† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupArlingtonMassachusettsUnited States
Irish20.9%18.6%9.4%
Italian13.8%11.1%4.8%
English11.1%9.7%9.5%
German7.2%5.4%12.5%
French3.7%4.7%1.6%
Polish3.5%3.4%2.2%
American3.5%3.3%5.3%
French Canadian2.6%——
Chinese4.4%2.5%1.3%
Asian Indian3.8%1.9%1.4%
Cambodian1.1%0.4%—
Vietnamese0.9%0.8%0.6%
Korean0.8%0.4%0.4%
Nepalese0.3%——
Taiwanese0.3%——
Filipino0.2%0.2%0.9%
Puerto Rican1.2%4.6%1.8%
Salvadoran0.7%1.1%0.7%
Mexican0.5%0.8%11.3%
Guatemalan0.4%0.8%0.5%
Dominican0.4%2.7%0.7%
Colombian0.3%0.6%0.4%
Ecuadorian0.2%0.3%—
African American†0.9%2.6%9.9%
Haitian0.4%1.1%0.3%
African0.2%0.3%0.5%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
Arlington
Massachusetts
United States
Median age
41.6
40.3
39.1
Age 18–24
4.0%
9.9%
9.2%
Age 65 and older
17.3%
17.9%
17.2%
Household economy
Measure
Arlington
Massachusetts
United States
Median household income
$150,701
$103,960
$84,427
Poverty rate
5.4%
10.1%
12.5%
Bachelor's degree or higher (25+)
76.1%
47.3%
35.6%
Languages at home
Measure
Arlington
Massachusetts
United States
Speaks a non-English language at home
22.0%
25.1%
22.3%
Spanish
2.4%
9.7%
13.6%
Other Indo-European
6.9%
6.1%
2.0%
Chinese (incl. Mandarin & Cantonese)
4.7%
2.2%
1.1%
Other Asian & Pacific Island
2.3%
1.2%
1.1%
Religious landscape
Measure
Arlington
Massachusetts
United States
Catholic
—
35.5%
18.6%
Evangelical Protestant
—
3.6%
16.5%
Unclaimed / not counted
—
51.4%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Arlington, Massachusetts
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+46.7%
2008
+47.4%
2012
+46.6%
2016
+59.1%
2020
+67.6%
2024
+65.5%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
D
80.7%Harris22,399
15.2%Trump4,219
4.1%
D+65.5
R+2.1
D+67.0
27,764
D
82.9%Biden23,671
15.3%Trump4,381
1.7%
D+67.6
D+8.4
D+63.1
28,551
D
76.5%Clinton20,539
17.3%Trump4,652
6.2%
D+59.1
D+12.5
D+57.1
26,861
D
72.3%Obama19,071
25.7%Romney6,779
2.0%
D+46.6
R+0.8
D+42.7
26,376
D
72.8%Obama18,365
25.4%McCain6,407
1.8%
D+47.4
D+0.7
D+40.1
25,230
D
72.5%Kerry17,433
25.8%Bush6,206
1.7%
D+46.7
—
D+49.2
24,040
Arlington sits just five miles from Boston and turns out college-educated voters at unusually high rates, producing consistent double-digit margins in statewide races that make it a reliable indicator for the wider Route 2 corridor.
Across the recorded series it reached a Democratic high of 67.6 points in 2020. Between 2020 and 2024 the city moved 2.1 points toward the Republican candidate; the 2024 margin was 65.5 points.
A population of 46,350, a 75% non-Hispanic-white share, and a median household income of $150,701 describe the city. The city's voting pattern over the last decade is most similar to that of Newton and Bethesda.
Akashic
Political twins — cities
The cities whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
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.
In 2024, Arlington, Massachusetts voted Democratic by 65.5 points (D+65.5), carried by the Democratic candidate. Out of 27,764 votes cast, 22,399 went Democratic and 4,219 went Republican.
How many people live in Arlington, Massachusetts?
Arlington, Massachusetts has a population of 46,350 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Arlington, Massachusetts?
Median household income in Arlington, Massachusetts is $150,701 — above the national median of $80,734. The Massachusetts state median is $103,960.
What is the political history of Arlington, Massachusetts?
Akashic tracks 6 presidential elections in Arlington, Massachusetts from 2004 to 2024. Of those, 6 went Democratic and 0 went Republican.
