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 60409, CHARLOTTE, NC 28260-0409
PO BOX 60410, CHARLOTTE, NC 28260-0410
PO BOX 60411, CHARLOTTE, NC 28260-0411
PO BOX 60412, CHARLOTTE, NC 28260-0412
PO BOX 60413, CHARLOTTE, NC 28260-0413
PO BOX 60414, CHARLOTTE, NC 28260-0414
PO BOX 60415, CHARLOTTE, NC 28260-0415
PO BOX 60416, CHARLOTTE, NC 28260-0416
PO BOX 60417, CHARLOTTE, NC 28260-0417
PO BOX 60418, CHARLOTTE, NC 28260-0418
PO BOX 60419, CHARLOTTE, NC 28260-0419
PO BOX 60420, CHARLOTTE, NC 28260-0420
PO BOX 60421, CHARLOTTE, NC 28260-0421
PO BOX 60422, CHARLOTTE, NC 28260-0422
PO BOX 60423, CHARLOTTE, NC 28260-0423
PO BOX 60424, CHARLOTTE, NC 28260-0424
PO BOX 60425, CHARLOTTE, NC 28260-0425
PO BOX 60426, CHARLOTTE, NC 28260-0426
PO BOX 60427, CHARLOTTE, NC 28260-0427
PO BOX 60428, CHARLOTTE, NC 28260-0428
PO BOX 60429, CHARLOTTE, NC 28260-0429
PO BOX 60430, CHARLOTTE, NC 28260-0430
PO BOX 60431, CHARLOTTE, NC 28260-0431
PO BOX 60432, CHARLOTTE, NC 28260-0432
PO BOX 60433, CHARLOTTE, NC 28260-0433
PO BOX 60434, CHARLOTTE, NC 28260-0434
PO BOX 60435, CHARLOTTE, NC 28260-0435
PO BOX 60436, CHARLOTTE, NC 28260-0436
PO BOX 60437, CHARLOTTE, NC 28260-0437
PO BOX 60438, CHARLOTTE, NC 28260-0438
PO BOX 60439, CHARLOTTE, NC 28260-0439
PO BOX 60440, CHARLOTTE, NC 28260-0440
PO BOX 60441, CHARLOTTE, NC 28260-0441
PO BOX 60442, CHARLOTTE, NC 28260-0442
PO BOX 60443, CHARLOTTE, NC 28260-0443
PO BOX 60444, CHARLOTTE, NC 28260-0444
PO BOX 60445, CHARLOTTE, NC 28260-0445
PO BOX 60446, CHARLOTTE, NC 28260-0446
PO BOX 60447, CHARLOTTE, NC 28260-0447
PO BOX 60448, CHARLOTTE, NC 28260-0448
PO BOX 60449, CHARLOTTE, NC 28260-0449
PO BOX 60450, CHARLOTTE, NC 28260-0450
PO BOX 60451, CHARLOTTE, NC 28260-0451
PO BOX 60452, CHARLOTTE, NC 28260-0452
PO BOX 60453, CHARLOTTE, NC 28260-0453
PO BOX 60454, CHARLOTTE, NC 28260-0454
PO BOX 60455, CHARLOTTE, NC 28260-0455
PO BOX 60456, CHARLOTTE, NC 28260-0456
PO BOX 60457, CHARLOTTE, NC 28260-0457
PO BOX 60458, CHARLOTTE, NC 28260-0458
PO BOX 60459, CHARLOTTE, NC 28260-0459
PO BOX 60460, CHARLOTTE, NC 28260-0460
PO BOX 60461, CHARLOTTE, NC 28260-0461
PO BOX 60462, CHARLOTTE, NC 28260-0462
PO BOX 60463, CHARLOTTE, NC 28260-0463
PO BOX 60464, CHARLOTTE, NC 28260-0464
PO BOX 60465, CHARLOTTE, NC 28260-0465
PO BOX 60466, CHARLOTTE, NC 28260-0466
PO BOX 60467, CHARLOTTE, NC 28260-0467
PO BOX 60468, CHARLOTTE, NC 28260-0468
PO BOX 60469, CHARLOTTE, NC 28260-0469
PO BOX 60470, CHARLOTTE, NC 28260-0470
PO BOX 60471, CHARLOTTE, NC 28260-0471
PO BOX 60472, CHARLOTTE, NC 28260-0472
PO BOX 60473, CHARLOTTE, NC 28260-0473
PO BOX 60474, CHARLOTTE, NC 28260-0474
PO BOX 60475, CHARLOTTE, NC 28260-0475
