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Area Code 231

Area code 231 is in Michigan, USA , spanning 22 counties and serving 141 cities, including Muskegon, Traverse City or Cadillac; it currently uses 569 prefixes, assigned from 231-201-XXXX through 231-999-XXXX.

In service date for area code 231: June 05, 1999.

The current local time is .

231 area code location on a map — © OpenStreetMap contributors
For exact NPA boundaries see official 231 area code map

Phone number lookup

More Michigan area codes:

Locate any 231-NXX prefix:

NPANXX	Area Served¹	Date²
231-201	Chippewa Lake	3/5/2004
231-202	Mecosta	3/5/2004
231-203	Alanson	3/19/2004
231-204	Fife Lake	N/A
231-205	Brutus	3/24/2004
231-206	Muskegon	N/A
231-207	Honor	3/24/2004
231-208	Boyne Falls	3/24/2004
231-209	Suttons Bay	3/25/2004
231-210	St James	07/11/2023
231-212	Interlochen	7/25/2016
231-213	Traverse City	3/26/2015
231-214	Le Roy	N/A
231-215	Muskegon	N/A
231-216	Frankfort	12/1/2015
231-217	Bear Lake	3/24/2004
231-218	Traverse City	N/A
231-219	Merritt	3/24/2004
231-220	Muskegon	3/25/2003
231-221	Harbor Springs	6/1/2015
231-222	East Jordan	4/4/2002
231-223	Old Mission	N/A
231-224	Fremont	N/A
231-225	Fremont	4/4/2002
231-226	Glen Lake	3/24/2004
231-227	Honor	9/26/2012
231-228	Glen Lake	N/A
231-229	Moorestown	N/A
231-230	Elmira	3/24/2004
231-232	Moorestown	3/24/2004
231-233	Ludington	8/30/2004
231-234	Buckley	12/7/2015
231-235	Levering	3/24/2004
231-236	Lake City	3/24/2004
231-237	Charlevoix	N/A
231-238	Indian River	N/A
231-239	Ludington	4/28/2004
231-240	Lake Ann	3/24/2004
231-241	Pentwater	10/10/2006
231-242	Harbor Springs	N/A
231-243	Alanson	3/24/2004
231-244	Boyne City	8/26/2015
231-245	Newaygo	7/17/2009
231-246	Muskegon	12/22/2015
231-247	Williamsburg	9/28/2018
231-249	Cheboygan	N/A
231-250	Big Rapids	N/A
231-251	Lake Leelanau	12/2/2015
231-252	Traverse City	4/18/2016
231-253	Cadillac	11/8/2018
231-254	Petoskey	10/24/2019
231-255	Onekama	N/A
231-256	Lake Leelanau	N/A
231-257	Lake City	2/27/2019
231-258	Kalkaska	N/A
231-259	Shelby	2/7/2007
231-260	Muskegon	3/3/2017
231-261	Ludington	12/31/2018
231-262	Elmira	1/21/2005
231-263	Kingsley	N/A
231-264	Elk Rapids	N/A
231-265	Coral	5/19/2014
231-266	Irons	N/A
231-267	Williamsburg	N/A
231-268	Cheboygan	7/12/2004
231-269	Buckley	N/A
231-270	Boyne City	5/21/2021
231-271	Suttons Bay	N/A
231-272	Kingsley	8/8/2019
231-273	Eastport	10/26/2020
231-274	Traverse City	N/A
231-275	Lake Ann	N/A
231-276	Interlochen	N/A
231-277	Fountain	3/22/2016
231-278	Hesperia	10/26/2020
231-279	Big Rapids	12/20/2019
231-280	Mancelona	2/29/2016
231-281	Cadillac	11/3/2020
231-282	Grant	N/A
231-283	Muskegon	11/9/2020
231-284	Manistee	3/1/2021
231-285	Cadillac	1/9/2020
231-286	Muskegon	N/A
231-287	Big Rapids	N/A
231-288	Muskegon	9/13/2005
231-289	Charlevoix	7/19/2018
231-290	Indian River	N/A
231-291	Muskegon	5/11/2012
231-292	Whitehall	7/30/2010
231-293	Frankfort	5/14/2021
231-294	Fife Lake	6/15/2021
231-295	Lake City	9/26/2012
231-296	Fremont	5/13/2021
231-297	Kingsley	6/25/2021
231-298	Irons	5/13/2021
231-299	Manistee	12/28/2011

