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 721, POUGHKEEPSIE, NY 12602-0721
PO BOX 722, POUGHKEEPSIE, NY 12602-0722
PO BOX 723, POUGHKEEPSIE, NY 12602-0723
PO BOX 724, POUGHKEEPSIE, NY 12602-0724
PO BOX 725, POUGHKEEPSIE, NY 12602-0725
PO BOX 726, POUGHKEEPSIE, NY 12602-0726
PO BOX 727, POUGHKEEPSIE, NY 12602-0727
PO BOX 728, POUGHKEEPSIE, NY 12602-0728
PO BOX 729, POUGHKEEPSIE, NY 12602-0729
PO BOX 730, POUGHKEEPSIE, NY 12602-0730
PO BOX 731, POUGHKEEPSIE, NY 12602-0731
PO BOX 732, POUGHKEEPSIE, NY 12602-0732
PO BOX 733, POUGHKEEPSIE, NY 12602-0733
PO BOX 734, POUGHKEEPSIE, NY 12602-0734
PO BOX 735, POUGHKEEPSIE, NY 12602-0735
PO BOX 736, POUGHKEEPSIE, NY 12602-0736
PO BOX 737, POUGHKEEPSIE, NY 12602-0737
PO BOX 738, POUGHKEEPSIE, NY 12602-0738
PO BOX 739, POUGHKEEPSIE, NY 12602-0739
PO BOX 740, POUGHKEEPSIE, NY 12602-0740
PO BOX 741, POUGHKEEPSIE, NY 12602-0741
PO BOX 742, POUGHKEEPSIE, NY 12602-0742
PO BOX 743, POUGHKEEPSIE, NY 12602-0743
PO BOX 744, POUGHKEEPSIE, NY 12602-0744
PO BOX 745, POUGHKEEPSIE, NY 12602-0745
PO BOX 746, POUGHKEEPSIE, NY 12602-0746
PO BOX 747, POUGHKEEPSIE, NY 12602-0747
PO BOX 748, POUGHKEEPSIE, NY 12602-0748
PO BOX 749, POUGHKEEPSIE, NY 12602-0749
PO BOX 750, POUGHKEEPSIE, NY 12602-0750
PO BOX 751, POUGHKEEPSIE, NY 12602-0751
PO BOX 752, POUGHKEEPSIE, NY 12602-0752
PO BOX 753, POUGHKEEPSIE, NY 12602-0753
PO BOX 754, POUGHKEEPSIE, NY 12602-0754
PO BOX 755, POUGHKEEPSIE, NY 12602-0755
PO BOX 756, POUGHKEEPSIE, NY 12602-0756
PO BOX 757, POUGHKEEPSIE, NY 12602-0757
PO BOX 758, POUGHKEEPSIE, NY 12602-0758
PO BOX 759, POUGHKEEPSIE, NY 12602-0759
PO BOX 760, POUGHKEEPSIE, NY 12602-0760
PO BOX 761, POUGHKEEPSIE, NY 12602-0761
PO BOX 762, POUGHKEEPSIE, NY 12602-0762
PO BOX 763, POUGHKEEPSIE, NY 12602-0763
PO BOX 764, POUGHKEEPSIE, NY 12602-0764
PO BOX 765, POUGHKEEPSIE, NY 12602-0765
PO BOX 766, POUGHKEEPSIE, NY 12602-0766
PO BOX 767, POUGHKEEPSIE, NY 12602-0767
PO BOX 768, POUGHKEEPSIE, NY 12602-0768
PO BOX 769, POUGHKEEPSIE, NY 12602-0769
PO BOX 770, POUGHKEEPSIE, NY 12602-0770
PO BOX 771, POUGHKEEPSIE, NY 12602-0771
PO BOX 772, POUGHKEEPSIE, NY 12602-0772
PO BOX 773, POUGHKEEPSIE, NY 12602-0773
PO BOX 774, POUGHKEEPSIE, NY 12602-0774
PO BOX 775, POUGHKEEPSIE, NY 12602-0775
PO BOX 776, POUGHKEEPSIE, NY 12602-0776
PO BOX 777, POUGHKEEPSIE, NY 12602-0777
PO BOX 778, POUGHKEEPSIE, NY 12602-0778
PO BOX 779, POUGHKEEPSIE, NY 12602-0779
PO BOX 780, POUGHKEEPSIE, NY 12602-0780
PO BOX 781, POUGHKEEPSIE, NY 12602-0781
PO BOX 782, POUGHKEEPSIE, NY 12602-0782
PO BOX 783, POUGHKEEPSIE, NY 12602-0783
PO BOX 784, POUGHKEEPSIE, NY 12602-0784
PO BOX 785, POUGHKEEPSIE, NY 12602-0785
PO BOX 786, POUGHKEEPSIE, NY 12602-0786
PO BOX 787, POUGHKEEPSIE, NY 12602-0787
PO BOX 788, POUGHKEEPSIE, NY 12602-0788
PO BOX 789, POUGHKEEPSIE, NY 12602-0789
PO BOX 790, POUGHKEEPSIE, NY 12602-0790
PO BOX 791, POUGHKEEPSIE, NY 12602-0791
PO BOX 792, POUGHKEEPSIE, NY 12602-0792
PO BOX 793, POUGHKEEPSIE, NY 12602-0793
PO BOX 794, POUGHKEEPSIE, NY 12602-0794
PO BOX 795, POUGHKEEPSIE, NY 12602-0795
PO BOX 796, POUGHKEEPSIE, NY 12602-0796
