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      Data: MIT Election Lab, VEST, Census Bureau
      Home›Massachusetts›MA-09

      Massachusetts's 9th Congressional District

      D+12.5
      ↓ R+5.5 vs 2022· Massachusetts · Latest: 2024

      Leans Democratic — 25D, 0R in 25 House elections

      Population788K

      Current Representative

      DEMWilliam Richard KeatingElected 2024

      118th Congress boundaries — Historical results before 2022 were contested under prior district lines.

      Ask the Historian

      Explore this district's political evolution with the Historian

      “How has Massachusetts's 9th Congressional District voted in House elections since 2000?”

      Key Insights

      • Has voted Democratic in the last 5 presidential elections

      Smart Insights

      30 elections analyzed

      AI-generated analysis of voting patterns and trends in MA-09.

      Unlock with Pro$33/mo

      Related Pages

      2024 House ElectionMassachusetts Profile

      Who lives in Massachusetts's 9th Congressional District? 788,493 residents as of the 2020 Census.

      Demographics

      MA-09 vs Massachusetts vs National

      Population

      Total Population
      788K
      State: 7.0M National: 334.9M
      Share of US Population
      0.24%
      National: 100%
      Voting Age Population
      79.6%
      State: 77.2% National: 75.7%

      Language at Home

      Non-English at Home
      13.1%
      State: 25.1% National: 22.2%
      English Only
      86.9%
      State: 74.9% National: 77.8%

      Economic

      Median Household Income
      $100,749
      State: $106,183 National: $83,960
      Poverty Rate
      8.2%
      State: 10.1% National: 12.5%
      College Degree
      42.6%
      State: 47.3% National: 35.6%
      Homeownership
      76.2%
      State: 62.5% National: 65.2%

      Age & Other

      Median Age
      46.8 yrs
      State: 40.3 yrs National: 39.1 yrs
      Age 18-29
      13.0%
      State: 16.8% National: 15.7%
      Age 65+
      24.3%
      State: 17.9% National: 17.0%
      Foreign Born
      9.5%
      State: 18.0% National: 14.1%

      Who Lives Here

      MA-09 — Census ACS 2024

      White (Non-Hispanic) 82.2%Multiracial 7.0%Hispanic 6.4%Black 2.7%Asian 1.5%Native American 0.3%
      GroupMA-09StateNational
      ▶White (Non-Hispanic)(13)
      82.2%66.6%57.4%
      Multiracial / Other
      7.0%5.7%4.0%
      ▶Hispanic / Latino(18)
      6.4%13.3%19.3%
      ▶Black(10)
      2.7%6.8%12.2%
      ▶Middle Eastern / North African(10)
      1.5%—0.9%
      ▶Asian(6)
      1.5%7.3%6.0%
      ▶Native American / Alaska Native(2)
      0.3%0.2%0.9%

      Census treats race and Hispanic/Latino origin as separate questions. Race categories other than Hispanic reflect total populations (small Hispanic overlap in Black, Asian, AIAN, NHPI). “Multiracial / Other” is derived as a non-overlapping remainder.

      Click rows to expand ancestry detail. Ancestry from ACS B04006, B03001, B02020, B02016. Totals may differ from race — individuals can report multiple ancestries.

      MENA estimated from ancestry reporting — Census does not have a separate MENA race category. Not shown in bar (overlaps with other race groups).

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      NH-01New Hampshire
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      PA-04Pennsylvania
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      90%
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      More Similar Districts

      7 more similar districts

      See 7 more districts with voting patterns like MA-09.

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      Other Massachusetts Districts

      MA-01D+58.0MA-02D+64.6MA-03D+73.0MA-04D+70.3MA-05D+75.5MA-06D+73.2MA-07D+82.0MA-08D+38.9

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      Precinct data, Smart Insights, full history, and more

      Precinct-Level Data
      See results for every neighborhood and voting precinct
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      165 years of election data at every level of geography
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