The district was created in the 1972 redistricting act (1971 Wisc. Act 304) which first established the numbered district system, replacing the previous system which allocated districts to specific counties.[5] The 39th district was drawn with novel boundaries in central Jefferson County. Under the previous apportionment scheme, Jefferson County as a whole constituted an Assembly district. The last representative of the Jefferson County district, Byron F. Wackett, was elected in 1972 as the first representative of the 39th Assembly district.[6]
Following the 1982 court-ordered redistricting, which scrambled all State Assembly districts, the 1983 redistricting moved the 39th district to Dodge County. The district has remained in the same area since 1983, with variations in the boundaries.
^ abWisconsin Legislative Reference Bureau (1975). "Biographies"(PDF). In Theobald, H. Rupert; Robbins, Patricia V. (eds.). The state of Wisconsin 1975 Blue Book (Report). State of Wisconsin. pp. 46–47. Retrieved February 23, 2021.