Born on a farm in Mount Carroll, Illinois, Kremer received his law degree from Northern Illinois University College of Law. From 1899 to 1916, Kremer practiced law in Madison, Wisconsin. He then moved to Phillips, Wisconsin, where he continued to practice law and owned a farm. Kremer served as district attorney and municipal judge for Price County, Wisconsin. He owned and published The Wisconsin Homestead, an agricultural newspaper. In 1937, Kremer served in the Wisconsin State Assembly and was a Progressive.Wisconsin Blue Book 1937, Biographical Sketch of Felix A. Kremer, p. 62. Kremer died in a hospital in Madison, Wisconsin, in 1940.
