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 601, RIDGEFIELD PARK, NJ 07660-0601
PO BOX 602, RIDGEFIELD PARK, NJ 07660-0602
PO BOX 603, RIDGEFIELD PARK, NJ 07660-0603
PO BOX 604, RIDGEFIELD PARK, NJ 07660-0604
PO BOX 605, RIDGEFIELD PARK, NJ 07660-0605
PO BOX 606, RIDGEFIELD PARK, NJ 07660-0606
PO BOX 607, RIDGEFIELD PARK, NJ 07660-0607
PO BOX 608, RIDGEFIELD PARK, NJ 07660-0608
PO BOX 609, RIDGEFIELD PARK, NJ 07660-0609
PO BOX 610, RIDGEFIELD PARK, NJ 07660-0610
PO BOX 611, RIDGEFIELD PARK, NJ 07660-0611
PO BOX 612, RIDGEFIELD PARK, NJ 07660-0612
PO BOX 613, RIDGEFIELD PARK, NJ 07660-0613
PO BOX 614, RIDGEFIELD PARK, NJ 07660-0614
PO BOX 615, RIDGEFIELD PARK, NJ 07660-0615
PO BOX 616, RIDGEFIELD PARK, NJ 07660-0616
PO BOX 617, RIDGEFIELD PARK, NJ 07660-0617
PO BOX 618, RIDGEFIELD PARK, NJ 07660-0618
PO BOX 619, RIDGEFIELD PARK, NJ 07660-0619
PO BOX 620, RIDGEFIELD PARK, NJ 07660-0620
PO BOX 621, RIDGEFIELD PARK, NJ 07660-0621
PO BOX 622, RIDGEFIELD PARK, NJ 07660-0622
PO BOX 623, RIDGEFIELD PARK, NJ 07660-0623
PO BOX 624, RIDGEFIELD PARK, NJ 07660-0624
PO BOX 625, RIDGEFIELD PARK, NJ 07660-0625
PO BOX 626, RIDGEFIELD PARK, NJ 07660-0626
PO BOX 627, RIDGEFIELD PARK, NJ 07660-0627
PO BOX 628, RIDGEFIELD PARK, NJ 07660-0628
PO BOX 629, RIDGEFIELD PARK, NJ 07660-0629
PO BOX 630, RIDGEFIELD PARK, NJ 07660-0630
PO BOX 631, RIDGEFIELD PARK, NJ 07660-0631
PO BOX 632, RIDGEFIELD PARK, NJ 07660-0632
PO BOX 633, RIDGEFIELD PARK, NJ 07660-0633
PO BOX 634, RIDGEFIELD PARK, NJ 07660-0634
PO BOX 635, RIDGEFIELD PARK, NJ 07660-0635
PO BOX 636, RIDGEFIELD PARK, NJ 07660-0636
PO BOX 637, RIDGEFIELD PARK, NJ 07660-0637
PO BOX 638, RIDGEFIELD PARK, NJ 07660-0638
PO BOX 639, RIDGEFIELD PARK, NJ 07660-0639
PO BOX 640, RIDGEFIELD PARK, NJ 07660-0640
PO BOX 641, RIDGEFIELD PARK, NJ 07660-0641
PO BOX 642, RIDGEFIELD PARK, NJ 07660-0642
PO BOX 643, RIDGEFIELD PARK, NJ 07660-0643
PO BOX 644, RIDGEFIELD PARK, NJ 07660-0644
PO BOX 645, RIDGEFIELD PARK, NJ 07660-0645
PO BOX 646, RIDGEFIELD PARK, NJ 07660-0646
PO BOX 647, RIDGEFIELD PARK, NJ 07660-0647
PO BOX 648, RIDGEFIELD PARK, NJ 07660-0648
PO BOX 649, RIDGEFIELD PARK, NJ 07660-0649
PO BOX 650, RIDGEFIELD PARK, NJ 07660-0650
