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, KELLYVILLE, OK 74039-0661
PO BOX 662, KELLYVILLE, OK 74039-0662
PO BOX 663, KELLYVILLE, OK 74039-0663
PO BOX 664, KELLYVILLE, OK 74039-0664
PO BOX 665, KELLYVILLE, OK 74039-0665
PO BOX 666, KELLYVILLE, OK 74039-0666
PO BOX 667, KELLYVILLE, OK 74039-0667
PO BOX 668, KELLYVILLE, OK 74039-0668
PO BOX 669, KELLYVILLE, OK 74039-0669
PO BOX 670, KELLYVILLE, OK 74039-0670
PO BOX 671, KELLYVILLE, OK 74039-0671
PO BOX 672, KELLYVILLE, OK 74039-0672
PO BOX 673, KELLYVILLE, OK 74039-0673
PO BOX 674, KELLYVILLE, OK 74039-0674
PO BOX 675, KELLYVILLE, OK 74039-0675
PO BOX 676, KELLYVILLE, OK 74039-0676
PO BOX 677, KELLYVILLE, OK 74039-0677
PO BOX 678, KELLYVILLE, OK 74039-0678
PO BOX 679, KELLYVILLE, OK 74039-0679
PO BOX 680, KELLYVILLE, OK 74039-0680
PO BOX 681, KELLYVILLE, OK 74039-0681
PO BOX 682, KELLYVILLE, OK 74039-0682
PO BOX 683, KELLYVILLE, OK 74039-0683
PO BOX 684, KELLYVILLE, OK 74039-0684
PO BOX 685, KELLYVILLE, OK 74039-0685
PO BOX 686, KELLYVILLE, OK 74039-0686
PO BOX 687, KELLYVILLE, OK 74039-0687
PO BOX 688, KELLYVILLE, OK 74039-0688
PO BOX 689, KELLYVILLE, OK 74039-0689
PO BOX 690, KELLYVILLE, OK 74039-0690
PO BOX 691, KELLYVILLE, OK 74039-0691
PO BOX 692, KELLYVILLE, OK 74039-0692
PO BOX 693, KELLYVILLE, OK 74039-0693
PO BOX 694, KELLYVILLE, OK 74039-0694
PO BOX 695, KELLYVILLE, OK 74039-0695
PO BOX 696, KELLYVILLE, OK 74039-0696
PO BOX 697, KELLYVILLE, OK 74039-0697
PO BOX 698, KELLYVILLE, OK 74039-0698
PO BOX 699, KELLYVILLE, OK 74039-0699
PO BOX 700, KELLYVILLE, OK 74039-0700
PO BOX 701, KELLYVILLE, OK 74039-0701
PO BOX 702, KELLYVILLE, OK 74039-0702
PO BOX 703, KELLYVILLE, OK 74039-0703
PO BOX 704, KELLYVILLE, OK 74039-0704
PO BOX 705, KELLYVILLE, OK 74039-0705
PO BOX 706, KELLYVILLE, OK 74039-0706
PO BOX 707, KELLYVILLE, OK 74039-0707
PO BOX 708, KELLYVILLE, OK 74039-0708
PO BOX 709, KELLYVILLE, OK 74039-0709
PO BOX 710, KELLYVILLE, OK 74039-0710
PO BOX 711, KELLYVILLE, OK 74039-0711
PO BOX 712, KELLYVILLE, OK 74039-0712
PO BOX 713, KELLYVILLE, OK 74039-0713
PO BOX 714, KELLYVILLE, OK 74039-0714
PO BOX 715, KELLYVILLE, OK 74039-0715
PO BOX 716, KELLYVILLE, OK 74039-0716
PO BOX 717, KELLYVILLE, OK 74039-0717
PO BOX 718, KELLYVILLE, OK 74039-0718
PO BOX 719, KELLYVILLE, OK 74039-0719
PO BOX 720, KELLYVILLE, OK 74039-0720
PO BOX 721, KELLYVILLE, OK 74039-0721
PO BOX 722, KELLYVILLE, OK 74039-0722
PO BOX 723, KELLYVILLE, OK 74039-0723
PO BOX 724, KELLYVILLE, OK 74039-0724
PO BOX 725, KELLYVILLE, OK 74039-0725
PO BOX 726, KELLYVILLE, OK 74039-0726
PO BOX 727, KELLYVILLE, OK 74039-0727
