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South Iowa News

Tuesday, November 11, 2025

Census Bureau reports Adams County population was 3,633 in 2020

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Adams County had a population of 3,633 people in 2020, according to U.S. Census Bureau data obtained by the South Iowa News.

The median age was 47, with 50.7 percent of the total population being female and 49.3 percent male.

The state's total population in 2020 was 3,150,011.

An agency of the U.S. Federal Statistical System, the Census Bureau is responsible for compiling statistical facts about the American people, places and economy. Data for this story was compiled from the bureau’s American Community Survey. Information from the survey helps to determine how federal and state funds are distributed.

Adams County population by sex

Estimated NumberPercent of total population
Male1,79149.3
Female1,84250.7
Total Population3,633100

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