Augusta
Monday, Tuesday, Thursday: 9:00 AM - 7:00 PM
Saturday: 9:00 AM - Noon
- (636) 228-4855
- Augusta, MO
Boone's Trail
Monday, Tuesday, Thursday: 9:00 AM - 7:00 PM
Saturday: 9:00 AM - Noon
- (636) 398-6200
- Wentzville, MO
Cliff View
Monday - Thursday: 9:00 AM - 8:00 PM
Friday & Saturday: 9:00 AM - 5:00 PM
- (636) 244-3962
- Wentzville, MO
Corporate Parkway
Monday - Thursday: 9:00 AM - 8:00 PM
Friday & Saturday: 9:00 AM - 5:00 PM
Sunday: 1:00 - 5:00 PM
- (636) 332-8280
- Wentzville, MO
Deer Run
Monday - Thursday: 9:00 AM - 8:00 PM
Friday & Saturday: 9:00 AM - 5:00 PM
- (636) 978-3251
- O'Fallon, MO
Kathryn Linnemann
Monday - Thursday: 9:00 AM - 8:00 PM
Friday & Saturday: 9:00 AM - 5:00 PM
Sunday: 1:00 - 5:00 PM
- (636) 946-6294
- St. Charles, MO
Kisker Road
Monday - Thursday: 9:00 AM - 8:00 PM
Friday & Saturday: 9:00 AM - 5:00 PM
- (636) 447-7323
- St. Charles, MO
McClay
Monday - Thursday: 9:00 AM - 8:00 PM
Friday & Saturday: 9:00 AM - 5:00 PM
- (636) 441-7577
- St. Charles, MO
Middendorf-Kredell
Monday - Thursday: 9:00 AM - 8:00 PM
Friday & Saturday: 9:00 AM - 5:00 PM
Sunday: 1:00 - 5:00 PM
- (636) 978-7926
- O'Fallon, MO
Spencer Road
Monday - Thursday: 9:00 AM - 8:00 PM
Friday & Saturday: 9:00 AM - 5:00 PM
Sunday: 1:00 - 5:00 PM
- (636) 441-0522
- St. Peters, MO
WingHaven®
Monday - Thursday: 9:00 AM - 8:00 PM
Friday & Saturday: 9:00 AM - 5:00 PM
- (636) 561-3385
- O'Fallon, MO
Library Closing Information
2026 Holiday Closings
Martin Luther King Jr. Day - Monday, January 19
Staff Training Day - Wednesday, January 28 (delayed start 2 pm)
Presidents' Day - Monday, February 16
Easter Holiday - Sunday, April 05
Staff Development Day - Friday, April 24
Memorial Day - Monday, May 25
Juneteenth - Friday, June 19
Independence Day - Saturday, July 4 & Sunday, July 5
Labor Day - Monday, September 7
Columbus Day/ Indigenous Peoples' Day - Monday, October 12
Veterans Day - Wednesday, November 11
Thanksgiving Day - Thursday, November 26 & Friday, November 27
For the Holidays - Thursday, December 24 & Friday, December 25
New Year's Holiday - Thursday, December 31 (Close at 5 pm) & Friday, January 1, 2027