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Linn County Population

All Linn County population data above are from the US Census Bureau.

Linn County Demographics Summary

population icon Population

With 221,661 people, Linn County is the 2nd most populated county in the state of Iowa out of 99 counties. But watch out, Linn County, because Johnson County with 146,547 people and Scott County with 172,474 people are right behind you.

Linn County 221,661
Johnson County 146,547
Scott County 172,474

race icon Race & Ethnicity

The largest Linn County racial/ethnic groups are White (88.2%) followed by Black (4.1%) and Hispanic (2.9%).

Top Race & Ethnicity Groups %
White 88.2%
Black 4.1%
Hispanic 2.9%

income icon Median Income

In 2015, the median household income of Linn County residents was $59,322. Linn County households made slightly more than Cedar County households ($59,047) and Delaware County households ($58,274) . However, 9.8% of Linn County residents live in poverty.

Median Household Income
Linn County $59,322
Cedar County $59,047
Delaware County $58,274

age icon Median Age

The median age for Linn County residents is 37.1 years young.

Median Age 37.1

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