South Boston, MA

Single-footprint Census roll-up for South Boston, MA: 1 USPS ZIP, population 31,799. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet SOUTH-BOSTON-MA · South Boston, MA 1 ZIPs · 31,799 pop · #567/25278 · Suffolk County

INC-TOP · RANK-TOP · ABOVE-PEER · BOOK-ONE · OWN-LOW · POP-SMALL · SPREAD-UNK · HOME-TOP

  • INC-TOP $164,387
  • RANK-TOP #567/25278
  • ABOVE-PEER over West Roxbury
  • BOOK-ONE 1 ZIP
  • OWN-LOW 45% owners
  • POP-SMALL 31,799
  • SPREAD-UNK Single-ZIP book
  • HOME-TOP $863,700

Nearest income peer: West Roxbury, MA ( $25,663 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around South Boston

Lowest/highest poles plus county-sharing cities nearest South Boston on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, South Boston, MA sits among US cities with a top-decile household income, on a small-city population base, across a single-ZIP footprint.

Top 2%
household income vs 25,278 US cities
31,799
city population (Census)
1
USPS ZIP codes covered
$164,387
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

High-income footprint on only 1 ZIP: the city page and the ZIP page nearly coincide. Headline income $164,387 and home value $863,700 should be read as near-neighborhood numbers ; bachelor's attainment averages 69.8%.

Owner-occupancy is comparatively low (45.3%) for this income tier, rent $2,736 may matter more than the home-value average.

Within Massachusetts, Devens is the closest lower-income city and Reading the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for South Boston.

Population concentration

One ZIP, 02127, is all of South Boston

There is no split to weigh here: 02127 holds every one of South Boston's 31,799 ACS residents. City-level and ZIP-level numbers on this site are the same number twice, check the ZIP page for the income/tenure/commute breakdown.

Census ZBP business roll-up

Mid-pack ZBP load on South Boston's one ZIP

Citywide ZBP: 707 establishments, 10,661 employees , annual payroll $852,210k (~22 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 02127 (707 units) ; leading NAICS Professional, scientific, and technical services (100) · also Accommodation and food services · Other services (except public administration) .

View your shortlist →

ZIP Codes in South Boston, MA

These ZIP codes sit in Suffolk County, which covers 33 ZIP codes in all; 1 of them fall in South Boston. See the Suffolk County roll-up →

No other city sharing Suffolk County reports a higher average ZIP median income than South Boston. Boston, Dorchester and Revere sit below it, so a household comparing this county on income alone starts here. Mattapan marks the far end of that range at $65,709, 60% below South Boston.

ZIP Code Population Median income Establishments Density
02127 31,799 $164,387 707 6,069

South Boston roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving South Boston, .