660 area code
Sedalia area, Central Time.Area code 660 covers Sedalia, Kirksville, Warrensburg and 221 more places in Missouri, on Central Time.
Right now in Sedalia
Central Time (CST, UTC-6; CDT, UTC-5 in summer)
Calling hours: Every day, 8 AM to 9 PM (the federal rule)
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Where 660 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 660 has 224. Each one's share is how many 660 numbers start there. Its biggest metro area is Kansas City, MO-KS.
- Sedalia4%
- Kirksville3%
- Warrensburg3%
- Clinton2%
Also: Maryville, Moberly, Chillicothe, Marshall, Boonville, Butler, Trenton, Warsaw, Bethany, Brookfield, Higginsville, Macon + 208 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 660 number?
Sales calls to homes and cell phones have legal hours, set by the federal rule. Hold every 660 number to them, since you can't tell a work line from a personal cell.
What applies to 660Every day, 8 AM to 9 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
The 660 area code
660 went into service on October 12, 1997, split off from 816. Local calls take all 10 digits.
- 1997660 starts
Source: NANPA area code database
Calling a list of 660 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
660 area code FAQ
What area code is 660?
660 is a Missouri area code for Sedalia, Kirksville, Warrensburg, Clinton and 220 more places.
What time zone is the 660 area code in?
Central Time (CST, UTC-6; CDT, UTC-5 in summer).
What are the calling hours for 660 numbers?
Every day, 8 AM to 9 PM, local time, under the federal rule.
When did the 660 area code start?
On October 12, 1997. It was split from 816.
Calling 660 numbers? Reach more of them.
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