AreaCodeLocations.info

Area Code 603

Area code 603 is in New Hampshire, USA , spanning 10 counties and serving 257 cities, including Manchester, Nashua or Concord; it currently uses 752 prefixes, assigned from 603-200-XXXX through 603-999-XXXX.

In service date for area code 603: January 01, 1947.

The current local time is .

603 area code location on a map — © OpenStreetMap contributors
For exact NPA boundaries see official 603 area code map

Phone number lookup

Locate any 603-NXX prefix:

NPANXX	Area Served¹	Date¹
603-200	Newmarket	8/16/2011
603-202	Concord	01/13/2023
603-203	Manchester	5/14/2003
603-204	Nashua	N/A
603-205	Portsmouth	N/A
603-206	Manchester	N/A
603-207	Derry	9/13/2022
603-208	Lyme	N/A
603-209	Keene	N/A
603-210	Suncook	N/A
603-212	Salem	N/A
603-213	Milford	11/8/2012
603-214	Errol	N/A
603-215	Berlin	N/A
603-216	Derry	N/A
603-217	Bristol	7/11/2001
603-218	Manchester	N/A
603-219	Concord	2/14/2001
603-221	Nashua	N/A
603-222	Manchester	N/A
603-223	Concord	N/A
603-224	Concord	N/A
603-225	Concord	N/A
603-226	Concord	N/A
603-227	Concord	N/A
603-228	Concord	N/A
603-229	Concord	N/A
603-230	Concord	N/A
603-231	Derry	5/3/2001
603-232	Manchester	N/A
603-233	Nashua	N/A
603-234	Derry	5/3/2001
603-235	Derry	5/3/2001
603-236	Campton	N/A
603-237	Colebrook	N/A
603-238	Plymouth	N/A
603-239	Winchester	N/A
603-240	Manchester	N/A
603-241	Manchester	N/A
603-242	Troy	N/A
603-243	Woodsville	7/20/2011
603-244	Raymond	N/A
603-245	Portsmouth	N/A
603-246	West Stewartstown	N/A
603-247	Derry	N/A
603-248	Dover	N/A
603-249	Milford	N/A
603-250	Center Harbor	N/A
603-251	Charlestown	2/28/2012
603-252	West Lebanon	3/22/2001
603-253	Center Harbor	N/A
603-254	Plymouth	N/A
603-255	Manchester	2/19/2020
603-256	West Chesterfield	N/A
603-257	Plaistow	N/A
603-258	Hollis	4/14/2017
603-259	Littleton	N/A
603-260	Derry	1/4/2013
603-261	Merrimack	N/A
603-262	Merrimack	N/A
603-263	Manchester	N/A
603-264	Manchester	N/A
603-265	New Boston	N/A
603-266	Tilton	N/A
603-267	Belmont	N/A
603-268	Suncook	N/A
603-269	Center Barnstead	N/A
603-270	Suncook	N/A
603-271	Concord	N/A
603-272	Piermont	N/A
603-273	Laconia	N/A
603-274	South Hampton	N/A
603-275	Derry	N/A
603-276	West Lebanon	N/A
603-277	Hanover	10/13/2006
603-278	Bretton Woods	N/A
603-279	Meredith	N/A
603-280	Barrington	N/A
603-281	Nashua	N/A
603-282	Canaan	N/A
603-283	Keene	N/A
603-284	Center Sandwich	N/A
603-285	Dover	N/A
603-286	Tilton	N/A
603-287	Claremont	N/A
603-288	Nashua	7/5/2017
603-289	Manchester	N/A
603-290	Concord	N/A
603-291	Greenville	10/26/2006
603-292	Newmarket	N/A
603-293	Laconia	N/A
603-294	Portsmouth	N/A
603-295	Durham	4/26/2001
603-296	Manchester	N/A
603-297	Center Ossipee	N/A
603-298	West Lebanon	N/A
603-299	Bartlett	7/28/2017

