660 Area Code — Missouri
660 is a North American Numbering Plan area code for Missouri, the United States. It covers about 431,889 people in 229 towns and 230 ZIP codes, including Sedalia, Warrensburg and Kirksville.
| Field | Value |
|---|---|
| Area code | 660 |
| Country | United States (+1) |
| State / province | Missouri |
| Type | Standalone (no other NANP code covers the same towns) |
| Time zone | Central |
| Population covered | 431,889 |
| Towns covered | 229 |
| ZIP codes | 230 |
| Approx. centre | 39.650, -93.383 |
Where area code 660 is used
Area code 660 is assigned to Missouri, the United States, inside the North American Numbering Plan. Numbers in the code are written (660) NXX-XXXX at home and +1 660 NXX-XXXX when dialled from outside Canada and the United States. Since the NANP moved to 10-digit dialling you must always include the area code, even for a local call.
Towns and cities in area code 660
The 229 towns below are the largest in the 660 footprint, ranked by population. Every one of them links to its own page with the full list of area codes and ZIP codes for that town.
| Town | County | Population | ZIP codes |
|---|---|---|---|
| Sedalia | Pettis County | 35,091 | 2 |
| Warrensburg | Johnson County | 28,199 | 1 |
| Kirksville | Adair County | 21,218 | 1 |
| Moberly | Randolph County | 16,612 | 1 |
| Marshall | Saline County | 16,026 | 1 |
| Maryville | Nodaway County | 14,280 | 1 |
| Clinton | Henry County | 14,013 | 1 |
| Chillicothe | Livingston County | 12,189 | 1 |
| Warsaw | Benton County | 11,436 | 1 |
| Boonville | Cooper County | 10,640 | 1 |
| Trenton | Grundy County | 7,631 | 1 |
| Macon | Macon County | 7,554 | 1 |
Counties covered
| County | ZIP codes |
|---|---|
| Nodaway County | 14 |
| Macon County | 10 |
| Saline County | 10 |
| Chariton County | 9 |
| Knox County | 8 |
| Linn County | 8 |
| Lafayette County | 8 |
| Harrison County | 8 |
| Daviess County | 8 |
| Carroll County | 8 |
| Pettis County | 8 |
| Sullivan County | 7 |
Nearby area codes
How to dial area code 660
- Within North America: 660 + 7-digit number (660-NXX-XXXX). The leading 1 is optional on a mobile phone and required on most landlines for long-distance.
- From abroad: your country's international prefix, then 1, then 660, then the 7-digit number — for example 00 1 660 NXX-XXXX from most of Europe.
Frequently asked questions
What area code is 660?
660 is a North American Numbering Plan area code assigned to Missouri, the United States. It covers about 431,889 people in 229 towns.
Is 660 a US or Canadian area code?
660 is a United States area code. Canada and the United States share the +1 country code, so both are part of the same numbering plan.
What time zone is area code 660 in?
Area code 660 is in the Central time zone.
Do I have to dial 10 digits?
Yes. Every NANP call now requires the area code plus the seven-digit number, even for a local call.