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 560481, CHARLOTTE, NC 28256-0481
PO BOX 560482, CHARLOTTE, NC 28256-0482
PO BOX 560483, CHARLOTTE, NC 28256-0483
PO BOX 560484, CHARLOTTE, NC 28256-0484
PO BOX 560485, CHARLOTTE, NC 28256-0485
PO BOX 560486, CHARLOTTE, NC 28256-0486
PO BOX 560487, CHARLOTTE, NC 28256-0487
PO BOX 560488, CHARLOTTE, NC 28256-0488
PO BOX 560489, CHARLOTTE, NC 28256-0489
PO BOX 560490, CHARLOTTE, NC 28256-0490
PO BOX 560491, CHARLOTTE, NC 28256-0491
PO BOX 560492, CHARLOTTE, NC 28256-0492
PO BOX 560493, CHARLOTTE, NC 28256-0493
PO BOX 560494, CHARLOTTE, NC 28256-0494
PO BOX 560495, CHARLOTTE, NC 28256-0495
PO BOX 560496, CHARLOTTE, NC 28256-0496
PO BOX 560497, CHARLOTTE, NC 28256-0497
PO BOX 560498, CHARLOTTE, NC 28256-0498
PO BOX 560499, CHARLOTTE, NC 28256-0499
PO BOX 560500, CHARLOTTE, NC 28256-0500
PO BOX 560501, CHARLOTTE, NC 28256-0501
PO BOX 560502, CHARLOTTE, NC 28256-0502
PO BOX 560503, CHARLOTTE, NC 28256-0503
PO BOX 560504, CHARLOTTE, NC 28256-0504
PO BOX 560505, CHARLOTTE, NC 28256-0505
PO BOX 560506, CHARLOTTE, NC 28256-0506
PO BOX 560507, CHARLOTTE, NC 28256-0507
PO BOX 560508, CHARLOTTE, NC 28256-0508
PO BOX 560509, CHARLOTTE, NC 28256-0509
PO BOX 560510, CHARLOTTE, NC 28256-0510
PO BOX 560511, CHARLOTTE, NC 28256-0511
PO BOX 560512, CHARLOTTE, NC 28256-0512
PO BOX 560513, CHARLOTTE, NC 28256-0513
PO BOX 560514, CHARLOTTE, NC 28256-0514
PO BOX 560515, CHARLOTTE, NC 28256-0515
PO BOX 560516, CHARLOTTE, NC 28256-0516
PO BOX 560517, CHARLOTTE, NC 28256-0517
PO BOX 560518, CHARLOTTE, NC 28256-0518
PO BOX 560519, CHARLOTTE, NC 28256-0519
PO BOX 560520, CHARLOTTE, NC 28256-0520
PO BOX 560521, CHARLOTTE, NC 28256-0521
PO BOX 560522, CHARLOTTE, NC 28256-0522
PO BOX 560523, CHARLOTTE, NC 28256-0523
PO BOX 560524, CHARLOTTE, NC 28256-0524
PO BOX 560525, CHARLOTTE, NC 28256-0525
PO BOX 560526, CHARLOTTE, NC 28256-0526
PO BOX 560527, CHARLOTTE, NC 28256-0527
PO BOX 560528, CHARLOTTE, NC 28256-0528
PO BOX 560529, CHARLOTTE, NC 28256-0529
PO BOX 560530, CHARLOTTE, NC 28256-0530
PO BOX 560531, CHARLOTTE, NC 28256-0531
PO BOX 560532, CHARLOTTE, NC 28256-0532
PO BOX 560533, CHARLOTTE, NC 28256-0533
PO BOX 560534, CHARLOTTE, NC 28256-0534
PO BOX 560535, CHARLOTTE, NC 28256-0535
PO BOX 560536, CHARLOTTE, NC 28256-0536
PO BOX 560537, CHARLOTTE, NC 28256-0537
PO BOX 560538, CHARLOTTE, NC 28256-0538
PO BOX 560539, CHARLOTTE, NC 28256-0539
PO BOX 560540, CHARLOTTE, NC 28256-0540
PO BOX 560541, CHARLOTTE, NC 28256-0541
PO BOX 560542, CHARLOTTE, NC 28256-0542
PO BOX 560543, CHARLOTTE, NC 28256-0543
PO BOX 560544, CHARLOTTE, NC 28256-0544