NPANXX	Area Served¹	Date²
231-300	Alden	9/7/2017
231-301	Hart	N/A
231-302	Petoskey	N/A
231-303	Newaygo	5/16/2011
231-304	Brutus	10/26/2020
231-305	Big Rapids	N/A
231-306	Cadillac	N/A
231-307	Morley	N/A
231-308	Charlevoix	N/A
231-309	Manistee	N/A
231-310	Falmouth	9/25/2018
231-312	Frankfort	N/A
231-313	Traverse City	N/A
231-314	Kalkaska	N/A
231-315	Muskegon	N/A
231-316	Ludington	N/A
231-317	Boyne City	N/A
231-318	Traverse City	N/A
231-319	Mackinaw City	N/A
231-320	Torch River Bridge	9/3/2021
231-321	Elmira	5/19/2021
231-322	Torch River Bridge	N/A
231-323	East Jordan	N/A
231-324	Harbor Springs	5/25/2021
231-325	Honor	N/A
231-326	Glen Lake	N/A
231-327	Muskegon	N/A
231-328	Merritt	N/A
231-329	Muskegon	N/A
231-330	Petoskey	12/10/2002
231-331	Alden	N/A
231-332	Muskegon	N/A
231-333	Cheboygan	4/4/2002
231-334	Glen Lake	N/A
231-335	Fremont	N/A
231-336	Ludington	N/A
231-337	Mcbain	N/A
231-338	Baldwin	N/A
231-339	Muskegon	N/A
231-340	Elmira	7/9/2003
231-342	Traverse City	N/A
231-343	Muskegon	N/A
231-344	Petoskey	N/A
231-345	Reed City	N/A
231-346	Traverse City	N/A
231-347	Petoskey	N/A
231-348	Petoskey	N/A
231-349	Big Rapids	N/A
231-350	Bellaire	7/9/2003
231-351	Scottville	N/A
231-352	Frankfort	N/A
231-353	Mcbain	N/A
231-354	Coral	N/A
231-355	Fremont	N/A
231-356	Mancelona	N/A
231-357	Traverse City	N/A
231-358	Central Lake	N/A
231-359	Mecosta	9/26/2012
231-360	Traverse City	12/30/2002
231-361	Morley	N/A
231-362	Kaleva	N/A
231-363	Cheboygan	N/A
231-364	Northport	6/15/2021
231-365	Wolverine	N/A
231-366	Fruitport	2/27/2003
231-367	Wolverine	6/25/2021
231-368	Baldwin	N/A
231-369	Soboardman	N/A
231-370	Muskegon	9/3/2021
231-371	Tustin	9/3/2021
231-372	Evart	N/A
231-373	Petoskey	4/27/2004
231-374	Shelby	6/15/2021
231-375	Muskegon	N/A
231-376	Twin Lake	7/2/2021
231-377	Clam River	N/A
231-378	Copemish Thompsonville	N/A
231-379	Onekama	8/26/2021
231-380	Newaygo	1/10/2022
231-381	Whitecloud	5/13/2021
231-383	Beulah	4/29/2003
231-384	Kalkaska	5/1/2003
231-385	Coral	7/20/2021
231-386	Northport	N/A
231-387	Petoskey	10/6/2021
231-388	Le Roy	5/1/2003
231-389	Harrietta	N/A
231-390	Big Rapids	10/26/2021
231-391	Glen Lake	7/2/2021
231-392	Traverse City	1/9/2001
231-393	Le Roy	7/2/2021
231-394	Moorestown	7/29/2003
231-395	Grant	N/A
231-396	Cadillac	10/29/2021
231-397	Manistee	11/3/2021
231-398	Manistee	N/A
231-399	Frankfort	1/19/2005