PO BOX 651, RIDGEFIELD PARK, NJ 07660-0651
PO BOX 652, RIDGEFIELD PARK, NJ 07660-0652
PO BOX 653, RIDGEFIELD PARK, NJ 07660-0653
PO BOX 654, RIDGEFIELD PARK, NJ 07660-0654
PO BOX 655, RIDGEFIELD PARK, NJ 07660-0655
PO BOX 656, RIDGEFIELD PARK, NJ 07660-0656
PO BOX 657, RIDGEFIELD PARK, NJ 07660-0657
PO BOX 658, RIDGEFIELD PARK, NJ 07660-0658
PO BOX 659, RIDGEFIELD PARK, NJ 07660-0659
PO BOX 660, RIDGEFIELD PARK, NJ 07660-0660
PO BOX 661, RIDGEFIELD PARK, NJ 07660-0661
PO BOX 662, RIDGEFIELD PARK, NJ 07660-0662
PO BOX 663, RIDGEFIELD PARK, NJ 07660-0663
PO BOX 664, RIDGEFIELD PARK, NJ 07660-0664
PO BOX 665, RIDGEFIELD PARK, NJ 07660-0665
PO BOX 666, RIDGEFIELD PARK, NJ 07660-0666
PO BOX 667, RIDGEFIELD PARK, NJ 07660-0667
PO BOX 668, RIDGEFIELD PARK, NJ 07660-0668
PO BOX 669, RIDGEFIELD PARK, NJ 07660-0669
PO BOX 670, RIDGEFIELD PARK, NJ 07660-0670
PO BOX 671, RIDGEFIELD PARK, NJ 07660-0671
PO BOX 672, RIDGEFIELD PARK, NJ 07660-0672
PO BOX 673, RIDGEFIELD PARK, NJ 07660-0673
PO BOX 674, RIDGEFIELD PARK, NJ 07660-0674
PO BOX 675, RIDGEFIELD PARK, NJ 07660-0675
PO BOX 676, RIDGEFIELD PARK, NJ 07660-0676
PO BOX 677, RIDGEFIELD PARK, NJ 07660-0677
PO BOX 678, RIDGEFIELD PARK, NJ 07660-0678
PO BOX 679, RIDGEFIELD PARK, NJ 07660-0679
PO BOX 680, RIDGEFIELD PARK, NJ 07660-0680
PO BOX 681, RIDGEFIELD PARK, NJ 07660-0681
PO BOX 682, RIDGEFIELD PARK, NJ 07660-0682
PO BOX 683, RIDGEFIELD PARK, NJ 07660-0683
PO BOX 684, RIDGEFIELD PARK, NJ 07660-0684
PO BOX 685, RIDGEFIELD PARK, NJ 07660-0685
PO BOX 686, RIDGEFIELD PARK, NJ 07660-0686
PO BOX 687, RIDGEFIELD PARK, NJ 07660-0687
PO BOX 688, RIDGEFIELD PARK, NJ 07660-0688
PO BOX 689, RIDGEFIELD PARK, NJ 07660-0689
PO BOX 690, RIDGEFIELD PARK, NJ 07660-0690
PO BOX 691, RIDGEFIELD PARK, NJ 07660-0691
PO BOX 692, RIDGEFIELD PARK, NJ 07660-0692
PO BOX 693, RIDGEFIELD PARK, NJ 07660-0693
PO BOX 694, RIDGEFIELD PARK, NJ 07660-0694
PO BOX 695, RIDGEFIELD PARK, NJ 07660-0695
PO BOX 696, RIDGEFIELD PARK, NJ 07660-0696
PO BOX 697, RIDGEFIELD PARK, NJ 07660-0697
PO BOX 698, RIDGEFIELD PARK, NJ 07660-0698
PO BOX 699, RIDGEFIELD PARK, NJ 07660-0699
PO BOX 700, RIDGEFIELD PARK, NJ 07660-0700
PO BOX 701, RIDGEFIELD PARK, NJ 07660-0701
PO BOX 702, RIDGEFIELD PARK, NJ 07660-0702
