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636 Area Code 🌍☎️

Area Code Profile · Missouri

The 636 area code is located in the state of Missouri and covers 78 cities, serving a total population of approximately 611,509. Major cities covered by the 636 area code include O'Fallon, St. Charles, St. Peters, Chesterfield, Wildwood (which represents the most populated areas). There are a total of 422 telephone prefix exchanges in this area code, which support an estimated 4,220,000 active or assignable phone numbers. These prefix lines are operated by 32 distinct carriers, with O'Fallon as the primary rate center location.

Central Time78 Cities422 Prefixes

Reverse Phone Lookup in O'Fallon, Missouri

Unmask unknown callers, verify telemarketing reports, and view detailed owner information for any phone number beginning with area code (636).

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Provide any 10-digit phone number starting with the (636) area code.

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3

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Neighborhood Demographics

Calculated demographics and census summary estimations for area code 636.

33.8 y/oMedian Age
$56,800Median Income
$373,000Median Home Value
611,509Total Population

Telemarketer Complaints

Most recent complaints and comments for phone numbers beginning with 636.

Did you receive an unwanted call from a (636) phone number?

Help the community identify spammers by filing a comment.

(636) 829-9534May 16, 2026Scam / Fraud
Robocall claiming to be from the IRS. Stated that my Social Security Number has been flagged and suspended. Asked to press 1 to speak with an agent. Obvious phishing scam.
See Details
(636) 842-9551May 20, 2026Robocall
Received a silent call. When I answered, there was just dead air for 5 seconds before it automatically disconnected. Likely an automated system testing for active numbers.
See Details
(636) 855-9568May 19, 2026Telemarketer
Offered an unsolicited quote for local roofing and home energy services. They knew my area code but when I asked how they got my number, they hung up immediately.
See Details

Cities in the 636 Area Code

The most populous cities in area code 636 are: O'Fallon (79,329), St. Charles (65,794), St. Peters (52,575), Chesterfield (47,484), and Wildwood (35,517).

Other cities in the 636 area code include:

Ballwin, Wentzville, Arnold, Manchester, Lake St. Louis, Washington, Festus, Dardenne Prairie, Town and Country, Troy, Union, Eureka, Ellisville, Murphy, Sunset Hills, Warrenton, Pacific, Valley Park, De Soto, Barnhart, Pevely, Weldon Spring, Crystal City, St. Clair, Imperial.

CityPopulation% in Area Code
O'Fallon79,329100%
St. Charles65,79499%
St. Peters52,575100%
Chesterfield47,48479%
Wildwood35,517100%
Ballwin30,404100%
Wentzville29,070100%
Arnold20,80899%
Manchester18,094100%
Lake St. Louis14,545100%
Washington13,982100%
Festus11,602100%
Dardenne Prairie11,494100%
Town and Country10,8157%
Troy10,540100%
Union10,204100%
Eureka10,189100%
Ellisville9,133100%
Murphy8,690100%
Sunset Hills8,49612%

Showing top 20 of 78 cities.

What Time Zone is Area Code 636?

Central Time Zone

Abbreviation: CT · UTC Offset: UTC-6

The 636 area code lies within the Central Time Zone (CT, UTC-6).

Nearby Area Codes

235Columbia, Missouri314St. Louis, Missouri417Springfield, Missouri557St. Louis, Missouri573Columbia, Missouri660Sedalia, Missouri816Kansas City, Missouri975Kansas City, Missouri

