Eureka is an

unincorporated community An unincorporated area is a parcel of land that is not governed by a local general-purpose municipal corporation. (At p. 178.) They may be governed or serviced by an encompassing unit (such as a county) or another branch of the state (such as th ...

in Luce Township, Spencer County, in the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...

Indiana Indiana ( ) is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Lake Michigan to the northwest, Michigan to the north and northeast, Ohio to the east, the Ohio River and Kentucky to the s ...

History

Eureka was laid out in 1858. A post office was established at Eureka in 1872, and remained in operation until it was discontinued in 1921. Tradition has it the community was so named after a pioneer exclaimed " Eureka!" when he came upon the site.

Geography

Eureka is located at .

Climate

The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the

Köppen Climate Classification The Köppen climate classification divides Earth climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (te ...

system, Eureka has a

humid subtropical climate A humid subtropical climate is a subtropical -temperate climate type, characterized by long and hot summers, and cool to mild winters. These climates normally lie on the southeast side of all continents (except Antarctica), generally between ...

, abbreviated "Cfa" on climate maps.Climate Summary for Eureka, Indiana
/ref>

References

Unincorporated communities in Spencer County, Indiana {{SpencerCountyIN-geo-stub