119th Congress · MA-4
Massachusetts's 4th Congressional District
Massachusetts's 4th Congressional District (MA-4) has a population of 781,422. The median household income is $113,712 and the median age is 40.9.
781,422
Population
1162
People / sq mi
$113,712
Median Income
40.9
Median Age
MA-4 covers 672 sq mi of land at 1162.5 people per square mile.
Race & Ethnicity
| White | 79.3% |
| Black or African American | 3.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.0% |
Economy & Income
$113,712
Median Household Income
$62,795
Per Capita Income
5.6%
Poverty Rate
3.3%
Unemployment
Housing
$545,500
Median Home Value
$1,538
Median Rent
67.9%
Homeownership
Education
91.9%
High School+
49.5%
Bachelor's+
Other Massachusetts Congressional Districts
Largest cities in Massachusetts
Largest counties in Massachusetts
State rankings
Frequently Asked Questions
Massachusetts's 4th Congressional District (MA-4) has a population of 781,422 according to the latest Census ACS 5-Year estimates. Each US Congressional District is drawn to be roughly equal in population (~760K people).
The median household income in Massachusetts's 4th Congressional District is $113,712, with a per capita income of $62,795.
Massachusetts's 4th Congressional District is 79.3% White, 3.5% Black, 0.0% Asian, and 1.0% Hispanic or Latino, per Census ACS data.
More from Massachusetts
Data for Massachusetts's 4th Congressional District (119th Congress) from the American Community Survey 5-Year estimates. Land area from the Census Gazetteer files. Congressional districts are redrawn after each decennial Census; the 119th Congress (current) uses post-2020 boundaries.
The this entity record above pulls directly from the U.S. Census Bureau ACS and decennial files. What follows is the per-entity context — how this entity sits in the broader U.S. population demographics distribution and which underlying factors drive the headline numbers.
The methodology behind every numeric value on this page is publicly documented on the the U.S. Census Bureau ACS and decennial files portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. states, metros, cities, and ZIPs with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: U.S. Census Bureau ACS, 2026.