Election Authority

Last Day to Register to Vote in the Nov. 6 General Election is Wednesday, Oct. 10


  • St. Charles County residents may register in person at the Election Authority office at 397 Turner Blvd. in St. Peters. The office will be closed Oct. 8 for Columbus Day.
  • Residents may register while obtaining services from state agencies such as the Department of Motor Vehicles, Division of Family Services, Military Recruitment or WIC.
  • Other options for registering to vote can be found in the Helpful Resources section located on this page.

Absentee Voting in the Nov. 6 General Election Begins Tuesday, Sept. 25


St. Charles County Election Authority
397 Turner Blvd., St. Peters, MO 63376
8 a.m.–5 p.m., Monday–Friday, Sept. 25–Nov. 5
8:30 a.m.–12:30 p.m., Saturday, Oct. 27
8:30 a.m.–12:30 p.m., Saturday, Nov. 3
The office will be closed Oct. 8 for Columbus Day.

Additional information regarding absentee voting can be found in the Written Requests for Absentee Ballot Applications section located on this page.

Written Requests for Absentee Ballot Applications


Written requests for absentee ballots must be received in the Election Authority’s office no later than 5 p.m. the Wednesday before any election. You may download, complete and return the Application for Absentee Ballot for St. Charles County, Missouri, or your request must contain the following information:

  • Your full name
  • Address where you live
  • Address where you would like the ballot to be mailed (if different)
  • Reason for voting absentee
  • The date of the election
  • Your political party preference, if you are applying for a Primary Election Ballot
  • Your signature

Directions to the Election Authority


  • We are located off Highways 70 and 79 in St. Peters.
  • Exit off of Highway 70 and head north on Highway 79.
  • Get in the right lane and bear right onto the North Outer Road exit.
  • Go straight at the stop sign, crossing over the North Outer Road.
  • Enter onto Turner Boulevard. The Election Authority office is the second building on the right.

Helpful Resources