About this number
(636) 274 is a landline based telephone number operated by Southwestern Bell and is located in zip code 63016 in the city of Cedar Hill, Missouri, which is in Jefferson County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 636 and Network Numbering Exchange (NXX - also known as a prefix) of 274. It has an Operating Company Number (OCN) of 9533. A Common Language Location Identifier (CLLI) of CDHLMO51RS0. As well as a Local access and transport area (LATA) of 520. Zip code 63016 has a population of 7,582 as of the 2010 census.