NPANXX	Area Served¹	Date¹
603-300	Chester	6/9/2003
603-301	Center Ossipee	7/11/2001
603-302	Manchester	9/19/2001
603-303	Raymond	3/9/2001
603-304	Enfield	N/A
603-305	Nashua	8/21/2001
603-306	Lebanon	12/18/2006
603-307	North Conway	9/6/2012
603-308	Hanover	9/30/2014
603-309	Newport	8/9/2013
603-310	Bedford	N/A
603-312	Dover	N/A
603-313	Keene	N/A
603-314	Manchester	N/A
603-315	Manchester	N/A
603-316	Milford	10/16/2017
603-317	Milan	N/A
603-318	Nashua	N/A
603-319	Portsmouth	N/A
603-320	Nashua	N/A
603-321	Nashua	N/A
603-322	West Lebanon	N/A
603-323	Tamworth	N/A
603-324	Nashua	N/A
603-325	New Boston	N/A
603-326	Berlin	N/A
603-327	Salem	N/A
603-328	Salem	N/A
603-329	Hampstead	N/A
603-330	Rochester	N/A
603-331	Colebrook	N/A
603-332	Rochester	N/A
603-333	Concord	N/A
603-334	Portsmouth	N/A
603-335	Rochester	N/A
603-336	Hinsdale	N/A
603-337	Rochester	N/A
603-338	Keene	N/A
603-339	Derry	N/A
603-340	Suncook	2/12/2001
603-341	Merrimack	N/A
603-342	Berlin	N/A
603-343	Dover	N/A
603-344	Suncook	N/A
603-345	Merrimack	N/A
603-346	Plymouth	N/A
603-347	Kingston	N/A
603-348	North Woodstock	N/A
603-349	West Lebanon	N/A
603-350	Milton	N/A
603-351	Goffstown	N/A
603-352	Keene	N/A
603-353	Orford	N/A
603-354	Keene	N/A
603-355	Keene	N/A
603-356	North Conway	N/A
603-357	Keene	N/A
603-358	Keene	N/A
603-359	Lebanon	N/A
603-360	Orford	6/11/2010
603-361	Manchester	5/18/2001
603-362	Hampstead	N/A
603-363	Spofford	N/A
603-364	Gilmanton Iron Works	N/A
603-365	Merrimack	5/4/2001
603-366	Laconia	N/A
603-367	Madison	N/A
603-368	Portsmouth	12/27/2017
603-369	Concord	N/A
603-370	Candia	10/17/2001
603-371	Peterborough	N/A
603-372	Claremont	N/A
603-373	Portsmouth	N/A
603-374	Bartlett	N/A
603-375	Ashland	7/19/2012
603-376	Dover	N/A
603-377	Merrimack	N/A
603-378	Plaistow	N/A
603-379	Rye Beach	N/A
603-380	Portsmouth	N/A
603-381	West Lebanon	N/A
603-382	Plaistow	N/A
603-383	Jackson	N/A
603-384	Goffstown	N/A
603-385	Manchester	N/A
603-386	Salem	N/A
603-387	Laconia	N/A
603-388	Colebrook	N/A
603-389	Durham	N/A
603-390	Jefferson	N/A
603-391	Manchester	N/A
603-392	Winchester	11/7/2006
603-393	Laconia	5/4/2001
603-394	South Hampton	N/A
603-395	Exeter	N/A
603-396	Merrimack	N/A
603-397	Durham	N/A
603-398	West Lebanon	N/A
603-399	Westmoreland	N/A

