What is 660 Area Code?

The 660 area code is a telephone area code in the state of Missouri, United States. It was created in 1997 when it was split from the 816 area code to meet the growing demand for new phone numbers. The 660 area code primarily serves northwestern, northern, and central Missouri. It covers several small cities, towns, and rural communities. 

  • State: Missouri, United States
  • Major Cities: Kirksville, Warrensburg, Sedalia, Marshall, Chillicothe, Clinton
  • Time Zone: Central Time Zone (CT), observes CDT during daylight saving time
  • Established: 1997 (split from 816 area code)
  • Overlay Area Code: None 
  • Region Population: Approx. 670,000 residents across rural, suburban, and small urban areas
  • Primary Uses: Business communication, residential lines, mobile services, local identity

Regions Covered by 660 Area Code

The 660 area code spans multiple counties across Missouri. Below is a detailed list of counties and their respective cities that use this area code:

Nodaway County
  • Maryville
  • Burlington Junction
  • Hopkins
  • Ravenwood
  • Skidmore
  • Barnard
  • Conception Junction
  • Parnell
  • Clearmont
  • Pickering
Pettis County
  • Sedalia
  • La Monte
  • Smithton
  • Green Ridge
  • Houstonia
Saline County
  • Marshall
  • Slater
  • Sweet Springs
  • Malta Bend
  • Blackburn
  • Arrow Rock
Henry County
  • Clinton
  • Windsor
  • Urich
  • Calhoun
  • Montrose
  • Blairstown
  • Coal
Cooper County
  • Boonville
  • Pilot Grove
  • Otterville
  • Wooldridge
  • Bunceton
  • Prairie Home
  • Blackwater
Lafayette County
  • Lexington
  • Higginsville
  • Odessa
  • Wellington
  • Concordia
  • Mayview
  • Napoleon
  • Bates City
Macon County
  • Macon
  • Bevier
  • Callao
  • New Cambria
  • Elmer
  • Ethel
  • La Plata
Harrison County
  • Bethany
  • Ridgeway
  • Cainsville
  • Blythedale
  • Eagleville
  • Mount Moriah
  • Gilman City
  • New Hampton
Bates County
  • Butler
  • Adrian
  • Rich Hill
  • Hume
  • Foster
  • Passaic
Adair County
  • Kirksville
  • Brashear
  • Novinger
Grundy County
  • Trenton
  • Spickard
  • Galt
  • Laredo
Livingston County
  • Chillicothe
  • Chula
  • Ludlow
  • Avalon
Johnson County
  • Warrensburg
  • Knob Noster
  • Chilhowee
Randolph County
  • Moberly
  • Huntsville
  • Higbee

Population & Demographics of 660 Area Code

The 660 area code region covers a largely rural and suburban population. According to U.S. Census Bureau estimates, these areas have a combined population of about 670,000 residents. The demographic makeup includes a mix of small towns, college communities like Kirksville and Warrensburg, and agricultural regions.

For businesses, this means access to a diverse customer base that values local presence, personal connections, and trust in service providers.

660 Area Code Time Zone

The 660 area code falls within the Central Time Zone (CT) in the United States. Like other regions in this zone, it observes Central Standard Time (CST) during the fall and winter months and shifts to Central Daylight Time (CDT) during daylight saving.