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 929599, COLUMBIA, SC 29292-9599
PO BOX 929600, COLUMBIA, SC 29292-9600
PO BOX 929601, COLUMBIA, SC 29292-9601
PO BOX 929602, COLUMBIA, SC 29292-9602
PO BOX 929603, COLUMBIA, SC 29292-9603
PO BOX 929604, COLUMBIA, SC 29292-9604
PO BOX 929605, COLUMBIA, SC 29292-9605
PO BOX 929606, COLUMBIA, SC 29292-9606
PO BOX 929607, COLUMBIA, SC 29292-9607
PO BOX 929608, COLUMBIA, SC 29292-9608
PO BOX 929609, COLUMBIA, SC 29292-9609
PO BOX 929610, COLUMBIA, SC 29292-9610
PO BOX 929611, COLUMBIA, SC 29292-9611
PO BOX 929612, COLUMBIA, SC 29292-9612
PO BOX 929613, COLUMBIA, SC 29292-9613
PO BOX 929614, COLUMBIA, SC 29292-9614
PO BOX 929615, COLUMBIA, SC 29292-9615
PO BOX 929616, COLUMBIA, SC 29292-9616
PO BOX 929617, COLUMBIA, SC 29292-9617
PO BOX 929618, COLUMBIA, SC 29292-9618
PO BOX 929619, COLUMBIA, SC 29292-9619
PO BOX 929620, COLUMBIA, SC 29292-9620
PO BOX 929621, COLUMBIA, SC 29292-9621
PO BOX 929622, COLUMBIA, SC 29292-9622
PO BOX 929623, COLUMBIA, SC 29292-9623
PO BOX 929624, COLUMBIA, SC 29292-9624
PO BOX 929625, COLUMBIA, SC 29292-9625
PO BOX 929626, COLUMBIA, SC 29292-9626
PO BOX 929627, COLUMBIA, SC 29292-9627
PO BOX 929628, COLUMBIA, SC 29292-9628
PO BOX 929629, COLUMBIA, SC 29292-9629
PO BOX 929630, COLUMBIA, SC 29292-9630
PO BOX 929631, COLUMBIA, SC 29292-9631
PO BOX 929632, COLUMBIA, SC 29292-9632
PO BOX 929633, COLUMBIA, SC 29292-9633
PO BOX 929634, COLUMBIA, SC 29292-9634
PO BOX 929635, COLUMBIA, SC 29292-9635
PO BOX 929636, COLUMBIA, SC 29292-9636
PO BOX 929637, COLUMBIA, SC 29292-9637
PO BOX 929638, COLUMBIA, SC 29292-9638
PO BOX 929639, COLUMBIA, SC 29292-9639
PO BOX 929640, COLUMBIA, SC 29292-9640
PO BOX 929641, COLUMBIA, SC 29292-9641
PO BOX 929642, COLUMBIA, SC 29292-9642
PO BOX 929643, COLUMBIA, SC 29292-9643
PO BOX 929644, COLUMBIA, SC 29292-9644
PO BOX 929645, COLUMBIA, SC 29292-9645
PO BOX 929646, COLUMBIA, SC 29292-9646
PO BOX 929647, COLUMBIA, SC 29292-9647
PO BOX 929648, COLUMBIA, SC 29292-9648
PO BOX 929649, COLUMBIA, SC 29292-9649
PO BOX 929650, COLUMBIA, SC 29292-9650
PO BOX 929651, COLUMBIA, SC 29292-9651
PO BOX 929652, COLUMBIA, SC 29292-9652
PO BOX 929653, COLUMBIA, SC 29292-9653
PO BOX 929654, COLUMBIA, SC 29292-9654
PO BOX 929655, COLUMBIA, SC 29292-9655
PO BOX 929656, COLUMBIA, SC 29292-9656
PO BOX 929657, COLUMBIA, SC 29292-9657
PO BOX 929658, COLUMBIA, SC 29292-9658
PO BOX 929659, COLUMBIA, SC 29292-9659
PO BOX 929660, COLUMBIA, SC 29292-9660
PO BOX 929661, COLUMBIA, SC 29292-9661
PO BOX 929662, COLUMBIA, SC 29292-9662
PO BOX 929663, COLUMBIA, SC 29292-9663
PO BOX 929664, COLUMBIA, SC 29292-9664
PO BOX 929665, COLUMBIA, SC 29292-9665
PO BOX 929666, COLUMBIA, SC 29292-9666
PO BOX 929667, COLUMBIA, SC 29292-9667
PO BOX 929668, COLUMBIA, SC 29292-9668
PO BOX 929669, COLUMBIA, SC 29292-9669
PO BOX 929670, COLUMBIA, SC 29292-9670
PO BOX 929671, COLUMBIA, SC 29292-9671
PO BOX 929672, COLUMBIA, SC 29292-9672
PO BOX 929673, COLUMBIA, SC 29292-9673
PO BOX 929674, COLUMBIA, SC 29292-9674
PO BOX 929675, COLUMBIA, SC 29292-9675
PO BOX 929676, COLUMBIA, SC 29292-9676
PO BOX 929677, COLUMBIA, SC 29292-9677
PO BOX 929678, COLUMBIA, SC 29292-9678
PO BOX 929679, COLUMBIA, SC 29292-9679
PO BOX 929680, COLUMBIA, SC 29292-9680
PO BOX 929681, COLUMBIA, SC 29292-9681
PO BOX 929682, COLUMBIA, SC 29292-9682
PO BOX 929683, COLUMBIA, SC 29292-9683
PO BOX 929684, COLUMBIA, SC 29292-9684
PO BOX 929685, COLUMBIA, SC 29292-9685
