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History of Yankton County

Yankton County played an early and important role in the history of Dakota Territory and the state of South Dakota.

Bordered on the south by the Missouri River, the county is named for the Yankton band of Sioux Indians who lived in the area since the early 1700s. Pierre Dorion was the first non-native person to reside here. Dorion married a Yankton Sioux woman 20 years before the arrival of Lewis and Clark in 1804.

The first known white woman to visit Yankton County was Pelagie LaBarge, traveling on the Missouri River in 1847 on a steamboat piloted by her husband. Major William Lyman was the first known white settler in Yankton County in 1857. Lyman established a ferry across the James River along with a small trading post.

In 1861, the territorial government was established with the City of Yankton designated as the first capital of Dakota Territory. The year 1861 also saw the first official newspaper, “The Weekly Dakotian,” published in Yankton. Steamboat trade flourished here until 1873 when the first railroad line connected Yankton and Sioux City, Iowa.

The first school, held in the home of Dr. Abram Van Osdel, opened in December of 1862. Governor Howard selected Yankton County as the site for the hospital for the insane in September of 1878. Yankton lost the fight to retain the status of Territorial Capital in 1883 when the capital was moved to Bismarck, ND.

The rich history of Yankton County is preserved through many landmark buildings, historical sites and the written word.

Announcements

Auditor's Office - Election Info
Thursday, September 13, 2018

Absentee Voting will start on Friday, September 21, 2018. Sample Ballot Ballot Questions

Highway Department - Johnson Bridge Update
Tuesday, September 11, 2018

This bridge is currently closed to truck traffic, limited to one-lane traffic and is posted at 5 tons.

Yankton County Weed Dept - Noxious Weeds MUST Be Controlled
Tuesday, May 1, 2018

Weed Department announces that they will be begin inspections on May 1, 2018 for noxious weeds.

Highway Department Hours
Monday, April 30, 2018

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

Yankton County Emergency Management
Monday, January 1, 2018

You can text YCOEM to 85511 to receive up to date emergency information.

2018 Calendar
Monday, January 1, 2018
EMS - CPR Classes
Monday, January 1, 2018
Yankton County Commission Meeting Policy & Form
Thursday, November 23, 2017

Upcoming Meetings

5-Year Highway and Bridge Improvement Plan

Date: September 24, 2018
Time: 6:00 PM
Place: Commissioner's Meeting Room

Drainage Commission

Date: September 25, 2018
Time: 7:00 PM
Place: Commissioner's Meeting Room

Planning Commission Meeting

Date: September 26, 2018
Time: 7:00 PM
Place: Commissioner's Meeting Room

Commission Meeting

Date: October 2, 2018
Time: 4:00 PM
Place: Commissioner's Meeting Room

Planning Commission

Date: October 9, 2018
Time: 7:00 PM
Place: Commissioner's Meeting Room

Commission Meeting

Date: October 16, 2018
Time: 4:00 PM
Place: Commissioner's Meeting Room

Commission Meeting

Date: November 7, 2018
Time: 4:00 PM
Place: Commissioner's Meeting Room

Planning Commission

Date: November 13, 2018
Time: 7:00 PM
Place: Commissioner's Meeting Room

Commission Meeting

Date: November 20, 2018
Time: 4:00 PM
Place: Commissioner's Meeting Room

Commission Meeting

Date: December 4, 2018
Time: 4:00 PM
Place: Commissioner's Meeting Room

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

Yankton County © 2018. Developed by Intuvio Solutions.