TEN DIGIT DIALING

Ten digit dialing (area code + seven digit number) is necessary when two or more area codes cover the same geographic area. This is called an area code overlay. In this situation two or more different homes in the same geographic area can have the same seven digit phone number but each would have a different area code. Ten digit dialing within area code overlays permits the phone companies to route your call to the correct subscriber.

Most area code overlays involve two area codes covering the same geographic area, however, three or more area codes are used in some highly populated areas. An example is in the state of New York where area codes (212, 332, 646 and 917) and (718, 347, 917 and 929) are utilized as overlays.

With seven digit dialing a caller is permitted to dial only the local seven digit number, without the area code, if the call is to another subscriber within the same area code and no overlays exist. Simply being permitted to dial a seven digit number within the same area code does not mean that long distance charges are not incurred.

AREA CODE	LOCATION	DIALING PLAN	COMMENTS
201	New Jersey	10 Digits
203	Connecticut	10 Digits	10 Digits is required in all Connecticut area codes.
204	Manitoba	011
208	Idaho	10 Digits
210	Texas	011	10 Digits
212	New York	1+10 Digits
214	Texas	011	10 Digits
215	Pennsylvania	10 Digits (see note) otherwise 1+10 Digits	10 Digits is permitted between area codes 215, 267, 484 and 610. All other calls are 1+10 digits.
220	Ohio	10 Digits	1+ 10 Digits is permitted
223	Pennsylvania	10 Digits
224	Illinois	1+10 Digits
226	Ontario	011
234	Ohio	10 Digits
236	British Columbia	10 Digits
240	Maryland	10 Digits
248	Michigan	10 Digits
249	Ontario	10 Digits
250	British Columbia	10 Digits
256	Alabama	10 Digits
267	Pennsylvania	10 Digits (see note) otherwise	1+10 Digits or 10 Digits is permitted between area codes 215, 267, 484 and 610. All other calls are 1+10 digits.
270	Kentucky	10 Digits
272	Pennsylvania	10 Digits
279	California	1+10 Digits
281	Texas	10 Digits
289	Ontario	10 Digits
301	Maryland	10 Digits
303	Colorado	10 Digits
304	West Virginia	10 Digits
305	Florida	10 Digits except in Florida Keys. See note.	Florida Keys - 7 Digit Dialing Permitted
306	Saskatchewan	10 Digits
310	California	1+10 Digits
312	Illinois	1+10 Digits
315	New York	1+10 Digits
317	Indiana	10 Digits
321	Florida	10 Digits except in Brevard County. See Note	Brevard County - 7 Digit Dialing Permitted
330	Ohio	10 Digits
331	Illinois	1+10 Digits
332	New York	1+10 Digits
336	North Carolina	10 Digits
339	Massachusetts	10 Digits
343	Ontario	10 Digits
346	Texas	10 Digits
347	New York	1+10 Digits
351	Massachusetts	10 Digits
360	Washington	10 Digits
364	Kentucky	10 Digits
365	Ontario	10 Digits
380	Ohio	10 Digits
385	Utah	10 Digits
402	Nebraska	10 Digits
403	Alberta	10 Digits
404	Georgia	10 Digits
407	Florida	10 Digits
408	California	10 Digits
410	Maryland	10 Digits
412	Pennsylvania	10 Digits (see note) otherwise 1+10 Digits	10 Digits is permitted between area codes 412, 724, 878. All other calls are 1+10 digits.
415	California	1+10 Digits
416	Ontario	10 Digits
418	Quebec	10 Digits
419	Ohio	10 Digits
424	California	1+10 Digits
430	Texas	10 Digits
431	Manitoba	10 Digits
437	Ontario	10 Digits
438	Quebec	10 Digits
442	California	10 Digits
443	Maryland	10 Digits
445	Pennsylvania	10 Digits (see note) otherwise 1+10 Digits	10 Digits is permitted between area codes 215, 267, 445, 484 and 610. All other calls are 1+10 digits.
450	Quebec	10 Digits
458	Oregon	10 Digits
463	Indiana	10 Digits
469	Texas	10 Digits
470	Georgia	10 Digits
475	Connecticut	10 Digits	10 Digits is required in all Connecticut area codes.
484	Pennsylvania	10 Digits (see note) otherwise 1+10 Digits	10 Digits is permitted between area codes 215, 267, 484 and 610. All other calls are 1+10 digits.
