A PO BOX number can be less than or more than four digit. For post office boxes, the general rule is that each box has its own ZIP+4 code.
The last four digit is often one of the following:
1. Zero plus the last three digits of the box number (eg. PO BOX 1001, Los Angeles CA 90001-0001).
2. The last four digits of the box number (eg. PO BOX 9991, Twin Peaks CA 92391-9991).
3. If the box number is less than four digits, enough zeros prepended to the front of the box number to produce a four-digit number(eg. PO BOX 1, Shreveport LA 71161-0001).
However, there is no uniform rule, the zip code plus four is for reference only, the ZIP+4 code must be looked up individually for each box in the USPS offical website.
PO BOX 621, ALAMOGORDO, NM 88311-0621
PO BOX 622, ALAMOGORDO, NM 88311-0622
PO BOX 623, ALAMOGORDO, NM 88311-0623
PO BOX 624, ALAMOGORDO, NM 88311-0624
PO BOX 625, ALAMOGORDO, NM 88311-0625
PO BOX 626, ALAMOGORDO, NM 88311-0626
PO BOX 627, ALAMOGORDO, NM 88311-0627
PO BOX 628, ALAMOGORDO, NM 88311-0628
PO BOX 629, ALAMOGORDO, NM 88311-0629
PO BOX 630, ALAMOGORDO, NM 88311-0630
PO BOX 631, ALAMOGORDO, NM 88311-0631
PO BOX 632, ALAMOGORDO, NM 88311-0632
PO BOX 633, ALAMOGORDO, NM 88311-0633
PO BOX 634, ALAMOGORDO, NM 88311-0634
PO BOX 635, ALAMOGORDO, NM 88311-0635
PO BOX 636, ALAMOGORDO, NM 88311-0636
PO BOX 637, ALAMOGORDO, NM 88311-0637
PO BOX 638, ALAMOGORDO, NM 88311-0638
PO BOX 639, ALAMOGORDO, NM 88311-0639
PO BOX 640, ALAMOGORDO, NM 88311-0640
PO BOX 641, ALAMOGORDO, NM 88311-0641
PO BOX 642, ALAMOGORDO, NM 88311-0642
PO BOX 643, ALAMOGORDO, NM 88311-0643
PO BOX 644, ALAMOGORDO, NM 88311-0644
PO BOX 645, ALAMOGORDO, NM 88311-0645
PO BOX 646, ALAMOGORDO, NM 88311-0646
PO BOX 647, ALAMOGORDO, NM 88311-0647
PO BOX 648, ALAMOGORDO, NM 88311-0648
PO BOX 649, ALAMOGORDO, NM 88311-0649
PO BOX 650, ALAMOGORDO, NM 88311-0650
PO BOX 651, ALAMOGORDO, NM 88311-0651
PO BOX 652, ALAMOGORDO, NM 88311-0652
PO BOX 653, ALAMOGORDO, NM 88311-0653
PO BOX 654, ALAMOGORDO, NM 88311-0654
PO BOX 655, ALAMOGORDO, NM 88311-0655
PO BOX 656, ALAMOGORDO, NM 88311-0656
PO BOX 657, ALAMOGORDO, NM 88311-0657
PO BOX 658, ALAMOGORDO, NM 88311-0658
PO BOX 659, ALAMOGORDO, NM 88311-0659
PO BOX 660, ALAMOGORDO, NM 88311-0660
PO BOX 661, ALAMOGORDO, NM 88311-0661
PO BOX 662, ALAMOGORDO, NM 88311-0662
PO BOX 663, ALAMOGORDO, NM 88311-0663
PO BOX 664, ALAMOGORDO, NM 88311-0664
PO BOX 665, ALAMOGORDO, NM 88311-0665
PO BOX 666, ALAMOGORDO, NM 88311-0666
PO BOX 667, ALAMOGORDO, NM 88311-0667
PO BOX 668, ALAMOGORDO, NM 88311-0668
PO BOX 669, ALAMOGORDO, NM 88311-0669
PO BOX 670, ALAMOGORDO, NM 88311-0670
PO BOX 671, ALAMOGORDO, NM 88311-0671
PO BOX 672, ALAMOGORDO, NM 88311-0672
PO BOX 673, ALAMOGORDO, NM 88311-0673
PO BOX 674, ALAMOGORDO, NM 88311-0674
PO BOX 675, ALAMOGORDO, NM 88311-0675
PO BOX 676, ALAMOGORDO, NM 88311-0676
PO BOX 677, ALAMOGORDO, NM 88311-0677
PO BOX 678, ALAMOGORDO, NM 88311-0678
PO BOX 679, ALAMOGORDO, NM 88311-0679
PO BOX 680, ALAMOGORDO, NM 88311-0680
PO BOX 681, ALAMOGORDO, NM 88311-0681
PO BOX 682, ALAMOGORDO, NM 88311-0682
PO BOX 683, ALAMOGORDO, NM 88311-0683
PO BOX 684, ALAMOGORDO, NM 88311-0684
PO BOX 685, ALAMOGORDO, NM 88311-0685
PO BOX 686, ALAMOGORDO, NM 88311-0686
PO BOX 687, ALAMOGORDO, NM 88311-0687
PO BOX 688, ALAMOGORDO, NM 88311-0688
PO BOX 689, ALAMOGORDO, NM 88311-0689
PO BOX 690, ALAMOGORDO, NM 88311-0690
