Zip Code 02127
South Boston, Massachusetts — Suffolk County
📍 ZIP code 02127 is in South Boston, Suffolk County, Massachusetts.
ZIP code 02127 is located in South Boston, Suffolk County, Massachusetts. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 36,646. The area code for ZIP code 02127 is 617.
Quick Answer
Zip code 02127 is in South Boston, Massachusetts (Suffolk County). It has a population of 36,646, median household income of $156,373, and median home value of $858,600.
Population
36,646
Income
$156,373
Home Value
$858,600
Climate
82°F / 23°F
About Zip Code 02127
Zip code 02127 is located in South Boston, Massachusetts, within Suffolk County. Home to approximately 36,646 residents, this area sits at an elevation of 41 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 617.
The median household income is $156,373 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $858,600, and the cost of living index is 250 (150% 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 2 square miles of land area and 0.6 square miles of water.
Key Statistics
36,646
$156,373
$858,600
Eastern (EST/EDT)
617
41 ft
2 sq mi
32.5
19,495
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Compare With Nearby Zip Codes
| Metric | 02127 | 02210 | 02111 | 02125 | 02118 | 02110 |
|---|---|---|---|---|---|---|
| City | South Boston, MA | Boston, MA | Boston, MA | Roxbury, MA | Boston, MA | Boston, MA |
| Population | 36,646 | 6,554 | 8,067 | 33,069 | 28,522 | 2,178 |
| Median Income | $156,373 | $178,833 | $70,865 | $71,810 | $90,142 | $132,239 |
| Home Value | $858,600 | $1,212,000 | $953,400 | $645,400 | $1,029,100 | $1,104,700 |
| Cost of Living | 250 | 250 | 243 | 170 | 250 | 250 |
| Median Age | 32.5 | 35.4 | 31.3 | 34.4 | 37.9 | 54.6 |
Cost of Living
100 = National Average. South Boston's cost of living is 150% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
5.5x
Demographics
Zip code 02127 has a population of 36,646 people with a median age of 32.5. There are 19,495 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
South Boston (02127) population trend from 2010 to 2024
↓ -7.0%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
82°F
23°F
44 in
49 in
South Boston 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
$858,600
Median Household Income
$156,373
With 19,495 housing units across 2 square miles, 02127 has a housing density of 9,748 units per square mile. The home price-to-income ratio is 5.5x.
Location & Geography
Latitude
42.3350°
Longitude
-71.0391°
Land Area
2 sq mi
Water Area
0.6 sq mi
Nearby Zip Codes
Zip codes closest to 02127 (South Boston, MA) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 02127's $156,373. A way to compare South Boston 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 02127 (South Boston, 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 South Boston, Massachusetts?
South Boston, Massachusetts uses zip code 02127.
What county is zip code 02127 in?
Zip code 02127 is located in Suffolk County, Massachusetts.
What is the population of zip code 02127?
The population of zip code 02127 is 36,646 with a median age of 32.5.
Is 02127 in South Boston, Massachusetts?
Yes, zip code 02127 is in South Boston, Suffolk County, Massachusetts. The area code is 617.
Frequently Asked Questions
What city is zip code 02127 in?
Zip code 02127 is in South Boston, Massachusetts. It is part of Suffolk County and uses the Eastern (EST/EDT) timezone.
What is zip code 02127?
Zip code 02127 is a U.S. postal code in South Boston, Massachusetts (Suffolk County). It has a population of 36,646 and covers 2 square miles.
What is the population of zip code 02127?
The population of zip code 02127 (South Boston, MA) is 36,646 with a median age of 32.5. There are approximately 19,495 housing units in this area.
What is the median income in zip code 02127?
The median household income in zip code 02127 (South Boston, MA) is $156,373 per year. The cost of living index is 250 (100 = national average).
What is the average home price in zip code 02127?
The median home value in zip code 02127 (South Boston, MA) is $858,600. The cost of living index is 250 compared to the national average of 100.
What county is zip code 02127 in?
Zip code 02127 is located in Suffolk County, Massachusetts. The primary city is South Boston.
What is the area code for zip code 02127?
Zip code 02127 in South Boston, MA uses area code 617. It is located in the Eastern (EST/EDT) timezone.
Is zip code 02127 a good place to live?
Zip code 02127 (South Boston, MA) has a cost of living index of 250 (100 = national average), a median household income of $156,373, and median home values of $858,600. The median age is 32.5. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 02127?
The cost of living index for zip code 02127 (South Boston, MA) is 250, where 100 represents the national average. This area is above the national average. Median home value: $858,600.
What schools serve zip code 02127?
Zip code 02127 in South Boston, 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.