NPANXX	Area Served¹	Date¹
603-400	Hollis	8/31/2011
603-401	Salem	10/17/2001
603-402	Nashua	9/6/2012
603-403	Rochester	7/31/2018
603-404	Derry	1/4/2016
603-405	Somersworth	4/20/2016
603-406	Concord	12/21/2018
603-407	Belmont	5/6/2015
603-408	Berlin	12/9/2015
603-409	Laconia	10/13/2015
603-410	Concord	N/A
603-412	Plymouth	N/A
603-413	Manchester	N/A
603-414	Sunapee	N/A
603-415	Concord	N/A
603-416	Raymond	12/21/2018
603-417	Nashua	4/14/2015
603-418	Exeter	N/A
603-419	Suncook	N/A
603-420	Merrimack	N/A
603-421	Derry	N/A
603-422	Portsmouth	N/A
603-423	Merrimack	N/A
603-424	Merrimack	N/A
603-425	Derry	N/A
603-426	Derry	N/A
603-427	Portsmouth	N/A
603-428	Henniker	N/A
603-429	Merrimack	N/A
603-430	Portsmouth	N/A
603-431	Portsmouth	N/A
603-432	Derry	N/A
603-433	Portsmouth	N/A
603-434	Derry	N/A
603-435	Pittsfield	N/A
603-436	Portsmouth	N/A
603-437	Derry	N/A
603-438	Nashua	N/A
603-439	Keene	N/A
603-440	Merrimack	N/A
603-441	Rochester	9/9/2021
603-442	Lebanon	N/A
603-443	Lebanon	N/A
603-444	Littleton	N/A
603-445	North Walpole	N/A
603-446	Marlow	N/A
603-447	Conway	N/A
603-448	Lebanon	N/A
603-449	Milan	N/A
603-450	Concord	9/11/2018
603-451	Concord	4/8/2020
603-452	Conway	N/A
603-453	Hampstead	N/A
603-454	Sunapee	N/A
603-455	Laconia	N/A
603-456	Warner	N/A
603-457	Dover	11/27/2020
603-458	Salem	N/A
603-459	Nashua	N/A
603-460	Deerfield	N/A
603-461	Merrimack	N/A
603-462	Deerfield	N/A
603-463	Deerfield	N/A
603-464	Hillsboro	N/A
603-465	Hollis	N/A
603-466	Gorham	N/A
603-467	Manchester	N/A
603-468	Seabrook	N/A
603-469	Meriden	N/A
603-470	Concord	4/19/2001
603-471	Bedford	N/A
603-472	Bedford	N/A
603-473	Milton Mills	N/A
603-474	Seabrook	N/A
603-475	Salem	N/A
603-476	Center Sandwich	N/A
603-477	Claremont	N/A
603-478	Hillsboro Upper Village	N/A
603-479	Derry	N/A
603-480	Manchester	N/A
603-481	Plymouth	N/A
603-482	Errol	N/A
603-483	Candia	N/A
603-484	Nashua	9/21/2016
603-485	Suncook	N/A
603-486	Manchester	N/A
603-487	New Boston	N/A
603-488	Bedford	N/A
603-489	Hampstead	N/A
603-490	Derry	N/A
603-491	Concord	N/A
603-492	Manchester	N/A
603-493	Merrimack	N/A
603-494	Merrimack	N/A
603-495	Washington	N/A
603-496	Concord	N/A
603-497	Goffstown	N/A
603-498	Portsmouth	N/A
603-499	Keene	N/A

NPANXX	Area Served¹	Date¹
603-500	Tilton	6/15/2020
603-501	Portsmouth	N/A
603-502	Portsmouth	N/A
603-503	Lancaster	N/A
603-504	Claremont	N/A
603-505	Derry	10/9/2002
603-506	Manchester	10/29/2018
603-507	Rochester	7/28/2015
603-508	Pelham	8/8/2001
603-509	Rochester	9/24/2001
603-510	Meriden	3/29/2010
603-512	Manchester	N/A
603-513	Concord	N/A
603-514	Nashua	1/21/2021
603-515	Wolfeboro	N/A
603-516	Dover	N/A
603-517	Merrimack	N/A
603-518	Manchester	N/A
603-519	Exeter	10/4/2018
603-520	Laconia	N/A
603-521	Nashua	N/A
603-522	Sanbornville	N/A
603-523	Canaan	N/A
603-524	Laconia	N/A
603-525	Hancock	N/A
603-526	New London	N/A
603-527	Laconia	N/A
603-528	Laconia	N/A
603-529	Weare	N/A
603-530	Bristol	2/22/2002
603-531	Portsmouth	N/A
603-532	Jaffrey	N/A
603-533	Merrimack	N/A
603-534	Dover	N/A
603-535	Plymouth	N/A
603-536	Plymouth	N/A
603-537	Derry	N/A
603-538	Pittsburg	N/A
603-539	Center Ossipee	N/A
603-540	Manchester	8/21/2001
603-541	Manchester	5/21/2001
603-542	Claremont	N/A
603-543	Claremont	N/A
603-544	Melvin Village	N/A
603-545	Concord	N/A
603-546	Nashua	N/A
603-547	Greenfield	N/A
603-548	Derry	N/A
603-549	Derry	N/A
603-550	Dover	11/18/2021
603-551	Manchester	N/A
603-552	Derry	N/A
603-553	Derry	N/A
603-554	Milford	N/A
603-556	Laconia	N/A
603-557	Nashua	N/A
603-558	Claremont	N/A
603-559	Portsmouth	N/A
603-560	Salem	N/A
603-561	Nashua	N/A
603-562	Peterborough	N/A
603-563	Dublin	N/A
603-564	Manchester	N/A
603-565	Penacook	N/A
603-566	Nashua	N/A
603-567	Peterborough	N/A
603-568	Concord	8/6/2002
603-569	Wolfeboro	N/A
603-570	Portsmouth	N/A
603-571	Derry	N/A
603-573	Concord	N/A
603-574	Alstead	N/A
603-575	Littleton	N/A
603-576	Orford	N/A
603-577	Nashua	N/A
603-578	Nashua	N/A
603-579	Nashua	N/A
603-580	Exeter	N/A
603-581	Laconia	N/A
603-582	Merrimack	N/A
603-583	Exeter	N/A
603-584	Concord	6/29/2021
603-585	Fitzwilliam	N/A
603-586	Jefferson	N/A
603-587	Candia	N/A
603-588	Antrim	N/A
603-589	Nashua	N/A
603-590	Durham	N/A
603-591	Manchester	N/A
603-592	Spofford	N/A
603-593	Jaffrey	6/26/2003
603-594	Nashua	N/A
603-595	Nashua	N/A
603-596	Nashua	N/A
603-597	Lyme	N/A
603-598	Nashua	N/A
603-599	Nashua	N/A

