Couzins was the first woman appointed as a deputy U.S. marshal in 1884.
On March 17, 1884, Phoebe Couzins was appointed as the first female deputy U.S. marshal, serving the Eastern District of Missouri. Her appointment came after her father became the U.S. marshal for the district, standing as her immediate superior. This pioneering achievement was emblematic of Couzins' capacity to challenge and redefine conventional gender roles in law enforcement and federal offices, showcasing her unyielding dedication to her career and public service amidst a predominantly male environment.