Sergeant Jenifer Williams was born and raised in the St. Louis County area. She is currently assigned as a Watch Supervisor in the Division of Patrol, West County Precinct.
Sergeant Williams graduated from the St. Charles County Police Academy in 1990. She began her career in 1991, as a patrolman, working for the Arnold Police Department. She was hired by the St. Louis County Police Department in 1997, and was assigned to the West County Precinct. Shortly thereafter, she was transferred to the Fenton Precinct. In 1999, Sergeant Williams was transferred to the Bureau of Crimes Against Persons, where she was assigned as a Detective, primarily investigating sexual assaults. She was promoted in 2003, and was assigned as a Watch Commander in the Fenton Precinct. In 2004, Sergeant Williams was transferred to the West County Precinct, next to the Bureau of Security Services in 2008, and then transferred to the Division of Criminal Investigation, General Assignment Unit in 2010. She was assigned to her current position in July 2013.