231 Rate Centers & Exchanges

18 rate centers · Michigan · Eastern Time

A rate center is the geographic unit used by phone carriers to determine local calling areas and billing. Each rate center has a specific name and set of NXX exchanges (the 3-digit prefix after the area code) assigned to it. The map below shows the 18 rate centers within area code 231.

Rate Center Locations

18 centers in area code 231

All Rate Centers in Area Code 231

Rate Center	Latitude	Longitude
Alanson	45.4408	-84.7891
Alden	44.8832	-85.2763
Baldwin	43.9017	-85.8507
Big Rapids	43.6990	-85.4855
Cadillac	44.2487	-85.4016
Charlevoix	45.3177	-85.2586
Cheboygan	45.6492	-84.4637
Elmira	45.0660	-84.8512
Lake Ann	44.7244	-85.8408
Ludington	43.9496	-86.4535
Luther	44.0403	-85.6837
Mancelona	44.8998	-85.0694
Muskegon	43.2357	-86.2416
Newaygo	43.4153	-85.8011
Reed City	43.8731	-85.5088
Torch River Bridge	44.8501	-85.3254
Traverse City	44.7677	-85.6066
Whitehall	43.4061	-86.3490

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