St. Charles County, Missouri

St. Charles County, Missouri, has 21 towns and 14 ZIP codes, in area codes 636 and 314.

Towns in St. Charles County, A to Z

Town	ZIP codes	Area codes
Augusta	63332	636
Dardenne Prairie	nearest63304, 63367, 63368	636
Defiance	63341	636
Flint Hill	nearest63385	636
Foristell	63348	636
Josephville	nearest63366, 63367, 63385	636
Lake Saint Louis	63367	636
Lake St. Louis	nearest63367, 63368, 63385	636
New Melle	63365	636
O Fallon	63366, 63368	636
O'Fallon	nearest63367, 63368	636
Portage Des Sioux	63373	636
Saint Charles	63301, 63302, 63303, 63304	636
Saint Peters	63376	636
St. Charles	nearest63044, 63045, 63303	636, 314, 557
St. Paul	nearest63366	636
St. Peters	nearest63303, 63376	636
Weldon Spring	nearest63005, 63304	636
Weldon Spring Heights	nearest63005, 63304, 63368	636
Wentzville	63385	636
West Alton	63386	636

ZIP codes in St. Charles County

63301Saint Charles636
63303Saint Charles636
63304Saint Charles636
63332Augusta636
63341Defiance636
63348Foristell636
63365New Melle636
63366O Fallon636
63367Lake Saint Louis636
63368O Fallon636
63373Portage Des Sioux636
63376Saint Peters636
63385Wentzville636
63386West Alton636

Area codes in St. Charles County

Area code 636
In service since May 22, 1999. Local calls are dialed with seven digits.
Area code 314
In service since 1947. Shares its area with 557. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Local numbers in area code 636

Looking for a phone number with a St. Charles County area code? These 636 numbers are for sale through Exclusive Digits. Portable to Verizon, AT&T, T-Mobile and all major US carriers.

We may earn a commission when you buy through our links. Numbers are sold and delivered by Exclusive Digits.

More area code 636 numbers on Exclusive Digits