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 681, LAKE PROVIDENCE, LA 71254-0681
PO BOX 682, LAKE PROVIDENCE, LA 71254-0682
PO BOX 683, LAKE PROVIDENCE, LA 71254-0683
PO BOX 684, LAKE PROVIDENCE, LA 71254-0684
PO BOX 685, LAKE PROVIDENCE, LA 71254-0685
PO BOX 686, LAKE PROVIDENCE, LA 71254-0686
PO BOX 687, LAKE PROVIDENCE, LA 71254-0687
PO BOX 688, LAKE PROVIDENCE, LA 71254-0688
PO BOX 689, LAKE PROVIDENCE, LA 71254-0689
PO BOX 690, LAKE PROVIDENCE, LA 71254-0690
PO BOX 691, LAKE PROVIDENCE, LA 71254-0691
PO BOX 692, LAKE PROVIDENCE, LA 71254-0692
PO BOX 693, LAKE PROVIDENCE, LA 71254-0693
PO BOX 694, LAKE PROVIDENCE, LA 71254-0694
PO BOX 695, LAKE PROVIDENCE, LA 71254-0695
PO BOX 696, LAKE PROVIDENCE, LA 71254-0696
PO BOX 697, LAKE PROVIDENCE, LA 71254-0697
PO BOX 698, LAKE PROVIDENCE, LA 71254-0698
PO BOX 699, LAKE PROVIDENCE, LA 71254-0699
PO BOX 700, LAKE PROVIDENCE, LA 71254-0700
PO BOX 701, LAKE PROVIDENCE, LA 71254-0701
PO BOX 702, LAKE PROVIDENCE, LA 71254-0702
PO BOX 703, LAKE PROVIDENCE, LA 71254-0703
PO BOX 704, LAKE PROVIDENCE, LA 71254-0704
PO BOX 705, LAKE PROVIDENCE, LA 71254-0705
PO BOX 706, LAKE PROVIDENCE, LA 71254-0706
PO BOX 707, LAKE PROVIDENCE, LA 71254-0707
PO BOX 708, LAKE PROVIDENCE, LA 71254-0708
PO BOX 709, LAKE PROVIDENCE, LA 71254-0709
PO BOX 710, LAKE PROVIDENCE, LA 71254-0710
PO BOX 711, LAKE PROVIDENCE, LA 71254-0711
PO BOX 712, LAKE PROVIDENCE, LA 71254-0712
PO BOX 713, LAKE PROVIDENCE, LA 71254-0713
PO BOX 714, LAKE PROVIDENCE, LA 71254-0714
PO BOX 715, LAKE PROVIDENCE, LA 71254-0715
PO BOX 716, LAKE PROVIDENCE, LA 71254-0716
PO BOX 717, LAKE PROVIDENCE, LA 71254-0717
PO BOX 718, LAKE PROVIDENCE, LA 71254-0718
PO BOX 719, LAKE PROVIDENCE, LA 71254-0719
PO BOX 720, LAKE PROVIDENCE, LA 71254-0720
PO BOX 721, LAKE PROVIDENCE, LA 71254-0721
PO BOX 722, LAKE PROVIDENCE, LA 71254-0722
PO BOX 723, LAKE PROVIDENCE, LA 71254-0723
PO BOX 724, LAKE PROVIDENCE, LA 71254-0724
PO BOX 725, LAKE PROVIDENCE, LA 71254-0725
PO BOX 726, LAKE PROVIDENCE, LA 71254-0726
PO BOX 727, LAKE PROVIDENCE, LA 71254-0727
PO BOX 728, LAKE PROVIDENCE, LA 71254-0728
PO BOX 729, LAKE PROVIDENCE, LA 71254-0729
PO BOX 730, LAKE PROVIDENCE, LA 71254-0730
PO BOX 731, LAKE PROVIDENCE, LA 71254-0731
PO BOX 732, LAKE PROVIDENCE, LA 71254-0732
PO BOX 733, LAKE PROVIDENCE, LA 71254-0733
PO BOX 734, LAKE PROVIDENCE, LA 71254-0734
PO BOX 735, LAKE PROVIDENCE, LA 71254-0735
PO BOX 736, LAKE PROVIDENCE, LA 71254-0736
PO BOX 737, LAKE PROVIDENCE, LA 71254-0737
PO BOX 738, LAKE PROVIDENCE, LA 71254-0738
PO BOX 739, LAKE PROVIDENCE, LA 71254-0739
PO BOX 740, LAKE PROVIDENCE, LA 71254-0740
PO BOX 741, LAKE PROVIDENCE, LA 71254-0741
PO BOX 742, LAKE PROVIDENCE, LA 71254-0742
PO BOX 743, LAKE PROVIDENCE, LA 71254-0743
PO BOX 744, LAKE PROVIDENCE, LA 71254-0744
PO BOX 745, LAKE PROVIDENCE, LA 71254-0745
PO BOX 746, LAKE PROVIDENCE, LA 71254-0746
PO BOX 747, LAKE PROVIDENCE, LA 71254-0747
PO BOX 748, LAKE PROVIDENCE, LA 71254-0748
PO BOX 749, LAKE PROVIDENCE, LA 71254-0749
PO BOX 750, LAKE PROVIDENCE, LA 71254-0750
PO BOX 751, LAKE PROVIDENCE, LA 71254-0751
PO BOX 752, LAKE PROVIDENCE, LA 71254-0752
PO BOX 753, LAKE PROVIDENCE, LA 71254-0753
PO BOX 754, LAKE PROVIDENCE, LA 71254-0754
PO BOX 755, LAKE PROVIDENCE, LA 71254-0755
PO BOX 756, LAKE PROVIDENCE, LA 71254-0756