Phone Prefixes in the 636 Area Code

422 prefixes found · 32 carriers · 46 rate centers

PrefixCarrierRate Center
(636) 200ONVOY, LLC - MOMANCHESTER
(636) 201NEW CINGULAR WIRELESS PCS, LLC - ILWARRENTON
(636) 202MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MOWARRENTON
(636) 203MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MOFENTON
(636) 204ONVOY, LLC - MOWARRENTON
(636) 205LEVEL 3 COMMUNICATIONS, LLC - MOWINFIELD
(636) 206AT&T CORP.ST CHARLES
(636) 207SOUTHWESTERN BELLMANCHESTER
(636) 208NEW CINGULAR WIRELESS PCS, LLC - ILFSSCRSTLCY
(636) 209CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOFSSCRSTLCY
(636) 210NEW CINGULAR WIRELESS PCS, LLC - ILUNION
(636) 212CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOMAXVILLE
(636) 213T-MOBILE USA, INC.WARRENTON
(636) 214T-MOBILE USA, INC.CHESTERFLD
(636) 215CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOMAXVILLE
(636) 216ONVOY, LLC - MOCHESTERFLD
(636) 218NEW CINGULAR WIRELESS PCS, LLC - ILMAXVILLE
(636) 219T-MOBILE USA, INC.ST CHARLES
(636) 220CHARTER FIBERLINK - MISSOURI, LLC - MOMANCHESTER
(636) 221SOUTHWESTERN BELLWASHINGTON
(636) 222CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOCEDAR HILL
(636) 223AT&T - LOCALIMPERIAL
(636) 224WINDSTREAM NUVOX MISSOURI, LLCHERCUMPVLY
(636) 225SOUTHWESTERN BELLVALLEYPARK
(636) 226SOUTHWESTERN BELLVALLEYPARK
(636) 227SOUTHWESTERN BELLMANCHESTER
(636) 228CENTURYTEL MISSOURI LLC (SOUTHWEST)DBA CENTURYLINKAUGUSTA
(636) 229MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MOHARVESTER
(636) 230SOUTHWESTERN BELLMANCHESTER
(636) 231WINDSTREAM NUVOX MISSOURI, LLCWASHINGTON
(636) 232LEVEL 3 COMMUNICATIONS, LLC - MOFSSCRSTLCY
(636) 233CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOST CHARLES
(636) 234LEVEL 3 COMMUNICATIONS, LLC - MOUNION
(636) 235LEVEL 3 COMMUNICATIONS, LLC - MOWARRENTON
(636) 236T-MOBILE USA, INC.CHESTERFLD
(636) 237MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MOCHESTERFLD
(636) 238MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MOMANCHESTER
(636) 239SOUTHWESTERN BELLWASHINGTON
(636) 240CENTURYTEL MISSOURI LLC (SOUTHWEST)DBA CENTURYLINKOFALLON
(636) 241CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOWASHINGTON
(636) 242CENTURYTEL MISSOURI LLC (SOUTHWEST)DBA CENTURYLINKMARTHASVL
(636) 243LEVEL 3 COMMUNICATIONS, LLC - MODE SOTO
(636) 244CHARTER FIBERLINK - MISSOURI, LLC - MOHARVESTER
(636) 245NEW CINGULAR WIRELESS PCS, LLC - ILMAXVILLE
(636) 246ONVOY, LLC - MOST CHARLES
(636) 247SOUTHWESTERN BELLCHESTERFLD
(636) 248CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOST PETERS
(636) 249METROPCS, INC.UNION
(636) 250ORCHARD FARM TEL. CO.ORCHARDFRM
(636) 251CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOFORISTELL
(636) 252T-MOBILE USA, INC.CHESTERFLD
(636) 253T-MOBILE USA, INC.HIGH RIDGE
(636) 254CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOMANCHESTER
(636) 255SOUTHWESTERN BELLST CHARLES
(636) 256SOUTHWESTERN BELLMANCHESTER
(636) 257SOUTHWESTERN BELLPACIFIC
(636) 258ORCHARD FARM TEL. CO.ORCHARDFRM
(636) 259T-MOBILE USA, INC.GRAYSUMMIT
(636) 260ONVOY, LLC - MOST CHARLES
(636) 261SOUTHWESTERN BELLHARVESTER
(636) 262T-MOBILE USA, INC.CHESTERFLD
(636) 263AT&T - LOCALHARVESTER
(636) 264LEVEL 3 COMMUNICATIONS, LLC - MOWINFIELD
(636) 265CHARTER FIBERLINK - MISSOURI, LLC - MODARDENNE
(636) 266LEVEL 3 COMMUNICATIONS, LLC - MOWASHINGTON
(636) 267ONVOY, LLC - MOANTONIA
(636) 268ONVOY, LLC - MOCHESTERFLD
(636) 269ONVOY, LLC - MOMAXVILLE
(636) 270ONVOY, LLC - MOWARE
(636) 271SOUTHWESTERN BELLPACIFIC
(636) 272CENTURYTEL MISSOURI LLC (SOUTHWEST)DBA CENTURYLINKOFALLON
(636) 273SOUTHWESTERN BELLPOND
(636) 274SOUTHWESTERN BELLCEDAR HILL
(636) 275CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOMAXVILLE
(636) 277PEERLESS NETWORK OF MISSOURI, LLC - MOST CHARLES
(636) 278CENTURYTEL MISSOURI LLC (SOUTHWEST)DBA CENTURYLINKST PETERS
(636) 279CENTURYTEL MISSOURI LLC (SOUTHWEST)DBA CENTURYLINKST PETERS
(636) 280ONVOY, LLC - MOEUREKA
(636) 281CENTURYTEL MISSOURI LLC (SOUTHWEST)DBA CENTURYLINKOFALLON
(636) 282SOUTHWESTERN BELLMAXVILLE
(636) 283TELEPORT COMMUNICATIONS AMERICA, LLC - MOWASHINGTON
(636) 284NEW CINGULAR WIRELESS PCS, LLC - ILHARVESTER
(636) 285SOUTHWESTERN BELLCEDAR HILL
(636) 287SOUTHWESTERN BELLMAXVILLE
(636) 288NEW CINGULAR WIRELESS PCS, LLC - ILST CHARLES
(636) 289BANDWIDTH.COM CLEC, LLC - MOHAWK POINT
(636) 290T-MOBILE USA, INC.TROY
(636) 292TELEPORT COMMUNICATIONS AMERICA, LLC - MOCHESTERFLD
(636) 293T-MOBILE USA, INC.OFALLON
(636) 294CHARTER FIBERLINK - MISSOURI, LLC - MOOFALLON
(636) 295CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOTROY
(636) 296SOUTHWESTERN BELLMAXVILLE
(636) 297CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOWARRENTON
(636) 299AT&T - LOCALCHESTERFLD
(636) 300SOUTHWESTERN BELLHARVESTER
(636) 303TELNYX LLCUNION
(636) 305SOUTHWESTERN BELLFENTON
(636) 306METROPCS, INC.HERCUMPVLY
(636) 310CHARTER FIBERLINK - MISSOURI, LLC - MOHILLSBORO
(636) 312NEW CINGULAR WIRELESS PCS, LLC - ILOFALLON

Showing first 100 of 422 prefixes.

Frequently Asked Questions

Where is area code 636?
Area code 636 is located in Missouri, covering cities including O'Fallon, St. Charles, St. Peters.
What time zone is area code 636?
Area code 636 is in the Central Time Zone (CT, UTC-6).
What state is area code 636?
Area code 636 is in Missouri.