The 573 area code covers Columbia, Jefferson City and 189 more places in Missouri.
Area code 573 is in Missouri, on Central Time. In the 573 area, phone numbers are given out most in Boone County, then Cape Girardeau and Cole counties. It has been in service since January 7, 1996. 235 covers the same area, so two neighbours can have different area codes.
- Where
- 8 counties in Missouri, mostly Boone County, Cape Girardeau County and Cole County
- Time zone
- Central Time
- In service since
- January 7, 1996
- Shares its area with
- 235 (since 2024)
- Prefixes in use
- 786
- How to dial
- Local calls need all 10 digits: 573-555-0142.
Find out who called you from a 573 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (573) number is on today, use our free carrier lookup.
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Columbia holds 8% of the phone prefixes in area code 573.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 786 prefixes in use shows where 573 numbers are actually given out.
- Columbia59 prefixes, 8%
- Jefferson City39 prefixes, 5%
- Cape Girardeau34 prefixes, 4%
- Farmington16 prefixes, 2%
- Poplar Bluff16 prefixes, 2%
- Rolla15 prefixes, 2%
- Hannibal13 prefixes, 2%
- Sikeston13 prefixes, 2%
Also served: Birch Tree, Fulton, Mexico and Camdenton and 179 smaller places.
Southwestern Bell (AT&T) holds the most phone number prefixes in area code 573: 128 of 786.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 786 prefixes in use in 573 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| Southwestern Bell (AT&T)AT&T's landline company | 128 | 16% |
| AT&T MobilityMobile network | 113 | 14% |
| BrightspeedLandline company | 80 | 10% |
| Level 3 (Lumen)Lumen's business and wholesale network | 64 | 8% |
| T-MobileMobile network | 44 | 6% |
| CenturyLinkLandline company | 40 | 5% |
| 40 other carriers | 317 | 40% |
88% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
573 has been overlaid once since 1996.
1996
573 starts on January 7, 1996, split off from 314.
2024
On March 24, 2024, 235 is added on top of 573, so new numbers here can get either code.
A 573 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 573 are 636, 314 and 618.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
These are the questions people ask most about area code 573.
Where is area code 573?
573 covers Columbia, Jefferson City, Cape Girardeau and Farmington and 187 more places in Missouri. In the 573 area, phone numbers are given out most in Boone County, then Cape Girardeau and Cole counties.
What state is area code 573 in?
Missouri. 573 is a Missouri area code on Central Time.
What cities use area code 573?
The places holding the most 573 prefixes are Columbia, Jefferson City, Cape Girardeau, Farmington, Poplar Bluff, Rolla, Hannibal and Sikeston, out of 191 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 573?
No single phone company owns 573. NANPA's records show Southwestern Bell (AT&T) holds the most 573 prefixes, 128 of 786, followed by AT&T Mobility and Brightspeed. Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 573 in?
573 is on Central Time.
When did area code 573 start?
573 went into service on January 7, 1996, when it was split off from 314.
Is 573 the same area as 235?
Yes. 235 (since 2024) covers the same ground as 573. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial a 573 number?
Local calls need all 10 digits: 573-555-0142.
Is 573 a toll-free number?
No. 573 is a regular area code for Columbia and Jefferson City in Missouri, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 573?
The closest are 636 (Saint Charles, Missouri), 314/557 (Saint Louis, Missouri), 618/730 (Collinsville, Illinois) and 417 (Springfield, Missouri), measured between the centres of each area.
Who called me from a 573 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 573 a scam?
573 is a real Missouri area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.