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, KINGSVILLE, TX 78364-0681
PO BOX 682, KINGSVILLE, TX 78364-0682
PO BOX 683, KINGSVILLE, TX 78364-0683
PO BOX 684, KINGSVILLE, TX 78364-0684
PO BOX 685, KINGSVILLE, TX 78364-0685
PO BOX 686, KINGSVILLE, TX 78364-0686
PO BOX 687, KINGSVILLE, TX 78364-0687
PO BOX 688, KINGSVILLE, TX 78364-0688
PO BOX 689, KINGSVILLE, TX 78364-0689
PO BOX 690, KINGSVILLE, TX 78364-0690
PO BOX 691, KINGSVILLE, TX 78364-0691
PO BOX 692, KINGSVILLE, TX 78364-0692
PO BOX 693, KINGSVILLE, TX 78364-0693
PO BOX 694, KINGSVILLE, TX 78364-0694
PO BOX 695, KINGSVILLE, TX 78364-0695
PO BOX 696, KINGSVILLE, TX 78364-0696
PO BOX 697, KINGSVILLE, TX 78364-0697
PO BOX 698, KINGSVILLE, TX 78364-0698
PO BOX 699, KINGSVILLE, TX 78364-0699
PO BOX 700, KINGSVILLE, TX 78364-0700
PO BOX 701, KINGSVILLE, TX 78364-0701
PO BOX 702, KINGSVILLE, TX 78364-0702
PO BOX 703, KINGSVILLE, TX 78364-0703
PO BOX 704, KINGSVILLE, TX 78364-0704
PO BOX 705, KINGSVILLE, TX 78364-0705
PO BOX 706, KINGSVILLE, TX 78364-0706
PO BOX 707, KINGSVILLE, TX 78364-0707
PO BOX 708, KINGSVILLE, TX 78364-0708
PO BOX 709, KINGSVILLE, TX 78364-0709
PO BOX 710, KINGSVILLE, TX 78364-0710
PO BOX 711, KINGSVILLE, TX 78364-0711
PO BOX 712, KINGSVILLE, TX 78364-0712
PO BOX 713, KINGSVILLE, TX 78364-0713
PO BOX 714, KINGSVILLE, TX 78364-0714
PO BOX 715, KINGSVILLE, TX 78364-0715
PO BOX 716, KINGSVILLE, TX 78364-0716
PO BOX 717, KINGSVILLE, TX 78364-0717
PO BOX 718, KINGSVILLE, TX 78364-0718
PO BOX 719, KINGSVILLE, TX 78364-0719
PO BOX 720, KINGSVILLE, TX 78364-0720
PO BOX 721, KINGSVILLE, TX 78364-0721
PO BOX 722, KINGSVILLE, TX 78364-0722
PO BOX 723, KINGSVILLE, TX 78364-0723
PO BOX 724, KINGSVILLE, TX 78364-0724
PO BOX 725, KINGSVILLE, TX 78364-0725
PO BOX 726, KINGSVILLE, TX 78364-0726
PO BOX 727, KINGSVILLE, TX 78364-0727
PO BOX 728, KINGSVILLE, TX 78364-0728
PO BOX 729, KINGSVILLE, TX 78364-0729
PO BOX 730, KINGSVILLE, TX 78364-0730
PO BOX 731, KINGSVILLE, TX 78364-0731
PO BOX 732, KINGSVILLE, TX 78364-0732
PO BOX 733, KINGSVILLE, TX 78364-0733
PO BOX 734, KINGSVILLE, TX 78364-0734
PO BOX 735, KINGSVILLE, TX 78364-0735
PO BOX 736, KINGSVILLE, TX 78364-0736
PO BOX 737, KINGSVILLE, TX 78364-0737
PO BOX 738, KINGSVILLE, TX 78364-0738
PO BOX 739, KINGSVILLE, TX 78364-0739
PO BOX 740, KINGSVILLE, TX 78364-0740
PO BOX 741, KINGSVILLE, TX 78364-0741
PO BOX 742, KINGSVILLE, TX 78364-0742
PO BOX 743, KINGSVILLE, TX 78364-0743
PO BOX 744, KINGSVILLE, TX 78364-0744
PO BOX 745, KINGSVILLE, TX 78364-0745
PO BOX 746, KINGSVILLE, TX 78364-0746
PO BOX 747, KINGSVILLE, TX 78364-0747
PO BOX 748, KINGSVILLE, TX 78364-0748
PO BOX 749, KINGSVILLE, TX 78364-0749
PO BOX 750, KINGSVILLE, TX 78364-0750
PO BOX 751, KINGSVILLE, TX 78364-0751
PO BOX 752, KINGSVILLE, TX 78364-0752
PO BOX 753, KINGSVILLE, TX 78364-0753
PO BOX 754, KINGSVILLE, TX 78364-0754
PO BOX 755, KINGSVILLE, TX 78364-0755
PO BOX 756, KINGSVILLE, TX 78364-0756
