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 661, OCEANSIDE, CA 92049-0661
PO BOX 662, OCEANSIDE, CA 92049-0662
PO BOX 663, OCEANSIDE, CA 92049-0663
PO BOX 664, OCEANSIDE, CA 92049-0664
PO BOX 665, OCEANSIDE, CA 92049-0665
PO BOX 666, OCEANSIDE, CA 92049-0666
PO BOX 667, OCEANSIDE, CA 92049-0667
PO BOX 668, OCEANSIDE, CA 92049-0668
PO BOX 669, OCEANSIDE, CA 92049-0669
PO BOX 670, OCEANSIDE, CA 92049-0670
PO BOX 671, OCEANSIDE, CA 92049-0671
PO BOX 672, OCEANSIDE, CA 92049-0672
PO BOX 673, OCEANSIDE, CA 92049-0673
PO BOX 674, OCEANSIDE, CA 92049-0674
PO BOX 675, OCEANSIDE, CA 92049-0675
PO BOX 676, OCEANSIDE, CA 92049-0676
PO BOX 677, OCEANSIDE, CA 92049-0677
PO BOX 678, OCEANSIDE, CA 92049-0678
PO BOX 679, OCEANSIDE, CA 92049-0679
PO BOX 680, OCEANSIDE, CA 92049-0680
PO BOX 681, OCEANSIDE, CA 92049-0681
PO BOX 682, OCEANSIDE, CA 92049-0682
PO BOX 683, OCEANSIDE, CA 92049-0683
PO BOX 684, OCEANSIDE, CA 92049-0684
PO BOX 685, OCEANSIDE, CA 92049-0685
PO BOX 686, OCEANSIDE, CA 92049-0686
PO BOX 687, OCEANSIDE, CA 92049-0687
PO BOX 688, OCEANSIDE, CA 92049-0688
PO BOX 689, OCEANSIDE, CA 92049-0689
PO BOX 690, OCEANSIDE, CA 92049-0690
PO BOX 691, OCEANSIDE, CA 92049-0691
PO BOX 692, OCEANSIDE, CA 92049-0692
PO BOX 693, OCEANSIDE, CA 92049-0693
PO BOX 694, OCEANSIDE, CA 92049-0694
PO BOX 695, OCEANSIDE, CA 92049-0695
PO BOX 696, OCEANSIDE, CA 92049-0696
PO BOX 697, OCEANSIDE, CA 92049-0697
PO BOX 698, OCEANSIDE, CA 92049-0698
PO BOX 699, OCEANSIDE, CA 92049-0699
PO BOX 700, OCEANSIDE, CA 92049-0700
PO BOX 701, OCEANSIDE, CA 92049-0701
PO BOX 702, OCEANSIDE, CA 92049-0702
PO BOX 703, OCEANSIDE, CA 92049-0703
PO BOX 704, OCEANSIDE, CA 92049-0704
PO BOX 705, OCEANSIDE, CA 92049-0705
PO BOX 706, OCEANSIDE, CA 92049-0706
PO BOX 707, OCEANSIDE, CA 92049-0707
PO BOX 708, OCEANSIDE, CA 92049-0708
PO BOX 709, OCEANSIDE, CA 92049-0709
PO BOX 710, OCEANSIDE, CA 92049-0710
PO BOX 711, OCEANSIDE, CA 92049-0711
PO BOX 712, OCEANSIDE, CA 92049-0712
PO BOX 713, OCEANSIDE, CA 92049-0713
PO BOX 714, OCEANSIDE, CA 92049-0714
PO BOX 715, OCEANSIDE, CA 92049-0715
PO BOX 716, OCEANSIDE, CA 92049-0716
PO BOX 717, OCEANSIDE, CA 92049-0717
PO BOX 718, OCEANSIDE, CA 92049-0718
PO BOX 719, OCEANSIDE, CA 92049-0719
PO BOX 720, OCEANSIDE, CA 92049-0720
PO BOX 721, OCEANSIDE, CA 92049-0721
PO BOX 722, OCEANSIDE, CA 92049-0722
PO BOX 723, OCEANSIDE, CA 92049-0723
PO BOX 724, OCEANSIDE, CA 92049-0724
PO BOX 725, OCEANSIDE, CA 92049-0725
PO BOX 726, OCEANSIDE, CA 92049-0726
PO BOX 727, OCEANSIDE, CA 92049-0727
PO BOX 728, OCEANSIDE, CA 92049-0728
PO BOX 729, OCEANSIDE, CA 92049-0729
PO BOX 730, OCEANSIDE, CA 92049-0730
PO BOX 731, OCEANSIDE, CA 92049-0731
PO BOX 732, OCEANSIDE, CA 92049-0732
PO BOX 733, OCEANSIDE, CA 92049-0733
PO BOX 734, OCEANSIDE, CA 92049-0734
PO BOX 735, OCEANSIDE, CA 92049-0735
