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 667, SPARTANBURG, SC 29304-0667
PO BOX 668, SPARTANBURG, SC 29304-0668
PO BOX 669, SPARTANBURG, SC 29304-0669
PO BOX 670, SPARTANBURG, SC 29304-0670
PO BOX 671, SPARTANBURG, SC 29304-0671
PO BOX 672, SPARTANBURG, SC 29304-0672
PO BOX 673, SPARTANBURG, SC 29304-0673
PO BOX 674, SPARTANBURG, SC 29304-0674
PO BOX 675, SPARTANBURG, SC 29304-0675
PO BOX 676, SPARTANBURG, SC 29304-0676
PO BOX 677, SPARTANBURG, SC 29304-0677
PO BOX 678, SPARTANBURG, SC 29304-0678
PO BOX 679, SPARTANBURG, SC 29304-0679
PO BOX 680, SPARTANBURG, SC 29304-0680
PO BOX 681, SPARTANBURG, SC 29304-0681
PO BOX 682, SPARTANBURG, SC 29304-0682
PO BOX 683, SPARTANBURG, SC 29304-0683
PO BOX 684, SPARTANBURG, SC 29304-0684
PO BOX 685, SPARTANBURG, SC 29304-0685
PO BOX 686, SPARTANBURG, SC 29304-0686
PO BOX 687, SPARTANBURG, SC 29304-0687
PO BOX 688, SPARTANBURG, SC 29304-0688
PO BOX 689, SPARTANBURG, SC 29304-0689
PO BOX 690, SPARTANBURG, SC 29304-0690
PO BOX 691, SPARTANBURG, SC 29304-0691
PO BOX 692, SPARTANBURG, SC 29304-0692
PO BOX 693, SPARTANBURG, SC 29304-0693
PO BOX 694, SPARTANBURG, SC 29304-0694
PO BOX 695, SPARTANBURG, SC 29304-0695
PO BOX 696, SPARTANBURG, SC 29304-0696
PO BOX 697, SPARTANBURG, SC 29304-0697
PO BOX 698, SPARTANBURG, SC 29304-0698
PO BOX 699, SPARTANBURG, SC 29304-0699
PO BOX 700, SPARTANBURG, SC 29304-0700
PO BOX 701, SPARTANBURG, SC 29304-0701
PO BOX 702, SPARTANBURG, SC 29304-0702
PO BOX 703, SPARTANBURG, SC 29304-0703
PO BOX 704, SPARTANBURG, SC 29304-0704
PO BOX 705, SPARTANBURG, SC 29304-0705
PO BOX 706, SPARTANBURG, SC 29304-0706
PO BOX 707, SPARTANBURG, SC 29304-0707
PO BOX 708, SPARTANBURG, SC 29304-0708
PO BOX 709, SPARTANBURG, SC 29304-0709
PO BOX 710, SPARTANBURG, SC 29304-0710
PO BOX 711, SPARTANBURG, SC 29304-0711
PO BOX 712, SPARTANBURG, SC 29304-0712
PO BOX 713, SPARTANBURG, SC 29304-0713
PO BOX 714, SPARTANBURG, SC 29304-0714
PO BOX 715, SPARTANBURG, SC 29304-0715
PO BOX 716, SPARTANBURG, SC 29304-0716
PO BOX 717, SPARTANBURG, SC 29304-0717
PO BOX 718, SPARTANBURG, SC 29304-0718
PO BOX 719, SPARTANBURG, SC 29304-0719
PO BOX 720, SPARTANBURG, SC 29304-0720
PO BOX 721, SPARTANBURG, SC 29304-0721
PO BOX 722, SPARTANBURG, SC 29304-0722
PO BOX 723, SPARTANBURG, SC 29304-0723
PO BOX 724, SPARTANBURG, SC 29304-0724
PO BOX 725, SPARTANBURG, SC 29304-0725
PO BOX 726, SPARTANBURG, SC 29304-0726
PO BOX 727, SPARTANBURG, SC 29304-0727
PO BOX 728, SPARTANBURG, SC 29304-0728
PO BOX 729, SPARTANBURG, SC 29304-0729
PO BOX 730, SPARTANBURG, SC 29304-0730
PO BOX 731, SPARTANBURG, SC 29304-0731
PO BOX 732, SPARTANBURG, SC 29304-0732
PO BOX 733, SPARTANBURG, SC 29304-0733
PO BOX 734, SPARTANBURG, SC 29304-0734
PO BOX 735, SPARTANBURG, SC 29304-0735
PO BOX 736, SPARTANBURG, SC 29304-0736
PO BOX 737, SPARTANBURG, SC 29304-0737
PO BOX 738, SPARTANBURG, SC 29304-0738
