Arlington Heights leans slightly Democratic by roughly 8 points: about 54% of voters vote Democratic and 46% Republican.
About 71% of adults in Arlington Heights typically vote, above the U.S. average of about 62%. Among adults in Arlington Heights, ~38% vote Democratic, ~33% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How Arlington Heights compares
Among cities within 25 miles, Arlington Heights leans more Democratic than 127 of 134 neighbors.
Arlington Heights runs about 10 points more Democratic than Pennsylvania as a whole.
Politics vary noticeably by neighborhood within Arlington Heights. The southwest side is the most Democratic-leaning (D+17) and the northeast side is the least Democratic-leaning (Even), a spread of about 16 points.
Why Arlington Heights leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Arlington Heights, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 60% of residents in Arlington Heights live in densely developed areas, about 23 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Arlington Heights sits in the top quarter (about 37%, above 84% of cities). A high never-married share predicts Democratic voting, and about 42% of adults in Arlington Heights have never been married, above 95% of cities.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Arlington Heights, PA sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Arlington Heights looks the way it does
Turnout in Arlington Heights sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Stroudsburg, PA Even
- Minisink Hills, PA R+16
- Delaware Water Gap, PA D+13
- Stormville, PA R+16
- East Stroudsburg, PA D+12
- Bartonsville, PA R+8
- Kemmererville, PA R+22
- North Bangor, PA R+36
- Analomink, PA D+3
- Shawnee On Delaware, PA D+10
Cities with Similar Populations
- Leakesville, MS R+38
- Bensley, VA D+22
- Redwood Valley, CA R+4
- Flourtown, PA D+32
- East Greenville, PA R+19
- Waverly, OH R+60
- Connell, WA R+47
- Glendive, MT R+51
- Bartonville, IL R+16
- Alfred, ME R+22
Sources and methodology
Precinct-level voting records used to fit the model come from Pennsylvania Department of State, Bureau of Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.