NPANXX	Area Served¹	Date¹
603-600	Manchester	5/29/2020
603-601	Hampton	N/A
603-602	Rochester	12/4/2020
603-604	Rye Beach	N/A
603-605	Dover	N/A
603-606	Manchester	N/A
603-607	West Chesterfield	8/13/2020
603-608	Northwood	1/22/2002
603-609	Dover	N/A
603-610	Portsmouth	N/A
603-612	Plaistow	N/A
603-613	Colebrook	N/A
603-614	West Chesterfield	N/A
603-615	Manchester	N/A
603-616	Littleton	N/A
603-617	Dover	N/A
603-618	Pike	N/A
603-619	Laconia	9/1/2022
603-620	Merrimack	N/A
603-621	Manchester	N/A
603-622	Manchester	N/A
603-623	Manchester	N/A
603-624	Manchester	N/A
603-625	Manchester	N/A
603-626	Manchester	N/A
603-627	Manchester	N/A
603-628	Manchester	N/A
603-629	Manchester	N/A
603-630	Laconia	1/22/2002
603-631	Lancaster	2/22/2002
603-632	Enfield	N/A
603-633	Manchester	5/21/2001
603-634	Manchester	N/A
603-635	Pelham	N/A
603-636	Groveton	N/A
603-637	Bedford	N/A
603-638	Monroe	N/A
603-639	Manchester	N/A
603-640	Hanover	N/A
603-641	Manchester	N/A
603-642	Kingston	N/A
603-643	Hanover	N/A
603-644	Manchester	N/A
603-645	Manchester	N/A
603-646	Hanover	N/A
603-647	Manchester	N/A
603-648	Salisbury	N/A
603-649	Jaffrey	9/29/2022
603-650	Hanover	N/A
603-651	Center Ossipee	N/A
603-652	Milton	N/A
603-653	Hanover	N/A
603-654	Wilton	N/A
603-655	Manchester	N/A
603-656	Manchester	N/A
603-657	Manchester	N/A
603-658	Exeter	N/A
603-659	Newmarket	N/A
603-660	Goffstown	2/22/2002
603-661	Manchester	N/A
603-662	Conway	N/A
603-663	Manchester	N/A
603-664	Barrington	N/A
603-665	Manchester	N/A
603-666	Manchester	N/A
603-667	Lebanon	N/A
603-668	Manchester	N/A
603-669	Manchester	N/A
603-670	Merrimack	N/A
603-671	Franklin	N/A
603-672	Milford	N/A
603-673	Milford	N/A
603-674	Manchester	N/A
603-675	Plainfield	N/A
603-676	Hanover	N/A
603-677	Meredith	N/A
603-678	Lebanon	N/A
603-679	Epping	N/A
603-680	Hillsboro	N/A
603-681	Salem	N/A
603-682	Manchester	N/A
603-683	Merrimack	N/A
603-684	Lancaster	N/A
603-685	Salem	N/A
603-686	Exeter	9/12/2002
603-687	Jackson	N/A
603-688	Concord	2/24/2021
603-689	Nashua	N/A
603-690	Claremont	N/A
603-691	Exeter	9/13/2022
603-692	Somersworth	N/A
603-693	Epping	N/A
603-694	Chatham	N/A
603-695	Manchester	N/A
603-696	Manchester	5/17/2021
603-697	Dover	10/6/2022
603-698	Manchester	06/16/2023
603-699	Nashua	06/16/2023

