Missouri · Checked Against SSA's Locator October 1, 2026
SSA assigns Lake St. Louis, MO's ZIP code, 63367, to the St. Peters Social Security Office at 4800 Executive Ctr Pky, Saint Peters, about 11 miles away, phone (877) 405-3570, open Monday to Friday, 9:00 AM to 4:00 PM.
4800 Executive Ctr Pky
Saint Peters, MO 63376
Call (877) 405-3570 for the St. Peters Social Security OfficeDirections to the St. Peters Social Security Office
Fax: (833) 902-2498
| Monday | 9:00 AM to 4:00 PM |
|---|---|
| Tuesday | 9:00 AM to 4:00 PM |
| Wednesday | 9:00 AM to 4:00 PM |
| Thursday | 9:00 AM to 4:00 PM |
| Friday | 9:00 AM to 4:00 PM |
| Saturday and Sunday | Closed |
1215 Fern Ridge Pkwy, STE 100
Creve Coeur, MO 63141
Call (855) 820-0096 for the St. Louis West County Social Security OfficeDirections to the St. Louis West County Social Security Office
Fax: (833) 923-0556
| Monday | 9:00 AM to 4:00 PM |
|---|---|
| Tuesday | 9:00 AM to 4:00 PM |
| Wednesday | 9:00 AM to 4:00 PM |
| Thursday | 9:00 AM to 4:00 PM |
| Friday | 9:00 AM to 4:00 PM |
| Saturday and Sunday | Closed |
880 Rue St. Francois
Florissant, MO 63031
Call (866) 931-2871 for the St. Louis North County Social Security OfficeDirections to the St. Louis North County Social Security Office
Fax: (833) 950-3244
| Monday | 9:00 AM to 4:00 PM |
|---|---|
| Tuesday | 9:00 AM to 4:00 PM |
| Wednesday | 9:00 AM to 4:00 PM |
| Thursday | 9:00 AM to 4:00 PM |
| Friday | 9:00 AM to 4:00 PM |
| Saturday and Sunday | Closed |
9494 Manchester Rd
Rock Hill, MO 63119
Call (877) 714-0372 for the St. Louis-Southside Social Security OfficeDirections to the St. Louis-Southside Social Security Office
Fax: (833) 926-1831
| Monday | 9:00 AM to 4:00 PM |
|---|---|
| Tuesday | 9:00 AM to 4:00 PM |
| Wednesday | 9:00 AM to 4:00 PM |
| Thursday | 9:00 AM to 4:00 PM |
| Friday | 9:00 AM to 4:00 PM |
| Saturday and Sunday | Closed |
43 Prairie Dell Plz, Suite 5
Union, MO 63084
Call (866) 837-1063 for the Union Social Security OfficeDirections to the Union Social Security Office
Fax: (833) 950-2650
| Monday | 9:00 AM to 4:00 PM |
|---|---|
| Tuesday | 9:00 AM to 4:00 PM |
| Wednesday | 9:00 AM to 4:00 PM |
| Thursday | 9:00 AM to 4:00 PM |
| Friday | 9:00 AM to 4:00 PM |
| Saturday and Sunday | Closed |
650 Gravois Bluff Blvd
Fenton, MO 63026
Call (866) 331-2307 for the St. Louis Southwest Social Security OfficeDirections to the St. Louis Southwest Social Security Office
Fax: (833) 950-2938
| Monday | 9:00 AM to 4:00 PM |
|---|---|
| Tuesday | 9:00 AM to 4:00 PM |
| Wednesday | 9:00 AM to 4:00 PM |
| Thursday | 9:00 AM to 4:00 PM |
| Friday | 9:00 AM to 4:00 PM |
| Saturday and Sunday | Closed |
Straight-line distance from the center of Lake St. Louis (U.S. Census Gazetteer) to each office's address (U.S. Census Bureau geocoder). Office hours and phone numbers from SSA's office data, checked against SSA's Office Locator on October 1, 2026; confirm with SSA's Office Locator before you go.
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SSA assigns Lake St. Louis's ZIP code, 63367, to the St. Peters Social Security Office in Saint Peters. SSA assigns offices by ZIP code, so the office to use is the one listed for your ZIP.
| ZIP code | Office SSA assigns | Distance |
|---|---|---|
| 63367 | St. Peters Social Security Office for ZIP code 63367 | 11 miles |
ZIP code 63367 goes to the St. Peters Social Security Office, 4800 Executive Ctr Pky, Saint Peters.
Assigned offices from SSA's Office Locator, looked up by ZIP code on October 1, 2026. ZIP codes are those whose area overlaps Lake St. Louis (U.S. Census Bureau, 2020 ZIP Code Tabulation Areas). Distance is straight-line, from the center of the ZIP code to the office.
Where people in nearby communities go, and how far it is. Each area's office is the one SSA assigns to its ZIP codes.
