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 361, ROCKINGHAM, NC 28380-0361
PO BOX 362, ROCKINGHAM, NC 28380-0362
PO BOX 363, ROCKINGHAM, NC 28380-0363
PO BOX 364, ROCKINGHAM, NC 28380-0364
PO BOX 365, ROCKINGHAM, NC 28380-0365
PO BOX 366, ROCKINGHAM, NC 28380-0366
PO BOX 367, ROCKINGHAM, NC 28380-0367
PO BOX 368, ROCKINGHAM, NC 28380-0368
PO BOX 369, ROCKINGHAM, NC 28380-0369
PO BOX 370, ROCKINGHAM, NC 28380-0370
PO BOX 371, ROCKINGHAM, NC 28380-0371
PO BOX 372, ROCKINGHAM, NC 28380-0372
PO BOX 373, ROCKINGHAM, NC 28380-0373
PO BOX 374, ROCKINGHAM, NC 28380-0374
PO BOX 375, ROCKINGHAM, NC 28380-0375
PO BOX 376, ROCKINGHAM, NC 28380-0376
PO BOX 377, ROCKINGHAM, NC 28380-0377
PO BOX 378, ROCKINGHAM, NC 28380-0378
PO BOX 379, ROCKINGHAM, NC 28380-0379
PO BOX 380, ROCKINGHAM, NC 28380-0380
PO BOX 381, ROCKINGHAM, NC 28380-0381
PO BOX 382, ROCKINGHAM, NC 28380-0382
PO BOX 383, ROCKINGHAM, NC 28380-0383
PO BOX 384, ROCKINGHAM, NC 28380-0384
PO BOX 385, ROCKINGHAM, NC 28380-0385
PO BOX 386, ROCKINGHAM, NC 28380-0386
PO BOX 387, ROCKINGHAM, NC 28380-0387
PO BOX 388, ROCKINGHAM, NC 28380-0388
PO BOX 389, ROCKINGHAM, NC 28380-0389
PO BOX 390, ROCKINGHAM, NC 28380-0390
PO BOX 391, ROCKINGHAM, NC 28380-0391
PO BOX 392, ROCKINGHAM, NC 28380-0392
PO BOX 393, ROCKINGHAM, NC 28380-0393
PO BOX 394, ROCKINGHAM, NC 28380-0394
PO BOX 395, ROCKINGHAM, NC 28380-0395
PO BOX 396, ROCKINGHAM, NC 28380-0396
PO BOX 397, ROCKINGHAM, NC 28380-0397
PO BOX 398, ROCKINGHAM, NC 28380-0398
PO BOX 399, ROCKINGHAM, NC 28380-0399
PO BOX 400, ROCKINGHAM, NC 28380-0400
PO BOX 401, ROCKINGHAM, NC 28380-0401
PO BOX 402, ROCKINGHAM, NC 28380-0402
PO BOX 403, ROCKINGHAM, NC 28380-0403
PO BOX 404, ROCKINGHAM, NC 28380-0404
PO BOX 405, ROCKINGHAM, NC 28380-0405
PO BOX 406, ROCKINGHAM, NC 28380-0406
PO BOX 407, ROCKINGHAM, NC 28380-0407
PO BOX 408, ROCKINGHAM, NC 28380-0408
PO BOX 409, ROCKINGHAM, NC 28380-0409
PO BOX 410, ROCKINGHAM, NC 28380-0410
PO BOX 411, ROCKINGHAM, NC 28380-0411
PO BOX 412, ROCKINGHAM, NC 28380-0412
PO BOX 413, ROCKINGHAM, NC 28380-0413
PO BOX 414, ROCKINGHAM, NC 28380-0414
PO BOX 415, ROCKINGHAM, NC 28380-0415
PO BOX 416, ROCKINGHAM, NC 28380-0416
PO BOX 417, ROCKINGHAM, NC 28380-0417
PO BOX 418, ROCKINGHAM, NC 28380-0418
PO BOX 419, ROCKINGHAM, NC 28380-0419
PO BOX 420, ROCKINGHAM, NC 28380-0420
PO BOX 421, ROCKINGHAM, NC 28380-0421
PO BOX 422, ROCKINGHAM, NC 28380-0422
PO BOX 423, ROCKINGHAM, NC 28380-0423
PO BOX 424, ROCKINGHAM, NC 28380-0424
PO BOX 425, ROCKINGHAM, NC 28380-0425
PO BOX 426, ROCKINGHAM, NC 28380-0426
PO BOX 427, ROCKINGHAM, NC 28380-0427
PO BOX 428, ROCKINGHAM, NC 28380-0428
PO BOX 429, ROCKINGHAM, NC 28380-0429
PO BOX 430, ROCKINGHAM, NC 28380-0430
PO BOX 431, ROCKINGHAM, NC 28380-0431
