Where is Area Code 660?

Max of Missouri with area code 660 highlighted

Area code 660 is found in the US state of Missouri. Primarily servicing the city of Sedalia (population: 34362), area code 660 covers 39 counties of Missouri.

Located in the Central time zone, area code 660 is on the same time as Chicago, IL.

Area code 660 was brought into effect on October 12, 1997. 660 was split from the parent 816 area code.

Counties in Area Code 660

  • Adair,
  • Atchison,
  • Bates,
  • Benton,
  • Caldwell,
  • Carroll,
  • Chariton,
  • Clark,
  • Cooper,
  • Daviess,
  • Gentry,
  • Grundy,
  • Harrison,
  • Henry,
  • Holt,
  • Howard,
  • Johnson,
  • Knox,
  • Lafayette,
  • Lewis,
  • Linn,
  • Livingston,
  • Macon,
  • Mercer,
  • Moniteau,
  • Monroe,
  • Nodaway,
  • Pettis,
  • Putnam,
  • Randolph,
  • Ray,
  • Saint Clair,
  • Saline,
  • Schuyler,
  • Scotland,
  • Shelby,
  • Sullivan,
  • Worth.

Most Populous Cities in Area Code 660

City County City Population
Sedalia Pettis 34,362
Warrensburg Johnson 28,553
Kirksville Adair 21,510
Moberly Randolph 17,622
Maryville Nodaway 16,056
Marshall Saline 15,916
Clinton Henry 13,187
Chillicothe Livingston 12,308
Boonville Cooper 11,649
Warsaw Benton 10,466
Trenton Grundy 8,203
Macon Macon 7,929
Butler Bates 6,967
Knob Noster Johnson 6,183
Higginsville Lafayette 6,094
Brookfield Linn 6,010
Lexington Lafayette 5,736
Carrollton Carroll 5,098
Windsor Henry 4,744
Fayette Howard 4,630
Bethany Harrison 4,467
Tipton Moniteau 3,929
Kahoka Clark 3,817
Unionville Putnam 3,768
Milan Sullivan 3,684

Note: The above list is based off of the top 25 most populous cities in the area code as per 2012 United States Census Bureau estimates.

View all United States Area Codes.