Zip Code 02129 — Charlestown, MA
02129 is a ZIP Code associated with Charlestown, MA, located within Suffolk. 02129 ranks #20 out of 35 ZIP codes in Suffolk County by population (and #127 out of 539 in MA). The area supports an estimated population of 20,032 residents across Data Pending housing units, with a population density of 5,713.7 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (42.379750, -71.061670)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 02129 |
| Primary City | Charlestown |
| State / Province | MA |
| County | Suffolk |
| Total Population | 20,032 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 5,713.7 people/sq mi |
| Timezone | America/New_York |
How 02129 Compares
| Metric | ZIP 02129 | Suffolk County | MA State Average |
|---|
| Population | 20,032 | 780,506 (Total) | 7,043,978 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 5,713.7 /sq mi | -- | -- |
| County Pop Rank | #20 of 35 | -- | -- |
Nearby ZIP Codes
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 →