Towns & Cities

The Place We Call Home

Yankton County, established in 1862, is located along the southern border of South Dakota along the Missouri River. The county encompasses a total area of 533 square miles with a population of 22,684 (2014 US Census estimate).

The primary industries in the county are agriculture, manufacturing, and services.

The county seat is located in the largest city in the county - Yankton (population 14,552).

Our Cities and Towns

Announcements

Possible Quorum
Thursday, June 4, 2020

There will be a possible quorum on Monday, June 8, 2020 during the Yankton County Planning Commission Work Study Session.

Highway Department Hours
Wednesday, May 20, 2020

We are currently in our Summer Hours, which are 6:30am thru 5:00pm Monday thru Thursday.

Main Phone:
605.260.4400

Address:
321 West 3rd Street, Suite 100 Yankton, SD 57078

Office Hours:
9:00am - 5:00pm CST, Monday-Friday
Closed on Holidays, Saturdays, & Sunday

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