United States Postal Service
Postal Zone Charts   (Effective Date: June 30, 2002)
 
To find your zone from 70656 (my zip code), use the first 3 digits of your zip code.  For example, if your zip is 29204, you will look for 292.  It is in the first column - 270..299, and that is zone 5.
 
ZIP Code
Prefix

Zone
ZIP Code
Prefix

Zone
ZIP Code
Prefix

Zone
ZIP Code
Prefix

Zone
005 6 387 3 636..639 4 776..777 1*
006..009 8 388 4 640..642 5 778..784 3*
010..013 6 389..396 3 644..646 5 785 4*
014..059 7 397..399 4 647..648 4 786..789 3*
060..098 6 400..418 5 649 5 790..797 4*
100..128 6 420..424 4 650..658 4 798..799 5*
129 7 425..427 5 660..666 5 800..815 5
130..149 6 430..443 5 667 4 816 6
150..154 5 444..445 6 668..669 5 820 5
155..212 6 446..475 5 670..673 4 821..832 6
214..227 6 476..477 4 674 5 833 7
228..229 5 478..483 5 675 4 834 6
230..238 6 484..487 6 676..681 5 835..838 7
239..253 5 488..495 5 683..693 5 840..847 6
254 6 496..499 6 700..701 3 850 6
255..266 5 500..516 5 703 2 852..853 6
267 6 520..528 5 704 3 855..857 6
268 5 530..532 5 705 1 859..860 6
270..299 5 534..535 5 706 1* 863..864 6
300..303 4 537..540 5 707..708 2 865 5
304..306 5 541..543 6 710..712 3* 870..875 5
307 4 544 5 713..714 2 877..884 5
308..309 5 545 6 716..717 3 885 5*
310..312 4 546..547 5 718 3* 889..891 6
313..315 5 548 6 719..722 3 893 6
316..319 4 549..555 5 723..731 4 894..895 7
320..322 5 556..558 6 733 3* 897..898 7
323..325 4 559..561 5 734..738 4 900..908 7
326..342 5 562..567 6 739 5 910..928 7
344 5 570..571 5 740..741 4 930..954 7
346..347 5 572..577 6 743..746 4 955 8
349 5 580..588 6 747 3* 956..966 7
350..352 4 590..593 6 748..749 4 967..975 8
354..364 4 594..599 7 750..758 3* 976..979 7
365..366 3 600..619 5 759 2* 980..986 8
367..368 4 620 4 760..762 3* 988..989 8
369 3 622 4 763 4* 990..994 7
370..375 4 623..628 5 764..767 3* 995..999 8
376..379 5 629..633 4 768..769 4*
380..386 4 634..635 5 770..775 2*