119th Congress · MA-3
Massachusetts's 3rd Congressional District
Massachusetts's 3rd Congressional District (MA-3) has a population of 777,948. The median household income is $97,616 and the median age is 39.2.
777,948
Population
1037
People / sq mi
$97,616
Median Income
39.2
Median Age
MA-3 covers 750 sq mi of land at 1036.8 people per square mile.
Race & Ethnicity
| White | 65.3% |
| Black or African American | 4.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.0% |
Economy & Income
$97,616
Median Household Income
$48,661
Per Capita Income
6.8%
Poverty Rate
3.8%
Unemployment
Housing
$466,900
Median Home Value
$1,560
Median Rent
63.9%
Homeownership
Education
89.3%
High School+
39.6%
Bachelor's+
Other Massachusetts Congressional Districts
Largest cities in Massachusetts
Largest counties in Massachusetts
State rankings
Frequently Asked Questions
Massachusetts's 3rd Congressional District (MA-3) has a population of 777,948 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 3rd Congressional District is $97,616, with a per capita income of $48,661.
Massachusetts's 3rd Congressional District is 65.3% White, 4.6% Black, 0.0% Asian, and 1.0% Hispanic or Latino, per Census ACS data.
More from Massachusetts
Data for Massachusetts's 3rd 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.
Every number on this page links back to the U.S. Census Bureau ACS and decennial files; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
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.