503	Oregon	10 Digits
508	Massachusetts	10 Digits
512	Texas	10 Digits
514	Quebec	10 Digits
518	New York	1+10 Digits
519	Ontario	10 Digits
531	Nebraska	10 Digits
534	Wisconsin	10 Digits
539	Oklahoma	10 Digits
541	Oregon	10 Digits
548	Ontario	10 Digits
551	New Jersey	10 Digits
564	Washington	10 Digits
567	Ohio	10 Digits
570	Pennsylvania	10 Digits
571	Virginia	10 Digits
579	Quebec	10 Digits
581	Quebec	10 Digits
587	Alberta	10 Digits
601	Mississippi	10 Digits
604	British Columbia	10 Digits
609	New Jersey	10 Digits
610	Pennsylvania	10 Digits (see note) otherwise 1+10 Digits	10 Digits is permitted between area codes 215, 267, 484 and 610. All other calls are 1+10 digits.
613	Ontario	10 Digits
614	Ohio	10 Digits
615	Tennessee	10 Digits
617	Massachusetts	10 Digits
628	California	1+10 Digits
629	Tennessee	10 Digits
630	Illinois	1+10 Digits
639	Saskatchewan	10 Digits
646	New York	1+10 Digits
640	New Jersey	10 Digits
647	Ontario	10 Digits
657	California	1+10 Digits
658	Jamaica	10 Digits
667	Maryland	10 Digits
669	California	1+10 Digits
678	Georgia	10 Digits
680	New York	1+10 Digits
681	West Virginia	research
682	Texas	10 Digits
702	Nevada	10 Digits
703	Virginia	10 Digits
704	North Carolina	10 Digits
705	Ontario	10 Digits
706	Georgia	10 Digits
713	Texas	10 Digits
714	California	1+10 Digits
715	Wisconsin	10 Digits
717	Pennsylvania	10 Digits
718	New York	1+10 Digits
720	Colorado	10 Digits
724	Pennsylvania	10 Digits	10 Digits is permitted between area codes 412, 724, 878. All other calls are 1+10 digits.
725	Nevada	10 Digits
726	Texas	011	10 Digits
732	New Jersey	10 Digits	10 Digits is permitted between area codes 732 and 848. All other calls are 1+10 digits.
737	Texas	10 Digits
740	Ohio	10 Digits	1+ 10 Digits is permitted
743	North Carolina	10 Digits
747	California	1+10 Digits
754	Florida	10 Digits
760	California	1+10 Digits
762	Georgia	10 Digits
769	Mississippi	10 Digits
770	Georgia	10 Digits
773	Illinois	1+10 Digits
774	Massachusetts	10 Digits
778	British Columbia	10 Digits
779	Illinois	1+10 Digits
780	Alberta	10 Digits
781	Massachusetts	10 Digits
782	Nova Scotia, Prince Edward Island	10 Digits
786	Florida	10 Digits
787	Puerto Rico	10 Digits
801	Utah	10 Digits
805	California	1+10 Digits
809	Dominican Republic	10 Digits
812	Indiana	10 Digits
815	Illinois	1+10 Digits
817	Texas	10 Digits
818	California	1+10 Digits
819	Quebec	10 Digits
820	California	1+10 Digits
825	Alberta	10 Digits
829	Dominican Republic	10 Digits
832	Texas	10 Digits
838	New York	1+10 Digits
843	South Carolina	1+10 Digits
847	Illinois	1+10 Digits
848	New Jersey	10 Digits	10 Digits is permitted between area codes 732 and 848. All other calls are 1+10 digits.
849	Dominican Republic	10 Digits
854	South Carolina	1+10 Digits
857	Massachusetts	10 Digits
860	Connecticut	10 Digits	10 Digits is required in all Connecticut area codes.
862	New Jersey	10 Digits	10 Digits is permitted between area codes 862 and 973. All other calls are 1+10 digits.
872	Illinois	10 Digits
873	Quebec	10 Digits
876	Jamaica	10 Digits
878	Pennsylvania	10 Digits	10 Digits is permitted between area codes 412, 724, 878. All other calls are 1+10 digits.
902	Nova Scotia, Prince Edward Island	10 Digits
903	Texas	10 Digits
905	Ontario	10 Digits
916	California	1+10 Digits
917	New York	10 Digits
918	Oklahoma	10 Digits
919	North Carolina	10 Digits
929	New York	1 +10 Digits
930	Indiana	10 Digits
938	Alabama	10 Digits
939	Puerto Rico	10 Digits
947	Michigan	10 Digits
954	Florida	10 Digits
959	Connecticut	10 Digits	10 Digits is required in all Connecticut area codes.
971	Oregon	10 Digits
972	Texas	10 Digits
973	New Jersey	10 Digits	10 Digits is permitted between area codes 862 and 973. All other calls are 1+10 digits.
978	Massachusetts	10 Digits
980	North Carolina	10 Digits
984	North Carolina	10 Digits
986	Idaho	10 Digits