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 5541, DAVIDSON, NC 28035-5541
PO BOX 5542, DAVIDSON, NC 28035-5542
PO BOX 5543, DAVIDSON, NC 28035-5543
PO BOX 5544, DAVIDSON, NC 28035-5544
PO BOX 5545, DAVIDSON, NC 28035-5545
PO BOX 5546, DAVIDSON, NC 28035-5546
PO BOX 5547, DAVIDSON, NC 28035-5547
PO BOX 5548, DAVIDSON, NC 28035-5548
PO BOX 5549, DAVIDSON, NC 28035-5549
PO BOX 5550, DAVIDSON, NC 28035-5550
PO BOX 5551, DAVIDSON, NC 28035-5551
PO BOX 5552, DAVIDSON, NC 28035-5552
PO BOX 5553, DAVIDSON, NC 28035-5553
PO BOX 5554, DAVIDSON, NC 28035-5554
PO BOX 5555, DAVIDSON, NC 28035-5555
PO BOX 5556, DAVIDSON, NC 28035-5556
PO BOX 5557, DAVIDSON, NC 28035-5557
PO BOX 5558, DAVIDSON, NC 28035-5558
PO BOX 5559, DAVIDSON, NC 28035-5559
PO BOX 5560, DAVIDSON, NC 28035-5560
PO BOX 5561, DAVIDSON, NC 28035-5561
PO BOX 5562, DAVIDSON, NC 28035-5562
PO BOX 5563, DAVIDSON, NC 28035-5563
PO BOX 5564, DAVIDSON, NC 28035-5564
PO BOX 5565, DAVIDSON, NC 28035-5565
PO BOX 5566, DAVIDSON, NC 28035-5566
PO BOX 5567, DAVIDSON, NC 28035-5567
PO BOX 5568, DAVIDSON, NC 28035-5568
PO BOX 5569, DAVIDSON, NC 28035-5569
PO BOX 5570, DAVIDSON, NC 28035-5570
PO BOX 5571, DAVIDSON, NC 28035-5571
PO BOX 5572, DAVIDSON, NC 28035-5572
PO BOX 5573, DAVIDSON, NC 28035-5573
PO BOX 5574, DAVIDSON, NC 28035-5574
PO BOX 5575, DAVIDSON, NC 28035-5575
PO BOX 5576, DAVIDSON, NC 28035-5576
PO BOX 5577, DAVIDSON, NC 28035-5577
PO BOX 5578, DAVIDSON, NC 28035-5578
PO BOX 5579, DAVIDSON, NC 28035-5579
PO BOX 5580, DAVIDSON, NC 28035-5580
PO BOX 5581, DAVIDSON, NC 28035-5581
PO BOX 5582, DAVIDSON, NC 28035-5582
PO BOX 5583, DAVIDSON, NC 28035-5583
PO BOX 5584, DAVIDSON, NC 28035-5584
PO BOX 5585, DAVIDSON, NC 28035-5585
PO BOX 5586, DAVIDSON, NC 28035-5586
PO BOX 5587, DAVIDSON, NC 28035-5587
PO BOX 5588, DAVIDSON, NC 28035-5588
PO BOX 5589, DAVIDSON, NC 28035-5589
PO BOX 5590, DAVIDSON, NC 28035-5590
PO BOX 5591, DAVIDSON, NC 28035-5591
PO BOX 5592, DAVIDSON, NC 28035-5592
PO BOX 5593, DAVIDSON, NC 28035-5593
PO BOX 5594, DAVIDSON, NC 28035-5594
PO BOX 5595, DAVIDSON, NC 28035-5595
PO BOX 5596, DAVIDSON, NC 28035-5596
PO BOX 5597, DAVIDSON, NC 28035-5597
PO BOX 5598, DAVIDSON, NC 28035-5598
PO BOX 5599, DAVIDSON, NC 28035-5599
PO BOX 5600, DAVIDSON, NC 28035-5600
