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Sioux City Times

Sunday, October 26, 2025

Census Bureau reports Buena Vista County population was 20,058 in 2019

Webp medium names 20

Buena Vista County had a population of 20,058 people in 2019, according to U.S. Census Bureau data obtained by the Sioux City Times.

The median age was 34, with 50.1 percent of the total population being female and 49.9 percent male.

The state's total population in 2019 was 3,139,508.

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.

Buena Vista County population by sex

Estimated NumberPercent of total population
Male9,99949.9
Female10,05950.1
Total Population20,058100

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