119th Congress · MA-9
Massachusetts's 9th Congressional District
Massachusetts's 9th Congressional District (MA-9) has a population of 782,837. The median household income is $97,651 and the median age is 46.9.
782,837
Population
624
People / sq mi
$97,651
Median Income
46.9
Median Age
MA-9 covers 1,255 sq mi of land at 623.7 people per square mile.
Race & Ethnicity
| White | 84.3% |
| Black or African American | 2.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.2% |
Economy & Income
$97,651
Median Household Income
$56,213
Per Capita Income
5.2%
Poverty Rate
3.1%
Unemployment
Housing
$529,100
Median Home Value
$1,356
Median Rent
75.9%
Homeownership
Education
93.0%
High School+
42.0%
Bachelor's+
Other Massachusetts Congressional Districts
Largest cities in Massachusetts
Largest counties in Massachusetts
State rankings
Frequently Asked Questions
Massachusetts's 9th Congressional District (MA-9) has a population of 782,837 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 9th Congressional District is $97,651, with a per capita income of $56,213.
Massachusetts's 9th Congressional District is 84.3% White, 2.7% Black, 0.0% Asian, and 1.2% Hispanic or Latino, per Census ACS data.
More from Massachusetts
Data for Massachusetts's 9th 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.