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Day County is a county located in the state of South Dakota. Based on the 2010 census, the population was 5,710. Its county seat is Webster. The county is named after Merritt H. Day, pioneer and 1879 Dakota Territory legislator.
Day is named for Territorial legislator Merrit H. Day.
County QuickFacts: CensusBureau Quick Facts
The settlement of the territory which now forms Day County began in 1880. The county was organized under the territorial laws by a board of Commissioners appointed by Governor Ordway. The first meeting of the board was held in Webster on January 2, 1882 and the town of Webster was named county seat. On May 2, 1885 a special election was held in the county submitting the question of dividing the county. The result was in favor of division and Marshall County was taken from the northern part of Day County.
As reported by the Census Bureau, the county has a total area of 1,091 square miles (2,826 km2), of which,
1,029 square miles (2,664 km2) of it is land and 63 square miles (162 km2) of it (5.74%) is water.
Bordering counties are as follows: