| USA > South Dakota > Yankton > Locations > Countries > States > Counties |
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Yankton County |
The county seat of Yankton County, South Dakota, is Yankton, in the Dakota Heritage & Lakes Region. The county population on July 1, 1999, was 21,190, an increase of 1,938 over the 1990 census.
For information on county government, contact the National Association of Counties Web site.
Additional information is available at these pages:
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| Location | Yankton South Dakota 57078 |
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