This site provides access to population, housing, business and government statistics in Iowa. This includes data from the U.S. Census Bureau, Iowa state agencies, and other state and federal sources. If you don't find what you need, contact their staff. They have access to more data than what is provided on their website.
For Iowa-specific data. Free, but requires registration to view the data if not ISU-affiliated. The contents are drawn off census reports for housing, population, demographics, households, education, income, poverty, workforce, energy, environment, agriculture, and health.
Based out of the ISU Sociology Department, this program collects and analyzes a wealth of industrial, economic and demographic data specific to Iowa. Special reports and custom data sets are also available here.
A page of facts pulled from various census reports related to Iowa, including: population, demographics, social characteristics, economic, housing, vital statistics, employment, businesses, land area and urban densities.
This is a book (not available online) written by Willis Goudy and published in 2008. Decennial census data on Iowa from 1850 to 2000 -- Iowa's population -- Natural change and migration in Iowa -- Counties and incorporated places in Iowa -- Rural and urban residents of Iowa -- Households and families in Iowa -- Gender in Iowa -- Age in Iowa -- Race and ethnicity in Iowa -- Education in Iowa -- Employment status and occupation in Iowa -- Income in Iowa -- Disability in Iowa -- Housing in Iowa -- Iowa after 2000.