NPANXX	Area Served¹	Date²
231-400	Alanson	10/10/2019
231-401	Traverse City	12/21/2021
231-402	Muskegon	1/21/2022
231-403	Williamsburg	8/16/2011
231-404	Stanwood	10/5/2004
231-405	Alden	2/4/2022
231-406	Falmouth	2/4/2022
231-407	Mecosta	2/4/2022
231-408	Big Rapids	N/A
231-409	Traverse City	N/A
231-410	Manistee	8/12/2022
231-412	Harbor Springs	10/11/2010
231-413	Kalkaska	2/14/2022
231-414	Newaygo	N/A
231-415	Dublin	12/5/2022
231-416	Big Rapids	N/A
231-417	Petoskey	01/06/2023
231-418	Marion	07/11/2023
231-419	Bellaire	07/11/2023
231-420	Cheboygan	N/A
231-421	Traverse City	2/20/2002
231-422	Pellston	8/25/2015
231-423	Evart	N/A
231-424	Carr	1/27/2005
231-425	Ludington	N/A
231-426	Ravenna	07/11/2023
231-427	Mackinaw City	8/17/2011
231-428	Muskegon	07/14/2023
231-429	Cadillac	12/5/2002
231-430	Boyne City	07/14/2023
231-431	Clam River	5/19/2021
231-432	Northport	8/30/2002
231-433	Moorestown	4/29/2011
231-434	Manton	9/26/2014
231-435	Eastport	07/14/2023
231-436	Mackinaw City	N/A
231-437	Charlevoix	N/A
231-438	Harbor Springs	07/14/2023
231-439	Petoskey	N/A
231-440	Baldwin	8/27/2002
231-441	Fife Lake	8/27/2002
231-442	Harrietta	12/1/2015
231-443	Honor	1/8/2021
231-444	Cadillac	8/24/2015
231-445	Cheboygan	8/24/2004
231-446	Northport	07/14/2023
231-447	Holton	12/2/2015
231-448	St James	N/A
231-449	Baldwin	5/13/2021
231-450	Hesperia	1/19/2005
231-451	Williamsburg	07/14/2023
231-452	Newaygo	2/8/2001
231-453	Holton	03/01/2024
231-454	Traverse City	9/23/2021
231-455	Pentwater	1/8/2021
231-456	Glen Lake	09/05/2024
231-457	Muskegon	N/A
231-459	Boyne City	1/9/2004
231-460	Big Rapids	N/A
231-462	Fountain	N/A
231-463	Traverse City	N/A
231-464	Freesoil	N/A
231-465	Reed City	N/A
231-466	Evart	7/2/2021
231-468	Cadillac	2/5/2001
231-475	Manton	7/2/2021
231-477	Brethren	N/A
231-480	Ludington	5/23/2002
231-484	East Jordan	8/7/2013
231-486	Traverse City	N/A
231-487	Petoskey	N/A
231-488	Manistee	8/27/2002
231-489	Petoskey	4/21/2015
231-492	Traverse City	N/A
231-493	Traverse City	5/17/2017
231-494	Big Rapids	N/A
231-495	Bellaire	7/29/2016
231-497	Boyne City	N/A
231-498	Elk Rapids	10/20/2004
231-499	Traverse City	N/A

