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Area code 507

Where 507 is, how it is dialed, which carriers hold its numbers and how many of its codes are in use, from NANPA's 10/01/2026 files.

State
MN
In service
1954
Assigned codes
765of 800 possible
Carriers
94

About area code 507

NANPA lists 507 as an in-service geographic area code for Minnesota, first put into service on January 1, 1954. It is an overlay: 507 and 924 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 Rochester, Mankato, Winona, Faribault, and Owatonna. By population, its largest named places are Rochester, Mankato, Austin, Owatonna, and Winona.

Area code 507: NANPA facts
ItemValue
StateMinnesota
In service sinceJanuary 1, 1954
OverlayYes, with 924
Time zoneCentral
Local calls within the codeten digits (area code plus number)
Assigned central office codes765
Rate centers with codes228
Carriers holding codes94
Pooled codes552
Codes assigned since 202087
Relief planning in progressNo

Source: NANPA NPA report and utilized central office code file, both dated 10/01/2026.

Where 507 numbers are local

507 holds 20% of the 3,755 central office codes assigned in Minnesota, the most of any code in the state. 204 Census places could be matched to rate centers with 507 exchanges; the most populous are Rochester (124,000), Mankato (46,459), Austin (26,690), and Owatonna (26,626). For a storefront or service area inside 507, the place pages show which prefixes are rated local there.

Most populous places with 507 exchanges
PlacePopulation (2024)Area codesExchangesCarriers
Rochester, MN123,6245078435
Mankato, MN46,459507467
Austin, MN26,690507178
Owatonna, MN26,626507209
Winona, MN26,173507228
Faribault, MN24,983507216
Northfield, MN21,316507145
Albert Lea, MN18,159507148
Marshall, MN13,996507158
New Ulm, MN13,970507114
Worthington, MN13,754507116
St. Peter, MN12,45650775
Fairmont, MN10,176507105
Waseca, MN9,067507106
Kasson, MN7,20750722

Population: Census Vintage 2024 estimates for the matched place. Exchanges and carriers: NANPA utilized code file.

Dialing 507 numbers

According to NANPA's dialing-plan data, local calls within 507 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Ten-digit local dialing means the area code is part of how customers save and recognize your number, so print it in full everywhere. NANPA's dialing-plan note for this code reads: "1+10 digit dialing permissible at service providers discretion"

Who holds 507 exchanges

94 carriers hold the 765 central office codes assigned in 507. Onvoy, LLC - MN has the most, with 101 (13%). 552 of the codes (72%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. Numbers can move between carriers through porting, so a code's holder tells you where the block started, not where every number lives now.

Largest code holders in area code 507
Carrier (NANPA operating company)ExchangesShare
Onvoy, LLC - MN10113%
Cellco Partnership d/b/a Verizon Wireless - MN769.9%
Qwest Corporation719.3%
New Cingular Wireless PCS, LLC - Il557.2%
MCC Telephony of Minnesota, LLC - MN526.8%
Aerial Communications, INC.445.8%
Frontier Communications of Minnesota, INC.385.0%
Citizens Telecom CO Mn-frontier Citizens Com-mn354.6%
Bandwidth.com CLEC, LLC - MN202.6%
Consolidated Communications of Minnesota CO - MN202.6%
Centurytel of Minnesota, INC. d/b/a Centurylink192.5%
Level 3 Communications, LLC - MN172.2%

Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.

Rate centers and towns in 507

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 507 has codes in 228 rate centers. The table lists the rate centers with the most codes, with the matching Census place where the abbreviation could be matched.

Rate centers in area code 507 by assigned codes
Rate center (NANPA)PlaceCodes
ROCHESTERRochester, MN84
MANKATOMankato, MN46
WINONAWinona, MN22
FARIBAULTFaribault, MN21
OWATONNAOwatonna, MN20
AUSTINAustin, MN17
MARSHALLMarshall, MN15
NORTHFIELDNorthfield, MN14
ALBERT LEAAlbert Lea, MN14
NEW ULMNew Ulm, MN11
WORTHINGTNWorthington, MN11
WASECAWaseca, MN10
FAIRMONTFairmont, MN10
LUVERNELuverne, MN9
WINDOMWindom, MN8
LE SUEURLe Sueur, MN8
GAYLORDGaylord, MN7
ST PETERSt. Peter, MN7
PIPESTONEPipestone, MN6
CALEDONIACaledonia, MN6
REDWOODFLSRedwood Falls, MN6
JACKSONJackson, MN6
CANNON FLSCannon Falls, MN5
ST JAMESSt. James, MN5
ELLENDALEEllendale, MN5

Top 25 of 228 rate centers.

Number supply in 507

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). 765 are assigned in 507, 96% of 800. 87 were assigned in 2020 or later.

Area code 507: central office codes by decade assigned
Decade assignedExchangesShare
2000s16649%
2010s8625%
2020s8726%

Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.

Using area code 507 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.

If you already have a number in area code 507, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.

Frequently asked questions

Where is area code 507?

507 is a geographic area code in Minnesota. Places with the most assigned exchanges include Rochester, Mankato, Winona, and Faribault.

What time zone is area code 507 in?

NANPA lists 507 in the Central time zone.

When did area code 507 go into service?

NANPA records an in-service date of January 1, 1954.

Is 507 an overlay area code?

Yes. It shares its territory with 924.

Can my business get a 507 phone number?

Callata includes up to 3 local numbers on its $99/month plan (5 users included). Which 507 numbers are open depends on carrier inventory when you choose, and you can port an existing number for free.