PO BOX 736, OCEANSIDE, CA 92049-0736
PO BOX 737, OCEANSIDE, CA 92049-0737
PO BOX 738, OCEANSIDE, CA 92049-0738
PO BOX 739, OCEANSIDE, CA 92049-0739
PO BOX 740, OCEANSIDE, CA 92049-0740
PO BOX 741, OCEANSIDE, CA 92049-0741
PO BOX 742, OCEANSIDE, CA 92049-0742
PO BOX 743, OCEANSIDE, CA 92049-0743
PO BOX 744, OCEANSIDE, CA 92049-0744
PO BOX 745, OCEANSIDE, CA 92049-0745
PO BOX 746, OCEANSIDE, CA 92049-0746
PO BOX 747, OCEANSIDE, CA 92049-0747
PO BOX 748, OCEANSIDE, CA 92049-0748
PO BOX 749, OCEANSIDE, CA 92049-0749
PO BOX 750, OCEANSIDE, CA 92049-0750
PO BOX 751, OCEANSIDE, CA 92049-0751
PO BOX 752, OCEANSIDE, CA 92049-0752
PO BOX 753, OCEANSIDE, CA 92049-0753
PO BOX 754, OCEANSIDE, CA 92049-0754
PO BOX 755, OCEANSIDE, CA 92049-0755
PO BOX 756, OCEANSIDE, CA 92049-0756
PO BOX 757, OCEANSIDE, CA 92049-0757
PO BOX 758, OCEANSIDE, CA 92049-0758
PO BOX 759, OCEANSIDE, CA 92049-0759
PO BOX 760, OCEANSIDE, CA 92049-0760
PO BOX 761, OCEANSIDE, CA 92049-0761
PO BOX 762, OCEANSIDE, CA 92049-0762
PO BOX 763, OCEANSIDE, CA 92049-0763
PO BOX 764, OCEANSIDE, CA 92049-0764
PO BOX 765, OCEANSIDE, CA 92049-0765
PO BOX 766, OCEANSIDE, CA 92049-0766
PO BOX 767, OCEANSIDE, CA 92049-0767
PO BOX 768, OCEANSIDE, CA 92049-0768
PO BOX 769, OCEANSIDE, CA 92049-0769
PO BOX 770, OCEANSIDE, CA 92049-0770
PO BOX 771, OCEANSIDE, CA 92049-0771
PO BOX 772, OCEANSIDE, CA 92049-0772
PO BOX 773, OCEANSIDE, CA 92049-0773
PO BOX 774, OCEANSIDE, CA 92049-0774
PO BOX 775, OCEANSIDE, CA 92049-0775
PO BOX 776, OCEANSIDE, CA 92049-0776
PO BOX 777, OCEANSIDE, CA 92049-0777
PO BOX 778, OCEANSIDE, CA 92049-0778
PO BOX 779, OCEANSIDE, CA 92049-0779
PO BOX 780, OCEANSIDE, CA 92049-0780
PO BOX 781, OCEANSIDE, CA 92049-0781
PO BOX 782, OCEANSIDE, CA 92049-0782
PO BOX 783, OCEANSIDE, CA 92049-0783
PO BOX 784, OCEANSIDE, CA 92049-0784
PO BOX 785, OCEANSIDE, CA 92049-0785
PO BOX 786, OCEANSIDE, CA 92049-0786
PO BOX 787, OCEANSIDE, CA 92049-0787
PO BOX 788, OCEANSIDE, CA 92049-0788
PO BOX 789, OCEANSIDE, CA 92049-0789
PO BOX 790, OCEANSIDE, CA 92049-0790
PO BOX 791, OCEANSIDE, CA 92049-0791
PO BOX 792, OCEANSIDE, CA 92049-0792
PO BOX 793, OCEANSIDE, CA 92049-0793
PO BOX 794, OCEANSIDE, CA 92049-0794
PO BOX 795, OCEANSIDE, CA 92049-0795
PO BOX 796, OCEANSIDE, CA 92049-0796
PO BOX 797, OCEANSIDE, CA 92049-0797
PO BOX 798, OCEANSIDE, CA 92049-0798
PO BOX 799, OCEANSIDE, CA 92049-0799
PO BOX 800, OCEANSIDE, CA 92049-0800
PO BOX 801, OCEANSIDE, CA 92049-0801
PO BOX 802, OCEANSIDE, CA 92049-0802
PO BOX 803, OCEANSIDE, CA 92049-0803
PO BOX 804, OCEANSIDE, CA 92049-0804
PO BOX 805, OCEANSIDE, CA 92049-0805
PO BOX 806, OCEANSIDE, CA 92049-0806
PO BOX 807, OCEANSIDE, CA 92049-0807
PO BOX 808, OCEANSIDE, CA 92049-0808
PO BOX 809, OCEANSIDE, CA 92049-0809
PO BOX 810, OCEANSIDE, CA 92049-0810
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