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Missouri vs Kansas population, 1990 to 2025

Missouri leads Kansas in 2025 population: 6,270,541 vs 2,977,220. Compare annual state data from 1990.

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What the data shows

  • Missouri: 5.1M in 1990, 6.3M in 2025.
  • Kansas: 2.5M in 1990, 3M in 2025.

About this chart

Missouri had the larger population in 2025: 6,270,541 versus 2,977,220 for Kansas, a gap of 3,293,321. Over the full period from 1990, Missouri grew by 22.3%, while Kansas grew by 20.0%. Missouri was ahead in 1990 and remained ahead at every annual observation in the displayed series. The comparison uses the same reference year for both states.

The Census series compares July 1 resident populations for Missouri and Kansas. In 1990, their counts were 5,126,370 and 2,480,683, respectively. Estimates from different Census vintages are joined across decades, and revisions can affect the measured trend. These state totals include residents throughout each state rather than only its cities. They describe the scale and direction of population change but do not, on their own, separate births, deaths and migration.

The data

Source: U.S. Census Bureau population estimates, July 1 (vintages 1999, 2000–2010 intercensal, 2020 and 2025), people. Retrieved November 5, 2026. July 1 resident population estimates. Different Census vintages are joined across decades; revisions can affect comparisons.

Missouri vs Kansas population, Resident population, 1990 to 2025, 1990–2025
DateMissouriKansas
19905.1M2.5M
19915.2M2.5M
19925.2M2.5M
19935.2M2.5M
19945.3M2.6M
19955.3M2.6M
19965.4M2.6M
19975.4M2.6M
19985.4M2.6M
19995.5M2.7M
20005.6M2.7M
20015.6M2.7M
20025.7M2.7M
20035.7M2.7M
20045.7M2.7M
20055.8M2.7M
20065.8M2.8M
20075.9M2.8M
20085.9M2.8M
20096M2.8M
20106M2.9M
20116M2.9M
20126M2.9M
20136M2.9M
20146.1M2.9M
20156.1M2.9M
20166.1M2.9M
20176.1M2.9M
20186.1M2.9M
20196.1M2.9M
20206.2M2.9M
20216.2M2.9M
20226.2M2.9M
20236.2M2.9M
20246.2M3M
20256.3M3M

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Frequently asked questions

Which has a larger population, Missouri or Kansas?

Missouri had the larger population in 2025, at 6,270,541 compared with 2,977,220 for Kansas. The gap was 3,293,321 residents.

How have Missouri and Kansas changed since 1990?

Missouri moved from 5,126,370 to 6,270,541, a 22.3% increase. Kansas moved from 2,480,683 to 2,977,220, a 20.0% increase.

What exactly is being compared?

Census July 1 resident population estimates for the two whole states. The series combines Census vintages and does not isolate the causes of population change.

Where does this data come from?

U.S. Census Bureau population estimates, July 1 (vintages 1999, 2000–2010 intercensal, 2020 and 2025), people. Retrieved November 5, 2026. July 1 resident population estimates. Different Census vintages are joined across decades; revisions can affect comparisons. You can download the full table as a CSV from this page.

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