Area Code 231: West / Northwest Michigan

Area code 231 is in West / Northwest Michigan, Michigan. Numbers that start with 231 are based in Muskegon, Traverse City, Holland.

Area code 231 covers West / Northwest Michigan in Michigan. The primary cities served include Muskegon, Traverse City, Holland.

Area code 231 is primarily associated with Muskegon, along with Traverse City, Holland. It serves the broader West / Northwest Michigan area.

Area code 231 is in Michigan (MI). Michigan has 12 area codes in total.

Area code 231 operates in the Eastern Time Zone. Keep this in mind when scheduling calls with contacts in the West / Northwest Michigan area.

No, area code 231 is the primary area code for West / Northwest Michigan in Michigan. It is not an overlay code.

For calls from outside Michigan, always dial the full 10-digit number. For local calls within Michigan, requirements may vary by carrier, check with your provider.

No, area code 231 is a local geographic area code, not a toll-free number. Standard call charges apply based on your carrier plan. Toll-free area codes include 800, 833, 844, 855, 866, 877, and 888.

Businesses can get a local 231 phone number through Convirza's call tracking platform. A 231 number lets you track inbound calls from West / Northwest Michigan, measure marketing ROI, and analyze conversation data to improve sales performance. Get started with $20 in credits, no credit card required.