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All Delaware County population data above are from the US Census Bureau.
The population data for Delaware County are from the Census' American Community Survey 2017 5-year estimates and the Census' 2018 Population Estimates. The demographic data for Hardin County, Johnson County, Madison County, and Tama County are the most current, comparable demographics available from the US Census Bureau, are from the American Community Survey 2017 5-year estimates, and were downloaded on 6 December 2018. Check out our FAQ section for more details.
With 17,069 people, Delaware County is the 43rd most populated county in the state of Iowa out of 99 counties. But watch out, Delaware County, because Hardin County with 16,868 people and Tama County with 16,904 people are right behind you.
The largest Delaware County racial/ethnic groups are White (97.0%) followed by Hispanic (1.4%) and Two or More (1.0%).
In 2017, the median household income of Delaware County residents was $60,534. Delaware County households made slightly more than Johnson County households ($59,965) and Madison County households ($60,077) . However, 9.2% of Delaware County residents live in poverty.
The median age for Delaware County residents is 43.4 years young.
86% of people CANNOT find the data they're looking for on the US Census Bureau website. Source: Nielsen Norman Group
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