PO BOX 728, KELLYVILLE, OK 74039-0728
PO BOX 729, KELLYVILLE, OK 74039-0729
PO BOX 730, KELLYVILLE, OK 74039-0730
PO BOX 731, KELLYVILLE, OK 74039-0731
PO BOX 732, KELLYVILLE, OK 74039-0732
PO BOX 733, KELLYVILLE, OK 74039-0733
PO BOX 734, KELLYVILLE, OK 74039-0734
PO BOX 735, KELLYVILLE, OK 74039-0735
PO BOX 736, KELLYVILLE, OK 74039-0736
PO BOX 737, KELLYVILLE, OK 74039-0737
PO BOX 738, KELLYVILLE, OK 74039-0738
PO BOX 739, KELLYVILLE, OK 74039-0739
PO BOX 740, KELLYVILLE, OK 74039-0740
PO BOX 741, KELLYVILLE, OK 74039-0741
PO BOX 742, KELLYVILLE, OK 74039-0742
PO BOX 743, KELLYVILLE, OK 74039-0743
PO BOX 744, KELLYVILLE, OK 74039-0744
PO BOX 745, KELLYVILLE, OK 74039-0745
PO BOX 746, KELLYVILLE, OK 74039-0746
PO BOX 747, KELLYVILLE, OK 74039-0747
PO BOX 748, KELLYVILLE, OK 74039-0748
PO BOX 749, KELLYVILLE, OK 74039-0749
PO BOX 750, KELLYVILLE, OK 74039-0750
PO BOX 751, KELLYVILLE, OK 74039-0751
PO BOX 752, KELLYVILLE, OK 74039-0752
PO BOX 753, KELLYVILLE, OK 74039-0753
PO BOX 754, KELLYVILLE, OK 74039-0754
PO BOX 755, KELLYVILLE, OK 74039-0755
PO BOX 756, KELLYVILLE, OK 74039-0756
PO BOX 757, KELLYVILLE, OK 74039-0757
PO BOX 758, KELLYVILLE, OK 74039-0758
PO BOX 759, KELLYVILLE, OK 74039-0759
PO BOX 760, KELLYVILLE, OK 74039-0760
PO BOX 761, KELLYVILLE, OK 74039-0761
PO BOX 762, KELLYVILLE, OK 74039-0762
PO BOX 763, KELLYVILLE, OK 74039-0763
PO BOX 764, KELLYVILLE, OK 74039-0764
PO BOX 765, KELLYVILLE, OK 74039-0765
PO BOX 766, KELLYVILLE, OK 74039-0766
PO BOX 767, KELLYVILLE, OK 74039-0767
PO BOX 768, KELLYVILLE, OK 74039-0768
PO BOX 769, KELLYVILLE, OK 74039-0769
PO BOX 770, KELLYVILLE, OK 74039-0770
PO BOX 771, KELLYVILLE, OK 74039-0771
PO BOX 772, KELLYVILLE, OK 74039-0772
PO BOX 773, KELLYVILLE, OK 74039-0773
PO BOX 774, KELLYVILLE, OK 74039-0774
PO BOX 775, KELLYVILLE, OK 74039-0775
PO BOX 776, KELLYVILLE, OK 74039-0776
PO BOX 777, KELLYVILLE, OK 74039-0777
PO BOX 778, KELLYVILLE, OK 74039-0778
PO BOX 779, KELLYVILLE, OK 74039-0779
PO BOX 780, KELLYVILLE, OK 74039-0780
PO BOX 781, KELLYVILLE, OK 74039-0781
PO BOX 782, KELLYVILLE, OK 74039-0782
PO BOX 783, KELLYVILLE, OK 74039-0783
PO BOX 784, KELLYVILLE, OK 74039-0784
PO BOX 785, KELLYVILLE, OK 74039-0785
PO BOX 786, KELLYVILLE, OK 74039-0786
PO BOX 787, KELLYVILLE, OK 74039-0787
PO BOX 788, KELLYVILLE, OK 74039-0788
PO BOX 789, KELLYVILLE, OK 74039-0789
PO BOX 790, KELLYVILLE, OK 74039-0790
PO BOX 791, KELLYVILLE, OK 74039-0791
PO BOX 792, KELLYVILLE, OK 74039-0792
PO BOX 793, KELLYVILLE, OK 74039-0793
PO BOX 794, KELLYVILLE, OK 74039-0794
PO BOX 795, KELLYVILLE, OK 74039-0795
