Seneca, Illinois

Median Household Income

U.S.

$51,415

Grundy County

$64,552

Seneca

$65,137

2000 U.S. Census data, adjusted for inflation

61360

Seneca Demographics

Population - 2,053

Latino

1.5%

White

98%

2000 U.S. Census data

The median age for residents in Seneca, IL is 35.7 (this is older than average age in the U.S.).

Families (non-single residences) represent 76.6% of the population, giving Seneca a higher than average concentration of families.

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