PO BOX 691, ALAMOGORDO, NM 88311-0691
PO BOX 692, ALAMOGORDO, NM 88311-0692
PO BOX 693, ALAMOGORDO, NM 88311-0693
PO BOX 694, ALAMOGORDO, NM 88311-0694
PO BOX 695, ALAMOGORDO, NM 88311-0695
PO BOX 696, ALAMOGORDO, NM 88311-0696
PO BOX 697, ALAMOGORDO, NM 88311-0697
PO BOX 698, ALAMOGORDO, NM 88311-0698
PO BOX 699, ALAMOGORDO, NM 88311-0699
PO BOX 700, ALAMOGORDO, NM 88311-0700
PO BOX 701, ALAMOGORDO, NM 88311-0701
PO BOX 702, ALAMOGORDO, NM 88311-0702
PO BOX 703, ALAMOGORDO, NM 88311-0703
PO BOX 704, ALAMOGORDO, NM 88311-0704
PO BOX 705, ALAMOGORDO, NM 88311-0705
PO BOX 706, ALAMOGORDO, NM 88311-0706
PO BOX 707, ALAMOGORDO, NM 88311-0707
PO BOX 708, ALAMOGORDO, NM 88311-0708
PO BOX 709, ALAMOGORDO, NM 88311-0709
PO BOX 710, ALAMOGORDO, NM 88311-0710
PO BOX 711, ALAMOGORDO, NM 88311-0711
PO BOX 712, ALAMOGORDO, NM 88311-0712
PO BOX 713, ALAMOGORDO, NM 88311-0713
PO BOX 714, ALAMOGORDO, NM 88311-0714
PO BOX 715, ALAMOGORDO, NM 88311-0715
PO BOX 716, ALAMOGORDO, NM 88311-0716
PO BOX 717, ALAMOGORDO, NM 88311-0717
PO BOX 718, ALAMOGORDO, NM 88311-0718
PO BOX 719, ALAMOGORDO, NM 88311-0719
PO BOX 720, ALAMOGORDO, NM 88311-0720
PO BOX 721, ALAMOGORDO, NM 88311-0721
PO BOX 722, ALAMOGORDO, NM 88311-0722
PO BOX 723, ALAMOGORDO, NM 88311-0723
PO BOX 724, ALAMOGORDO, NM 88311-0724
PO BOX 725, ALAMOGORDO, NM 88311-0725
PO BOX 726, ALAMOGORDO, NM 88311-0726
PO BOX 727, ALAMOGORDO, NM 88311-0727
PO BOX 728, ALAMOGORDO, NM 88311-0728
PO BOX 729, ALAMOGORDO, NM 88311-0729
PO BOX 730, ALAMOGORDO, NM 88311-0730
PO BOX 731, ALAMOGORDO, NM 88311-0731
PO BOX 732, ALAMOGORDO, NM 88311-0732
PO BOX 733, ALAMOGORDO, NM 88311-0733
PO BOX 734, ALAMOGORDO, NM 88311-0734
PO BOX 735, ALAMOGORDO, NM 88311-0735
PO BOX 736, ALAMOGORDO, NM 88311-0736
PO BOX 737, ALAMOGORDO, NM 88311-0737
PO BOX 738, ALAMOGORDO, NM 88311-0738
PO BOX 739, ALAMOGORDO, NM 88311-0739
PO BOX 740, ALAMOGORDO, NM 88311-0740
PO BOX 741, ALAMOGORDO, NM 88311-0741
PO BOX 742, ALAMOGORDO, NM 88311-0742
PO BOX 743, ALAMOGORDO, NM 88311-0743
PO BOX 744, ALAMOGORDO, NM 88311-0744
PO BOX 745, ALAMOGORDO, NM 88311-0745
PO BOX 746, ALAMOGORDO, NM 88311-0746
PO BOX 747, ALAMOGORDO, NM 88311-0747
PO BOX 748, ALAMOGORDO, NM 88311-0748
PO BOX 749, ALAMOGORDO, NM 88311-0749
PO BOX 750, ALAMOGORDO, NM 88311-0750
PO BOX 751, ALAMOGORDO, NM 88311-0751
PO BOX 752, ALAMOGORDO, NM 88311-0752
PO BOX 753, ALAMOGORDO, NM 88311-0753
PO BOX 754, ALAMOGORDO, NM 88311-0754
PO BOX 755, ALAMOGORDO, NM 88311-0755
PO BOX 756, ALAMOGORDO, NM 88311-0756
PO BOX 757, ALAMOGORDO, NM 88311-0757
PO BOX 758, ALAMOGORDO, NM 88311-0758
PO BOX 759, ALAMOGORDO, NM 88311-0759
PO BOX 760, ALAMOGORDO, NM 88311-0760
PO BOX 761, ALAMOGORDO, NM 88311-0761
PO BOX 762, ALAMOGORDO, NM 88311-0762
PO BOX 763, ALAMOGORDO, NM 88311-0763
PO BOX 764, ALAMOGORDO, NM 88311-0764
PO BOX 765, ALAMOGORDO, NM 88311-0765
PO BOX 766, ALAMOGORDO, NM 88311-0766
PO BOX 767, ALAMOGORDO, NM 88311-0767
PO BOX 768, ALAMOGORDO, NM 88311-0768
PO BOX 769, ALAMOGORDO, NM 88311-0769
PO BOX 770, ALAMOGORDO, NM 88311-0770
PO BOX 771, ALAMOGORDO, NM 88311-0771
PO BOX 772, ALAMOGORDO, NM 88311-0772
PO BOX 773, ALAMOGORDO, NM 88311-0773
PO BOX 774, ALAMOGORDO, NM 88311-0774
PO BOX 775, ALAMOGORDO, NM 88311-0775
PO BOX 776, ALAMOGORDO, NM 88311-0776
PO BOX 777, ALAMOGORDO, NM 88311-0777
PO BOX 778, ALAMOGORDO, NM 88311-0778
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