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 592, CHARLOTTESVILLE, VA 22902-0592
PO BOX 593, CHARLOTTESVILLE, VA 22902-0593
PO BOX 594, CHARLOTTESVILLE, VA 22902-0594
PO BOX 595, CHARLOTTESVILLE, VA 22902-0595
PO BOX 596, CHARLOTTESVILLE, VA 22902-0596
PO BOX 597, CHARLOTTESVILLE, VA 22902-0597
PO BOX 598, CHARLOTTESVILLE, VA 22902-0598
PO BOX 599, CHARLOTTESVILLE, VA 22902-0599
PO BOX 600, CHARLOTTESVILLE, VA 22902-0600
PO BOX 601, CHARLOTTESVILLE, VA 22902-0601
PO BOX 602, CHARLOTTESVILLE, VA 22902-0602
PO BOX 603, CHARLOTTESVILLE, VA 22902-0603
PO BOX 604, CHARLOTTESVILLE, VA 22902-0604
PO BOX 605, CHARLOTTESVILLE, VA 22902-0605
PO BOX 606, CHARLOTTESVILLE, VA 22902-0606
PO BOX 607, CHARLOTTESVILLE, VA 22902-0607
PO BOX 608, CHARLOTTESVILLE, VA 22902-0608
PO BOX 609, CHARLOTTESVILLE, VA 22902-0609
PO BOX 610, CHARLOTTESVILLE, VA 22902-0610
PO BOX 611, CHARLOTTESVILLE, VA 22902-0611
PO BOX 612, CHARLOTTESVILLE, VA 22902-0612
PO BOX 613, CHARLOTTESVILLE, VA 22902-0613
PO BOX 614, CHARLOTTESVILLE, VA 22902-0614
PO BOX 615, CHARLOTTESVILLE, VA 22902-0615
PO BOX 616, CHARLOTTESVILLE, VA 22902-0616
PO BOX 617, CHARLOTTESVILLE, VA 22902-0617
PO BOX 618, CHARLOTTESVILLE, VA 22902-0618
PO BOX 619, CHARLOTTESVILLE, VA 22902-0619
PO BOX 620, CHARLOTTESVILLE, VA 22902-0620
PO BOX 621, CHARLOTTESVILLE, VA 22902-0621
PO BOX 622, CHARLOTTESVILLE, VA 22902-0622
PO BOX 623, CHARLOTTESVILLE, VA 22902-0623
PO BOX 624, CHARLOTTESVILLE, VA 22902-0624
PO BOX 625, CHARLOTTESVILLE, VA 22902-0625
PO BOX 626, CHARLOTTESVILLE, VA 22902-0626
PO BOX 627, CHARLOTTESVILLE, VA 22902-0627
PO BOX 628, CHARLOTTESVILLE, VA 22902-0628
PO BOX 629, CHARLOTTESVILLE, VA 22902-0629
PO BOX 630, CHARLOTTESVILLE, VA 22902-0630
PO BOX 631, CHARLOTTESVILLE, VA 22902-0631
PO BOX 632, CHARLOTTESVILLE, VA 22902-0632
PO BOX 633, CHARLOTTESVILLE, VA 22902-0633
PO BOX 634, CHARLOTTESVILLE, VA 22902-0634
PO BOX 635, CHARLOTTESVILLE, VA 22902-0635
PO BOX 636, CHARLOTTESVILLE, VA 22902-0636
PO BOX 637, CHARLOTTESVILLE, VA 22902-0637
PO BOX 638, CHARLOTTESVILLE, VA 22902-0638
PO BOX 639, CHARLOTTESVILLE, VA 22902-0639
PO BOX 640, CHARLOTTESVILLE, VA 22902-0640
PO BOX 641, CHARLOTTESVILLE, VA 22902-0641
PO BOX 642, CHARLOTTESVILLE, VA 22902-0642
PO BOX 643, CHARLOTTESVILLE, VA 22902-0643
PO BOX 644, CHARLOTTESVILLE, VA 22902-0644
PO BOX 645, CHARLOTTESVILLE, VA 22902-0645
PO BOX 646, CHARLOTTESVILLE, VA 22902-0646
PO BOX 647, CHARLOTTESVILLE, VA 22902-0647
PO BOX 648, CHARLOTTESVILLE, VA 22902-0648
PO BOX 649, CHARLOTTESVILLE, VA 22902-0649
PO BOX 650, CHARLOTTESVILLE, VA 22902-0650
PO BOX 651, CHARLOTTESVILLE, VA 22902-0651
PO BOX 652, CHARLOTTESVILLE, VA 22902-0652
PO BOX 653, CHARLOTTESVILLE, VA 22902-0653
PO BOX 654, CHARLOTTESVILLE, VA 22902-0654
PO BOX 655, CHARLOTTESVILLE, VA 22902-0655
PO BOX 656, CHARLOTTESVILLE, VA 22902-0656
PO BOX 657, CHARLOTTESVILLE, VA 22902-0657
PO BOX 658, CHARLOTTESVILLE, VA 22902-0658
