Where is Area Code 660?
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.