Cost of Living in Seneca, IL

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2%
Overall NAT. AVG.
1%
Groceries NAT. AVG.
8%
Housing NAT. AVG.
Date & Last Updated: These cost of living estimates reflect 2026 modeled data using U.S. Census housing inputs and AI-assisted city-level pricing models.
The cost of living index is based on a national average of 100. For example, if the cost of living score is 90, then the estimated cost of living is 10% lower than the national average. If the score is 110, then the estimated cost of living is 10% higher than average. The overall index is calculated using weighted estimates across major everyday expense categories, including housing (30%), groceries (16%), transportation (12%), healthcare (10%), utilities (8%), lifestyle and entertainment (8%), household expenses (8%), and education and childcare (8%). All values are AI-assisted city-level estimates designed for directional comparisons.
Index Seneca Illinois National
Cost of living9898100
Groceries101100100
Health care102100100
Housing9295100
Transportation102101100
Utilities10199100
Lifestyle & Entertainment103100100
Household Items99100100
Education & Childcare95100100
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Homes For Sale In Seneca, IL

property for sale

1221 S Fox Run DR

Seneca, IL
property for sale

130 W Scott St

Seneca, IL
property for sale

Lot 56 Eagle Chase Dr

Seneca, IL
property for sale

lot 24 Eagle Chase Dr

Seneca, IL
See the Newest Homes For Sale In Seneca, IL

Cost Of Living Quick Facts

  • The cost of living in Seneca is equal to the Illinois average
  • The cost of living in Seneca is 2% lower than the national average
  • Seneca housing is 8% lower than the national average
  • Illinois general sales tax is 22% higher than the national average
  • Illinois state income tax is 91% higher than the national average

Most Affordable Places to Live in and Around Seneca

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Compare Seneca, IL Cost of Living

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      Cost of living index
      Groceries index
      Health care index
      Housing index
      Transportation index
      Utilities index
      Lifestyle index
      Household index
      Educare index

      Median Income & Debt-To-Income Ratio

      Median Income Per Year Per Month Max Budget (28% DTI) Max Budget (36% DTI)
      Owners$118,395$9,866$2,762$3,552
      Renters$59,500$4,958$1,388$1,785

      Illinois Sales Tax

      State General Sales Tax With Max Surtax
      Illinois 6.25% 10.25%

      Illinois Income Tax

      State Income Tax (Low) Income Tax (High)
      Illinois 4.95% 4.95%

      Nearby cities with low cost of living

      City Population Cost of Living Index National Avg.
      Streator, IL12,5928416.1%
      Kangley, IL2498515.2%
      Ransom, IL3628713.5%
      Kinsman, IL1008712.8%
      Naplate, IL4588812.1%
      Seneca, IL2,603982.2%

      Cities with similar population

      City Population Cost of Living Index National Avg.
      Elwood, IL2,603972.5%
      Trenton, NS2,603n/a 
      Pima, AZ2,602946.3%
      Waretown, NJ2,60213838.2%
      Nicoma Park, OK2,6028812.0%
      Seneca, IL2,603982.2%
      Date & Last Updated: These cost of living estimates reflect 2026 modeled data using U.S. Census housing inputs and AI-assisted city-level pricing models.
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