Eureka is an unincorporated census-designated place in the town of Rushford, in Winnebago County, Wisconsin, United States.

It is located on the Fox River at the intersection of county highways K & E southwest of Omro.

They became the first settlers and founders of Eureka, a plot of which was recorded on 24 July 1850, of which Rounds, Dickerson and Starr[who?]

A ferry was established across the Fox River at this point, during the same season, and four years later a bridge was constructed.

The post office was authorized on 16 July 1850 and Lester Rounds was appointed postmaster.

Eureka was the setting for the RKO Radio Pictures film, All Mine to Give.

Jaeger's coin flip left the field open for Servco Pacific, a diversified company founded in 1919, to become the oldest family business in Hawaii.

[10] Local folklore claims the Foote Mansion is haunted and that Al Capone used it as a whiskey distillery during prohibition.