573 area code
Columbia area, Central Time.Area code 573 covers Columbia, Jefferson City, Cape Girardeau and 213 more places in Missouri, on Central Time. 235 covers the same area.
Right now in Columbia
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 573 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 573 has 216. Each one's share is how many 573 numbers start there. Its biggest metro area is St. Louis, MO-IL.
- Columbia8%
- Jefferson City5%
- Cape Girardeau4%
- Farmington2%
- Poplar Bluff2%
Also: Lake Ozark Osage Beach, Rolla, Birch Tree, Hannibal, Sikeston, Fulton, Mexico, Camdenton, Flat River, Dexter, Perryville, Versailles + 199 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 573 number?
Sales calls to homes and cell phones have legal hours, set by the federal rule. Hold every 573 number to them, since you can't tell a work line from a personal cell.
What applies to 573Every 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
573 and 235
573 went into service on January 7, 1996, split off from 314. 573 and 235 cover the same area, so new numbers can get either code and neighbors can have different area codes. 573 holds 96% of the area's exchanges; 235 holds the rest. Local calls take all 10 digits.
- 1996573 starts
- 2024235 overlay
Source: NANPA area code database
Calling a list of 573 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.
573 area code FAQ
What area code is 573?
573 is a Missouri area code for Columbia, Jefferson City, Cape Girardeau, Farmington and 212 more places.
What time zone is the 573 area code in?
Central Time (CST, UTC-6; CDT, UTC-5 in summer).
Is 235 the same as 573?
Same area, different code. 573 and 235 cover the same area (an overlay), so new numbers can get any of them and local calls take all 10 digits.
What are the calling hours for 573 numbers?
Every day, 8 AM to 9 PM, local time, under the federal rule.
When did the 573 area code start?
On January 7, 1996. It was split from 314.
Calling 573 numbers? Reach more of them.
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