Area code 816

Where area code 816 is

NANPA lists 816 as an in-service geographic area code for Missouri, first put into service on January 1, 1947. It is an overlay: 816 and 975 cover the same territory, so neighbors on the same street can have different area codes. It is in the Central time zone. The places with the most assigned exchanges include Kansas City, St. Joseph, Lee's Summit, Belton, and Liberty. By population, its largest named places are Kansas City, Lee's Summit, St. Joseph, Blue Springs, and Liberty.

Where 816 numbers are local

816 holds 19% of the 4,168 central office codes assigned in Missouri, the 2nd most of the state's 9 codes. 67 Census places could be matched to rate centers with 816 exchanges; the most populous are Kansas City (516,000), Lee's Summit (106,000), St. Joseph (71,098), and Blue Springs (61,246). Each place page lists the exact prefixes and carriers for that town.

Ten-digit and seven-digit dialing in 816

According to NANPA's dialing-plan data, local calls within 816 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit permissible at service provider discretion."

Who holds 816 exchanges

52 carriers hold the 785 central office codes assigned in 816. Southwestern Bell has the most, with 220 (28%). 584 of the codes (74%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Local calling areas in 816

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 816 has codes in 73 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

Number supply in 816

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 785 are assigned in 816, 98% of 800. 84 were assigned in 2020 or later.

Getting a 816 number for your business

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Porting a number you already use in area code 816 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

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