PO BOX 659, CHARLOTTESVILLE, VA 22902-0659
PO BOX 660, CHARLOTTESVILLE, VA 22902-0660
PO BOX 661, CHARLOTTESVILLE, VA 22902-0661
PO BOX 662, CHARLOTTESVILLE, VA 22902-0662
PO BOX 663, CHARLOTTESVILLE, VA 22902-0663
PO BOX 664, CHARLOTTESVILLE, VA 22902-0664
PO BOX 665, CHARLOTTESVILLE, VA 22902-0665
PO BOX 666, CHARLOTTESVILLE, VA 22902-0666
PO BOX 667, CHARLOTTESVILLE, VA 22902-0667
PO BOX 668, CHARLOTTESVILLE, VA 22902-0668
PO BOX 669, CHARLOTTESVILLE, VA 22902-0669
PO BOX 670, CHARLOTTESVILLE, VA 22902-0670
PO BOX 671, CHARLOTTESVILLE, VA 22902-0671
PO BOX 672, CHARLOTTESVILLE, VA 22902-0672
PO BOX 673, CHARLOTTESVILLE, VA 22902-0673
PO BOX 674, CHARLOTTESVILLE, VA 22902-0674
PO BOX 675, CHARLOTTESVILLE, VA 22902-0675
PO BOX 676, CHARLOTTESVILLE, VA 22902-0676
PO BOX 677, CHARLOTTESVILLE, VA 22902-0677
PO BOX 678, CHARLOTTESVILLE, VA 22902-0678
PO BOX 679, CHARLOTTESVILLE, VA 22902-0679
PO BOX 680, CHARLOTTESVILLE, VA 22902-0680
PO BOX 681, CHARLOTTESVILLE, VA 22902-0681
PO BOX 682, CHARLOTTESVILLE, VA 22902-0682
PO BOX 683, CHARLOTTESVILLE, VA 22902-0683
PO BOX 684, CHARLOTTESVILLE, VA 22902-0684
PO BOX 685, CHARLOTTESVILLE, VA 22902-0685
PO BOX 686, CHARLOTTESVILLE, VA 22902-0686
PO BOX 687, CHARLOTTESVILLE, VA 22902-0687
PO BOX 688, CHARLOTTESVILLE, VA 22902-0688
PO BOX 689, CHARLOTTESVILLE, VA 22902-0689
PO BOX 690, CHARLOTTESVILLE, VA 22902-0690
PO BOX 691, CHARLOTTESVILLE, VA 22902-0691
PO BOX 692, CHARLOTTESVILLE, VA 22902-0692
PO BOX 693, CHARLOTTESVILLE, VA 22902-0693
PO BOX 694, CHARLOTTESVILLE, VA 22902-0694
PO BOX 695, CHARLOTTESVILLE, VA 22902-0695
PO BOX 696, CHARLOTTESVILLE, VA 22902-0696
PO BOX 697, CHARLOTTESVILLE, VA 22902-0697
PO BOX 698, CHARLOTTESVILLE, VA 22902-0698
PO BOX 699, CHARLOTTESVILLE, VA 22902-0699
PO BOX 700, CHARLOTTESVILLE, VA 22902-0700
PO BOX 701, CHARLOTTESVILLE, VA 22902-0701
PO BOX 702, CHARLOTTESVILLE, VA 22902-0702
PO BOX 703, CHARLOTTESVILLE, VA 22902-0703
PO BOX 704, CHARLOTTESVILLE, VA 22902-0704
PO BOX 705, CHARLOTTESVILLE, VA 22902-0705
PO BOX 706, CHARLOTTESVILLE, VA 22902-0706
PO BOX 707, CHARLOTTESVILLE, VA 22902-0707
PO BOX 708, CHARLOTTESVILLE, VA 22902-0708
PO BOX 709, CHARLOTTESVILLE, VA 22902-0709
PO BOX 710, CHARLOTTESVILLE, VA 22902-0710
PO BOX 711, CHARLOTTESVILLE, VA 22902-0711
PO BOX 712, CHARLOTTESVILLE, VA 22902-0712
PO BOX 713, CHARLOTTESVILLE, VA 22902-0713
PO BOX 714, CHARLOTTESVILLE, VA 22902-0714
PO BOX 715, CHARLOTTESVILLE, VA 22902-0715
PO BOX 716, CHARLOTTESVILLE, VA 22902-0716
PO BOX 717, CHARLOTTESVILLE, VA 22902-0717
PO BOX 718, CHARLOTTESVILLE, VA 22902-0718
PO BOX 719, CHARLOTTESVILLE, VA 22902-0719
PO BOX 720, CHARLOTTESVILLE, VA 22902-0720
PO BOX 721, CHARLOTTESVILLE, VA 22902-0721
PO BOX 722, CHARLOTTESVILLE, VA 22902-0722
PO BOX 723, CHARLOTTESVILLE, VA 22902-0723
PO BOX 724, CHARLOTTESVILLE, VA 22902-0724
PO BOX 725, CHARLOTTESVILLE, VA 22902-0725
