In 2017, Spencer, IA had a population of 11.1k people with a median age of 40.3 and a median household income of $45,719. Between 2016 and 2017 the population of Spencer, IA declined from 11,172 to 11,132, a -0.358% decrease and its median household income grew from $45,559 to $45,719, a 0.351% increase.
The 5 largest ethnic groups in Spencer, IA are White (Non-Hispanic) (93%), Two or More Races (Non-Hispanic) (2.69%), White (Hispanic) (2.57%), Some Other Race (Hispanic) (0.665%), and Asian (Non-Hispanic) (0.611%). N/A% of the people in Spencer, IA speak a non-English language, and 99.5% are U.S. citizens.
The median property value in Spencer, IA is $123,800, and the homeownership rate is 63.7%. Most people in Spencer, IA commute by Drove Alone, and the average commute time is 14.5 minutes. The average car ownership in Spencer, IA is 2 cars per household.