Residential delivery area · Massachusetts
ZIP Code 02129: Charlestown, MA
ZIP code 02129 uses the postal name Charlestown, Massachusetts and lies entirely in Suffolk County (Census 2020 ZIP-county file). About 20,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $157,247 (Census Bureau, ACS 2020-2024). Most of its land (100%) lies in the city of Boston.
- ACS2020-24
- Census2020
- FHFA2022
- ZBP2023
- IRS2022
- Town
- Charlestown · its only residential ZIP
- County
- Suffolk County
- Census places
- Boston
- Metro area
- Boston-Cambridge-Newton, MA-NH
- House district
- MA-7 119th Congress
- State
- Massachusetts
- Time zone
- Eastern
- Land area
- 1.4 sq mi · 14,806 people per sq mi
Where is ZIP code 02129?
02129 centers on 42.380°, -71.061° and covers 1.4 square miles of land plus 0.5 of water. It borders 8 ZIP codes: 02109, 02114, 02141, 02145, 02143, 02149, 02150, 02128.
The map draws ZIP code areas only. For the streets inside 02129, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 02129 compare with the rest of Suffolk County?
| Measure | 02129 | In Suffolk County | In MA |
|---|---|---|---|
| People (ACS 2020-2024) | 20,032 | 22nd of 37 | 127th of 539 |
| Median household income | $157k | 5th of 29 | 63rd of 406 |
| Median home value | $912k | 10th of 30 | 57th of 449 |
Its median household income is higher than in 97% of U.S. residential ZIP codes, and it is denser than 99% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 02129?
The 2020 Census counted 19,120 people in 02129; the ACS, which samples households over 2020-2024, estimates 20,032. Between the 2010 and 2020 censuses its population grew 16.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 20,032
- 2020 Census count
- 19,120+16.3% since 2010 (16,439)
- Households
- 9,606
- Median age
- 35.6
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 02129?
Of the 20,032 people the ACS estimates in 02129, 19.7% are under 18 and 14.1% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (70.3%).
- Under 1819.7%
- 18 to 6466.1%
- 65 and older14.1%
- White, not Hispanic70.3%
- Hispanic or Latino9.5%
- Asian, not Hispanic8.3%
- Other or two or more6.1%
- Black, not Hispanic5.8%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 02129 earn?
Median household income is $157,247 (ACS 2020-2024), the 5th highest of the 29 ranked ZIP codes in Suffolk County. It is not measurably different from 2015-2019 ($157,549 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $157,247
- Income per person
- $100,420
- Below the poverty line
- 8.8%
- Unemployed (of the labor force)
- 3.6%
- Adults 25+ with a bachelor's degree
- 71.2%
- Adjusted gross income per tax return, 2022
- $190,1589,750 returns; wages 76% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 02129?
- Median home value (owners' estimate)
- $912,000
- Median gross rent
- $2,259
- Homes owned by their occupants
- 50.5%
- Housing units
- 10,107
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 02129?
536 business establishments had a location in this ZIP code in 2023, 13 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services113
- Other services (except public administration)61
- Real estate and rental and leasing49
- Health care and social assistance44
- Retail trade41
- Accommodation and food services40
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 02129?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 02109 | Boston | 3,612 | $159k | 1.0 mi |
| 02114 | Boston | 14,418 | $132k | 1.1 mi |
| 02141 | Cambridge | 14,517 | $127k | 1.3 mi |
| 02145 | Somerville | 27,495 | $124k | 1.7 mi |
| 02143 | Somerville | 25,513 | $131k | 1.8 mi |
| 02149 | Everett | 50,045 | $85k | 1.8 mi |
| 02150 | Chelsea | 39,908 | $72k | 1.9 mi |
| 02128 | East Boston | 43,345 | $90k | 3.0 mi |
| 02113 | Boston | 6,385 | $113k | 1.0 mi (near) |
| 02203 | Boston | 0 | – | 1.3 mi (near) |
| 02133 | Boston | 62 | – | 1.5 mi (near) |
| 02110 | Boston | 2,342 | $138k | 1.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.