Gov. Evers appoints Erica Koxlien as Trempealeau County Sheriff

Dec. 14, 2025

MADISON, Wis. — Gov. Tony Evers today appointed Erica Koxlien as Trempealeau County Sheriff. The appointment fills a vacancy created by Sheriff Brett A. Semingson’s retirement. Koxlien will complete the remainder of the unexpired term that ends January 2027.

“Erica Koxlien is a respected law enforcement officer, who has served her community well for a decade,” said Gov. Evers. “She will be a committed and dedicated sheriff for the people of Trempealeau County.”

For the last decade, Koxlien has served as a law enforcement officer in the Trempealeau County Sheriff’s Office, first as a patrol officer and then as a detective. Her work has covered a broad array of cases, including investigating deaths, narcotics cases, sexual assault cases, child maltreatment, and financial crimes. During her time with the department, she has developed a youth education program titled “BADGES,” which stands for building alliances, delivering guidance, and educating students. As a representative of the department, Koxlien serves on the recovery court team, the child death review team, and the school critical threat assessment team, and she is the head of the child maltreatment multidisciplinary team.

“Erica Koxlien leads with heart, honor, and a genuine commitment to the people of Trempealeau County, bringing collaborative leadership that strengthens safety, trust, and unity throughout our community,” said Osseo-Fairchild School District Superintendent Lori Whelan.

Koxlien was born and raised in Trempealeau County and lives in Osseo with her family. She holds a bachelor’s degree in criminal justice from the University of Wisconsin–Eau Claire. For the past year, she has also served as an instructor for the Western Technical College Law Enforcement Academy.

“As I assume the role of sheriff, I recognize that effective public safety is achieved through collaboration,” said Koxlien. “I look forward to working closely with our community partners and advancing practices that ensure a safer community for all residents of Trempealeau County.”