📍 View location on OpenStreetMap (42.438000, -71.239220)
| Data Metric | Local Statistic |
|---|---|
| Postal / Zip Code | 02421 |
| Primary City | Lexington |
| State / Province | MA |
| County | Middlesex |
| Total Population | 18,080 |
| Population Density | 729.5 people/sq mi |
| Timezone | America/New_York |
| Metric | ZIP 02421 | Middlesex County records | MA records |
|---|---|---|---|
| Population estimate | 18,080 | 1,629,277 (sum) | 7,043,978 (sum) |
| Population Density | 729.5 /sq mi | -- | -- |
| County population rank | #41 of 81 | -- | -- |
| State population rank | #144 of 532 | -- | -- |
Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.
| ZIP Code | City | Distance | Population estimate |
|---|---|---|---|
| ZIP 02420 | Lexington | 1.8 mi | 16,215 |
| ZIP 01731 | Hanscom Afb | 2.8 mi | 2,110 |
| ZIP 02451 | Waltham | 2.9 mi | 17,393 |
| ZIP 02452 | Waltham | 3.2 mi | 15,808 |
| ZIP 02476 | Arlington | 3.6 mi | 17,708 |
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →