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 631, BERKELEY HEIGHTS, NJ 07922-0631
PO BOX 632, BERKELEY HEIGHTS, NJ 07922-0632
PO BOX 633, BERKELEY HEIGHTS, NJ 07922-0633
PO BOX 634, BERKELEY HEIGHTS, NJ 07922-0634
PO BOX 635, BERKELEY HEIGHTS, NJ 07922-0635
PO BOX 636, BERKELEY HEIGHTS, NJ 07922-0636
PO BOX 637, BERKELEY HEIGHTS, NJ 07922-0637
PO BOX 638, BERKELEY HEIGHTS, NJ 07922-0638
PO BOX 639, BERKELEY HEIGHTS, NJ 07922-0639
PO BOX 640, BERKELEY HEIGHTS, NJ 07922-0640
PO BOX 641, BERKELEY HEIGHTS, NJ 07922-0641
PO BOX 642, BERKELEY HEIGHTS, NJ 07922-0642
PO BOX 643, BERKELEY HEIGHTS, NJ 07922-0643
PO BOX 644, BERKELEY HEIGHTS, NJ 07922-0644
PO BOX 645, BERKELEY HEIGHTS, NJ 07922-0645
PO BOX 646, BERKELEY HEIGHTS, NJ 07922-0646
PO BOX 647, BERKELEY HEIGHTS, NJ 07922-0647
PO BOX 648, BERKELEY HEIGHTS, NJ 07922-0648
PO BOX 649, BERKELEY HEIGHTS, NJ 07922-0649
PO BOX 650, BERKELEY HEIGHTS, NJ 07922-0650
PO BOX 651, BERKELEY HEIGHTS, NJ 07922-0651
PO BOX 652, BERKELEY HEIGHTS, NJ 07922-0652
PO BOX 653, BERKELEY HEIGHTS, NJ 07922-0653
PO BOX 654, BERKELEY HEIGHTS, NJ 07922-0654
PO BOX 655, BERKELEY HEIGHTS, NJ 07922-0655
PO BOX 656, BERKELEY HEIGHTS, NJ 07922-0656
PO BOX 657, BERKELEY HEIGHTS, NJ 07922-0657
PO BOX 658, BERKELEY HEIGHTS, NJ 07922-0658
PO BOX 659, BERKELEY HEIGHTS, NJ 07922-0659
PO BOX 660, BERKELEY HEIGHTS, NJ 07922-0660
PO BOX 661, BERKELEY HEIGHTS, NJ 07922-0661
PO BOX 662, BERKELEY HEIGHTS, NJ 07922-0662
PO BOX 663, BERKELEY HEIGHTS, NJ 07922-0663
PO BOX 664, BERKELEY HEIGHTS, NJ 07922-0664
PO BOX 665, BERKELEY HEIGHTS, NJ 07922-0665
PO BOX 666, BERKELEY HEIGHTS, NJ 07922-0666
PO BOX 667, BERKELEY HEIGHTS, NJ 07922-0667
PO BOX 668, BERKELEY HEIGHTS, NJ 07922-0668
PO BOX 669, BERKELEY HEIGHTS, NJ 07922-0669
PO BOX 670, BERKELEY HEIGHTS, NJ 07922-0670
PO BOX 671, BERKELEY HEIGHTS, NJ 07922-0671
PO BOX 672, BERKELEY HEIGHTS, NJ 07922-0672
PO BOX 673, BERKELEY HEIGHTS, NJ 07922-0673
PO BOX 674, BERKELEY HEIGHTS, NJ 07922-0674
PO BOX 675, BERKELEY HEIGHTS, NJ 07922-0675
PO BOX 676, BERKELEY HEIGHTS, NJ 07922-0676
PO BOX 677, BERKELEY HEIGHTS, NJ 07922-0677
PO BOX 678, BERKELEY HEIGHTS, NJ 07922-0678
PO BOX 679, BERKELEY HEIGHTS, NJ 07922-0679
PO BOX 680, BERKELEY HEIGHTS, NJ 07922-0680
PO BOX 681, BERKELEY HEIGHTS, NJ 07922-0681
PO BOX 682, BERKELEY HEIGHTS, NJ 07922-0682
PO BOX 683, BERKELEY HEIGHTS, NJ 07922-0683
PO BOX 684, BERKELEY HEIGHTS, NJ 07922-0684
PO BOX 685, BERKELEY HEIGHTS, NJ 07922-0685
PO BOX 686, BERKELEY HEIGHTS, NJ 07922-0686
PO BOX 687, BERKELEY HEIGHTS, NJ 07922-0687
PO BOX 688, BERKELEY HEIGHTS, NJ 07922-0688
PO BOX 689, BERKELEY HEIGHTS, NJ 07922-0689
PO BOX 690, BERKELEY HEIGHTS, NJ 07922-0690
PO BOX 691, BERKELEY HEIGHTS, NJ 07922-0691
PO BOX 692, BERKELEY HEIGHTS, NJ 07922-0692
PO BOX 693, BERKELEY HEIGHTS, NJ 07922-0693
PO BOX 694, BERKELEY HEIGHTS, NJ 07922-0694
PO BOX 695, BERKELEY HEIGHTS, NJ 07922-0695
PO BOX 696, BERKELEY HEIGHTS, NJ 07922-0696
PO BOX 697, BERKELEY HEIGHTS, NJ 07922-0697
PO BOX 698, BERKELEY HEIGHTS, NJ 07922-0698
PO BOX 699, BERKELEY HEIGHTS, NJ 07922-0699
PO BOX 700, BERKELEY HEIGHTS, NJ 07922-0700
PO BOX 701, BERKELEY HEIGHTS, NJ 07922-0701
PO BOX 702, BERKELEY HEIGHTS, NJ 07922-0702
PO BOX 703, BERKELEY HEIGHTS, NJ 07922-0703
PO BOX 704, BERKELEY HEIGHTS, NJ 07922-0704
PO BOX 705, BERKELEY HEIGHTS, NJ 07922-0705
PO BOX 706, BERKELEY HEIGHTS, NJ 07922-0706
PO BOX 707, BERKELEY HEIGHTS, NJ 07922-0707
PO BOX 708, BERKELEY HEIGHTS, NJ 07922-0708
PO BOX 709, BERKELEY HEIGHTS, NJ 07922-0709
PO BOX 710, BERKELEY HEIGHTS, NJ 07922-0710
PO BOX 711, BERKELEY HEIGHTS, NJ 07922-0711
PO BOX 712, BERKELEY HEIGHTS, NJ 07922-0712
PO BOX 713, BERKELEY HEIGHTS, NJ 07922-0713
PO BOX 714, BERKELEY HEIGHTS, NJ 07922-0714
PO BOX 715, BERKELEY HEIGHTS, NJ 07922-0715
PO BOX 716, BERKELEY HEIGHTS, NJ 07922-0716
PO BOX 717, BERKELEY HEIGHTS, NJ 07922-0717
PO BOX 718, BERKELEY HEIGHTS, NJ 07922-0718
PO BOX 719, BERKELEY HEIGHTS, NJ 07922-0719
PO BOX 720, BERKELEY HEIGHTS, NJ 07922-0720
PO BOX 721, BERKELEY HEIGHTS, NJ 07922-0721
PO BOX 722, BERKELEY HEIGHTS, NJ 07922-0722
PO BOX 723, BERKELEY HEIGHTS, NJ 07922-0723
PO BOX 724, BERKELEY HEIGHTS, NJ 07922-0724
PO BOX 725, BERKELEY HEIGHTS, NJ 07922-0725
PO BOX 726, BERKELEY HEIGHTS, NJ 07922-0726
PO BOX 727, BERKELEY HEIGHTS, NJ 07922-0727
PO BOX 728, BERKELEY HEIGHTS, NJ 07922-0728
PO BOX 729, BERKELEY HEIGHTS, NJ 07922-0729
PO BOX 730, BERKELEY HEIGHTS, NJ 07922-0730
PO BOX 731, BERKELEY HEIGHTS, NJ 07922-0731
PO BOX 732, BERKELEY HEIGHTS, NJ 07922-0732
PO BOX 733, BERKELEY HEIGHTS, NJ 07922-0733
PO BOX 734, BERKELEY HEIGHTS, NJ 07922-0734
PO BOX 735, BERKELEY HEIGHTS, NJ 07922-0735
PO BOX 736, BERKELEY HEIGHTS, NJ 07922-0736
PO BOX 737, BERKELEY HEIGHTS, NJ 07922-0737
PO BOX 738, BERKELEY HEIGHTS, NJ 07922-0738
PO BOX 739, BERKELEY HEIGHTS, NJ 07922-0739
PO BOX 740, BERKELEY HEIGHTS, NJ 07922-0740
PO BOX 741, BERKELEY HEIGHTS, NJ 07922-0741
PO BOX 742, BERKELEY HEIGHTS, NJ 07922-0742
PO BOX 743, BERKELEY HEIGHTS, NJ 07922-0743
PO BOX 744, BERKELEY HEIGHTS, NJ 07922-0744
PO BOX 745, BERKELEY HEIGHTS, NJ 07922-0745
PO BOX 746, BERKELEY HEIGHTS, NJ 07922-0746
PO BOX 747, BERKELEY HEIGHTS, NJ 07922-0747
PO BOX 748, BERKELEY HEIGHTS, NJ 07922-0748
PO BOX 749, BERKELEY HEIGHTS, NJ 07922-0749
PO BOX 750, BERKELEY HEIGHTS, NJ 07922-0750
PO BOX 751, BERKELEY HEIGHTS, NJ 07922-0751
PO BOX 752, BERKELEY HEIGHTS, NJ 07922-0752
PO BOX 753, BERKELEY HEIGHTS, NJ 07922-0753
PO BOX 754, BERKELEY HEIGHTS, NJ 07922-0754
PO BOX 755, BERKELEY HEIGHTS, NJ 07922-0755
PO BOX 756, BERKELEY HEIGHTS, NJ 07922-0756
PO BOX 757, BERKELEY HEIGHTS, NJ 07922-0757
PO BOX 758, BERKELEY HEIGHTS, NJ 07922-0758
PO BOX 759, BERKELEY HEIGHTS, NJ 07922-0759
PO BOX 760, BERKELEY HEIGHTS, NJ 07922-0760
PO BOX 761, BERKELEY HEIGHTS, NJ 07922-0761
PO BOX 762, BERKELEY HEIGHTS, NJ 07922-0762
PO BOX 763, BERKELEY HEIGHTS, NJ 07922-0763
PO BOX 764, BERKELEY HEIGHTS, NJ 07922-0764
PO BOX 765, BERKELEY HEIGHTS, NJ 07922-0765
PO BOX 766, BERKELEY HEIGHTS, NJ 07922-0766
PO BOX 767, BERKELEY HEIGHTS, NJ 07922-0767
PO BOX 768, BERKELEY HEIGHTS, NJ 07922-0768
PO BOX 769, BERKELEY HEIGHTS, NJ 07922-0769
PO BOX 770, BERKELEY HEIGHTS, NJ 07922-0770
PO BOX 771, BERKELEY HEIGHTS, NJ 07922-0771
PO BOX 772, BERKELEY HEIGHTS, NJ 07922-0772
PO BOX 773, BERKELEY HEIGHTS, NJ 07922-0773
PO BOX 774, BERKELEY HEIGHTS, NJ 07922-0774
PO BOX 775, BERKELEY HEIGHTS, NJ 07922-0775
PO BOX 776, BERKELEY HEIGHTS, NJ 07922-0776
PO BOX 777, BERKELEY HEIGHTS, NJ 07922-0777
PO BOX 778, BERKELEY HEIGHTS, NJ 07922-0778
PO BOX 779, BERKELEY HEIGHTS, NJ 07922-0779
PO BOX 780, BERKELEY HEIGHTS, NJ 07922-0780
PO BOX 781, BERKELEY HEIGHTS, NJ 07922-0781
PO BOX 782, BERKELEY HEIGHTS, NJ 07922-0782
PO BOX 783, BERKELEY HEIGHTS, NJ 07922-0783
PO BOX 784, BERKELEY HEIGHTS, NJ 07922-0784
PO BOX 785, BERKELEY HEIGHTS, NJ 07922-0785
PO BOX 786, BERKELEY HEIGHTS, NJ 07922-0786
PO BOX 787, BERKELEY HEIGHTS, NJ 07922-0787
PO BOX 788, BERKELEY HEIGHTS, NJ 07922-0788
PO BOX 789, BERKELEY HEIGHTS, NJ 07922-0789
PO BOX 790, BERKELEY HEIGHTS, NJ 07922-0790
PO BOX 791, BERKELEY HEIGHTS, NJ 07922-0791
PO BOX 792, BERKELEY HEIGHTS, NJ 07922-0792
PO BOX 793, BERKELEY HEIGHTS, NJ 07922-0793
PO BOX 794, BERKELEY HEIGHTS, NJ 07922-0794
PO BOX 795, BERKELEY HEIGHTS, NJ 07922-0795
PO BOX 796, BERKELEY HEIGHTS, NJ 07922-0796
PO BOX 797, BERKELEY HEIGHTS, NJ 07922-0797
PO BOX 798, BERKELEY HEIGHTS, NJ 07922-0798
PO BOX 799, BERKELEY HEIGHTS, NJ 07922-0799
PO BOX 800, BERKELEY HEIGHTS, NJ 07922-0800
PO BOX 801, BERKELEY HEIGHTS, NJ 07922-0801
PO BOX 802, BERKELEY HEIGHTS, NJ 07922-0802
PO BOX 803, BERKELEY HEIGHTS, NJ 07922-0803
PO BOX 804, BERKELEY HEIGHTS, NJ 07922-0804
PO BOX 805, BERKELEY HEIGHTS, NJ 07922-0805
PO BOX 806, BERKELEY HEIGHTS, NJ 07922-0806
PO BOX 807, BERKELEY HEIGHTS, NJ 07922-0807
PO BOX 808, BERKELEY HEIGHTS, NJ 07922-0808
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