Eureka, South Dakota

Eureka
City of Eureka
Location in McPherson County and the state of South Dakota
Coordinates: 45°46′15″N 99°37′14″W / 45.77083°N 99.62056°W / 45.77083; -99.62056
CountryUnited States
StateSouth Dakota
CountyMcPherson
PlattedOctober 3, 1887
Incorporated1892
Government
  MayorWendy Brockel
Area
  Total
1.00 sq mi (2.59 km2)
  Land0.93 sq mi (2.42 km2)
  Water0.07 sq mi (0.17 km2)
Elevation
1,887 ft (575 m)
Population
 (2020)
  Total
813
  Estimate 
(2022)
794
  Density871.38/sq mi (336.45/km2)
Time zoneUTC-6 (Central (CST))
  Summer (DST)UTC-5 (CDT)
ZIP code
57437
Area code605
FIPS code46-20180
GNIS feature ID1267384
Websiteeurekasd.com

Eureka is a city in western McPherson County, South Dakota, United States, near the North Dakota state line. The population was 813 at the 2020 census.