73521 leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 53% of adults in 73521 typically vote, below the U.S. average of about 62%. Among adults in 73521, ~15% vote Democratic, ~38% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How 73521 compares
Among zip codes within 15 miles, 73521 is the least Republican-leaning.
73521 runs about 6 points more Democratic than Oklahoma as a whole.
Politics vary noticeably by block within 73521. The north side is the most Republican-leaning (R+56) and the southwest side is the least Republican-leaning (R+5), a spread of about 51 points.
Why 73521 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 73521, not a ranked or complete list of what matters most.
73521 votes Republican even though it is densely developed (about 63%, far above the Oklahoma average of 18%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 73521, OK sits in the bottom quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 73521 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 73521 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 45% of households in 73521 rent, compared to around 22% in nearby zip codes. High food insecurity lines up with lower turnout, and about 22% of adults in 73521 report food insecurity, above 84% 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 Oklahoma State Election Board, 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.