Area code 924

Area code 924 at a glance

Area code 924 is a geographic area code in Minnesota, in service since August 30, 2024, according to the North American Numbering Plan Administrator (NANPA). It is an overlay: 924 and 507 cover the same territory, so neighbors on the same street can have different area codes. It is in the Central time zone.

How calls are dialed in 924

According to NANPA's dialing-plan data, local calls within 924 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 provider discretion"

A new code in an overlay

NANPA's utilized-code file dated 10/01/2026 lists no central office codes assigned in 924 yet. NANPA assigned the code on April 13, 2023 and put it in service on August 30, 2024. In an overlay, numbers for the shared territory keep coming from the older code (507) until carriers start drawing codes from 924, so a business phone number requested here today will most likely carry 507.

507 has been in service since January 1, 1954 and has 765 assigned codes held by 94 carriers across 228 rate centers. Its largest code holders are Onvoy, LLC - MN (101), Cellco Partnership d/b/a Verizon Wireless - MN (76), and Qwest Corporation (71). Its most populous matched places are Rochester (124,000), Mankato (46,459), Austin (26,690), and Owatonna (26,626).

Adding an overlay leaves existing numbers unchanged: nobody has to switch numbers, but local calls need all ten digits, and new lines can start with either code.

Places in the 924/507 territory

204 Census places are matched to rate centers with exchanges in 507, the code 924 overlays. The most populous are Rochester (124,000), Mankato (46,459), Austin (26,690), and Owatonna (26,626). Their pages list the prefixes and carriers that serve each town today; numbers from 924 will appear alongside them as carriers draw new codes.

Using area code 924 for business calls

Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.

Porting a number you already use in area code 924 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.