NPANXX	Area Served¹	Date²
231-500	Whitehall	10/10/2019
231-508	Onekama	6/3/2008
231-510	Manistee	N/A
231-512	Traverse City	N/A
231-514	Cadillac	N/A
231-515	Evart	1/19/2005
231-516	Petoskey	N/A
231-518	Kalkaska	6/18/2001
231-519	Newaygo	7/19/2002
231-520	Charlevoix	8/27/2002
231-522	Luther	N/A
231-525	Wolverine	N/A
231-526	Harbor Springs	N/A
231-527	Big Rapids	N/A
231-529	Brutus	N/A
231-531	Muskegon	4/9/2019
231-533	Bellaire	N/A
231-534	Traverse City	10/30/2002
231-535	Walloon Lk	N/A
231-536	East Jordan	N/A
231-537	Levering	N/A
231-538	Fremont	8/27/2002
231-539	Pellston	N/A
231-544	Central Lake	N/A
231-545	Boyne Falls	9/23/2016
231-546	Elmira	N/A
231-547	Charlevoix	N/A
231-548	Alanson	N/A
231-549	Boyne Falls	N/A
231-550	Petoskey	9/22/2021
231-557	Muskegon	N/A
231-559	Mcbain	8/1/2012
231-563	Muskegon	1/9/2001
231-564	Kalkaska	N/A
231-566	Harrietta	2/22/2022
231-567	Muskegon	12/2/2020
231-568	Traverse City	N/A
231-569	Petoskey	N/A
231-570	Fife Lake	3/29/2002
231-571	Muskegon	N/A
231-577	Cadillac	5/14/2002
231-578	Muskegon	N/A
231-580	Big Rapids	2/5/2001
231-581	Alba	4/20/2017
231-582	Boyne City	N/A
231-583	Ludington	8/27/2002
231-584	Alba	N/A
231-585	Lake North	N/A
231-587	Mancelona	N/A
231-588	Ellsworth	N/A
231-590	Traverse City	N/A
231-591	Big Rapids	N/A
231-592	Big Rapids	N/A
231-593	Cadillac	N/A
231-594	Hart	3/7/2001
231-596	Harbor Springs	N/A
231-597	Cheboygan	N/A
231-598	Big Rapids	N/A
231-599	Eastport	N/A

NPANXX	Area Served¹	Date²
231-600	Traverse City	12/19/2019
231-604	Kalkaska	N/A
231-605	Newaygo	N/A
231-608	Frankfort	N/A
231-613	Scottville	N/A
231-614	Pentwater	10/12/2001
231-615	Cheboygan	N/A
231-620	Traverse City	N/A
231-622	Petoskey	8/19/2002
231-624	Kalkaska	N/A
231-625	Cheboygan	N/A
231-626	Levering	9/26/2012
231-627	Cheboygan	N/A
231-629	Big Rapids	N/A
231-631	Traverse City	8/31/2001
231-632	Traverse City	N/A
231-633	Traverse City	N/A
231-634	Bois Blanc	N/A
231-635	Mackinaw City	8/27/2002
231-636	Howard City	8/12/2002
231-637	Northport	8/31/2001
231-638	Muskegon	3/9/2001
231-639	Beulah	8/27/2002
231-640	Lake Ann	8/30/2002
231-642	Traverse City	4/2/2001
231-643	Morley	8/27/2002
231-645	Traverse City	N/A
231-646	Ellsworth	6/18/2001
231-647	Coral	8/27/2001
231-648	Howard City	1/9/2001
231-649	Traverse City	7/19/2002
231-651	Beulah	8/30/2002
231-652	Newaygo	N/A
231-655	Manistee	12/19/2014
231-656	Kalkaska	8/27/2002
231-660	Big Rapids	8/27/2002
231-663	Mesick	3/7/2022
231-666	Muskegon	10/9/2017
231-667	Marion	8/30/2002
231-668	Traverse City	4/29/2002
231-670	Muskegon	2/21/2001
231-672	Muskegon	11/12/2001
231-674	Grant	5/18/2001
231-675	Boyne City	3/29/2002
231-676	Bellaire	8/30/2002
231-678	Brethren	1/19/2005
231-679	Big Rapids	10/24/2002
231-680	Reed City	8/19/2002
231-681	Fruitport	6/18/2001
231-682	Alden	4/22/2002
231-683	Muskegon	7/9/2001
231-685	Ravenna	9/25/2014
231-686	Frankfort	8/27/2002
231-688	Merritt	2/19/2020
231-689	Whitecloud	N/A
231-690	Ludington	7/19/2002
231-695	Howard City	7/11/2001
231-699	Fountain	2/22/2022

