In 2023, Marietta, IL had a population of 110 people with a median age of 39.5 and a median household income of $57,188. Between 2022 and 2023 the population of Marietta, IL grew from 81 to 110, a 35.8% increase and its median household income declined from $63,125 to $57,188, a −9.41% decrease.
The 5 largest ethnic groups in Marietta, IL are White (Non-Hispanic) (100%), White (Hispanic) (0%), Black or African American (Non-Hispanic) (0%), Black or African American (Hispanic) (0%), and American Indian & Alaska Native (Non-Hispanic) (0%).
None of the households in Marietta, 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.
100% of the residents in Marietta, IL are U.S. citizens.
In 2023, the median property value in Marietta, IL was $81,700, and the homeownership rate was 97.9%.
Most people in Marietta, IL drove alone to work, and the average commute time was 24.4 minutes. The average car ownership in Marietta, IL was 3 cars per household.