In 2019, Lewis County, ID had a population of 3.84k people with a median age of 48.6 and a median household income of $41,198. Between 2018 and 2019 the population of Lewis County, ID declined from 3,845 to 3,838, a −0.182% decrease and its median household income declined from $41,326 to $41,198, a −0.31% decrease.
The 5 largest ethnic groups in Lewis County, ID are White (Non-Hispanic) (83.8%), American Indian & Alaska Native (Non-Hispanic) (7.74%), White (Hispanic) (2.87%), Two+ (Non-Hispanic) (1.95%), and Asian (Non-Hispanic) (1.38%). 0% of the households in Lewis County, ID speak a non-English language at home as their primary language, and 99.1% of the residents in Lewis County, ID are U.S. citizens.
In 2019, the median property value in Lewis County, ID was $132,300, and the homeownership rate was 69.4%. Most people in Lewis County, ID drove alone to work, and the average commute time was 21.4 minutes. The average car ownership in Lewis County, ID was 2 cars per household.