Akashic
1892–2024
Akashic
Massachusetts 66th State House District
presidential margin
2008D+14.12012D+6.22016D+28.72020D+40.92024D+36.5
full record · 2008 → 2024
D+36.5
2024
median income$184,238U.S. $80,734 · MA $103,960
median age43.2U.S. 39.1 · MA 40.3
poverty rate2.9%U.S. 12.5% · MA 10.1%
bachelor’s+ (25+)59.4%U.S. 35.6% · MA 47.3%
non-english28.4%U.S. 22.3% · MA 25.1%
race · ethnicity · ancestry
Irish23.4%
Italian14.9%
English11.8%
Chinese3.8%
Asian Indian3.0%
Vietnamese0.8%
Puerto Rican0.9%
Salvadoran0.5%
Mexican0.4%
African American†0.5%
Haitian0.2%
religion

Religious adherence is published only at the county level (U.S. Religion Census). See Middlesex County.

American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024.

Massachusetts 66th State House District

Akashic
Massachusetts 66th State House DistrictHarrisD+36.5
2024
2024 presidential margin for Massachusetts 66th State House DistrictThe boundary of Massachusetts 66th State House District, filled by its 2024 presidential margin (D+36.5), over faint outlines of the counties it is drawn from.Massachusetts 66th State House District · D+36.5
How it voted
Share of the 2024 vote
Kamala Harris ✓Democratic66.1%17,807
Donald TrumpRepublican29.6%7,968
Jill SteinGreen-Rainbow4.3%1,159
D+60
R+60
District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 2 counties it's drawn from (shown faint).
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
County-level results (2 counties) — table
2024 presidential result by county for Massachusetts 66th State House District — winner and D-vs-R margin.
CountyWinnerMargin
Middlesex County, MADemocraticD+39.2
Norfolk County, MADemocraticD+28.5
5 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonDemocraticRepublicanOtherMarginTotal
D
66.1%Harris17,807
29.6%Trump7,968
4.3%Stein1,159
+36.5%
26,934
D
69.1%Biden18,426
28.1%Trump7,509
2.8%Jorgensen750
+40.9%
26,685
D
59.6%Clinton14,171
30.9%Trump7,345
9.5%Johnson2,266
+28.7%
23,782
D
53.1%Obama12,024
46.9%Romney10,611
0.0%
+6.2%
22,635
D
56.2%Obama12,487
42.0%McCain9,345
1.8%Nader393
+14.1%
22,225
presidential history
Presidential margin, 2008–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 2008 to 2024. Most recent: +36.5% in 2024.+36.5%DR20082024
Presidential margin over time
YearMargin (D minus R)
2008+14.1%
2012+6.2%
2016+28.7%
2020+40.9%
2024+36.5%
DemocraticRepublican
current representation
Current officeholders
DJames Arena-DeRosaState House · 8th Middlesex

State legislative officeholder from OpenStates nightly current-legislator data.

Source · OpenStates current legislator CSV.

The 8th Middlesex delivered a 36.5-point Democratic presidential margin in 2024, reflecting the dense, highly educated suburban electorate characteristic of inner Middlesex County's legislative districts.

Across the recorded series it reached a Democratic high of 40.9 points in 2020. Between 2020 and 2024 the district moved 4.4 points toward the Republican candidate; the 2024 margin was 36.5 points.

A population of 43,813, a 81% non-Hispanic-white share, and a median household income of $184,238 describe the district. The district's voting pattern over the last decade is most similar to that of 14th Norfolk District and 14th Middlesex District.

Political twins — state-house districts

The state-house districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

14th Norfolk District
Massachusetts
98.2twin score
12-yr trendmedian incomecollege share
14th Middlesex District
Massachusetts
98.2twin score
12-yr trendmedian income2020–2024 trajectory
2nd Middlesex District
Massachusetts
98.1twin score
12-yr trendmedian incomecollege share≠ % Asian

Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.

Compare two places, side by side

Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →

Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Massachusetts 66th State House District. Akashic. https://akashic.app/sld-lower/25066/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Places within Massachusetts 66th State House District

counties it covers1
Middlesex County

Frequently asked questions

How did Massachusetts 66th State House District vote in 2024?
In 2024, Massachusetts 66th State House District voted Democratic by 36.5 points (D+36.5), carried by the Democratic candidate. Out of 26,934 votes cast, 17,807 went Democratic and 7,968 went Republican.
How many people live in Massachusetts 66th State House District?
Massachusetts 66th State House District has a population of 43,813 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Massachusetts 66th State House District?
Median household income in Massachusetts 66th State House District is $184,238 — above the national median of $80,734. The Massachusetts state median is $103,960.
What is the political history of Massachusetts 66th State House District?
Akashic tracks 5 presidential elections in Massachusetts 66th State House District from 2008 to 2024. Of those, 5 went Democratic and 0 went Republican.