PO BOX 726, CHARLOTTESVILLE, VA 22902-0726
PO BOX 727, CHARLOTTESVILLE, VA 22902-0727
PO BOX 728, CHARLOTTESVILLE, VA 22902-0728
PO BOX 729, CHARLOTTESVILLE, VA 22902-0729
PO BOX 730, CHARLOTTESVILLE, VA 22902-0730
PO BOX 731, CHARLOTTESVILLE, VA 22902-0731
PO BOX 732, CHARLOTTESVILLE, VA 22902-0732
PO BOX 733, CHARLOTTESVILLE, VA 22902-0733
PO BOX 734, CHARLOTTESVILLE, VA 22902-0734
PO BOX 735, CHARLOTTESVILLE, VA 22902-0735
PO BOX 736, CHARLOTTESVILLE, VA 22902-0736
PO BOX 737, CHARLOTTESVILLE, VA 22902-0737
PO BOX 738, CHARLOTTESVILLE, VA 22902-0738
PO BOX 739, CHARLOTTESVILLE, VA 22902-0739
PO BOX 740, CHARLOTTESVILLE, VA 22902-0740
PO BOX 741, CHARLOTTESVILLE, VA 22902-0741
PO BOX 742, CHARLOTTESVILLE, VA 22902-0742
PO BOX 743, CHARLOTTESVILLE, VA 22902-0743
PO BOX 744, CHARLOTTESVILLE, VA 22902-0744
PO BOX 745, CHARLOTTESVILLE, VA 22902-0745
PO BOX 746, CHARLOTTESVILLE, VA 22902-0746
PO BOX 747, CHARLOTTESVILLE, VA 22902-0747
PO BOX 748, CHARLOTTESVILLE, VA 22902-0748
PO BOX 749, CHARLOTTESVILLE, VA 22902-0749
PO BOX 750, CHARLOTTESVILLE, VA 22902-0750
PO BOX 751, CHARLOTTESVILLE, VA 22902-0751
PO BOX 752, CHARLOTTESVILLE, VA 22902-0752
PO BOX 753, CHARLOTTESVILLE, VA 22902-0753
PO BOX 754, CHARLOTTESVILLE, VA 22902-0754
PO BOX 755, CHARLOTTESVILLE, VA 22902-0755
PO BOX 756, CHARLOTTESVILLE, VA 22902-0756
PO BOX 757, CHARLOTTESVILLE, VA 22902-0757
PO BOX 758, CHARLOTTESVILLE, VA 22902-0758
PO BOX 759, CHARLOTTESVILLE, VA 22902-0759
PO BOX 760, CHARLOTTESVILLE, VA 22902-0760
PO BOX 761, CHARLOTTESVILLE, VA 22902-0761
PO BOX 762, CHARLOTTESVILLE, VA 22902-0762
PO BOX 763, CHARLOTTESVILLE, VA 22902-0763
PO BOX 764, CHARLOTTESVILLE, VA 22902-0764
PO BOX 765, CHARLOTTESVILLE, VA 22902-0765
PO BOX 766, CHARLOTTESVILLE, VA 22902-0766
PO BOX 767, CHARLOTTESVILLE, VA 22902-0767
PO BOX 768, CHARLOTTESVILLE, VA 22902-0768
PO BOX 769, CHARLOTTESVILLE, VA 22902-0769
PO BOX 770, CHARLOTTESVILLE, VA 22902-0770
PO BOX 771, CHARLOTTESVILLE, VA 22902-0771
PO BOX 772, CHARLOTTESVILLE, VA 22902-0772
PO BOX 773, CHARLOTTESVILLE, VA 22902-0773
PO BOX 774, CHARLOTTESVILLE, VA 22902-0774
PO BOX 775, CHARLOTTESVILLE, VA 22902-0775
PO BOX 776, CHARLOTTESVILLE, VA 22902-0776
PO BOX 777, CHARLOTTESVILLE, VA 22902-0777
PO BOX 778, CHARLOTTESVILLE, VA 22902-0778
PO BOX 779, CHARLOTTESVILLE, VA 22902-0779
PO BOX 780, CHARLOTTESVILLE, VA 22902-0780
PO BOX 781, CHARLOTTESVILLE, VA 22902-0781
PO BOX 782, CHARLOTTESVILLE, VA 22902-0782
PO BOX 783, CHARLOTTESVILLE, VA 22902-0783
PO BOX 784, CHARLOTTESVILLE, VA 22902-0784
PO BOX 785, CHARLOTTESVILLE, VA 22902-0785
PO BOX 786, CHARLOTTESVILLE, VA 22902-0786
PO BOX 787, CHARLOTTESVILLE, VA 22902-0787
PO BOX 788, CHARLOTTESVILLE, VA 22902-0788
PO BOX 789, CHARLOTTESVILLE, VA 22902-0789
PO BOX 790, CHARLOTTESVILLE, VA 22902-0790
PO BOX 791, CHARLOTTESVILLE, VA 22902-0791
PO BOX 792, CHARLOTTESVILLE, VA 22902-0792
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