St. Charles is about 15 miles east of central Lake St. Louis. SSA assigns its ZIP codes (63301 and 63303) to the St. Peters Social Security Office at 4800 Executive Ctr Pky, Saint Peters, open Monday to Friday, 9:00 AM to 4:00 PM.
Chesterfield is about 14 miles southeast of central Lake St. Louis. SSA assigns its ZIP codes (63005 and 63017) to the St. Louis West County Social Security Office at 1215 Fern Ridge Pkwy, STE 100, Creve Coeur, open Monday to Friday, 9:00 AM to 4:00 PM.
O'Fallon is about 3.5 miles east of central Lake St. Louis. SSA assigns its ZIP codes (63366 and 63368) to the St. Peters Social Security Office at 4800 Executive Ctr Pky, Saint Peters, open Monday to Friday, 9:00 AM to 4:00 PM.
Troy is about 16 miles northwest of central Lake St. Louis. SSA assigns its ZIP code, 63379, to the Hannibal Social Security Office at 155 Forrest Drive, Hannibal, open Monday to Friday, 9:00 AM to 4:00 PM. The St. Peters Social Security Office is closer to central Troy (about 24 miles, against 57 miles), but it isn't the office SSA assigns.
St. Peters is about 9.8 miles east of central Lake St. Louis. SSA assigns its ZIP code, 63376, to the St. Peters Social Security Office at 4800 Executive Ctr Pky, Saint Peters, open Monday to Friday, 9:00 AM to 4:00 PM.
Town and Country is about 20 miles southeast of central Lake St. Louis. SSA assigns its ZIP codes (63131 and 63141) to the St. Louis West County Social Security Office at 1215 Fern Ridge Pkwy, STE 100, Creve Coeur, open Monday to Friday, 9:00 AM to 4:00 PM.
Wildwood is about 15 miles southeast of central Lake St. Louis. Its ZIP codes are split between offices: 63005 and 63011 go to the St. Louis West County Social Security Office in Creve Coeur; 63038 and 63040 go to the St. Louis Southwest Social Security Office in Fenton.
Maryland Heights is about 18 miles east of central Lake St. Louis. SSA assigns its ZIP codes (63043 and 63146) to the St. Louis West County Social Security Office at 1215 Fern Ridge Pkwy, STE 100, Creve Coeur, open Monday to Friday, 9:00 AM to 4:00 PM.
Warrenton is about 19 miles west of central Lake St. Louis. SSA assigns its ZIP code, 63383, to the St. Peters Social Security Office at 4800 Executive Ctr Pky, Saint Peters, open Monday to Friday, 9:00 AM to 4:00 PM. The Union Social Security Office is closer to central Warrenton (about 29 miles, against 30 miles), but it isn't the office SSA assigns.
Dardenne Prairie is about 4.6 miles southeast of central Lake St. Louis. SSA assigns its ZIP code, 63368, to the St. Peters Social Security Office at 4800 Executive Ctr Pky, Saint Peters, open Monday to Friday, 9:00 AM to 4:00 PM.
SSA asks you to make an appointment before you visit an office. You can schedule one online on SSA's appointment page by answering a few questions; the appointment may be by phone or in person, and you can change or cancel it from the confirmation email or text.
To book by phone, call the St. Peters Social Security Office at (877) 405-3570, or SSA's national number, 1-800-772-1213 (TTY 1-800-325-0778), Monday through Friday, 8 a.m. to 7 p.m. local time. Help is available in English, Spanish and other languages.
See office hours and appointments for the best times to call and visit.
You can often replace a card, update your address or get a benefit letter online with a my Social Security account. If you need to go in, check what to bring.
There isn't an office in Lake St. Louis, MO itself. The closest is the St. Peters Social Security Office, 4800 Executive Ctr Pky, Saint Peters, MO 63376, about 11 miles away.
SSA assigns Lake St. Louis's ZIP code, 63367, to the St. Peters Social Security Office in Saint Peters. SSA assigns offices by ZIP code, and the assigned office isn't always the closest one. Look up your ZIP code in the table on this page or in SSA's Office Locator.
The St. Peters Social Security Office is open Monday to Friday, 9:00 AM to 4:00 PM, according to SSA's office data (checked against SSA's Office Locator on October 1, 2026). Offices close on weekends and federal holidays.
SSA lists (877) 405-3570 for the St. Peters Social Security Office. SSA's national number is 1-800-772-1213.
Schedule online on SSA's appointment page, where the appointment may be by phone or in person, or call the St. Peters Social Security Office at (877) 405-3570 or SSA at 1-800-772-1213 (TTY 1-800-325-0778), Monday through Friday, 8 a.m. to 7 p.m. local time. SSA asks you to make an appointment before visiting an office.
Every Social Security office in Missouri
Independent site, not affiliated with the Social Security Administration. Office addresses, phone numbers and hours come from SSA's public office data. To apply for benefits or manage your record, go to SSA directly at ssa.gov.