Kansas congressional districts are based on the enumeration of the state’s population as reported in the most recent decennial federal census.
The Kansas Constitution requires that the population basis for legislative districts (and by extension, the State Board of Education Districts) be the most recent decennial federal Census as adjusted to exclude nonresident students and military personnel and to include resident students and members of the military at the place of their permanent residence.
The Kansas Constitution was amended by the voters in 1988 to require the use of adjusted U.S. Census figures for development of legislative districts. Prior to 1988, the Constitution required that legislative districts be based on population enumerated in a state-conducted Census. The current adjustment process was used for the first time for redistricting in 1992, following the 1990 federal Census.