In 2023, Spencer, IA had a population of 11.4k people with a median age of 41.3 and a median household income of $57,068. Between 2022 and 2023 the population of Spencer, IA grew from 11,351 to 11,393, a 0.37% increase and its median household income declined from $57,175 to $57,068, a −0.187% decrease.
The 5 largest ethnic groups in Spencer, IA are White (Non-Hispanic) (90.4%), White (Hispanic) (3.35%), Two+ (Non-Hispanic) (2.48%), Two+ (Hispanic) (1.81%), and Black or African American (Non-Hispanic) (0.685%).
None of the households in Spencer, IA reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
99.1% of the residents in Spencer, IA are U.S. citizens.
In 2023, the median property value in Spencer, IA was $178,300, and the homeownership rate was 67.7%.
Most people in Spencer, IA drove alone to work, and the average commute time was 17.4 minutes. The average car ownership in Spencer, IA was 2 cars per household.