Rochester, MN Area Codes

Area codes serving Rochester

Rochester sits in Minnesota, part of the Midwest region and the Central Time zone. Its numbers are spread across an overlay of 2 codes that all cover the same ground: 507, 924.

The original code is 507 (in service since 1954). As the area ran low on numbers, regulators added overlay codes on top instead of splitting the city, so longtime residents kept their numbers while new lines received a newer code.

Code	Area served	In service
507	Southern Minnesota including Rochester, Mankato, Winona and Austin	January 1, 1954
924	Southern Minnesota including Rochester, Mankato, Winona and Austin	August 30, 2024

Nearby cities sharing these area codes

• Mankato
• Winona
• Austin
• Owatonna
• Faribault
• Northfield
• Albert Lea
• New Ulm
• Marshall
• Worthington
• Fairmont
• St. Peter

How to pick an area code for a new number

When you activate a new line in Rochester, the carrier assigns whichever code has numbers available — you usually can't choose. If a specific code matters to you (for example the prestige of 507), ask the carrier whether any blocks remain, or request a number transfer. All codes here dial identically and cost the same.

Dialing in Rochester

Because Rochester is an overlay area, 10-digit dialing is mandatory: always dial the area code plus the seven-digit number, even for a neighbor. See 10-digit dialing and overlay area codes for the background. For every code in Minnesota, visit the Minnesota area codes page.