Mjölby Municipality () is a municipality in Östergötland County in southeast Sweden. Its seat is located in the city of Mjölby, with some 13,000 inhabitants.

The present municipality was established in 1971, when the City of Mjölby, the City of Skänninge and the rural municipalities in the vicinity were amalgamated into the new entity. There are about twenty original units within Mjölby Municipality.

Localities

  • Bjälbo
  • Hogstad
  • Mantorp
  • Mjölby (seat)
  • Skänninge
  • Spångsholm
  • Sya
  • Väderstad

Demographics

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

In total there were 28,244 residents, including 21,414 Swedish citizens of voting age.