Contact Information

Thank you for contacting  St. Louis County Government. We look forward to answering your questions as quickly and efficiently as possible. 

Our customer service line is 314-615-5000 or dial 311 from a mobile phone.  We accept calls between 8:00 am to 5:00 pm, Monday - Friday. 

Use our online contact form to send us a question or contact us by phone.  Online questions are sent to the appropriate County Department to ensure an accurate response is sent back to you.

Online Citizen Question Form

* Required

Addresses and Phone Information

Main Location:
41 South Central Avenue
Clayton, MO  63105
(314) 615-5000

Monday - Friday 8:00 - 5:00 p.m.

County Satellite Offices:

* Not all satellite offices provide walk in service and support for all County needs.  Please call us in advance of your visit. 


The Crossings At Northwest
Northwest Crossing
715 Northwest Plaza Drive
St. Ann, MO 63074
(314) 615-5000

Clarkson Wilson Centre
82 Clarkson Wilson Centre
Chesterfield, MO  63017
(314) 615-5000

Keller Plaza
4544 Lemay Ferry Road
St. Louis, MO  63129
(314) 615-5000


Click here for more information on County Facilities and Hours of Operations.