Traunik was the heart of a large ethnic community that developed in the early 1900s, when Slovenians who cut timber settled on the cut-over land. The store was built in 1922–23 and was purchased by Louis Mikulich in 1925. It became the social and economic center for the community. In 1927 Mikulich became Postmaster and opened a post office in the store, while his family’s residence was on the second floor. The Mikulich General Store was listed in the National Register of Historic Places in 1993.