573 area code: location, overlays and numbers
Area code 573 serves St. Louis, Missouri, as a US telephone area code. It has operated since 1996 and shares an overlay with 235.
- Location
- St. Louis in Missouri
- Service start date
- 1996
- Timezone
- Central time
- Overlay
- 235
- Calls within the area
- 10-digit dialing
- Rate centre list
- 216
- Expected exhaust
- 2063
- International calling code
- +1 (United States)
Sources: NANPA public reports, the area code report and the rate-centre report, file dated 11/01/2026. Projected exhaust year: NANPA projections 2026-1 (April 2026). Not an official NANPA site.
Get a number in the 573 area code
You can get a 573 number in two ways. The provider assigns a new number as part of its plan, chosen at sign-up among the numbers it holds in the code. Sellers list numbers they already hold, often ones with a pattern, at a one-time price. You then move the number over to a provider.
Providers ranked by first-year cost
| Provider | Cheapest plan | First year | Link |
|---|---|---|---|
 Free app | Basic (Just for me), free | $0 | Open Google Voice |
 Free app | Free plan, free | $0 | Open TextNow |
 Developer API | Pay-as-you-go local number, $1.15 a month | $13.80 | Open Twilio |
 Second-number app | Standard, $3.99 a month billed yearly | $47.99 | Open Burner |
 Toll-free specialist | Solo, $6.99 a month billed yearly | $84 | Open UniTel Voice |
 Second-number app | Deluxe (local number), $6.99 a month billed yearly | $102.88 | Open GoDaddy Conversations (formerly Smartline) |
Sellers that list local numbers
| Seller | What it sells | Listed price | Monthly fee | Link |
|---|---|---|---|---|
 Marketplace | Local numbers | From $9 one-time | None stated | Search at Exclusive Digits |
 Marketplace | Local and toll-free | From $9.95 one-time | $2.99 a month | Search at NumberBarn |
 Number broker | Local and toll-free | From $99 one-time | None stated | Search at RingBoost |
 Number broker | Local and toll-free | From $100 one-time | None stated | Search at PhoneNumberExpert |
| 212areacode.comNumber broker | Local numbers | From $150 one-time | None stated | Search at 212areacode.com |
Some sellers and providers may pay us a referral fee. The order stays based on first-year cost no matter what. How we earn
Places in the 573 area code
For 573, NANPA lists 216 rate centres. These are local calling areas where numbers are assigned:
East Prairie, Durham, Doniphan, Dixon, Dexter, Delta, Deering, Cuba, Crocker, Columbia, Clubb, Climax Springs, Clearwater, Clarksville, Clarksburg, Clark, Cherryville, Charleston, Chamois, Chaffee, Centralia, Centerville, Centertown, Center, Caruthersville, Cardwell, Cape Girardeau, Canton, Campbell, Camdenton, California, Caledonia, Bunker, Brazito, Bowling Green, Bourbon, Boss, Bonne Terre, Blytheville, Bloomsdale, Bloomfield, Bland, Bismarck, Birch Tree, Bigspring, Bernie, Berger, Benton, Bellflower, Belleview, Belle, Bell City, Belgrade, Beaufort, Auxvasse, Ashland, Argyle, Annapolis, Altenburg Frohna, Advance, and 156 more.
Other related area codes
The area shares one number pool with 235. Any of these codes may provide a new number in this area, so request the one you want.
Missouri uses several other area codes: 314, 816 and 417, plus 660, 636, 557 and 975.
573 area code questions
What area does code 573 cover?
Code 573 serves St. Louis, Missouri, and the surrounding St. Louis, MO-IL area.
Which country code is used for 573 numbers?
+1. 573 belongs to the North American Numbering Plan. From overseas you dial +1 573 plus the 7-digit number.
What time is it in the 573 area code?
Code 573 uses Central time.
Who places calls from a 573 number?
People with a number in this code include homes, mobiles and local businesses, plus callers who fake a local number. When a 573 number appears on your screen, it shows where the number was assigned. It does not identify the caller.