PO BOX 60476, CHARLOTTE, NC 28260-0476
PO BOX 60477, CHARLOTTE, NC 28260-0477
PO BOX 60478, CHARLOTTE, NC 28260-0478
PO BOX 60479, CHARLOTTE, NC 28260-0479
PO BOX 60480, CHARLOTTE, NC 28260-0480
PO BOX 60481, CHARLOTTE, NC 28260-0481
PO BOX 60482, CHARLOTTE, NC 28260-0482
PO BOX 60483, CHARLOTTE, NC 28260-0483
PO BOX 60484, CHARLOTTE, NC 28260-0484
PO BOX 60485, CHARLOTTE, NC 28260-0485
PO BOX 60486, CHARLOTTE, NC 28260-0486
PO BOX 60487, CHARLOTTE, NC 28260-0487
PO BOX 60488, CHARLOTTE, NC 28260-0488
PO BOX 60489, CHARLOTTE, NC 28260-0489
PO BOX 60490, CHARLOTTE, NC 28260-0490
PO BOX 60491, CHARLOTTE, NC 28260-0491
PO BOX 60492, CHARLOTTE, NC 28260-0492
PO BOX 60493, CHARLOTTE, NC 28260-0493
PO BOX 60494, CHARLOTTE, NC 28260-0494
PO BOX 60495, CHARLOTTE, NC 28260-0495
PO BOX 60496, CHARLOTTE, NC 28260-0496
PO BOX 60497, CHARLOTTE, NC 28260-0497
PO BOX 60498, CHARLOTTE, NC 28260-0498
PO BOX 60499, CHARLOTTE, NC 28260-0499
PO BOX 60500, CHARLOTTE, NC 28260-0500
PO BOX 60501, CHARLOTTE, NC 28260-0501
PO BOX 60502, CHARLOTTE, NC 28260-0502
PO BOX 60503, CHARLOTTE, NC 28260-0503
PO BOX 60504, CHARLOTTE, NC 28260-0504
PO BOX 60505, CHARLOTTE, NC 28260-0505
PO BOX 60506, CHARLOTTE, NC 28260-0506
PO BOX 60507, CHARLOTTE, NC 28260-0507
PO BOX 60508, CHARLOTTE, NC 28260-0508
PO BOX 60509, CHARLOTTE, NC 28260-0509
PO BOX 60510, CHARLOTTE, NC 28260-0510
PO BOX 60511, CHARLOTTE, NC 28260-0511
PO BOX 60512, CHARLOTTE, NC 28260-0512
PO BOX 60513, CHARLOTTE, NC 28260-0513
PO BOX 60514, CHARLOTTE, NC 28260-0514
PO BOX 60515, CHARLOTTE, NC 28260-0515
PO BOX 60516, CHARLOTTE, NC 28260-0516
PO BOX 60517, CHARLOTTE, NC 28260-0517
PO BOX 60518, CHARLOTTE, NC 28260-0518
PO BOX 60519, CHARLOTTE, NC 28260-0519
PO BOX 60520, CHARLOTTE, NC 28260-0520
PO BOX 60521, CHARLOTTE, NC 28260-0521
PO BOX 60522, CHARLOTTE, NC 28260-0522
PO BOX 60523, CHARLOTTE, NC 28260-0523
PO BOX 60524, CHARLOTTE, NC 28260-0524
PO BOX 60525, CHARLOTTE, NC 28260-0525
PO BOX 60526, CHARLOTTE, NC 28260-0526
PO BOX 60527, CHARLOTTE, NC 28260-0527
PO BOX 60528, CHARLOTTE, NC 28260-0528
PO BOX 60529, CHARLOTTE, NC 28260-0529
PO BOX 60530, CHARLOTTE, NC 28260-0530
PO BOX 60531, CHARLOTTE, NC 28260-0531
PO BOX 60532, CHARLOTTE, NC 28260-0532
PO BOX 60533, CHARLOTTE, NC 28260-0533
PO BOX 60534, CHARLOTTE, NC 28260-0534
PO BOX 60535, CHARLOTTE, NC 28260-0535
PO BOX 60536, CHARLOTTE, NC 28260-0536
PO BOX 60537, CHARLOTTE, NC 28260-0537
PO BOX 60538, CHARLOTTE, NC 28260-0538
PO BOX 60539, CHARLOTTE, NC 28260-0539
PO BOX 60540, CHARLOTTE, NC 28260-0540
PO BOX 60541, CHARLOTTE, NC 28260-0541
PO BOX 60542, CHARLOTTE, NC 28260-0542
PO BOX 60543, CHARLOTTE, NC 28260-0543