NPANXX	Area Served¹	Date¹
603-701	New Durham	10/22/2009
603-702	Kingston	7/8/2002
603-703	Manchester	8/18/2004
603-704	Derry	N/A
603-705	Salisbury	11/17/2009
603-706	Raymond	N/A
603-707	Meredith	7/28/2004
603-708	Canterbury	2/18/2005
603-709	Plainfield	8/17/2004
603-710	Washington	3/2/2021
603-712	Pike	N/A
603-713	Nashua	9/13/2022
603-714	Bedford	11/19/2001
603-715	Concord	N/A
603-716	Manchester	6/4/2008
603-717	Concord	N/A
603-718	Nashua	5/8/2009
603-719	Keene	N/A
603-720	Troy	02/27/2023
603-721	Milford	7/8/2002
603-722	Manchester	5/14/2008
603-723	Berlin	N/A
603-724	Concord	N/A
603-725	Tamworth	N/A
603-726	Campton	N/A
603-727	Lebanon	N/A
603-728	North Woodstock	N/A
603-729	Tilton	N/A
603-730	North Conway	N/A
603-731	Concord	N/A
603-732	Milford	N/A
603-733	North Conway	N/A
603-734	Epping	N/A
603-735	Andover	N/A
603-736	Epsom	N/A
603-737	Laconia	N/A
603-738	Concord	N/A
603-739	North Woodstock	N/A
603-740	Dover	N/A
603-741	New Boston	N/A
603-742	Dover	N/A
603-743	Dover	N/A
603-744	Bristol	N/A
603-745	North Woodstock	N/A
603-746	Contoocook	N/A
603-747	Woodsville	N/A
603-748	Warner	6/20/2003
603-749	Dover	N/A
603-750	Dover	N/A
603-751	Pelham	N/A
603-752	Berlin	N/A
603-753	Penacook	N/A
603-754	Lancaster	N/A
603-755	Farmington	N/A
603-756	Walpole	N/A
603-757	Keene	N/A
603-758	Hampton	N/A
603-759	Nashua	N/A
603-760	Seabrook	5/20/2002
603-761	Littleton	N/A
603-762	Keene	N/A
603-763	Sunapee	N/A
603-764	Warren	N/A
603-765	Nashua	N/A
603-766	Portsmouth	N/A
603-767	Dover	N/A
603-768	Danbury	N/A
603-769	Milford	N/A
603-770	Exeter	N/A
603-771	Manchester	N/A
603-772	Exeter	N/A
603-773	Exeter	N/A
603-774	Dunbarton	N/A
603-775	Exeter	N/A
603-776	Barnstead	N/A
603-777	Exeter	N/A
603-778	Exeter	N/A
603-779	Plymouth	N/A
603-780	Canaan	N/A
603-781	Dover	N/A
603-782	Manchester	N/A
603-783	Canterbury	N/A
603-784	Peterborough	N/A
603-785	Manchester	N/A
603-786	Rumney	N/A
603-787	Woodsville	N/A
603-788	Lancaster	N/A
603-789	Danbury	N/A
603-790	West Lebanon	5/20/2002
603-791	Nashua	N/A
603-792	Manchester	N/A
603-793	Exeter	5/20/2002
603-794	Laconia	08/11/2023
603-795	Lyme	N/A
603-796	Boscawen	N/A
603-797	Plaistow	N/A
603-798	Chichester	N/A
603-799	Manchester	N/A