PO BOX 796, KELLYVILLE, OK 74039-0796
PO BOX 797, KELLYVILLE, OK 74039-0797
PO BOX 798, KELLYVILLE, OK 74039-0798
PO BOX 799, KELLYVILLE, OK 74039-0799
PO BOX 800, KELLYVILLE, OK 74039-0800
PO BOX 801, KELLYVILLE, OK 74039-0801
PO BOX 802, KELLYVILLE, OK 74039-0802
PO BOX 803, KELLYVILLE, OK 74039-0803
PO BOX 804, KELLYVILLE, OK 74039-0804
PO BOX 805, KELLYVILLE, OK 74039-0805
PO BOX 806, KELLYVILLE, OK 74039-0806
PO BOX 807, KELLYVILLE, OK 74039-0807
PO BOX 808, KELLYVILLE, OK 74039-0808
PO BOX 809, KELLYVILLE, OK 74039-0809
PO BOX 810, KELLYVILLE, OK 74039-0810
PO BOX 811, KELLYVILLE, OK 74039-0811
PO BOX 812, KELLYVILLE, OK 74039-0812
PO BOX 813, KELLYVILLE, OK 74039-0813
PO BOX 814, KELLYVILLE, OK 74039-0814
PO BOX 815, KELLYVILLE, OK 74039-0815
PO BOX 816, KELLYVILLE, OK 74039-0816
PO BOX 817, KELLYVILLE, OK 74039-0817
PO BOX 818, KELLYVILLE, OK 74039-0818
PO BOX 819, KELLYVILLE, OK 74039-0819
PO BOX 820, KELLYVILLE, OK 74039-0820
PO BOX 821, KELLYVILLE, OK 74039-0821
PO BOX 822, KELLYVILLE, OK 74039-0822
PO BOX 823, KELLYVILLE, OK 74039-0823
PO BOX 824, KELLYVILLE, OK 74039-0824
PO BOX 825, KELLYVILLE, OK 74039-0825
PO BOX 826, KELLYVILLE, OK 74039-0826
PO BOX 827, KELLYVILLE, OK 74039-0827
PO BOX 828, KELLYVILLE, OK 74039-0828
PO BOX 829, KELLYVILLE, OK 74039-0829
PO BOX 830, KELLYVILLE, OK 74039-0830
PO BOX 831, KELLYVILLE, OK 74039-0831
PO BOX 832, KELLYVILLE, OK 74039-0832
PO BOX 833, KELLYVILLE, OK 74039-0833
PO BOX 834, KELLYVILLE, OK 74039-0834
PO BOX 835, KELLYVILLE, OK 74039-0835
PO BOX 836, KELLYVILLE, OK 74039-0836
PO BOX 837, KELLYVILLE, OK 74039-0837
PO BOX 838, KELLYVILLE, OK 74039-0838
PO BOX 839, KELLYVILLE, OK 74039-0839
PO BOX 840, KELLYVILLE, OK 74039-0840
PO BOX 841, KELLYVILLE, OK 74039-0841
PO BOX 842, KELLYVILLE, OK 74039-0842
PO BOX 843, KELLYVILLE, OK 74039-0843
PO BOX 844, KELLYVILLE, OK 74039-0844
PO BOX 845, KELLYVILLE, OK 74039-0845
PO BOX 846, KELLYVILLE, OK 74039-0846
PO BOX 847, KELLYVILLE, OK 74039-0847
PO BOX 848, KELLYVILLE, OK 74039-0848
PO BOX 849, KELLYVILLE, OK 74039-0849
PO BOX 850, KELLYVILLE, OK 74039-0850
PO BOX 851, KELLYVILLE, OK 74039-0851
PO BOX 852, KELLYVILLE, OK 74039-0852
PO BOX 853, KELLYVILLE, OK 74039-0853
PO BOX 854, KELLYVILLE, OK 74039-0854
PO BOX 855, KELLYVILLE, OK 74039-0855
PO BOX 856, KELLYVILLE, OK 74039-0856
PO BOX 857, KELLYVILLE, OK 74039-0857
PO BOX 858, KELLYVILLE, OK 74039-0858
PO BOX 859, KELLYVILLE, OK 74039-0859
PO BOX 860, KELLYVILLE, OK 74039-0860
PO BOX 861, KELLYVILLE, OK 74039-0861
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