Zip Code 02128
Chelsea, Massachusetts — Suffolk County
📍 ZIP code 02128 is in Chelsea, Suffolk County, Massachusetts.
ZIP code 02128 is located in Chelsea, Suffolk County, Massachusetts. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 44,124. The area code for ZIP code 02128 is 617.
Quick Answer
Zip code 02128 is in Chelsea, Massachusetts (Suffolk County). It has a population of 44,124, median household income of $92,079, and median home value of $680,000.
Population
44,124
Income
$92,079
Home Value
$680,000
Climate
82°F / 23°F
About Zip Code 02128
Zip code 02128 is located in Chelsea, Massachusetts, within Suffolk County. Home to approximately 44,124 residents, this area sits at an elevation of 13 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 617.
The median household income is $92,079 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $680,000, and the cost of living index is 185 (85% above the national average of 100).
Summers average a high of 82°F while winters drop to 23°F. The area receives about 44 in of rain and 49 in of snow annually. The zip code covers 4.9 square miles of land area and 1.1 square miles of water.
Key Statistics
44,124
$92,079
$680,000
Eastern (EST/EDT)
617
13 ft
4.9 sq mi
34.9
19,124
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Compare With Nearby Zip Codes
| Metric | 02128 | 02152 | 02210 | 02110 | 02109 | 02127 |
|---|---|---|---|---|---|---|
| City | Chelsea, MA | Chelsea, MA | Boston, MA | Boston, MA | Boston, MA | South Boston, MA |
| Population | 44,124 | 18,807 | 6,554 | 2,178 | 3,714 | 36,646 |
| Median Income | $92,079 | $106,357 | $178,833 | $132,239 | $177,500 | $156,373 |
| Home Value | $680,000 | $606,900 | $1,212,000 | $1,104,700 | $1,007,200 | $858,600 |
| Cost of Living | 185 | 173 | 250 | 250 | 250 | 250 |
| Median Age | 34.9 | 43.6 | 35.4 | 54.6 | 32.7 | 32.5 |
Cost of Living
100 = National Average. Chelsea's cost of living is 85% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
7.4x
Demographics
Zip code 02128 has a population of 44,124 people with a median age of 34.9. There are 19,124 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Chelsea (02128) population trend from 2010 to 2024
↑ 76.3%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
82°F
23°F
44 in
49 in
Chelsea experiences warm summers with average highs around 82°F. Winters are cool with lows averaging 23°F. With 49 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$680,000
Median Household Income
$92,079
With 19,124 housing units across 4.9 square miles, 02128 has a housing density of 3,903 units per square mile. The home price-to-income ratio is 7.4x.
Location & Geography
Latitude
42.3615°
Longitude
-71.0074°
Land Area
4.9 sq mi
Water Area
1.1 sq mi
Nearby Zip Codes
Zip codes closest to 02128 (Chelsea, MA) with distances:
All Zip Codes in Chelsea, MA
Other zip codes serving Chelsea:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 02128's $92,079. A way to compare Chelsea to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 02128 (Chelsea, MA). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Chelsea, Massachusetts?
Chelsea, Massachusetts uses zip code 02128 along with 6 other zip codes.
What county is zip code 02128 in?
Zip code 02128 is located in Suffolk County, Massachusetts.
What is the population of zip code 02128?
The population of zip code 02128 is 44,124 with a median age of 34.9.
Is 02128 in Chelsea, Massachusetts?
Yes, zip code 02128 is in Chelsea, Suffolk County, Massachusetts. The area code is 617.
Frequently Asked Questions
What city is zip code 02128 in?
Zip code 02128 is in Chelsea, Massachusetts. It is part of Suffolk County and uses the Eastern (EST/EDT) timezone.
What is zip code 02128?
Zip code 02128 is a U.S. postal code in Chelsea, Massachusetts (Suffolk County). It has a population of 44,124 and covers 4.9 square miles.
What is the population of zip code 02128?
The population of zip code 02128 (Chelsea, MA) is 44,124 with a median age of 34.9. There are approximately 19,124 housing units in this area.
What is the median income in zip code 02128?
The median household income in zip code 02128 (Chelsea, MA) is $92,079 per year. The cost of living index is 185 (100 = national average).
What is the average home price in zip code 02128?
The median home value in zip code 02128 (Chelsea, MA) is $680,000. The cost of living index is 185 compared to the national average of 100.
What county is zip code 02128 in?
Zip code 02128 is located in Suffolk County, Massachusetts. The primary city is Chelsea.
What is the area code for zip code 02128?
Zip code 02128 in Chelsea, MA uses area code 617. It is located in the Eastern (EST/EDT) timezone.
Is zip code 02128 a good place to live?
Zip code 02128 (Chelsea, MA) has a cost of living index of 185 (100 = national average), a median household income of $92,079, and median home values of $680,000. The median age is 34.9. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 02128?
The cost of living index for zip code 02128 (Chelsea, MA) is 185, where 100 represents the national average. This area is above the national average. Median home value: $680,000.
What schools serve zip code 02128?
Zip code 02128 in Chelsea, Massachusetts is served by the local school district of Suffolk County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.