Area code 573

About area code 573

NANPA lists 573 as an in-service geographic area code for Missouri, first put into service on January 7, 1996. It is an overlay: 573 and 235 cover the same territory, so neighbors on the same street can have different area codes. It is in the Central time zone. The places with the most assigned exchanges include Columbia, Jefferson City, Cape Girardeau, Farmington, and Poplar Bluff. By population, its largest named places are Columbia, Jefferson City, Cape Girardeau, Rolla, and Farmington.

Where 573 numbers are local

573 holds 19% of the 4,168 central office codes assigned in Missouri, the most of any code in the state. 165 Census places could be matched to rate centers with 573 exchanges; the most populous are Columbia (131,000), Jefferson City (42,564), Cape Girardeau (40,818), and Rolla (20,660). Each place page lists the exact prefixes and carriers for that town.

Ten-digit and seven-digit dialing in 573

According to NANPA's dialing-plan data, local calls within 573 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit dialing permissible at service providers discretion"

Who holds 573 exchanges

49 carriers hold the 786 central office codes assigned in 573. Southwestern Bell has the most, with 128 (16%). 689 of the codes (88%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Where 573 numbers are rated

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 573 has codes in 216 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

How full is area code 573?

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 786 are assigned in 573, 98% of 800. 85 were assigned in 2020 or later.

Getting a 573 number for your business

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in area code 573 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.