Who We Are

Southeast CASA serves children in Yankton, Clay, Bon Homme, and Union counties in South Dakota

Our mailing address is :
Southeast CASA 
P.O. Box 7017 
Yankton, SD  57078-7017

Our Main Office is in Yankton at 327 Broadway Ave., Suites 8 & 11.

Our satellite office is in Vermillion (no mail delivered to this address) at 23 W. Main Street.