PO BOX 703, RIDGEFIELD PARK, NJ 07660-0703
PO BOX 704, RIDGEFIELD PARK, NJ 07660-0704
PO BOX 705, RIDGEFIELD PARK, NJ 07660-0705
PO BOX 706, RIDGEFIELD PARK, NJ 07660-0706
PO BOX 707, RIDGEFIELD PARK, NJ 07660-0707
PO BOX 708, RIDGEFIELD PARK, NJ 07660-0708
PO BOX 709, RIDGEFIELD PARK, NJ 07660-0709
PO BOX 710, RIDGEFIELD PARK, NJ 07660-0710
PO BOX 711, RIDGEFIELD PARK, NJ 07660-0711
PO BOX 712, RIDGEFIELD PARK, NJ 07660-0712
PO BOX 713, RIDGEFIELD PARK, NJ 07660-0713
PO BOX 714, RIDGEFIELD PARK, NJ 07660-0714
PO BOX 715, RIDGEFIELD PARK, NJ 07660-0715
PO BOX 716, RIDGEFIELD PARK, NJ 07660-0716
PO BOX 717, RIDGEFIELD PARK, NJ 07660-0717
PO BOX 718, RIDGEFIELD PARK, NJ 07660-0718
PO BOX 719, RIDGEFIELD PARK, NJ 07660-0719
PO BOX 720, RIDGEFIELD PARK, NJ 07660-0720
PO BOX 721, RIDGEFIELD PARK, NJ 07660-0721
PO BOX 722, RIDGEFIELD PARK, NJ 07660-0722
PO BOX 723, RIDGEFIELD PARK, NJ 07660-0723
PO BOX 724, RIDGEFIELD PARK, NJ 07660-0724
PO BOX 725, RIDGEFIELD PARK, NJ 07660-0725
PO BOX 726, RIDGEFIELD PARK, NJ 07660-0726
PO BOX 727, RIDGEFIELD PARK, NJ 07660-0727
PO BOX 728, RIDGEFIELD PARK, NJ 07660-0728
PO BOX 729, RIDGEFIELD PARK, NJ 07660-0729
PO BOX 730, RIDGEFIELD PARK, NJ 07660-0730
PO BOX 731, RIDGEFIELD PARK, NJ 07660-0731
PO BOX 732, RIDGEFIELD PARK, NJ 07660-0732
PO BOX 733, RIDGEFIELD PARK, NJ 07660-0733
PO BOX 734, RIDGEFIELD PARK, NJ 07660-0734
PO BOX 735, RIDGEFIELD PARK, NJ 07660-0735
PO BOX 736, RIDGEFIELD PARK, NJ 07660-0736
PO BOX 737, RIDGEFIELD PARK, NJ 07660-0737
PO BOX 738, RIDGEFIELD PARK, NJ 07660-0738
PO BOX 739, RIDGEFIELD PARK, NJ 07660-0739
PO BOX 740, RIDGEFIELD PARK, NJ 07660-0740
PO BOX 741, RIDGEFIELD PARK, NJ 07660-0741
PO BOX 742, RIDGEFIELD PARK, NJ 07660-0742
PO BOX 743, RIDGEFIELD PARK, NJ 07660-0743
PO BOX 744, RIDGEFIELD PARK, NJ 07660-0744
PO BOX 745, RIDGEFIELD PARK, NJ 07660-0745
PO BOX 746, RIDGEFIELD PARK, NJ 07660-0746
PO BOX 747, RIDGEFIELD PARK, NJ 07660-0747
PO BOX 748, RIDGEFIELD PARK, NJ 07660-0748
PO BOX 749, RIDGEFIELD PARK, NJ 07660-0749
PO BOX 750, RIDGEFIELD PARK, NJ 07660-0750
PO BOX 751, RIDGEFIELD PARK, NJ 07660-0751
PO BOX 752, RIDGEFIELD PARK, NJ 07660-0752
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