Demographics & People — Marion, Illinois

Population Overview

Population (Census)16,796
Estimated 2026~16,900
Median Age42.2
Total Households7,983
Family Households4,304
Average Household Size2.05
Diversity Index0.2257 (somewhat diverse)

Race & Ethnicity

White14,482
Black or African American879
Asian527
Hispanic or Latino626

Heritage & Ancestry

GroupCount
Unclassified or not reported6,239
Other groups3,143
German2,490
Irish2,221
English2,038
American1,016
Italian737
Hispanic: Hispanic or Latino486
French (except Basque)404
Hispanic: Mexican281

Language

English Only15,198
Spanish104
Population 5+15,855

Veterans

Veterans1,544
Population 18+13,269

Commuting

Mean Commute Time21.9 minutes
Work from Home11.3%
Commuter ProfileN/A
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Marion, Illinois.