PO BOX 757, KINGSVILLE, TX 78364-0757
PO BOX 758, KINGSVILLE, TX 78364-0758
PO BOX 759, KINGSVILLE, TX 78364-0759
PO BOX 760, KINGSVILLE, TX 78364-0760
PO BOX 761, KINGSVILLE, TX 78364-0761
PO BOX 762, KINGSVILLE, TX 78364-0762
PO BOX 763, KINGSVILLE, TX 78364-0763
PO BOX 764, KINGSVILLE, TX 78364-0764
PO BOX 765, KINGSVILLE, TX 78364-0765
PO BOX 766, KINGSVILLE, TX 78364-0766
PO BOX 767, KINGSVILLE, TX 78364-0767
PO BOX 768, KINGSVILLE, TX 78364-0768
PO BOX 769, KINGSVILLE, TX 78364-0769
PO BOX 770, KINGSVILLE, TX 78364-0770
PO BOX 771, KINGSVILLE, TX 78364-0771
PO BOX 772, KINGSVILLE, TX 78364-0772
PO BOX 773, KINGSVILLE, TX 78364-0773
PO BOX 774, KINGSVILLE, TX 78364-0774
PO BOX 775, KINGSVILLE, TX 78364-0775
PO BOX 776, KINGSVILLE, TX 78364-0776
PO BOX 777, KINGSVILLE, TX 78364-0777
PO BOX 778, KINGSVILLE, TX 78364-0778
PO BOX 779, KINGSVILLE, TX 78364-0779
PO BOX 780, KINGSVILLE, TX 78364-0780
PO BOX 781, KINGSVILLE, TX 78364-0781
PO BOX 782, KINGSVILLE, TX 78364-0782
PO BOX 783, KINGSVILLE, TX 78364-0783
PO BOX 784, KINGSVILLE, TX 78364-0784
PO BOX 785, KINGSVILLE, TX 78364-0785
PO BOX 786, KINGSVILLE, TX 78364-0786
PO BOX 787, KINGSVILLE, TX 78364-0787
PO BOX 788, KINGSVILLE, TX 78364-0788
PO BOX 789, KINGSVILLE, TX 78364-0789
PO BOX 790, KINGSVILLE, TX 78364-0790
PO BOX 791, KINGSVILLE, TX 78364-0791
PO BOX 792, KINGSVILLE, TX 78364-0792
PO BOX 793, KINGSVILLE, TX 78364-0793
PO BOX 794, KINGSVILLE, TX 78364-0794
PO BOX 795, KINGSVILLE, TX 78364-0795
PO BOX 796, KINGSVILLE, TX 78364-0796
PO BOX 797, KINGSVILLE, TX 78364-0797
PO BOX 798, KINGSVILLE, TX 78364-0798
PO BOX 799, KINGSVILLE, TX 78364-0799
PO BOX 800, KINGSVILLE, TX 78364-0800
PO BOX 801, KINGSVILLE, TX 78364-0801
PO BOX 802, KINGSVILLE, TX 78364-0802
PO BOX 803, KINGSVILLE, TX 78364-0803
PO BOX 804, KINGSVILLE, TX 78364-0804
PO BOX 805, KINGSVILLE, TX 78364-0805
PO BOX 806, KINGSVILLE, TX 78364-0806
PO BOX 807, KINGSVILLE, TX 78364-0807
PO BOX 808, KINGSVILLE, TX 78364-0808
PO BOX 809, KINGSVILLE, TX 78364-0809
PO BOX 810, KINGSVILLE, TX 78364-0810
PO BOX 811, KINGSVILLE, TX 78364-0811
PO BOX 812, KINGSVILLE, TX 78364-0812
PO BOX 813, KINGSVILLE, TX 78364-0813
PO BOX 814, KINGSVILLE, TX 78364-0814
PO BOX 815, KINGSVILLE, TX 78364-0815
PO BOX 816, KINGSVILLE, TX 78364-0816
PO BOX 817, KINGSVILLE, TX 78364-0817
PO BOX 818, KINGSVILLE, TX 78364-0818
PO BOX 819, KINGSVILLE, TX 78364-0819
PO BOX 820, KINGSVILLE, TX 78364-0820
PO BOX 821, KINGSVILLE, TX 78364-0821
PO BOX 822, KINGSVILLE, TX 78364-0822
PO BOX 823, KINGSVILLE, TX 78364-0823
PO BOX 824, KINGSVILLE, TX 78364-0824
PO BOX 825, KINGSVILLE, TX 78364-0825
PO BOX 826, KINGSVILLE, TX 78364-0826
PO BOX 827, KINGSVILLE, TX 78364-0827
PO BOX 828, KINGSVILLE, TX 78364-0828
PO BOX 829, KINGSVILLE, TX 78364-0829
PO BOX 830, KINGSVILLE, TX 78364-0830
PO BOX 831, KINGSVILLE, TX 78364-0831
PO BOX 832, KINGSVILLE, TX 78364-0832
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