NPANXX	Area Served¹	Date²
231-707	Newaygo	2/25/2016
231-709	Traverse City	N/A
231-712	Muskegon	N/A
231-714	Traverse City	N/A
231-715	Traverse City	N/A
231-719	Muskegon	N/A
231-720	Muskegon	N/A
231-721	Hart	8/27/2002
231-722	Muskegon	N/A
231-723	Manistee	N/A
231-724	Muskegon	N/A
231-725	Muskegon	N/A
231-726	Muskegon	N/A
231-727	Muskegon	N/A
231-728	Muskegon	N/A
231-729	Irons	8/30/2002
231-730	Muskegon	N/A
231-731	Shelby	10/12/2001
231-732	Morley	N/A
231-733	Muskegon	N/A
231-734	Evart	N/A
231-735	Traverse City	6/18/2001
231-736	Muskegon	N/A
231-737	Muskegon	N/A
231-739	Muskegon	N/A
231-740	Muskegon	N/A
231-742	Hart	N/A
231-743	Marion	N/A
231-744	Muskegon	N/A
231-745	Baldwin	N/A
231-746	Cheboygan	2/18/2022
231-747	Muskegon	N/A
231-750	Muskegon	N/A
231-751	Walloon Lk	10/6/2014
231-753	Petoskey	6/18/2001
231-755	Muskegon	N/A
231-757	Scottville	N/A
231-758	Petoskey	N/A
231-759	Muskegon	N/A
231-760	Muskegon	N/A
231-762	Amble	N/A
231-763	Amble	4/19/2019
231-764	Fife Lake	8/31/2001
231-766	Muskegon	N/A
231-767	Muskegon	N/A
231-768	Le Roy	N/A
231-769	Muskegon	N/A
231-771	Elk Rapids	3/22/2016
231-772	Wellston	3/7/2022
231-773	Muskegon	N/A
231-774	Interlochen	1/19/2005
231-775	Cadillac	N/A
231-776	Petoskey	8/27/2002
231-777	Muskegon	N/A
231-778	Traverse City	8/27/2002
231-779	Cadillac	N/A
231-780	Muskegon	N/A
231-782	Cheboygan	8/27/2002
231-786	Traverse City	3/24/2021
231-787	Whitecloud	11/7/2014
231-788	Muskegon	N/A
231-790	Freesoil	6/18/2001
231-791	Reed City	5/18/2001
231-792	Mancelona	8/27/2002
231-793	Whitecloud	1/9/2001
231-794	Manistee	8/30/2002
231-796	Big Rapids	N/A
231-797	Luther	N/A
231-798	Muskegon	N/A
231-799	Muskegon	N/A

