The most populous cities in area code 660 are: Chillicothe, Sedalia, Kirksville, Warrensburg, and Moberly.
Other cities in the 660 area code include: Clinton, Marshall, Maryville, Boonville, Huntsville, Trenton, Butler, Knob Noster, Brookfield, Macon, Bethany, Amoret, Marceline, Warsaw, Gallatin, Lexington, Carrollton, Memphis, Blythedale, Hurdland, Powersville, Mound City, Norborne, Otterville, Rock Port, Princeton, Concordia, Houstonia, Higginsville, Tipton, Fayette, Milan, Salisbury, Bevier, Hale, Meadville, Gilman City, Bunceton, Breckenridge, Eagleville, Clearmont, New Cambria, Lucerne, Newark, Miami, Watson, Slater, Stanberry, King City, Waverly, Pilot Grove, Chilhowee, Albany, Appleton City, Nelson, Latham, Blackwater, Sweet Springs, La Belle, Revere, Cole Camp, Glasgow, Grant City, Calhoun, Montrose, Blairstown, Blackburn, Tarkio, Urich, Green Ridge, Centerview, Edina, Braymer, Leeton, Atlanta, Deepwater, La Monte, La Plata, New Franklin, Paris, Lincoln, Brunswick, Hardin, Malta Bend, Bethel, Kahoka, Armstrong, Unionville, Oregon, Green City, Queen City, Polo, Jamesport, Burlington Junction, Bucklin, Ravenwood, Ridgeway, Alma, Keytesville, Mercer, Novinger, Callao, Maitland, Spickard, Mayview, Linneus, New Hampton, Barnard, Graham, Newtown, Knox City, Amsterdam, Skidmore, Browning, Chula, Laredo, Sheridan, Tina, Elmo, Westboro, Worthington, Bosworth, Brashear, Parnell, Gilliam, Wyaconda, Purdin, Galt, Cowgill, Glenwood, Conception Junction, Dawn, Bogard, Mooresville, Rayville, Ludlow, Winigan, Livonia, Luray, Gentry, Darlington, Ethel, Leonard, Denver, Wooldridge, Arbela, Cainsville, Martinsville, New Boston, Clarence, Madison, Higbee, Rockville, Ionia, Windsor, Lancaster, Fairfax, Wayland, Craig, Syracuse, Smithton, Hopkins, Jamestown, Downing, Elmer, Prairie Home, Winston, Pickering, Coffey, Dalton, Pattonsburg, Laclede, Mendon, Gorin, Rothville, Creighton, Sumner, Schell City, Holliday, Fortuna, Florence, and Rutledge.
Chillicothe is a city in and the county seat of Livingston County, Missouri, United States. The population was 9,515 at the 2010 census. The name "Chillicothe" is Shawnee for "big town", and was named after their Chillicothe, located since 1774 about a mile from the present-day city.
Sedalia, Missouri is a city located about 30 miles (48 km) south of the Missouri River in Pettis County. As of the 2010 census, the city had a total population of 21,387. As the county seat of Pettis County, it is the principal city of the Sedalia Micropolitan Statistical Area, which consists of Pettis County. Sedalia is also the location of the Missouri State Fair and the Scott Joplin Ragtime Festival. U.S. Routes 50 and 65 intersect in the city.
Kirksville is a city in and the county seat of Adair County, Missouri, United States. Located in the Benton Township, its population was 17,505 at the 2010 census. Kirksville is home to two colleges: Truman State University and A.T. Still University.
The 660 area code lies within the Central Daylight Time Zone (or CDT). The current time in Central Daylight Time is 4:01 AM on Dec 20, 2022.