San Tan Ranch leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 73% of adults in San Tan Ranch typically vote, above the U.S. average of about 62%. Among adults in San Tan Ranch, ~30% vote Democratic, ~42% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How San Tan Ranch compares
San Tan Ranch runs about 11 points more Republican than Arizona as a whole.
Why San Tan Ranch leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for San Tan Ranch, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 80% of households in San Tan Ranch are family households, about 13 points above the U.S. average of 67%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; San Tan Ranch, Gilbert, AZ sits above the national average on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in San Tan Ranch looks the way it does
Areas with high high-school completion turn out at higher rates. About 98% of adults in San Tan Ranch have completed high school, about 11 points above the Arizona average of 87%. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Power Ranch, Gilbert, AZ R+16
- Sun Groves, Chandler, AZ R+8
- The Islands, Gilbert, AZ R+5
- Heritage District, Gilbert, AZ D+5
- Downtown Chandler, Chandler, AZ D+22
- Southeast Mesa, Mesa, AZ R+18
- Clemente Ranch, Chandler, AZ Even
- Central Mesa, Mesa, AZ R+6
- Pecan Creek, San Tan Valley, AZ R+23
- Circle Cross Ranch, San Tan Valley, AZ R+22
Neighborhoods with Similar Populations
- Keewaydin, Minneapolis, MN D+65
- Downtown Burlingame, Burlingame, CA D+52
- Downtown Lynn Haven, Lynn Haven, FL R+35
- Monroe Ward, Richmond, VA D+56
- Putnam Heights, Eau Claire, WI D+20
- Queensboro-Brentwood-Crystal Spgs, Bothell, WA D+29
- Wyndham Lakes Estates, Meadow Woods, FL D+12
- Lincoln Park-Buffalo, Tonawanda, NY D+16
- Northwood, Tamarac, FL D+20
- Catalina Foothills Estates, Catalina Foothills, AZ D+28
Sources and methodology
Precinct-level voting records used to fit the model come from Arizona Secretary of State, 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.