PO BOX 757, LAKE PROVIDENCE, LA 71254-0757
PO BOX 758, LAKE PROVIDENCE, LA 71254-0758
PO BOX 759, LAKE PROVIDENCE, LA 71254-0759
PO BOX 760, LAKE PROVIDENCE, LA 71254-0760
PO BOX 761, LAKE PROVIDENCE, LA 71254-0761
PO BOX 762, LAKE PROVIDENCE, LA 71254-0762
PO BOX 763, LAKE PROVIDENCE, LA 71254-0763
PO BOX 764, LAKE PROVIDENCE, LA 71254-0764
PO BOX 765, LAKE PROVIDENCE, LA 71254-0765
PO BOX 766, LAKE PROVIDENCE, LA 71254-0766
PO BOX 767, LAKE PROVIDENCE, LA 71254-0767
PO BOX 768, LAKE PROVIDENCE, LA 71254-0768
PO BOX 769, LAKE PROVIDENCE, LA 71254-0769
PO BOX 770, LAKE PROVIDENCE, LA 71254-0770
PO BOX 771, LAKE PROVIDENCE, LA 71254-0771
PO BOX 772, LAKE PROVIDENCE, LA 71254-0772
PO BOX 773, LAKE PROVIDENCE, LA 71254-0773
PO BOX 774, LAKE PROVIDENCE, LA 71254-0774
PO BOX 775, LAKE PROVIDENCE, LA 71254-0775
PO BOX 776, LAKE PROVIDENCE, LA 71254-0776
PO BOX 777, LAKE PROVIDENCE, LA 71254-0777
PO BOX 778, LAKE PROVIDENCE, LA 71254-0778
PO BOX 779, LAKE PROVIDENCE, LA 71254-0779
PO BOX 780, LAKE PROVIDENCE, LA 71254-0780
PO BOX 781, LAKE PROVIDENCE, LA 71254-0781
PO BOX 782, LAKE PROVIDENCE, LA 71254-0782
PO BOX 783, LAKE PROVIDENCE, LA 71254-0783
PO BOX 784, LAKE PROVIDENCE, LA 71254-0784
PO BOX 785, LAKE PROVIDENCE, LA 71254-0785
PO BOX 786, LAKE PROVIDENCE, LA 71254-0786
PO BOX 787, LAKE PROVIDENCE, LA 71254-0787
PO BOX 788, LAKE PROVIDENCE, LA 71254-0788
PO BOX 789, LAKE PROVIDENCE, LA 71254-0789
PO BOX 790, LAKE PROVIDENCE, LA 71254-0790
PO BOX 791, LAKE PROVIDENCE, LA 71254-0791
PO BOX 792, LAKE PROVIDENCE, LA 71254-0792
PO BOX 793, LAKE PROVIDENCE, LA 71254-0793
PO BOX 794, LAKE PROVIDENCE, LA 71254-0794
PO BOX 795, LAKE PROVIDENCE, LA 71254-0795
PO BOX 796, LAKE PROVIDENCE, LA 71254-0796
PO BOX 797, LAKE PROVIDENCE, LA 71254-0797
PO BOX 798, LAKE PROVIDENCE, LA 71254-0798
PO BOX 799, LAKE PROVIDENCE, LA 71254-0799
PO BOX 800, LAKE PROVIDENCE, LA 71254-0800
PO BOX 801, LAKE PROVIDENCE, LA 71254-0801
PO BOX 802, LAKE PROVIDENCE, LA 71254-0802
PO BOX 803, LAKE PROVIDENCE, LA 71254-0803
PO BOX 804, LAKE PROVIDENCE, LA 71254-0804
PO BOX 805, LAKE PROVIDENCE, LA 71254-0805
PO BOX 806, LAKE PROVIDENCE, LA 71254-0806
PO BOX 807, LAKE PROVIDENCE, LA 71254-0807
PO BOX 808, LAKE PROVIDENCE, LA 71254-0808
PO BOX 809, LAKE PROVIDENCE, LA 71254-0809
PO BOX 810, LAKE PROVIDENCE, LA 71254-0810
PO BOX 811, LAKE PROVIDENCE, LA 71254-0811
PO BOX 812, LAKE PROVIDENCE, LA 71254-0812
PO BOX 813, LAKE PROVIDENCE, LA 71254-0813
PO BOX 814, LAKE PROVIDENCE, LA 71254-0814
PO BOX 815, LAKE PROVIDENCE, LA 71254-0815
PO BOX 816, LAKE PROVIDENCE, LA 71254-0816
PO BOX 817, LAKE PROVIDENCE, LA 71254-0817
PO BOX 818, LAKE PROVIDENCE, LA 71254-0818
PO BOX 819, LAKE PROVIDENCE, LA 71254-0819
PO BOX 820, LAKE PROVIDENCE, LA 71254-0820
PO BOX 821, LAKE PROVIDENCE, LA 71254-0821
PO BOX 822, LAKE PROVIDENCE, LA 71254-0822
PO BOX 823, LAKE PROVIDENCE, LA 71254-0823
PO BOX 824, LAKE PROVIDENCE, LA 71254-0824
PO BOX 825, LAKE PROVIDENCE, LA 71254-0825
PO BOX 826, LAKE PROVIDENCE, LA 71254-0826
PO BOX 827, LAKE PROVIDENCE, LA 71254-0827
PO BOX 828, LAKE PROVIDENCE, LA 71254-0828
PO BOX 829, LAKE PROVIDENCE, LA 71254-0829
PO BOX 830, LAKE PROVIDENCE, LA 71254-0830
PO BOX 831, LAKE PROVIDENCE, LA 71254-0831
PO BOX 832, LAKE PROVIDENCE, LA 71254-0832
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