In 2018, Gem County, ID had a population of 17.1k people with a median age of 45.1 and a median household income of $43,001. Between 2017 and 2018 the population of Gem County, ID grew from 16,850 to 17,052, a 1.2% increase and its median household income grew from $42,888 to $43,001, a 0.263% increase.
The 5 largest ethnic groups in Gem County, ID are White (Non-Hispanic) (87.9%), Other (Hispanic) (4.73%), White (Hispanic) (2.2%), Two+ (Non-Hispanic) (1.68%), and American Indian & Alaska Native (Non-Hispanic) (1.45%). 0% of the households in Gem County, ID speak a non-English language at home as their primary language, and 97.8% of the residents in Gem County, ID are U.S. citizens.
In 2018, the median property value in Gem County, ID was $159,300, and the homeownership rate was 73.5%. Most people in Gem County, ID drove alone to work, and the average commute time was 25.6 minutes. The average car ownership in Gem County, ID was 2 cars per household.