In 2018, Spencer, IA had a population of 16.3k people with a median age of 42.7 and a median household income of $47,874. Between 2017 and 2018 the population of Spencer, IA declined from 16,387 to 16,313, a -0.452% decrease and its median household income declined from $48,978 to $47,874, a -2.25% decrease.
The 5 largest ethnic groups in Spencer, IA are White (Non-Hispanic) (93.5%), Two+ (Non-Hispanic) (1.96%), White (Hispanic) (1.89%), Other (Hispanic) (0.864%), and Asian (Non-Hispanic) (0.546%). NaNk% of the people in Spencer, IA speak a non-English language, and 98.5% are U.S. citizens.
The median property value in Spencer, IA is $120,600, and the homeownership rate is 68.8%. Most people in Spencer, IA commute by Drove Alone, and the average commute time is 14.7 minutes. The average car ownership in Spencer, IA is 2 cars per household.