Eureka is located in north central South Dakota, and has a population of 868.
Eureka has a beautiful lake and park area which are used for recreation, fishing, swimming, camping, and boating.
Eureka has numerous sporting opportunities including a 9-hole golf course, softball and baseball fields, a tennis court, a basketball court, a footbal field, and an all weather track complex that is open to the public for exercising purposes.
Eureka has many hunting opportunities and has a shooting range just outside of town
Eureka is the birthplace of Al Neuharth, the founder of U.S.A. Today.
Eureka's population consists mostly of German-Russian descent.