PO BOX 560545, CHARLOTTE, NC 28256-0545
PO BOX 560546, CHARLOTTE, NC 28256-0546
PO BOX 560547, CHARLOTTE, NC 28256-0547
PO BOX 560548, CHARLOTTE, NC 28256-0548
PO BOX 560549, CHARLOTTE, NC 28256-0549
PO BOX 560550, CHARLOTTE, NC 28256-0550
PO BOX 560551, CHARLOTTE, NC 28256-0551
PO BOX 560552, CHARLOTTE, NC 28256-0552
PO BOX 560553, CHARLOTTE, NC 28256-0553
PO BOX 560554, CHARLOTTE, NC 28256-0554
PO BOX 560555, CHARLOTTE, NC 28256-0555
PO BOX 560556, CHARLOTTE, NC 28256-0556
PO BOX 560557, CHARLOTTE, NC 28256-0557
PO BOX 560558, CHARLOTTE, NC 28256-0558
PO BOX 560559, CHARLOTTE, NC 28256-0559
PO BOX 560560, CHARLOTTE, NC 28256-0560
PO BOX 560561, CHARLOTTE, NC 28256-0561
PO BOX 560562, CHARLOTTE, NC 28256-0562
PO BOX 560563, CHARLOTTE, NC 28256-0563
PO BOX 560564, CHARLOTTE, NC 28256-0564
PO BOX 560565, CHARLOTTE, NC 28256-0565
PO BOX 560566, CHARLOTTE, NC 28256-0566
PO BOX 560567, CHARLOTTE, NC 28256-0567
PO BOX 560568, CHARLOTTE, NC 28256-0568
PO BOX 560569, CHARLOTTE, NC 28256-0569
PO BOX 560570, CHARLOTTE, NC 28256-0570
PO BOX 560571, CHARLOTTE, NC 28256-0571
PO BOX 560572, CHARLOTTE, NC 28256-0572
PO BOX 560573, CHARLOTTE, NC 28256-0573
PO BOX 560574, CHARLOTTE, NC 28256-0574
PO BOX 560575, CHARLOTTE, NC 28256-0575
PO BOX 560576, CHARLOTTE, NC 28256-0576
PO BOX 560577, CHARLOTTE, NC 28256-0577
PO BOX 560578, CHARLOTTE, NC 28256-0578
PO BOX 560579, CHARLOTTE, NC 28256-0579
PO BOX 560580, CHARLOTTE, NC 28256-0580
PO BOX 560581, CHARLOTTE, NC 28256-0581
PO BOX 560582, CHARLOTTE, NC 28256-0582
PO BOX 560583, CHARLOTTE, NC 28256-0583
PO BOX 560584, CHARLOTTE, NC 28256-0584
PO BOX 560585, CHARLOTTE, NC 28256-0585
PO BOX 560586, CHARLOTTE, NC 28256-0586
PO BOX 560587, CHARLOTTE, NC 28256-0587
PO BOX 560588, CHARLOTTE, NC 28256-0588
PO BOX 560589, CHARLOTTE, NC 28256-0589
PO BOX 560590, CHARLOTTE, NC 28256-0590
PO BOX 560591, CHARLOTTE, NC 28256-0591
PO BOX 560592, CHARLOTTE, NC 28256-0592
PO BOX 560593, CHARLOTTE, NC 28256-0593
PO BOX 560594, CHARLOTTE, NC 28256-0594
PO BOX 560595, CHARLOTTE, NC 28256-0595
PO BOX 560596, CHARLOTTE, NC 28256-0596
PO BOX 560597, CHARLOTTE, NC 28256-0597
PO BOX 560598, CHARLOTTE, NC 28256-0598
PO BOX 560599, CHARLOTTE, NC 28256-0599
PO BOX 560600, CHARLOTTE, NC 28256-0600
PO BOX 560601, CHARLOTTE, NC 28256-0601
PO BOX 560602, CHARLOTTE, NC 28256-0602
PO BOX 560603, CHARLOTTE, NC 28256-0603
PO BOX 560604, CHARLOTTE, NC 28256-0604
PO BOX 560605, CHARLOTTE, NC 28256-0605
PO BOX 560606, CHARLOTTE, NC 28256-0606
PO BOX 560607, CHARLOTTE, NC 28256-0607
PO BOX 560608, CHARLOTTE, NC 28256-0608
PO BOX 560609, CHARLOTTE, NC 28256-0609
PO BOX 560610, CHARLOTTE, NC 28256-0610
