Area code 660 covers Sedalia and surrounding areas in Missouri. It was activated in 1997 as an overlay of area code 816. For the full picture, see all Missouri area codes.
| State | Missouri |
|---|---|
| Primary city | Sedalia |
| Cities also served | Sedalia, Warrensburg, Kirksville, Moberly, Marshall, Chillicothe, Maryville, Clinton |
| Time zone | Central (UTC-6 / UTC-5 DST) |
| Year established | October 12, 1997 |
| Original 1947 NPA? | No |
| Parent code | 816 |
| Overlay codes | None |
| Currently in use? | Yes, actively assigned |
| Ten-digit dialing required? | Yes |
Cities Served by Area Code 660
Area code 660 serves Northern and western Missouri, covering approximately 42 counties including Pettis, Johnson, Adair, Saline, Nodaway, Henry, and Cooper counties, including the following cities and communities:
- Sedalia
- Warrensburg
- Kirksville
- Moberly
- Marshall
- Chillicothe
- Maryville
- Clinton
Nearby area codes covering the same broader region include: 816, 975, 573, 314, 417, 636.
How to Get a 660 Phone Number
There are three ways to get a phone number with the 660 area code, each suited to a different need:
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Browse 660 Numbers →- Buy from a premium-number specialist. Companies that hold curated inventories of specific area codes can sell you a 660 number directly, often with a one-time fee and ownership transferred to you (no recurring carrier fees). This is the option for picking a specific memorable number, or for getting an area code that most carriers won’t let you request. Browse our 660 inventory.
- Sign up with a VoIP carrier. Voice-over-IP services (such as Google Voice, OpenPhone, Grasshopper, and many others) can typically provision a 660 number on request, especially for active overlay codes. You won’t usually get to pick the specific number, but you’ll get a working line in the area code. This is the cheapest option for anyone who doesn’t need a particular number.
- Port an existing 660 number. If you already have a 660 phone number with another carrier, you can transfer it (port it) to a new service provider while keeping the number. This works for landlines, cell phones, and VoIP services, though landlines outside of Missouri sometimes can’t accept inbound ports of 660 numbers due to 911 routing rules.
Looking for a 660 number? 212areacode.com offers premium 660 numbers for Sedalia, Missouri — choose your number, port it to any carrier in 3–5 business days, and pay a one-time fee with no monthly charges. Browse available 660 numbers →
Frequently Asked Questions
Is the 660 area code still in use?
Yes. 660 is actively assigned to new phone lines in Northern and western Missouri, covering approximately 42 counties including Pettis, Johnson, Adair, Saline, Nodaway, Henry, and Cooper counties.
What is the parent area code of 660?
Area code 660 is an overlay of 816. Both codes serve the same region of Missouri.
Can I get a 660 number if I don't live in Missouri?
Yes. Phone numbers are no longer tied to a physical address. With VoIP service or a number broker, you can hold a 660 number from anywhere in the world. The number routes to whatever device or carrier you specify.
Is 660 a scam area code?
No. 660 is a legitimate, active area code for Northern and western Missouri, covering approximately 42 counties including Pettis, Johnson, Adair, Saline, Nodaway, Henry, and Cooper counties. Like any area code, scammers occasionally spoof 660 caller IDs, but the code itself is heavily used by real Missouri businesses, government offices, and residents.
What cities are covered by the 660 area code?
Area code 660 covers cities across northern and western Missouri including Sedalia, Warrensburg, Kirksville, Moberly, Marshall, Chillicothe, Maryville, and Clinton, spanning approximately 42 counties.
When did area code 660 go into service?
Area code 660 went into service on October 12, 1997, split from area code 816. A permissive dialing period ran until April 19, 1998.
Does area code 660 have any overlays?
No. As of 2026, area code 660 has no overlay. It is the sole area code serving its territory and is not near exhaustion, with low overall number utilization.
Do I need to dial ten digits for local calls in the 660 area code?
Yes. Ten-digit dialing became mandatory in the 660 area code on October 24, 2021, due to the nationwide implementation of 988 as the Suicide and Crisis Lifeline, which conflicted with existing 988-XXXX seven-digit numbers in the region.