PO BOX 929686, COLUMBIA, SC 29292-9686
PO BOX 929687, COLUMBIA, SC 29292-9687
PO BOX 929688, COLUMBIA, SC 29292-9688
PO BOX 929689, COLUMBIA, SC 29292-9689
PO BOX 929690, COLUMBIA, SC 29292-9690
PO BOX 929691, COLUMBIA, SC 29292-9691
PO BOX 929692, COLUMBIA, SC 29292-9692
PO BOX 929693, COLUMBIA, SC 29292-9693
PO BOX 929694, COLUMBIA, SC 29292-9694
PO BOX 929695, COLUMBIA, SC 29292-9695
PO BOX 929696, COLUMBIA, SC 29292-9696
PO BOX 929697, COLUMBIA, SC 29292-9697
PO BOX 929698, COLUMBIA, SC 29292-9698
PO BOX 929699, COLUMBIA, SC 29292-9699
PO BOX 929700, COLUMBIA, SC 29292-9700
PO BOX 929701, COLUMBIA, SC 29292-9701
PO BOX 929702, COLUMBIA, SC 29292-9702
PO BOX 929703, COLUMBIA, SC 29292-9703
PO BOX 929704, COLUMBIA, SC 29292-9704
PO BOX 929705, COLUMBIA, SC 29292-9705
PO BOX 929706, COLUMBIA, SC 29292-9706
PO BOX 929707, COLUMBIA, SC 29292-9707
PO BOX 929708, COLUMBIA, SC 29292-9708
PO BOX 929709, COLUMBIA, SC 29292-9709
PO BOX 929710, COLUMBIA, SC 29292-9710
PO BOX 929711, COLUMBIA, SC 29292-9711
PO BOX 929712, COLUMBIA, SC 29292-9712
PO BOX 929713, COLUMBIA, SC 29292-9713
PO BOX 929714, COLUMBIA, SC 29292-9714
PO BOX 929715, COLUMBIA, SC 29292-9715
PO BOX 929716, COLUMBIA, SC 29292-9716
PO BOX 929717, COLUMBIA, SC 29292-9717
PO BOX 929718, COLUMBIA, SC 29292-9718
PO BOX 929719, COLUMBIA, SC 29292-9719
PO BOX 929720, COLUMBIA, SC 29292-9720
PO BOX 929721, COLUMBIA, SC 29292-9721
PO BOX 929722, COLUMBIA, SC 29292-9722
PO BOX 929723, COLUMBIA, SC 29292-9723
PO BOX 929724, COLUMBIA, SC 29292-9724
PO BOX 929725, COLUMBIA, SC 29292-9725
PO BOX 929726, COLUMBIA, SC 29292-9726
PO BOX 929727, COLUMBIA, SC 29292-9727
PO BOX 929728, COLUMBIA, SC 29292-9728
PO BOX 929729, COLUMBIA, SC 29292-9729
PO BOX 929730, COLUMBIA, SC 29292-9730
PO BOX 929731, COLUMBIA, SC 29292-9731
PO BOX 929732, COLUMBIA, SC 29292-9732
PO BOX 929733, COLUMBIA, SC 29292-9733
PO BOX 929734, COLUMBIA, SC 29292-9734
PO BOX 929735, COLUMBIA, SC 29292-9735
PO BOX 929736, COLUMBIA, SC 29292-9736
PO BOX 929737, COLUMBIA, SC 29292-9737
PO BOX 929738, COLUMBIA, SC 29292-9738
PO BOX 929739, COLUMBIA, SC 29292-9739
PO BOX 929740, COLUMBIA, SC 29292-9740
PO BOX 929741, COLUMBIA, SC 29292-9741
PO BOX 929742, COLUMBIA, SC 29292-9742
PO BOX 929743, COLUMBIA, SC 29292-9743
PO BOX 929744, COLUMBIA, SC 29292-9744
PO BOX 929745, COLUMBIA, SC 29292-9745
PO BOX 929746, COLUMBIA, SC 29292-9746
PO BOX 929747, COLUMBIA, SC 29292-9747
PO BOX 929748, COLUMBIA, SC 29292-9748
PO BOX 929749, COLUMBIA, SC 29292-9749
PO BOX 929750, COLUMBIA, SC 29292-9750
PO BOX 929751, COLUMBIA, SC 29292-9751
PO BOX 929752, COLUMBIA, SC 29292-9752
PO BOX 929753, COLUMBIA, SC 29292-9753
PO BOX 929754, COLUMBIA, SC 29292-9754
PO BOX 929755, COLUMBIA, SC 29292-9755
PO BOX 929756, COLUMBIA, SC 29292-9756
PO BOX 929757, COLUMBIA, SC 29292-9757
PO BOX 929758, COLUMBIA, SC 29292-9758
PO BOX 929759, COLUMBIA, SC 29292-9759
PO BOX 929760, COLUMBIA, SC 29292-9760
PO BOX 929761, COLUMBIA, SC 29292-9761
PO BOX 929762, COLUMBIA, SC 29292-9762
PO BOX 929763, COLUMBIA, SC 29292-9763
PO BOX 929764, COLUMBIA, SC 29292-9764
PO BOX 929765, COLUMBIA, SC 29292-9765
PO BOX 929766, COLUMBIA, SC 29292-9766
PO BOX 929767, COLUMBIA, SC 29292-9767
PO BOX 929768, COLUMBIA, SC 29292-9768
PO BOX 929769, COLUMBIA, SC 29292-9769
PO BOX 929770, COLUMBIA, SC 29292-9770
PO BOX 929771, COLUMBIA, SC 29292-9771
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