St. Louis, Missouri ZIP Codes
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This is the complete guide to St. Louis, Missouri ZIP codes — all 68 codes in one place, from 63101 to 63199. If you have been searching for the zip code of St. Louis Missouri USA, the full list below covers every delivery area in the city.
St. Louis lies primarily in St. Louis City, Missouri. Because ZIP codes follow mail delivery routes rather than neighborhood lines, different parts of St. Louis use different codes. The list below is sorted numerically, and our free tools can pinpoint the exact ZIP code — including the ZIP+4 add-on — for any St. Louis address.
Complete List of St. Louis ZIP Codes
All 68 st. louis zip codes, sorted from lowest to highest (63101 to 63199):
About St. Louis ZIP Codes
St. Louis is served by 68 ZIP codes (63101–63199). USPS draws ZIP code boundaries around delivery routes, so a code can cover a compact downtown district, a spread-out suburb, or a single high-volume mailer.
Most of St. Louis sits in St. Louis City, though parts of the city reach into St. Louis. That is one reason ZIP codes here do not stop at the city limit — a St. Louis mailing address can sit in a neighboring county and still carry a St. Louis ZIP code.
Mailing to St. Louis? Using the correct ZIP code — and the ZIP+4 add-on where it matters — keeps letters and packages moving without delays or returns. Before you send, you can confirm any St. Louis address with our free Address Verification tool, and find the full 9-digit code with the ZIP+4 Lookup.
How to Find Your St. Louis ZIP Code
Enter a St. Louis street address to get its exact 5-digit ZIP code instantly.
Look up St. Louis, Missouri to see the full list of ZIP codes used across the city.
Explore ZIP codes for every covered city in Missouri on the state page.
Frequently Asked Questions
How many ZIP codes does St. Louis have?
St. Louis has 68 ZIP codes, ranging from 63101 to 63199. The complete list is on this page.
What is the ZIP code of St. Louis, Missouri?
There is no single ZIP code for St. Louis — the city uses 68 ZIP codes (63101 to 63199). Enter your street address in our ZIP Code by Address tool to find your exact one.
What county is St. Louis, Missouri in?
St. Louis is primarily in St. Louis City, Missouri, and also extends into St. Louis.
What is the ZIP code range for St. Louis?
ZIP codes in St. Louis start at 63101 and go up to 63199. Codes are assigned by delivery area, so the lowest codes generally sit closest to the city center and rise as you move outward.
Why does St. Louis have 68 different ZIP codes?
The Postal Service creates a new ZIP code whenever a delivery area grows too large for one code to handle efficiently. A city the size of St. Louis has many delivery routes — neighborhoods, business districts, and high-volume mailers each need their own code so mail can be sorted and delivered accurately.
How do I find my ZIP+4 code in St. Louis?
Use our free ZIP+4 Lookup tool — enter your St. Louis street address to get the full 9-digit code.
More Cities in Missouri
ZIP codes for other cities in Missouri:
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