NPANXX	Area Served¹	Date²
231-800	Luther	10/2/2017
231-803	Morley	5/18/2001
231-805	Kaleva	1/19/2005
231-806	Coral	8/27/2002
231-808	Central Lake	8/12/2002
231-813	Ludington	2/8/2001
231-818	Cheboygan	N/A
231-819	Tustin	10/6/2014
231-821	Holton	N/A
231-822	Beulah	8/27/2001
231-823	Stanwood	N/A
231-824	Manton	N/A
231-825	Mcbain	N/A
231-826	Falmouth	N/A
231-828	Twin Lake	N/A
231-829	Tustin	N/A
231-830	Muskegon	N/A
231-831	East Jordan	5/21/2021
231-832	Reed City	N/A
231-833	Wolverine	4/11/2005
231-834	Grant	N/A
231-835	Glen Lake	8/30/2002
231-836	Evart	8/27/2002
231-837	Fremont	N/A
231-838	Petoskey	3/29/2002
231-839	Lake City	N/A
231-842	Cadillac	8/27/2002
231-843	Ludington	N/A
231-844	Indian River	6/18/2001
231-845	Ludington	N/A
231-846	Cadillac	N/A
231-848	Wellston	N/A
231-852	Ludington	N/A
231-853	Ravenna	N/A
231-854	Hesperia	N/A
231-855	Muskegon	N/A
231-856	Morley	N/A
231-859	Dublin	N/A
231-861	Shelby	N/A
231-862	Hoxeyville	N/A
231-864	Bear Lake	N/A
231-865	Fruitport	N/A
231-866	Suttons Bay	8/30/2002
231-867	Chippewa Lake	N/A
231-869	Pentwater	N/A
231-871	Beulah	N/A
231-872	Reed City	N/A
231-873	Hart	N/A
231-874	Wolverine	8/27/2002
231-875	Fruitport	7/6/2001
231-876	Cadillac	N/A
231-877	Northport	N/A
231-878	Cadillac	7/19/2002
231-879	Fife Lake	N/A
231-880	Muskegon	9/8/2021
231-881	Petoskey	N/A
231-882	Beulah	N/A
231-883	Traverse City	N/A
231-884	Cadillac	N/A
231-885	Mesick	N/A
231-886	Kalkaska	N/A
231-887	Manistee	N/A
231-888	Twin Lake	6/16/2015
231-889	Onekama	N/A
231-890	Traverse City	N/A
231-893	Whitehall	N/A
231-894	Whitehall	N/A
231-898	Carr	N/A
231-899	Northport	8/27/2002

NPANXX	Area Served¹	Date²
231-900	Muskegon	5/13/2019
231-902	Hart	8/27/2001
231-903	Muskegon	4/29/2002
231-907	Ludington	9/3/2002
231-908	Mcbain	8/27/2002
231-912	Reed City	8/30/2002
231-916	Mancelona	6/18/2001
231-920	Cadillac	N/A
231-922	Traverse City	N/A
231-923	Hart	5/18/2001
231-924	Fremont	N/A
231-925	Scottville	8/27/2002
231-928	Fremont	N/A
231-929	Traverse City	N/A
231-930	Beulah	6/18/2001
231-932	Traverse City	N/A
231-933	Traverse City	N/A
231-935	Traverse City	N/A
231-936	Scottville	6/18/2001
231-937	Howard City	N/A
231-938	Traverse City	N/A
231-939	Petoskey	8/9/2017
231-941	Traverse City	N/A
231-942	Cadillac	6/18/2001
231-943	Traverse City	N/A
231-944	Traverse City	N/A
231-946	Traverse City	N/A
231-947	Traverse City	N/A
231-955	Muskegon	N/A
231-963	Mcbain	2/28/2022
231-966	Freesoil	2/22/2022
231-968	Cadillac	9/16/2021
231-970	Bear Lake	8/30/2002
231-972	Mecosta	N/A
231-974	Grant	8/27/2002
231-977	Mackinaw City	2/19/2020
231-981	Whitehall	N/A
231-994	Lake Leelanau	1/19/2005
231-995	Traverse City	N/A
231-999	Central Lake	8/24/2015

For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
Assignment date. N/A - mostly central office codes assigned before 2001.
NXX prefixes last updated: November 22, 2024

