660 Area Code: Complete Guide to Location, History, Cities & Scam Alerts (2026)

Area code 660

The 660 area code serves northern and western Missouri, including Sedalia, Chillicothe, Kirksville, and Marshall. Missouri created area code 660 on October 12, 1997, by splitting it from area code 816 to meet the growing demand for phone numbers caused by the rise of cell phones and pagers.

What Is the 660 Area Code? (At a Glance)

DetailInformation
StateMissouri, USA
Region coveredNorthern and western Missouri
CreatedOctober 12, 1997
Split fromArea code 816
Time zoneCentral Time (CST/CDT)
Major citiesSedalia, Chillicothe, Kirksville, Marshall, Moberly, Maryville
Overlay codeNone (single area code, no overlay)
Neighboring area codes816, 573, 417, 314

The 660 area code serves a specific geographic region rather than multiple non-adjacent locations. If you receive a call or text from a 660 number, the caller likely uses a line assigned to northern or western Missouri.

Where Is the 660 Area Code Located?

Area code 660​ surrounds the Kansas City metro area, which uses area code 816, on its north, east, and south sides. It covers a large, mostly rural part of Missouri and serves northern and western Missouri under the North American Numbering Plan. Additionally, the 660 area code split from 816 on October 12, 1997.

Cities and Towns Served by the 660 Area Code

Some of the most notable communities using the area code 660 in missouri​ include:

  • Sedalia – Pettis County, home to the Missouri State Fair
  • Chillicothe – Livingston County, nicknamed “Home of Sliced Bread”
  • Kirksville – Adair County, home to Truman State University
  • Marshall – Saline County seat
  • Moberly – Randolph County
  • Maryville – Nodaway County
  • Clinton – Henry County
  • Butler – Bates County
  • Higginsville – Lafayette County
  • Warrensburg – Johnson County

History: Why Was the 660 Area Code Created?

Missouri’s numbering history explains a lot about why 660 exists today:

  • 1947 – When AT&T created a universal North American telephone numbering plan for Operator Toll Dialing, Missouri was divided into two numbering plan areas: 816 served points generally north and west of Columbia and Jefferson City, while area code 314 served the eastern third of the state, including St.
  • 1951 – A third numbering plan area, 417, was created for southwestern Missouri, which reduced 816 to the northern third of the state, including the Kansas City metropolitan area.
  • 1996–1997 – By late 1996, the proliferation of cell phones and market reforms tied to the Telecommunications Act of 1996 created the need for an additional area code in northern Missouri, prompting Southwestern Bell to declare a “Jeopardy Situation” with the Missouri Public Service Commission in April 1997.
  • October 12, 1997 – Area code 660 officially went live, carving out the rural counties surrounding Kansas City while 816 shrank to focus on the metro area itself.
660 area code

Is a Call From the 660 Area Code Safe? Scam & Spoofing Guide

A geographic area code 660 location​ is not inherently risky, but scammers frequently spoof local-looking numbers (including 660) to increase the odds you’ll answer.

How to Dial a 660 Number

  • Local calls within Missouri: Ten-digit dialing is standard practice across most of the U.S. now dial 660 + 7-digit number.
  • Long-distance/out-of-state calls: Dial 1 + 660 + 7-digit number.
  • International calls to a 660 number: Dial your country’s exit code, then +1 660 XXX-XXXX.

How to Protect Yourself

If you get a call from an unknown number that rings once and disconnects, don’t call it back. Never share personal, banking, or Social Security information during an unsolicited call. Instead, use your carrier’s built-in spam-blocking tools or a reputable call-blocking app to reduce unwanted calls. You can also register your number on the National Do Not Call Registry. While this registration will not stop scammers, it can help reduce calls from legitimate telemarketers.

660 vs. Neighboring Area Codes

Area CodeRegion Covered
660Northern/western Missouri (Sedalia, Chillicothe, Kirksville, Marshall)
816Kansas City metro area
573East-central and southeastern Missouri (Columbia, Jefferson City, Cape Girardeau)
417Southwestern Missouri (Springfield, Joplin)
314/St. Louis city and inner suburbs

Frequently Asked Questions (FAQs)

The 660 area code is located entirely within Missouri, covering the northern and western parts of the state outside the Kansas City metro.

Major cities and towns include Sedalia, Chillicothe, Kirksville, Marshall, Moberly, Maryville, Clinton, and Butler, among many smaller communities.

It was activated on October 12, 1997, after splitting off from area code 816 due to rising demand from cell phones and pagers.

Yes. It is an active, legitimate geographic area code assigned by the North American Numbering Plan Administrator, not a premium or international code.

No. Calling a 660 number costs the same as any other domestic U.S. long-distance or local call, depending on your phone plan. It is not a toll or premium-rate prefix like 900 or 809 numbers.

Conclusion

The 660 area code missouri​ is more than three digits; it’s a direct line to the heart of northern and western Missouri. Since its creation in 1997, it has grown to serve dozens of communities, from college-town Kirksville to fairground-famous Sedalia, giving residents and businesses across this rural stretch of the state a shared telecom identity distinct from the bustling Kansas City metro next door.

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