PO BOX 739, SPARTANBURG, SC 29304-0739
PO BOX 740, SPARTANBURG, SC 29304-0740
PO BOX 741, SPARTANBURG, SC 29304-0741
PO BOX 742, SPARTANBURG, SC 29304-0742
PO BOX 743, SPARTANBURG, SC 29304-0743
PO BOX 744, SPARTANBURG, SC 29304-0744
PO BOX 745, SPARTANBURG, SC 29304-0745
PO BOX 746, SPARTANBURG, SC 29304-0746
PO BOX 747, SPARTANBURG, SC 29304-0747
PO BOX 748, SPARTANBURG, SC 29304-0748
PO BOX 749, SPARTANBURG, SC 29304-0749
PO BOX 750, SPARTANBURG, SC 29304-0750
PO BOX 751, SPARTANBURG, SC 29304-0751
PO BOX 752, SPARTANBURG, SC 29304-0752
PO BOX 753, SPARTANBURG, SC 29304-0753
PO BOX 754, SPARTANBURG, SC 29304-0754
PO BOX 755, SPARTANBURG, SC 29304-0755
PO BOX 756, SPARTANBURG, SC 29304-0756
PO BOX 757, SPARTANBURG, SC 29304-0757
PO BOX 758, SPARTANBURG, SC 29304-0758
PO BOX 759, SPARTANBURG, SC 29304-0759
PO BOX 760, SPARTANBURG, SC 29304-0760
PO BOX 761, SPARTANBURG, SC 29304-0761
PO BOX 762, SPARTANBURG, SC 29304-0762
PO BOX 763, SPARTANBURG, SC 29304-0763
PO BOX 764, SPARTANBURG, SC 29304-0764
PO BOX 765, SPARTANBURG, SC 29304-0765
PO BOX 766, SPARTANBURG, SC 29304-0766
PO BOX 767, SPARTANBURG, SC 29304-0767
PO BOX 768, SPARTANBURG, SC 29304-0768
PO BOX 769, SPARTANBURG, SC 29304-0769
PO BOX 770, SPARTANBURG, SC 29304-0770
PO BOX 771, SPARTANBURG, SC 29304-0771
PO BOX 772, SPARTANBURG, SC 29304-0772
PO BOX 773, SPARTANBURG, SC 29304-0773
PO BOX 774, SPARTANBURG, SC 29304-0774
PO BOX 775, SPARTANBURG, SC 29304-0775
PO BOX 776, SPARTANBURG, SC 29304-0776
PO BOX 777, SPARTANBURG, SC 29304-0777
PO BOX 778, SPARTANBURG, SC 29304-0778
PO BOX 779, SPARTANBURG, SC 29304-0779
PO BOX 780, SPARTANBURG, SC 29304-0780
PO BOX 781, SPARTANBURG, SC 29304-0781
PO BOX 782, SPARTANBURG, SC 29304-0782
PO BOX 783, SPARTANBURG, SC 29304-0783
PO BOX 784, SPARTANBURG, SC 29304-0784
PO BOX 785, SPARTANBURG, SC 29304-0785
PO BOX 786, SPARTANBURG, SC 29304-0786
PO BOX 787, SPARTANBURG, SC 29304-0787
PO BOX 788, SPARTANBURG, SC 29304-0788
PO BOX 789, SPARTANBURG, SC 29304-0789
PO BOX 790, SPARTANBURG, SC 29304-0790
PO BOX 791, SPARTANBURG, SC 29304-0791
PO BOX 792, SPARTANBURG, SC 29304-0792
PO BOX 793, SPARTANBURG, SC 29304-0793
PO BOX 794, SPARTANBURG, SC 29304-0794
PO BOX 795, SPARTANBURG, SC 29304-0795
PO BOX 796, SPARTANBURG, SC 29304-0796
PO BOX 797, SPARTANBURG, SC 29304-0797
PO BOX 798, SPARTANBURG, SC 29304-0798
PO BOX 799, SPARTANBURG, SC 29304-0799
PO BOX 800, SPARTANBURG, SC 29304-0800
PO BOX 801, SPARTANBURG, SC 29304-0801
PO BOX 802, SPARTANBURG, SC 29304-0802
PO BOX 803, SPARTANBURG, SC 29304-0803
PO BOX 804, SPARTANBURG, SC 29304-0804
PO BOX 805, SPARTANBURG, SC 29304-0805
PO BOX 806, SPARTANBURG, SC 29304-0806
PO BOX 807, SPARTANBURG, SC 29304-0807
PO BOX 808, SPARTANBURG, SC 29304-0808
PO BOX 809, SPARTANBURG, SC 29304-0809
PO BOX 810, SPARTANBURG, SC 29304-0810
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