In 2022, Marshall County, IL had a population of 11.7k people with a median age of 46.2 and a median household income of $64,940. Between 2021 and 2022 the population of Marshall County, IL declined from 11,781 to 11,740, a −0.348% decrease and its median household income grew from $60,231 to $64,940, a 7.82% increase.
The 5 largest ethnic groups in Marshall County, IL are White (Non-Hispanic) (92.9%), Two+ (Non-Hispanic) (3.1%), White (Hispanic) (1.48%), Other (Hispanic) (0.903%), and Two+ (Hispanic) (0.622%).
None of the households in Marshall County, IL reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
99.2% of the residents in Marshall County, IL are U.S. citizens.
In 2022, the median property value in Marshall County, IL was $124,600, and the homeownership rate was 78.7%.
Most people in Marshall County, IL drove alone to work, and the average commute time was 27.3 minutes. The average car ownership in Marshall County, IL was 2 cars per household.
Marshall County, IL borders Bureau County, IL, LaSalle County, IL, Peoria County, IL, Putnam County, IL, Stark County, IL, and Woodford County, IL.