NPANXX	Area Served¹	Date¹
603-800	Meredith	12/9/2019
603-801	Milford	3/16/2001
603-802	Concord	9/13/2022
603-803	Keene	10/20/2016
603-804	Dover	08/31/2023
603-805	Concord	10/17/2023
603-808	Antrim	11/23/2009
603-809	Nashua	3/13/2007
603-810	Nashua	6/1/2021
603-812	Portsmouth	N/A
603-813	Center Barnstead	10/30/2009
603-814	Seabrook	7/30/2010
603-815	Durham	12/6/2007
603-816	Nashua	N/A
603-817	Dover	12/19/2001
603-818	Derry	7/8/2002
603-819	Plaistow	N/A
603-820	Merrimack	3/10/2008
603-821	Nashua	N/A
603-822	Rochester	N/A
603-823	Franconia	N/A
603-824	Salem	N/A
603-825	Manchester	1/13/2022
603-826	Charlestown	N/A
603-827	Harrisvl	N/A
603-828	Portsmouth	1/22/2002
603-829	Sunapee	N/A
603-831	Greenfield	12/14/2004
603-832	Laconia	N/A
603-833	Rochester	10/5/2004
603-834	Dover	N/A
603-835	Alstead	N/A
603-836	Manchester	5/20/2002
603-837	Whitefield	N/A
603-838	Lisbon	N/A
603-839	Farmington	N/A
603-840	Epsom	11/16/2009
603-841	Somersworth	N/A
603-842	Dover	N/A
603-843	Newport	N/A
603-845	Derry	N/A
603-846	Twin Mountain	N/A
603-847	Sullivan	N/A
603-848	Concord	N/A
603-850	Lisbon	9/20/2021
603-851	Manchester	N/A
603-852	Keene	N/A
603-853	Woodsville	N/A
603-854	Manchester	12/6/2002
603-855	Alton	10/30/2009
603-856	Concord	N/A
603-857	Suncook	4/21/2022
603-858	Manchester	N/A
603-859	New Durham	N/A
603-860	Manchester	N/A
603-861	Tamworth	N/A
603-862	Durham	4/26/2001
603-863	Newport	N/A
603-864	Nashua	N/A
603-865	Newport	N/A
603-866	Dover	N/A
603-867	Manchester	N/A
603-868	Durham	N/A
603-869	Bethlehem	N/A
603-870	Salem	N/A
603-871	Sanbornville	N/A
603-872	Gilmanton Iron Works	10/30/2009
603-873	Sunapee	N/A
603-874	Monroe	N/A
603-875	Alton	N/A
603-876	Marlborogh	N/A
603-877	New London	11/17/2009
603-878	Greenville	N/A
603-879	Nashua	N/A
603-880	Nashua	N/A
603-881	Nashua	N/A
603-882	Nashua	N/A
603-883	Nashua	N/A
603-884	Nashua	N/A
603-885	Nashua	N/A
603-886	Nashua	N/A
603-887	Chester	N/A
603-888	Nashua	N/A
603-889	Nashua	N/A
603-890	Salem	N/A
603-891	Nashua	N/A
603-892	Concord	N/A
603-893	Salem	N/A
603-894	Salem	N/A
603-895	Raymond	N/A
603-896	Salem	N/A
603-897	Nashua	N/A
603-898	Salem	N/A
603-899	Rindge	N/A

NPANXX	Area Served¹	Date¹
603-900	Newport	6/15/2020
603-901	Conway	2/26/2016
603-902	Sutton	11/17/2009
603-903	Keene	N/A
603-904	Walpole	8/22/2005
603-905	Barrington	9/20/2006
603-906	Barnstead	10/30/2009
603-910	Hampton	N/A
603-912	Salem	N/A
603-913	Merrimack	N/A
603-915	Gorham	2/22/2002
603-916	Hanover	03/24/2023
603-918	Hampton	4/19/2002
603-919	Rochester	07/05/2023
603-921	Nashua	7/6/2009
603-922	North Stratford	N/A
603-923	Rochester	N/A
603-924	Peterborough	N/A
603-925	Peterborough	N/A
603-926	Hampton	N/A
603-927	Sutton	N/A
603-928	Suncook	N/A
603-929	Hampton	N/A
603-930	Nashua	N/A
603-931	Concord	5/21/2015
603-932	Manchester	8/20/2008
603-933	Greenfield	7/7/2008
603-934	Franklin	N/A
603-935	Manchester	3/27/2006
603-937	Meredith	6/6/2008
603-938	Bradford	N/A
603-939	East Conway	N/A
603-941	Wolfeboro	N/A
603-942	Northwood	N/A
603-943	Nashua	N/A
603-944	South Hampton	12/19/2001
603-945	Manchester	8/1/2007
603-947	Plymouth	N/A
603-948	Rochester	2/26/2008
603-951	Milan	N/A
603-952	Salem	N/A
603-953	Dover	N/A
603-956	Portsmouth	7/21/2022
603-957	Portsmouth	1/22/2002
603-960	Campton	1/22/2008
603-961	Chichester	11/17/2009
603-964	Rye Beach	N/A
603-965	Derry	N/A
603-966	Nashua	2/22/2002
603-967	Hampton	N/A
603-968	Ashland	N/A
603-969	Portsmouth	5/20/2002
603-970	Dover	3/22/2006
603-971	Rindge	N/A
603-973	Rochester	5/20/2002
603-974	Plaistow	N/A
603-975	Boscawen	11/16/2009
603-977	Andover	11/17/2009
603-978	Dover	3/16/2001
603-986	North Conway	4/19/2002
603-988	Portsmouth	10/17/2001
603-989	Pike	N/A
603-991	Littleton	2/22/2002
603-992	Danbury	N/A
603-994	Rochester	N/A
603-995	Henniker	8/9/2002
603-996	Plymouth	8/9/2002
603-997	Hampton	8/9/2002
603-998	Laconia	7/8/2002
603-999	Salem	12/9/2019