Cities in area code 231

City¹	County	Time Zone²
Acme	Grand Traverse	E
Afton	Cheboygan	E
Alanson	Emmet	E
Alba	Antrim	E
Alden	Antrim	E
Arcadia	Manistee	E
Bailey	Muskegon	E
Baldwin	Lake	E
Bay Shore	Charlevoix	E
Bear Lake	Manistee	E
Beaver Island	Charlevoix	E
Bellaire	Antrim	E
Benzonia	Benzie	E
Beulah	Benzie	E
Big Rapids	Mecosta	E
Bitely	Newaygo	E
Boon	Wexford	E
Boyne City	Charlevoix	E
Boyne Falls	Charlevoix	E
Branch	Mason	E
Brethren	Manistee	E
Brohman	Newaygo	E
Brutus	Emmet	E
Buckley	Wexford	E
Burt Lake	Cheboygan	E
Cadillac	Wexford	E
Carp Lake	Emmet	E
Casnovia	Muskegon	E
Cedar	Leelanau	E
Central Lake	Antrim	E
Charlevoix	Charlevoix	E
Chase	Lake	E
Cheboygan	Cheboygan	E
Chippewa Lake	Mecosta	E
Conway	Emmet	E
Copemish	Manistee	E
Coral	Montcalm	E
Cross Village	Emmet	E
Custer	Mason	E
East Jordan	Charlevoix	E
Eastlake	Manistee	E
Eastport	Antrim	E
Elberta	Benzie	E
Elk Rapids	Antrim	E
Ellsworth	Antrim	E
Elmira	Otsego	E
Empire	Leelanau	E
Evart	Osceola	E
Falmouth	Missaukee	E
Fife Lake	Kalkaska	E
Filer City	Manistee	E
Fountain	Mason	E
Frankfort	Benzie	E
Free Soil	Mason	E
Fremont	Newaygo	E
Fruitport	Muskegon	E
Glen Arbor	Leelanau	E
Good Hart	Emmet	E
Gowen	Kent	E
Grant	Newaygo	E
Grawn	Grand Traverse	E
Greenville	Montcalm	E
Harbor Springs	Emmet	E
Harrietta	Wexford	E
Hart	Oceana	E
Hersey	Osceola	E
Hesperia	Oceana	E
Holton	Muskegon	E
Honor	Benzie	E
Howard City	Montcalm	E
Idlewild	Lake	E
Indian River	Cheboygan	E
Interlochen	Grand Traverse	E
Irons	Lake	E
Kaleva	Manistee	E
Kalkaska	Kalkaska	E
Kewadin	Antrim	E
Kingsley	Grand Traverse	E
Lake Ann	Benzie	E
Lake City	Missaukee	E
Lake Leelanau	Leelanau	E
Leland	Leelanau	E
Leroy	Osceola	E
Levering	Emmet	E
Ludington	Mason	E
Luther	Lake	E
Mackinaw City	Cheboygan	E
Mancelona	Antrim	E
Manistee	Manistee	E
Manton	Wexford	E
Maple City	Leelanau	E
Marion	Osceola	E
Mayfield	Grand Traverse	E
Mc Bain	Missaukee	E
Mears	Oceana	E
Mecosta	Mecosta	E
Merritt	Missaukee	E
Mesick	Wexford	E
Montague	Muskegon	E
Morley	Mecosta	E
Mullett Lake	Cheboygan	E
Muskegon	Muskegon	E
New Era	Oceana	E
Newaygo	Newaygo	E
Northport	Leelanau	E
Oden	Emmet	E
Old Mission	Grand Traverse	E
Omena	Leelanau	E
Onekama	Manistee	E
Paris	Mecosta	E
Pellston	Emmet	E
Pentwater	Oceana	E
Petoskey	Emmet	E
Pierson	Montcalm	E
Pointe Aux Pins	Mackinac	E
Rapid City	Kalkaska	E
Ravenna	Muskegon	E
Reed City	Osceola	E
Rodney	Mecosta	E
Rothbury	Oceana	E
Scottville	Mason	E
Sears	Osceola	E
Shelby	Oceana	E
South Boardman	Kalkaska	E
Stanwood	Mecosta	E
Suttons Bay	Leelanau	E
Sylvan Beach	Muskegon	E
Thompsonville	Benzie	E
Topinabee	Cheboygan	E
Traverse City	Grand Traverse	E
Trufant	Montcalm	E
Tustin	Osceola	E
Twin Lake	Muskegon	E
Walhalla	Mason	E
Walkerville	Oceana	E
Walloon Lake	Charlevoix	E
Wellston	Manistee	E
White Cloud	Newaygo	E
Whitehall	Muskegon	E
Williamsburg	Grand Traverse	E
Wolverine	Cheboygan	E

Listed above are most places served by USA area code 231. When multiple places in a US state share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
E stands for Eastern Time (currently ).