The results of the Sweden Democrats were not published at a municipal level from between 1988 and 1998 by SCB because of the party's small size nationwide at the time.

Blocs This lists the relative strength of the socialist and centre-right blocs since 1973, but parties not elected to the Riksdag are inserted as "other", including the Sweden Democrats results from 1988 to 2006, but also the Christian Democrats pre-1991 and the Greens in 1982, 1985 and 1991.

New Democracy got elected in 1991 but are still listed as "other" due to the short lifespan of the party.

This is a demographic table based on Katrineholm Municipality's electoral districts in the 2022 Swedish general election sourced from SVT's election platform, in turn taken from SCB official statistics.

[16] In total there were 34,714 residents, of whom 25,962 were Swedish citizens of voting age.