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: June 3, 2025

Cities in area code 603

City¹	County	Time Zone¹
Acworth	Sullivan	E
Alstead	Cheshire	E
Alton	Belknap	E
Alton Bay	Belknap	E
Amherst	Hillsborough	E
Andover	Merrimack	E
Antrim	Hillsborough	E
Ashland	Grafton	E
Ashuelot	Cheshire	E
Atkinson	Rockingham	E
Auburn	Rockingham	E
Barnstead	Belknap	E
Barrington	Strafford	E
Bartlett	Carroll	E
Bath	Grafton	E
Bedford	Hillsborough	E
Belmont	Belknap	E
Bennington	Hillsborough	E
Berlin	Coos	E
Bethlehem	Grafton	E
Boscawen	Merrimack	E
Bow	Merrimack	E
Bradford	Merrimack	E
Bretton Woods	Coos	E
Bristol	Grafton	E
Brookline	Hillsborough	E
Campton	Grafton	E
Canaan	Grafton	E
Candia	Rockingham	E
Canterbury	Merrimack	E
Center Barnstead	Belknap	E
Center Conway	Carroll	E
Center Harbor	Belknap	E
Center Ossipee	Carroll	E
Center Sandwich	Carroll	E
Center Strafford	Strafford	E
Center Tuftonboro	Carroll	E
Charlestown	Sullivan	E
Chester	Rockingham	E
Chesterfield	Cheshire	E
Chichester	Merrimack	E
Chocorua	Carroll	E
Claremont	Sullivan	E
Colebrook	Coos	E
Concord	Merrimack	E
Contoocook	Merrimack	E
Conway	Carroll	E
Cornish	Sullivan	E
Cornish Flat	Sullivan	E
Danbury	Merrimack	E
Danville	Rockingham	E
Deerfield	Rockingham	E
Derry	Rockingham	E
Dover	Strafford	E
Drewsville	Cheshire	E
Dublin	Cheshire	E
Dunbarton	Merrimack	E
Durham	Strafford	E
East Andover	Merrimack	E
East Candia	Rockingham	E
East Derry	Rockingham	E
East Hampstead	Rockingham	E
East Kingston	Rockingham	E
East Wakefield	Carroll	E
Eaton Center	Carroll	E
Effingham	Carroll	E
Elkins	Merrimack	E
Enfield	Grafton	E
Enfield Center	Grafton	E
Epping	Rockingham	E
Epsom	Merrimack	E
Errol	Coos	E
Etna	Grafton	E
Exeter	Rockingham	E
Farmington	Strafford	E
Fitzwilliam	Cheshire	E
Francestown	Hillsborough	E
Franconia	Grafton	E
Franklin	Merrimack	E
Freedom	Carroll	E
Fremont	Rockingham	E
Georges Mills	Sullivan	E
Gilford	Belknap	E
Gilmanton	Belknap	E
Gilmanton Iron Works	Belknap	E
Gilsum	Cheshire	E
Glen	Carroll	E
Glencliff	Grafton	E
Goffstown	Hillsborough	E
Gorham	Coos	E
Goshen	Sullivan	E
Grafton	Grafton	E
Grantham	Sullivan	E
Greenfield	Hillsborough	E
Greenland	Rockingham	E
Greenville	Hillsborough	E
Groveton	Coos	E
Guild	Sullivan	E
Hampstead	Rockingham	E
Hampton	Rockingham	E
Hampton Falls	Rockingham	E
Hancock	Hillsborough	E
Hanover	Grafton	E
Harrisville	Cheshire	E
Haverhill	Grafton	E
Hebron	Grafton	E
Henniker	Merrimack	E
Hill	Merrimack	E
Hillsborough	Hillsborough	E
Hinsdale	Cheshire	E
Holderness	Grafton	E
Hollis	Hillsborough	E
Hooksett	Merrimack	E
Hopkinton	Merrimack	E
Hudson	Hillsborough	E
Intervale	Carroll	E
Jackson	Carroll	E
Jaffrey	Cheshire	E
Jefferson	Coos	E
Kearsarge	Carroll	E
Keene	Cheshire	E
Kingston	Rockingham	E
Laconia	Belknap	E
Lancaster	Coos	E
Lebanon	Grafton	E
Lee	Strafford	E
Lempster	Sullivan	E
Lincoln	Grafton	E
Lisbon	Grafton	E
Litchfield	Hillsborough	E
Littleton	Grafton	E
Lochmere	Belknap	E
