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Missouri currently utilizes 7 area codes. When first established by AT&T and the Bell System in 1947, 314 covered eastern Missouri including St. Louis and 816 covered northwestern Missouri including Kansas City. The most recently added was 557 in 2022 as an overlay to 314.
This is a list of telephone area codes in the state of Missouri. The area codes are allocated within the North American Numbering Plan (NANP). The two original area codes for Missouri in 1947 were 314 and 816.
Lookup area code information for CALIFORNIA, MO. Get the NPA NXX (area code and prefix) as well as much more data for CALIFORNIA, MO.
- 29
- 7,497
- 363
- 7,124
Area Code & Prefix. Click on the map or enter a United States, Canadian, or Caribbean address, city state, province or similar location to find the telephone area codes and prefixes for the area.
Our area code lookup makes it easy to find area codes in California. Includes area code listings of all California area codes with corresponding cities.
Area codes list for the United States, state Missouri. Reverse phone lookup, search by area code or region. Local time and map of Missouri.
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Jan 10, 1996 · List of all area codes in California, MO. California, MO area code map, list, and phone lookup.
