Olmsted is located in Illinois. Olmsted, Illinois has a population of 328. Olmsted is more family-centric than the surrounding county with 22.41% of the households containing married families with children. The county average for households married with children is 18.55%.
The median household income in Olmsted, Illinois is $24,688. The median household income for the surrounding county is $40,197 compared to the national median of $69,021. The median age of people living in Olmsted is 34.6 years.
The average high temperature in July is 88.8 degrees, with an average low temperature in January of 25.4 degrees. The average rainfall is approximately 48.8 inches per year, with 7.2 inches of snow per year.