Massachusetts' 4th Congressional District
Massachusetts · MA-04
Massachusetts' 4th Congressional District is one of 9 U.S. House districts in Massachusetts, represented in Congress by Jake Auchincloss (Democrat). It is home to roughly 775,409 people, with a median age of 41. The population is about 78% White. The median household income is $114,461, and 50% of adults 25 and older hold a bachelor’s degree or higher. In the 2024 presidential election it voted solidly Democratic (D+20).
Representative
Current U.S. House member (source: house.gov).
Geography
MA-04 is shown in red. Click a neighboring district to open it, or zoom out to explore the country.
Covering 709 square miles, MA-04 is the 298th-largest of the 435 congressional districts by land area. With about 1,094 residents per square mile, it is a largely suburban district. Its shape is irregular: the district's Polsby-Popper score of 0.19 ranks 323rd of 435 nationally, where 1st is the most compact.
Presidential results
In the 2024 presidential election, 59% of MA-04 voters backed Kamala Harris and 39% Donald Trump — a D+20 margin. That is a 8.0-point shift toward the Republicans from 2020, when the district voted D+28.
Two-party presidential vote by district (source: The Downballot).
Who lives here
The median resident of the district is 41 years old; 21.5% of residents are under 18 and 16.9% are 65 or older. About 15.3% of residents were born outside the United States, and 20.5% speak a language other than English at home.
U.S. Census Bureau, American Community Survey (5-year estimates).
Economy & education
At $114,461, the district's median household income ranks 37th of 435 districts nationwide. The typical owner-occupied home is worth $545,130, and the median rent is $1,536 a month. 8.1% of residents live below the poverty line, and workers average a 32.5-minute commute (17.6% work from home).
U.S. Census Bureau, American Community Survey (5-year estimates).