89121 leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% Republican.
About 43% of adults in 89121 typically vote, below the U.S. average of about 62%. Among adults in 89121, ~26% vote Democratic, ~17% Republican, and ~57% don't vote. The map below shows estimated turnout by block group.
How 89121 compares
Among zip codes within 15 miles, 89121 leans more Democratic than 38 of 52 neighbors.
89121 runs about 22 points more Democratic than Nevada as a whole. Nevada leans Republican overall, while 89121 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 89121. The northeast side is the most Democratic-leaning (D+34) and the south side is the least Democratic-leaning (Even), a spread of about 32 points.
Why 89121 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 89121, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 89121 live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 42% of adults in 89121 have never been married, above 90% of zip codes. 89121 runs against the grain of Nevada, a Democratic-leaning pocket in a Republican-leaning state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 89121, NV sits in the bottom tenth nationally 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 89121 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 89121 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 47%, about 11 points below the Nevada average of 58%. Renters vote less often than owners, and about 48% of households in 89121 rent, about 23 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 28% of adults in 89121 report food insecurity, above 92% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
Sources and methodology
Precinct-level voting records used to fit the model come from Nevada 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.