Hammond leans heavily Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 48% of adults in Hammond typically vote, below the U.S. average of about 62%. Among adults in Hammond, ~31% vote Democratic, ~17% Republican, and ~52% don't vote. The map below shows estimated turnout by block group.
How Hammond compares
Among cities within 25 miles, Hammond leans more Democratic than 80 of 115 neighbors.
Hammond runs about 50 points more Democratic than Indiana as a whole. Indiana leans Republican overall, while Hammond is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within Hammond. The northeast side is the most Democratic-leaning (D+63) and the southwest side is the least Democratic-leaning (D+18), a spread of about 45 points.
Why Hammond 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 Hammond, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 98% of residents in Hammond live in densely developed areas, about 62 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 44% of adults in Hammond have never been married, above 96% of cities. Hammond runs against the grain of Indiana, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Hammond, IN sits in the top tenth nationally on this measure.
Why turnout in Hammond looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Hammond 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 48%, about 13 points below the Indiana average of 61%. Renters vote less often than owners, and about 37% of households in Hammond rent, above 93% of cities. High food insecurity lines up with lower turnout, and about 30% of adults in Hammond report food insecurity, above 95% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- East Chicago, IN D+58
- Calumet City, IL D+74
- Munster, IN D+6
- Lansing, IL D+49
- Highland, IN Even
- Burnham, IL D+64
- South Holland, IL D+77
- Whiting, IN D+7
- Griffith, IN D+4
- Lynwood, IL D+67
Cities with Similar Populations
- Centreville, VA D+26
- San Rafael, CA D+46
- Palatine, IL D+19
- Passaic, NJ D+5
- Lexington, NC R+35
- Casas Adobes, AZ D+9
- Huntington Park, CA D+37
- Bothell, WA D+29
- Morgantown, WV D+13
- Statesville, NC R+20
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Sources and methodology
Precinct-level voting records used to fit the model come from Indiana 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.