In 2023, Oak Grove, IL had a population of 335 people with a median age of 48.6 and a median household income of $41,912. Between 2022 and 2023 the population of Oak Grove, IL declined from 353 to 335, a −5.1% decrease and its median household income grew from $40,486 to $41,912, a 3.52% increase.
The 5 largest ethnic groups in Oak Grove, IL are White (Non-Hispanic) (94.6%), White (Hispanic) (1.79%), Two+ (Non-Hispanic) (1.49%), Asian (Non-Hispanic) (0.896%), and American Indian & Alaska Native (Non-Hispanic) (0.597%).
None of the households in Oak Grove, 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.
99.7% of the residents in Oak Grove, IL are U.S. citizens.
Most people in Oak Grove, IL drove alone to work, and the average commute time was 27 minutes. The average car ownership in Oak Grove, IL was 2 cars per household.