COVID-19 LIBRARY CLOSURE EXTENDED - We have extended our temporary closure to align with recommendations from the St. Charles County Department of Public Health and area school district closings. Branches will be closed at least until April 27. Learn more here.

Branches & Hours -

Deer Run Branch

Branch Hours
Monday - Thursday   9:00 am - 9:00 pm
Friday - Saturday      9:00 am - 6:00 pm
Sunday                    1:00 - 5:00 pm

Holiday Closing

Branch Phone
(636) 978-3251 or (636) 980-1332

Ask Us

1300 North Main | O'Fallon 63366-2013
Get directions to branch

Branch Manager: Cindy Miller |
Youth Services Supervisor: Jessie Park |

Branch Amenities

Branch History

Come visit Deer Run Branch!  Our branch opened in 1995.  We have over 90,000 items housed in a branch that’s nearly 12,000 sq ft.  For faster service when you're on the go call ahead for curbside service. Pick up your reserves and/or materials you've called ahead to request without ever leaving your car!  The Deer Run staff looks forward to introducing you to the materials and services we offer.