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Seneca, Illinois

Last updated: 2024 BLS data · Page refreshed:

City Profile — Demographics, Income, Education & Housing
Data: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates
2,450
Population
$86,830
Median Income
$227,500
Home Value
35.5
Median Age

Demographics

Seneca has a population of 2,450 with a median age of 35.5. Here is the racial and ethnic breakdown of the population:

White
88.9%
Hispanic
10.0%
Black
0.9%
Demographic Value
Total Population2,450
Median Age35.5
White88.9%
Black or African American0.9%
Hispanic or Latino10.0%
Seneca, Illinois — racial composition (Census ACS 2024)Donut chart of 3 segments totaling 100.White: 89.1%Hispanic/Latino: 10.0%Other: 0.9%2,450PopulationWhiteWhite89.1%Hispanic/LatinoHispanic/Latino10.0%OtherOther0.9%

Income & Economy

The median household income in Seneca is $86,830, which is 7.7% above the national median of $80,610. The per capita income is $41,006. The poverty rate is 22.2%.

$86,830
Median Household Income
$41,006
Per Capita Income
22.2%
Poverty Rate

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Education

In Seneca, 93.9% of residents age 25+ have a high school diploma or higher, and 14.9% hold a bachelor's degree or higher (2.8% with a graduate or professional degree).

HS Diploma+
93.9%
Bachelor's+
14.9%
Graduate+
2.8%
Education Level % of Adults (25+)
High School Diploma or Higher93.9%
Bachelor's Degree or Higher14.9%
Graduate or Professional Degree2.8%

Housing

The median home value in Seneca is $227,500, below the national median of $303,400. The median monthly rent is $1,149. The homeownership rate is 81.3%.

$227,500
Median Home Value
$1,149/mo
Median Rent
81.3%
Homeownership Rate
Housing Metric Value
Median Home Value$227,500
Median Monthly Rent$1,149
Homeownership Rate81.3%
Vacancy Rate6.3%

Salaries in Illinois

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Frequently Asked Questions

What is the population of Seneca, Illinois?
The population of Seneca, Illinois is 2,450 according to U.S. Census Bureau ACS 2024 5-Year Estimates.
What is the median household income in Seneca, Illinois?
The median household income in Seneca, Illinois is $86,830. This is 7.7% above the national median of $80,610.
What is the median home value in Seneca, Illinois?
The median home value in Seneca, Illinois is $227,500. The median monthly rent is $1,149.
What percentage of people in Seneca have a college degree?
In Seneca, Illinois, 14.9% of adults age 25 and older hold a bachelor's degree or higher, and 93.9% have a high school diploma or higher.
Is Seneca, Illinois an affordable place to live?
The home price-to-income ratio in Seneca, Illinois is 2.6x (median home value $227,500 vs. median income $86,830), making it relatively affordable by that measure. A ratio under 4.0 is generally considered affordable.

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