PO BOX 5601, DAVIDSON, NC 28035-5601
PO BOX 5602, DAVIDSON, NC 28035-5602
PO BOX 5603, DAVIDSON, NC 28035-5603
PO BOX 5604, DAVIDSON, NC 28035-5604
PO BOX 5605, DAVIDSON, NC 28035-5605
PO BOX 5606, DAVIDSON, NC 28035-5606
PO BOX 5607, DAVIDSON, NC 28035-5607
PO BOX 5608, DAVIDSON, NC 28035-5608
PO BOX 5609, DAVIDSON, NC 28035-5609
PO BOX 5610, DAVIDSON, NC 28035-5610
PO BOX 5611, DAVIDSON, NC 28035-5611
PO BOX 5612, DAVIDSON, NC 28035-5612
PO BOX 5613, DAVIDSON, NC 28035-5613
PO BOX 5614, DAVIDSON, NC 28035-5614
PO BOX 5615, DAVIDSON, NC 28035-5615
PO BOX 5616, DAVIDSON, NC 28035-5616
PO BOX 5617, DAVIDSON, NC 28035-5617
PO BOX 5618, DAVIDSON, NC 28035-5618
PO BOX 5619, DAVIDSON, NC 28035-5619
PO BOX 5620, DAVIDSON, NC 28035-5620
PO BOX 5621, DAVIDSON, NC 28035-5621
PO BOX 5622, DAVIDSON, NC 28035-5622
PO BOX 5623, DAVIDSON, NC 28035-5623
PO BOX 5624, DAVIDSON, NC 28035-5624
PO BOX 5625, DAVIDSON, NC 28035-5625
PO BOX 5626, DAVIDSON, NC 28035-5626
PO BOX 5627, DAVIDSON, NC 28035-5627
PO BOX 5628, DAVIDSON, NC 28035-5628
PO BOX 5629, DAVIDSON, NC 28035-5629
PO BOX 5630, DAVIDSON, NC 28035-5630
PO BOX 5631, DAVIDSON, NC 28035-5631
PO BOX 5632, DAVIDSON, NC 28035-5632
PO BOX 5633, DAVIDSON, NC 28035-5633
PO BOX 5634, DAVIDSON, NC 28035-5634
PO BOX 5635, DAVIDSON, NC 28035-5635
PO BOX 5636, DAVIDSON, NC 28035-5636
PO BOX 5637, DAVIDSON, NC 28035-5637
PO BOX 5638, DAVIDSON, NC 28035-5638
PO BOX 5639, DAVIDSON, NC 28035-5639
PO BOX 5640, DAVIDSON, NC 28035-5640
PO BOX 5641, DAVIDSON, NC 28035-5641
PO BOX 5642, DAVIDSON, NC 28035-5642
PO BOX 5643, DAVIDSON, NC 28035-5643
PO BOX 5644, DAVIDSON, NC 28035-5644
PO BOX 5645, DAVIDSON, NC 28035-5645
PO BOX 5646, DAVIDSON, NC 28035-5646
PO BOX 5647, DAVIDSON, NC 28035-5647
PO BOX 5648, DAVIDSON, NC 28035-5648
PO BOX 5649, DAVIDSON, NC 28035-5649
PO BOX 5650, DAVIDSON, NC 28035-5650
PO BOX 5651, DAVIDSON, NC 28035-5651
PO BOX 5652, DAVIDSON, NC 28035-5652
PO BOX 5653, DAVIDSON, NC 28035-5653
PO BOX 5654, DAVIDSON, NC 28035-5654
PO BOX 5655, DAVIDSON, NC 28035-5655
PO BOX 5656, DAVIDSON, NC 28035-5656
PO BOX 5657, DAVIDSON, NC 28035-5657
PO BOX 5658, DAVIDSON, NC 28035-5658
PO BOX 5659, DAVIDSON, NC 28035-5659
PO BOX 5660, DAVIDSON, NC 28035-5660
PO BOX 5661, DAVIDSON, NC 28035-5661
