The 816 area code covers Kansas City, Saint Joseph and 64 more places in Missouri.
Area code 816 is in Missouri, on Central Time. In the 816 area, phone numbers are given out most in Jackson County, then Buchanan and Cass counties. It has been in service since 1947. 975 covers the same area, so two neighbours can have different area codes.
- Where
- 8 counties in Missouri, mostly Jackson County, Buchanan County and Cass County
- Time zone
- Central Time
- In service since
- 1947, one of the original area codes
- Shares its area with
- 975 (since 2023)
- Prefixes in use
- 785
- How to dial
- Local calls need all 10 digits: 816-555-0142.
Find out who called you from an 816 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (816) number is on today, use our free carrier lookup.
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Kansas City holds 56% of the phone prefixes in area code 816.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 785 prefixes in use shows where 816 numbers are actually given out.
- Kansas City442 prefixes, 56%
- Saint Joseph40 prefixes, 5%
- Lees Summit20 prefixes, 3%
- Belton17 prefixes, 2%
- Liberty16 prefixes, 2%
- Blue Springs15 prefixes, 2%
- Cameron13 prefixes, 2%
- Odessa8 prefixes, 1%
Also served: Harrisonville, Excelsior Springs, Kearney and Smithville and 54 smaller places.
Southwestern Bell (AT&T) holds the most phone number prefixes in area code 816: 220 of 785.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 785 prefixes in use in 816 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| Southwestern Bell (AT&T)AT&T's landline company | 220 | 28% |
| T-MobileMobile network | 83 | 11% |
| AT&T MobilityMobile network | 59 | 8% |
| CenturyLinkLandline company | 50 | 6% |
| Teleport (AT&T)AT&T's business phone network | 31 | 4% |
| Level 3 (Lumen)Lumen's business and wholesale network | 30 | 4% |
| 41 other carriers | 312 | 40% |
74% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
816 has been split once and overlaid once since 1947.
1947
816 is one of the original North American area codes.
1997
On October 12, 1997, 660 splits off and takes part of the 816 area.
2023
On October 13, 2023, 975 is added on top of 816, so new numbers here can get either code.
An 816 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 816 are 913, 660 and 417.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
These are the questions people ask most about area code 816.
Where is area code 816?
816 covers Kansas City, Saint Joseph, Lees Summit and Belton and 62 more places in Missouri. In the 816 area, phone numbers are given out most in Jackson County, then Buchanan and Cass counties.
What state is area code 816 in?
Missouri. 816 is a Missouri area code on Central Time.
What cities use area code 816?
The places holding the most 816 prefixes are Kansas City, Saint Joseph, Lees Summit, Belton, Liberty, Blue Springs, Cameron and Odessa, out of 66 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 816?
No single phone company owns 816. NANPA's records show Southwestern Bell (AT&T) holds the most 816 prefixes, 220 of 785, followed by T-Mobile and AT&T Mobility. Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 816 in?
816 is on Central Time.
When did area code 816 start?
816 is one of the original North American area codes, in service since 1947.
Is 816 the same area as 975?
Yes. 975 (since 2023) covers the same ground as 816. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial an 816 number?
Local calls need all 10 digits: 816-555-0142.
Is 816 a toll-free number?
No. 816 is a regular area code for Kansas City and Saint Joseph in Missouri, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 816?
The closest are 913 (Kansas City, Kansas), 660 (Sedalia, Missouri), 417 (Springfield, Missouri) and 641 (Mason City, Iowa), measured between the centres of each area.
Who called me from an 816 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 816 a scam?
816 is a real Missouri area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.