The amalgamation during the 1970s' local government reform took place in the area on 1 January 1974, when the former market town Osby (itself instituted as such in 1937) was merged with three adjacent rural municipalities.
Localities
There are 3 localities (or built-up areas) in Osby Municipality.
In the table the localities are listed according to the size of the population as of 31 December 2005. The municipal seat is in bold characters.
This is a demographic table based on Osby Municipality's electoral districts in the 2022 Swedish general election sourced from SVT's election platform, in turn taken from SCB official statistics.[3]
In total there were 13,238 residents, including 9,888 Swedish citizens of voting age.[3] 37.9% voted for the left coalition and 61.1% for the right coalition. Indicators are in percentage points except population totals and income.