Fort Sill leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.
About 25% of adults in Fort Sill typically vote, below the U.S. average of about 62%. Among adults in Fort Sill, ~11% vote Democratic, ~14% Republican, and ~75% don't vote. The map below shows estimated turnout by block group.
How Fort Sill compares
Among cities within 25 miles, Fort Sill leans more Republican than 1 of 21 neighbors.
Fort Sill runs about 36 points more Democratic than Oklahoma as a whole.
Politics vary noticeably by neighborhood within Fort Sill. The north side is the most split-leaning (R+20) and the east side is the least split-leaning (Even), a spread of about 19 points.
Why Fort Sill 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 Fort Sill, not a ranked or complete list of what matters most.
Fort Sill votes Republican even though it is densely developed (about 61%, far above the Oklahoma average of 18%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 89% of households in Fort Sill are family households, in the top fraction of cities.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; Fort Sill, OK sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Fort Sill looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Fort Sill 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 more than 99% of households in Fort Sill rent, compared to around 18% in nearby cities. Low high-school completion lines up with lower turnout, and more than 99% of adults in Fort Sill have completed high school, in the top fraction of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Lawton, OK R+9
- Meers, OK R+23
- Porter Hill, OK R+50
- Medicine Park, OK R+44
- Lakeside Village, OK R+57
- Elgin, OK R+50
- Geronimo, OK R+56
- Cache, OK R+49
- Edgewater Park, OK R+58
- Fletcher, OK R+55
Cities with Similar Populations
- Marble Falls, TX R+50
- Swanton, OH R+36
- Carmel, CA D+35
- Bethalto, IL R+27
- Berlin, NJ R+3
- Falling Waters, WV R+39
- Rockwood, MI R+18
- Middlesboro, KY R+48
- Bonifay, FL R+65
- Fultondale, AL R+3
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.