PO BOX 60544, CHARLOTTE, NC 28260-0544
PO BOX 60545, CHARLOTTE, NC 28260-0545
PO BOX 60546, CHARLOTTE, NC 28260-0546
PO BOX 60547, CHARLOTTE, NC 28260-0547
PO BOX 60548, CHARLOTTE, NC 28260-0548
PO BOX 60549, CHARLOTTE, NC 28260-0549
PO BOX 60550, CHARLOTTE, NC 28260-0550
PO BOX 60551, CHARLOTTE, NC 28260-0551
PO BOX 60552, CHARLOTTE, NC 28260-0552
PO BOX 60553, CHARLOTTE, NC 28260-0553
PO BOX 60554, CHARLOTTE, NC 28260-0554
PO BOX 60555, CHARLOTTE, NC 28260-0555
PO BOX 60556, CHARLOTTE, NC 28260-0556
PO BOX 60557, CHARLOTTE, NC 28260-0557
PO BOX 60558, CHARLOTTE, NC 28260-0558
PO BOX 60559, CHARLOTTE, NC 28260-0559
PO BOX 60560, CHARLOTTE, NC 28260-0560
PO BOX 60561, CHARLOTTE, NC 28260-0561
PO BOX 60562, CHARLOTTE, NC 28260-0562
PO BOX 60563, CHARLOTTE, NC 28260-0563
PO BOX 60564, CHARLOTTE, NC 28260-0564
PO BOX 60565, CHARLOTTE, NC 28260-0565
PO BOX 60566, CHARLOTTE, NC 28260-0566
PO BOX 60567, CHARLOTTE, NC 28260-0567
PO BOX 60568, CHARLOTTE, NC 28260-0568
PO BOX 60569, CHARLOTTE, NC 28260-0569
PO BOX 60570, CHARLOTTE, NC 28260-0570
PO BOX 60571, CHARLOTTE, NC 28260-0571
PO BOX 60572, CHARLOTTE, NC 28260-0572
PO BOX 60573, CHARLOTTE, NC 28260-0573
PO BOX 60574, CHARLOTTE, NC 28260-0574
PO BOX 60575, CHARLOTTE, NC 28260-0575
PO BOX 60576, CHARLOTTE, NC 28260-0576
PO BOX 60577, CHARLOTTE, NC 28260-0577
PO BOX 60578, CHARLOTTE, NC 28260-0578
PO BOX 60579, CHARLOTTE, NC 28260-0579
PO BOX 60580, CHARLOTTE, NC 28260-0580
PO BOX 60581, CHARLOTTE, NC 28260-0581
PO BOX 60582, CHARLOTTE, NC 28260-0582
PO BOX 60583, CHARLOTTE, NC 28260-0583
PO BOX 60584, CHARLOTTE, NC 28260-0584
PO BOX 60585, CHARLOTTE, NC 28260-0585
PO BOX 60586, CHARLOTTE, NC 28260-0586
PO BOX 60587, CHARLOTTE, NC 28260-0587
PO BOX 60588, CHARLOTTE, NC 28260-0588
PO BOX 60589, CHARLOTTE, NC 28260-0589
PO BOX 60590, CHARLOTTE, NC 28260-0590
PO BOX 60591, CHARLOTTE, NC 28260-0591
PO BOX 60592, CHARLOTTE, NC 28260-0592
PO BOX 60593, CHARLOTTE, NC 28260-0593
PO BOX 60594, CHARLOTTE, NC 28260-0594
PO BOX 60595, CHARLOTTE, NC 28260-0595
PO BOX 60596, CHARLOTTE, NC 28260-0596
PO BOX 60597, CHARLOTTE, NC 28260-0597
PO BOX 60598, CHARLOTTE, NC 28260-0598
PO BOX 60599, CHARLOTTE, NC 28260-0599
PO BOX 60600, CHARLOTTE, NC 28260-0600
PO BOX 60601, CHARLOTTE, NC 28260-0601
PO BOX 60602, CHARLOTTE, NC 28260-0602
PO BOX 60603, CHARLOTTE, NC 28260-0603
PO BOX 60604, CHARLOTTE, NC 28260-0604
PO BOX 60605, CHARLOTTE, NC 28260-0605
PO BOX 60606, CHARLOTTE, NC 28260-0606
PO BOX 60607, CHARLOTTE, NC 28260-0607
PO BOX 60608, CHARLOTTE, NC 28260-0608
PO BOX 60609, CHARLOTTE, NC 28260-0609
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