Welcome to Warren County!

Attention: All county offices will be closed Friday, December 22nd and Monday, December 25th for Christmas. County residents, as a reminder the Collector's office along with all other county offices will be closed December 30th and 31st as well as January 1st, 2018 due to the weekend and holiday. Thank you for your understanding and Happy Holidays!

Warren County is on the western edge of the St. Louis Metropolitan area, covering 438 square miles. It is a part of the Missouri Rhineland.

Established in 1833, and named after General Joseph Warren, the county's location has kept it visible during the westward expansion and beyond.

We will be adding to this website as more departments establish an internet presence, and will keep the upcoming agendas, as well as any news that affects the citizens of Warren County posted via the links on the left of the page.

Please feel free to direct any comments or questions to the Site Administrator, and they will be answered or forwarded to the correct people as soon as possible.