A house for rent in St. Charles or O'Fallon draws calls from many strangers.
List it with a 636 number, take the calls on your own phone and burn the number once the lease is signed.
Local 636 numbers
Get a 636 phone number for St. Charles and O'Fallon.
Ask for 636 when you create a number on ExpressNumber, and the number you hand out reads as St. Charles, O'Fallon and Chesterfield. It rings the phone you already carry, and you burn it in one tap.
$0 todayLive in about a minute
This is how you get a 636 number.
- Start your 7 days free and open Create a number.
- Type 636 as the area code and give the number a name.
- Hand it out. Calls ring the phone you already carry, and texts land in your inbox.
- Burn it in one tap when you are done. Calls and texts to it stop at once.
9:41
Your numbers
House for rent
(636) 555-0127
Forwarding
Used boat
(636) 555-0162
Texts only
Roofing quote
(636) 555-0106
Blocked
People ask for 636 when the search is in St. Charles, O'Fallon or Chesterfield.
A used truck or a boat for sale near Wentzville or St. Peters brings texts from buyers all week.
Post a 636 number with the photos, set it to Texts only and keep your own number off the ad.
A moving job or a roofing quote in Chesterfield or Washington ends in follow-up calls.
Give each company its own 636 number. Block the ones you did not choose.
This is where a 636 number is from.
Area code 636 took every exchange of the old 314 area outside a list of 23 exchanges around the City of St. Louis, as the numbering administrator puts it, and its map labels St. Charles, O'Fallon, Wentzville, Chesterfield and Washington.
St. Louis and its inner suburbs, such as Kirkwood, Florissant and Webster Groves, kept 314.
St. Charles, O'Fallon and Chesterfield, MO
Area code 636 and the codes around it, oldest first.
1947
314
Split from
1999
636
This code
- O'Fallon
- St. Charles
- St. Peters
- Wentzville
- Chesterfield
- Manchester
- Washington
- Troy
- Festus
- Union
- Eureka
- Warrenton
These are the facts about area code 636.
From the public records of the body that runs US phone numbering, read October 21, 2026.
- Place
- St. Charles, O'Fallon and Chesterfield, Missouri
- In service since
- 1999
- Local calls are dialed with
- Seven digits
- Shares its area with
- No other code
- Split from
- 314 (1947)
636 was split from 314 and entered service on May 22, 1999. The Missouri Public Service Commission ordered the two-way geographic split on July 22, 1998, in case TO-98-212.
Using 636 became mandatory on February 26, 2000. A local call inside 636 is dialed with seven digits, and a local call to 314 takes ten.
Try it free for 7 days.
Then pick the plan that fits how many numbers you hand out.
Basic
7 days free$9.99/mo
- 5 numbers, one for each site, store or dealer
- 100 forwarded minutes a month
- Burn a number in one tap
- Extra numbers $1 a month each
Pro
7 days free$29.99/mo
- 100 numbers
- 1,000 forwarded minutes a month
- A number per vendor, client or listing
- Extra numbers 50¢ a month each
$0 today. Monthly plans, cancel any time.
People ask these questions about getting a 636 number.
More in the full FAQ.
Create a number in your dashboard, type 636 as the area code and give it a name, such as House for rent. It is live in about a minute. You do not need to live in Missouri: calls ring the phone you already carry.
Yes, for taking calls and texts. A roofer, a tutor or a mover in St. Charles can put a 636 number on the flyer and the website, take the calls on their own phone and burn the number when the job is done.
Yes. The 636 area takes in St. Charles, O'Fallon, St. Peters, Wentzville and Chesterfield.
No. Your numbers are receive-only: they take calls and texts, and they never make them. You answer calls on your own phone, and you cannot reply to a text from the inbox.
You get 7 days free and pay $0 today. After 7 days your plan starts: $9.99 a month for Basic or $29.99 a month for Pro. Cancel before then and you pay nothing.
More area codes
Every fact on this page comes from public numbering records.
The state, the dates and the related codes are rows of the North American Numbering Plan Administrator's area code database. The places are from its planning letters and the state’s own pages. Read October 21, 2026.
Put 636 on a number you can burn.
Hand out a number you can burn. Keep the one your family calls.
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