.0 pts
Uninsured (18-64)
2.2%
U.S. 11.1% -8.9 pts
Frequently asked questions
- What city is ZIP code 02421?
- ZIP code 02421 is in Lexington, MA (Middlesex County).
- What county is ZIP code 02421 in?
- ZIP code 02421 is mostly in Middlesex County, Massachusetts.
- How many people live in ZIP code 02421?
- About 18,080 people live in the 02421 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.