Spencer is a medium-sized city located in the state of Iowa. With a population of 11,451 people and three associated neighborhoods, Spencer is the 35th largest community in Iowa.

Residents of the city have the good fortune of having one of the shortest daily commutes compared to the rest of the country. On average, they spend only 17.03 minutes getting to work every day.

The overall education level of Spencer is somewhat higher than in the average US city of 21.84%: 28.22% of adults 25 and older in the city have at least a bachelor's degree.

The per capita income in Spencer in 2022 was $36,456, which is middle income relative to Iowa and the nation. This equates to an annual income of $145,824 for a family of four. However, Spencer contains both very wealthy and poor people as well.

The people who call Spencer home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Spencer residents report their race to be White, followed by Black or African-American. Important ancestries of people in Spencer include German, Norwegian, Irish, English, and Swedish.

The most common language spoken in Spencer is English. Other important languages spoken here include Spanish and Polish.