PO BOX 5662, DAVIDSON, NC 28035-5662
PO BOX 5663, DAVIDSON, NC 28035-5663
PO BOX 5664, DAVIDSON, NC 28035-5664
PO BOX 5665, DAVIDSON, NC 28035-5665
PO BOX 5666, DAVIDSON, NC 28035-5666
PO BOX 5667, DAVIDSON, NC 28035-5667
PO BOX 5668, DAVIDSON, NC 28035-5668
PO BOX 5669, DAVIDSON, NC 28035-5669
PO BOX 5670, DAVIDSON, NC 28035-5670
PO BOX 5671, DAVIDSON, NC 28035-5671
PO BOX 5672, DAVIDSON, NC 28035-5672
PO BOX 5673, DAVIDSON, NC 28035-5673
PO BOX 5674, DAVIDSON, NC 28035-5674
PO BOX 5675, DAVIDSON, NC 28035-5675
PO BOX 5676, DAVIDSON, NC 28035-5676
PO BOX 5677, DAVIDSON, NC 28035-5677
PO BOX 5678, DAVIDSON, NC 28035-5678
PO BOX 5679, DAVIDSON, NC 28035-5679
PO BOX 5680, DAVIDSON, NC 28035-5680
PO BOX 5681, DAVIDSON, NC 28035-5681
PO BOX 5682, DAVIDSON, NC 28035-5682
PO BOX 5683, DAVIDSON, NC 28035-5683
PO BOX 5684, DAVIDSON, NC 28035-5684
PO BOX 5685, DAVIDSON, NC 28035-5685
PO BOX 5686, DAVIDSON, NC 28035-5686
PO BOX 5687, DAVIDSON, NC 28035-5687
PO BOX 5688, DAVIDSON, NC 28035-5688
PO BOX 5689, DAVIDSON, NC 28035-5689
PO BOX 5690, DAVIDSON, NC 28035-5690
PO BOX 5691, DAVIDSON, NC 28035-5691
PO BOX 5692, DAVIDSON, NC 28035-5692
PO BOX 5693, DAVIDSON, NC 28035-5693
PO BOX 5694, DAVIDSON, NC 28035-5694
PO BOX 5695, DAVIDSON, NC 28035-5695
PO BOX 5696, DAVIDSON, NC 28035-5696
PO BOX 5697, DAVIDSON, NC 28035-5697
PO BOX 5698, DAVIDSON, NC 28035-5698
PO BOX 5699, DAVIDSON, NC 28035-5699
PO BOX 5700, DAVIDSON, NC 28035-5700
PO BOX 5701, DAVIDSON, NC 28035-5701
PO BOX 5702, DAVIDSON, NC 28035-5702
PO BOX 5703, DAVIDSON, NC 28035-5703
PO BOX 5704, DAVIDSON, NC 28035-5704
PO BOX 5705, DAVIDSON, NC 28035-5705
PO BOX 5706, DAVIDSON, NC 28035-5706
PO BOX 5707, DAVIDSON, NC 28035-5707
PO BOX 5708, DAVIDSON, NC 28035-5708
PO BOX 5709, DAVIDSON, NC 28035-5709
PO BOX 5710, DAVIDSON, NC 28035-5710
PO BOX 5711, DAVIDSON, NC 28035-5711
PO BOX 5712, DAVIDSON, NC 28035-5712
PO BOX 5713, DAVIDSON, NC 28035-5713
PO BOX 5714, DAVIDSON, NC 28035-5714
PO BOX 5715, DAVIDSON, NC 28035-5715
PO BOX 5716, DAVIDSON, NC 28035-5716
PO BOX 5717, DAVIDSON, NC 28035-5717
PO BOX 5718, DAVIDSON, NC 28035-5718
PO BOX 5719, DAVIDSON, NC 28035-5719
PO BOX 5720, DAVIDSON, NC 28035-5720
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