PO BOX 797, POUGHKEEPSIE, NY 12602-0797
PO BOX 798, POUGHKEEPSIE, NY 12602-0798
PO BOX 799, POUGHKEEPSIE, NY 12602-0799
PO BOX 800, POUGHKEEPSIE, NY 12602-0800
PO BOX 801, POUGHKEEPSIE, NY 12602-0801
PO BOX 802, POUGHKEEPSIE, NY 12602-0802
PO BOX 803, POUGHKEEPSIE, NY 12602-0803
PO BOX 804, POUGHKEEPSIE, NY 12602-0804
PO BOX 805, POUGHKEEPSIE, NY 12602-0805
PO BOX 806, POUGHKEEPSIE, NY 12602-0806
PO BOX 807, POUGHKEEPSIE, NY 12602-0807
PO BOX 808, POUGHKEEPSIE, NY 12602-0808
PO BOX 809, POUGHKEEPSIE, NY 12602-0809
PO BOX 810, POUGHKEEPSIE, NY 12602-0810
PO BOX 811, POUGHKEEPSIE, NY 12602-0811
PO BOX 812, POUGHKEEPSIE, NY 12602-0812
PO BOX 813, POUGHKEEPSIE, NY 12602-0813
PO BOX 814, POUGHKEEPSIE, NY 12602-0814
PO BOX 815, POUGHKEEPSIE, NY 12602-0815
PO BOX 816, POUGHKEEPSIE, NY 12602-0816
PO BOX 817, POUGHKEEPSIE, NY 12602-0817
PO BOX 818, POUGHKEEPSIE, NY 12602-0818
PO BOX 819, POUGHKEEPSIE, NY 12602-0819
PO BOX 820, POUGHKEEPSIE, NY 12602-0820
PO BOX 821, POUGHKEEPSIE, NY 12602-0821
PO BOX 822, POUGHKEEPSIE, NY 12602-0822
PO BOX 823, POUGHKEEPSIE, NY 12602-0823
PO BOX 824, POUGHKEEPSIE, NY 12602-0824
PO BOX 825, POUGHKEEPSIE, NY 12602-0825
PO BOX 826, POUGHKEEPSIE, NY 12602-0826
PO BOX 827, POUGHKEEPSIE, NY 12602-0827
PO BOX 828, POUGHKEEPSIE, NY 12602-0828
PO BOX 829, POUGHKEEPSIE, NY 12602-0829
PO BOX 830, POUGHKEEPSIE, NY 12602-0830
PO BOX 831, POUGHKEEPSIE, NY 12602-0831
PO BOX 832, POUGHKEEPSIE, NY 12602-0832
PO BOX 833, POUGHKEEPSIE, NY 12602-0833
PO BOX 834, POUGHKEEPSIE, NY 12602-0834
PO BOX 835, POUGHKEEPSIE, NY 12602-0835
PO BOX 836, POUGHKEEPSIE, NY 12602-0836
PO BOX 837, POUGHKEEPSIE, NY 12602-0837
PO BOX 838, POUGHKEEPSIE, NY 12602-0838
PO BOX 839, POUGHKEEPSIE, NY 12602-0839
PO BOX 840, POUGHKEEPSIE, NY 12602-0840
PO BOX 841, POUGHKEEPSIE, NY 12602-0841
PO BOX 842, POUGHKEEPSIE, NY 12602-0842
PO BOX 843, POUGHKEEPSIE, NY 12602-0843
PO BOX 844, POUGHKEEPSIE, NY 12602-0844
PO BOX 845, POUGHKEEPSIE, NY 12602-0845
PO BOX 846, POUGHKEEPSIE, NY 12602-0846
PO BOX 847, POUGHKEEPSIE, NY 12602-0847
PO BOX 848, POUGHKEEPSIE, NY 12602-0848
PO BOX 849, POUGHKEEPSIE, NY 12602-0849
PO BOX 850, POUGHKEEPSIE, NY 12602-0850
PO BOX 851, POUGHKEEPSIE, NY 12602-0851
PO BOX 852, POUGHKEEPSIE, NY 12602-0852
PO BOX 853, POUGHKEEPSIE, NY 12602-0853
PO BOX 854, POUGHKEEPSIE, NY 12602-0854
PO BOX 855, POUGHKEEPSIE, NY 12602-0855
PO BOX 856, POUGHKEEPSIE, NY 12602-0856
PO BOX 857, POUGHKEEPSIE, NY 12602-0857
PO BOX 858, POUGHKEEPSIE, NY 12602-0858
PO BOX 859, POUGHKEEPSIE, NY 12602-0859
PO BOX 860, POUGHKEEPSIE, NY 12602-0860
PO BOX 861, POUGHKEEPSIE, NY 12602-0861
PO BOX 862, POUGHKEEPSIE, NY 12602-0862
PO BOX 863, POUGHKEEPSIE, NY 12602-0863
PO BOX 864, POUGHKEEPSIE, NY 12602-0864
PO BOX 865, POUGHKEEPSIE, NY 12602-0865
PO BOX 866, POUGHKEEPSIE, NY 12602-0866
PO BOX 867, POUGHKEEPSIE, NY 12602-0867
PO BOX 868, POUGHKEEPSIE, NY 12602-0868
PO BOX 869, POUGHKEEPSIE, NY 12602-0869
PO BOX 870, POUGHKEEPSIE, NY 12602-0870
PO BOX 871, POUGHKEEPSIE, NY 12602-0871
PO BOX 872, POUGHKEEPSIE, NY 12602-0872
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