Londonderry	Rockingham	E
Loudon	Merrimack	E
Lyme	Grafton	E
Lyme Center	Grafton	E
Lyndeborough	Hillsborough	E
Madbury	Strafford	E
Madison	Carroll	E
Manchester	Hillsborough	E
Marlborough	Cheshire	E
Marlow	Cheshire	E
Melvin Village	Carroll	E
Meredith	Belknap	E
Meriden	Sullivan	E
Merrimack	Hillsborough	E
Milan	Coos	E
Milford	Hillsborough	E
Milton	Strafford	E
Milton Mills	Strafford	E
Mirror Lake	Carroll	E
Monroe	Grafton	E
Mont Vernon	Hillsborough	E
Moultonborough	Carroll	E
Mount Washington	Coos	E
Nashua	Hillsborough	E
Nelson	Cheshire	E
New Boston	Hillsborough	E
New Castle	Rockingham	E
New Durham	Strafford	E
New Hampton	Belknap	E
New Ipswich	Hillsborough	E
New London	Merrimack	E
Newbury	Merrimack	E
Newfields	Rockingham	E
Newington	Strafford	E
Newmarket	Rockingham	E
Newport	Sullivan	E
Newton	Rockingham	E
Newton Junction	Rockingham	E
North Conway	Carroll	E
North Hampton	Rockingham	E
North Haverhill	Grafton	E
North Salem	Rockingham	E
North Sandwich	Carroll	E
North Stratford	Coos	E
North Sutton	Merrimack	E
North Walpole	Cheshire	E
North Woodstock	Grafton	E
Northwood	Rockingham	E
Nottingham	Rockingham	E
Orford	Grafton	E
Ossipee	Carroll	E
Pelham	Hillsborough	E
Peterborough	Hillsborough	E
Piermont	Grafton	E
Pike	Grafton	E
Pittsburg	Coos	E
Pittsfield	Merrimack	E
Plainfield	Sullivan	E
Plaistow	Rockingham	E
Plymouth	Grafton	E
Portsmouth	Rockingham	E
Randolph	Coos	E
Raymond	Rockingham	E
Rindge	Cheshire	E
Rochester	Strafford	E
Rollinsford	Strafford	E
Rumney	Grafton	E
Rye	Rockingham	E
Rye Beach	Rockingham	E
Salem	Rockingham	E
Salisbury	Merrimack	E
Sanbornton	Belknap	E
Sanbornville	Carroll	E
Sandown	Rockingham	E
Seabrook	Rockingham	E
Silver Lake	Carroll	E
Somersworth	Strafford	E
South Acworth	Sullivan	E
South Newbury	Merrimack	E
South Sutton	Merrimack	E
South Tamworth	Carroll	E
Spofford	Cheshire	E
Springfield	Sullivan	E
Stinson Lake	Grafton	E
Stoddard	Cheshire	E
Strafford	Strafford	E
Stratham	Rockingham	E
Sugar Hill	Grafton	E
Sullivan	Cheshire	E
Sunapee	Sullivan	E
Suncook	Merrimack	E
Swanzey	Cheshire	E
Tamworth	Carroll	E
Temple	Hillsborough	E
Thornton	Grafton	E
Tilton	Belknap	E
Troy	Cheshire	E
Twin Mountain	Coos	E
Union	Strafford	E
Walpole	Cheshire	E
Warner	Merrimack	E
Warren	Grafton	E
Washington	Sullivan	E
Waterville Valley	Grafton	E
Weare	Hillsborough	E
Wentworth	Grafton	E
West Chesterfield	Cheshire	E
West Lebanon	Grafton	E
West Nottingham	Rockingham	E
West Ossipee	Carroll	E
West Peterborough	Hillsborough	E
West Stewartstown	Coos	E
West Swanzey	Cheshire	E
Westmoreland	Cheshire	E
Whitefield	Coos	E
Wilmot	Merrimack	E
Wilton	Hillsborough	E
Winchester	Cheshire	E
Windham	Rockingham	E
Winnisquam	Belknap	E
Wolfeboro	Carroll	E
Wolfeboro Falls	Carroll	E
Wonalancet	Carroll	E
Woodstock	Grafton	E
Woodsville	Grafton	E

Listed above are most places served by USA area code 603. 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 ).