PO BOX 560611, CHARLOTTE, NC 28256-0611
PO BOX 560612, CHARLOTTE, NC 28256-0612
PO BOX 560613, CHARLOTTE, NC 28256-0613
PO BOX 560614, CHARLOTTE, NC 28256-0614
PO BOX 560615, CHARLOTTE, NC 28256-0615
PO BOX 560616, CHARLOTTE, NC 28256-0616
PO BOX 560617, CHARLOTTE, NC 28256-0617
PO BOX 560618, CHARLOTTE, NC 28256-0618
PO BOX 560619, CHARLOTTE, NC 28256-0619
PO BOX 560620, CHARLOTTE, NC 28256-0620
PO BOX 560621, CHARLOTTE, NC 28256-0621
PO BOX 560622, CHARLOTTE, NC 28256-0622
PO BOX 560623, CHARLOTTE, NC 28256-0623
PO BOX 560624, CHARLOTTE, NC 28256-0624
PO BOX 560625, CHARLOTTE, NC 28256-0625
PO BOX 560626, CHARLOTTE, NC 28256-0626
PO BOX 560627, CHARLOTTE, NC 28256-0627
PO BOX 560628, CHARLOTTE, NC 28256-0628
PO BOX 560629, CHARLOTTE, NC 28256-0629
PO BOX 560630, CHARLOTTE, NC 28256-0630
PO BOX 560631, CHARLOTTE, NC 28256-0631
PO BOX 560632, CHARLOTTE, NC 28256-0632
PO BOX 560633, CHARLOTTE, NC 28256-0633
PO BOX 560634, CHARLOTTE, NC 28256-0634
PO BOX 560635, CHARLOTTE, NC 28256-0635
PO BOX 560636, CHARLOTTE, NC 28256-0636
PO BOX 560637, CHARLOTTE, NC 28256-0637
PO BOX 560638, CHARLOTTE, NC 28256-0638
PO BOX 560639, CHARLOTTE, NC 28256-0639
PO BOX 560640, CHARLOTTE, NC 28256-0640
PO BOX 560641, CHARLOTTE, NC 28256-0641
PO BOX 560642, CHARLOTTE, NC 28256-0642
PO BOX 560643, CHARLOTTE, NC 28256-0643
PO BOX 560644, CHARLOTTE, NC 28256-0644
PO BOX 560645, CHARLOTTE, NC 28256-0645
PO BOX 560646, CHARLOTTE, NC 28256-0646
PO BOX 560647, CHARLOTTE, NC 28256-0647
PO BOX 560648, CHARLOTTE, NC 28256-0648
PO BOX 560649, CHARLOTTE, NC 28256-0649
PO BOX 560650, CHARLOTTE, NC 28256-0650
PO BOX 560651, CHARLOTTE, NC 28256-0651
PO BOX 560652, CHARLOTTE, NC 28256-0652
PO BOX 560653, CHARLOTTE, NC 28256-0653
PO BOX 560654, CHARLOTTE, NC 28256-0654
PO BOX 560655, CHARLOTTE, NC 28256-0655
PO BOX 560656, CHARLOTTE, NC 28256-0656
PO BOX 560657, CHARLOTTE, NC 28256-0657
PO BOX 560658, CHARLOTTE, NC 28256-0658
PO BOX 560659, CHARLOTTE, NC 28256-0659
PO BOX 560660, CHARLOTTE, NC 28256-0660
PO BOX 560661, CHARLOTTE, NC 28256-0661
PO BOX 560662, CHARLOTTE, NC 28256-0662
PO BOX 560663, CHARLOTTE, NC 28256-0663
PO BOX 560664, CHARLOTTE, NC 28256-0664
PO BOX 560665, CHARLOTTE, NC 28256-0665
PO BOX 560666, CHARLOTTE, NC 28256-0666
PO BOX 560667, CHARLOTTE, NC 28256-0667
PO BOX 560668, CHARLOTTE, NC 28256-0668
PO BOX 560669, CHARLOTTE, NC 28256-0669
PO BOX 560670, CHARLOTTE, NC 28256-0670
PO BOX 560671, CHARLOTTE, NC 28256-0671
PO BOX 560672, CHARLOTTE, NC 28256-0672
PO BOX 560673, CHARLOTTE, NC 28256-0673
PO BOX 560674, CHARLOTTE, NC 28256-0674
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