PO BOX 432, ROCKINGHAM, NC 28380-0432
PO BOX 433, ROCKINGHAM, NC 28380-0433
PO BOX 434, ROCKINGHAM, NC 28380-0434
PO BOX 435, ROCKINGHAM, NC 28380-0435
PO BOX 436, ROCKINGHAM, NC 28380-0436
PO BOX 437, ROCKINGHAM, NC 28380-0437
PO BOX 438, ROCKINGHAM, NC 28380-0438
PO BOX 439, ROCKINGHAM, NC 28380-0439
PO BOX 440, ROCKINGHAM, NC 28380-0440
PO BOX 441, ROCKINGHAM, NC 28380-0441
PO BOX 442, ROCKINGHAM, NC 28380-0442
PO BOX 443, ROCKINGHAM, NC 28380-0443
PO BOX 444, ROCKINGHAM, NC 28380-0444
PO BOX 445, ROCKINGHAM, NC 28380-0445
PO BOX 446, ROCKINGHAM, NC 28380-0446
PO BOX 447, ROCKINGHAM, NC 28380-0447
PO BOX 448, ROCKINGHAM, NC 28380-0448
PO BOX 449, ROCKINGHAM, NC 28380-0449
PO BOX 450, ROCKINGHAM, NC 28380-0450
PO BOX 451, ROCKINGHAM, NC 28380-0451
PO BOX 452, ROCKINGHAM, NC 28380-0452
PO BOX 453, ROCKINGHAM, NC 28380-0453
PO BOX 454, ROCKINGHAM, NC 28380-0454
PO BOX 455, ROCKINGHAM, NC 28380-0455
PO BOX 456, ROCKINGHAM, NC 28380-0456
PO BOX 457, ROCKINGHAM, NC 28380-0457
PO BOX 458, ROCKINGHAM, NC 28380-0458
PO BOX 459, ROCKINGHAM, NC 28380-0459
PO BOX 460, ROCKINGHAM, NC 28380-0460
PO BOX 461, ROCKINGHAM, NC 28380-0461
PO BOX 462, ROCKINGHAM, NC 28380-0462
PO BOX 463, ROCKINGHAM, NC 28380-0463
PO BOX 464, ROCKINGHAM, NC 28380-0464
PO BOX 465, ROCKINGHAM, NC 28380-0465
PO BOX 466, ROCKINGHAM, NC 28380-0466
PO BOX 467, ROCKINGHAM, NC 28380-0467
PO BOX 468, ROCKINGHAM, NC 28380-0468
PO BOX 469, ROCKINGHAM, NC 28380-0469
PO BOX 470, ROCKINGHAM, NC 28380-0470
PO BOX 471, ROCKINGHAM, NC 28380-0471
PO BOX 472, ROCKINGHAM, NC 28380-0472
PO BOX 473, ROCKINGHAM, NC 28380-0473
PO BOX 474, ROCKINGHAM, NC 28380-0474
PO BOX 475, ROCKINGHAM, NC 28380-0475
PO BOX 476, ROCKINGHAM, NC 28380-0476
PO BOX 477, ROCKINGHAM, NC 28380-0477
PO BOX 478, ROCKINGHAM, NC 28380-0478
PO BOX 479, ROCKINGHAM, NC 28380-0479
PO BOX 480, ROCKINGHAM, NC 28380-0480
PO BOX 481, ROCKINGHAM, NC 28380-0481
PO BOX 482, ROCKINGHAM, NC 28380-0482
PO BOX 483, ROCKINGHAM, NC 28380-0483
PO BOX 484, ROCKINGHAM, NC 28380-0484
PO BOX 485, ROCKINGHAM, NC 28380-0485
PO BOX 486, ROCKINGHAM, NC 28380-0486
PO BOX 487, ROCKINGHAM, NC 28380-0487
PO BOX 488, ROCKINGHAM, NC 28380-0488
PO BOX 489, ROCKINGHAM, NC 28380-0489
PO BOX 490, ROCKINGHAM, NC 28380-0490
PO BOX 491, ROCKINGHAM, NC 28380-0491
PO BOX 492, ROCKINGHAM, NC 28380-0492
PO BOX 493, ROCKINGHAM, NC 28380-0493
PO BOX 494, ROCKINGHAM, NC 28380-0494
PO BOX 495, ROCKINGHAM, NC 28380-0495
PO BOX 496, ROCKINGHAM, NC 28380-0496
PO BOX 497, ROCKINGHAM, NC 28380-0497
PO BOX 498, ROCKINGHAM, NC 28380-0498
PO BOX 499, ROCKINGHAM, NC 28380-0499
PO BOX 500, ROCKINGHAM, NC 28380-0500
PO BOX 501, ROCKINGHAM, NC 28380-0501
PO BOX 502, ROCKINGHAM, NC 28380-0502
PO BOX 503, ROCKINGHAM, NC 28380-0503
PO BOX 504, ROCKINGHAM, NC 28380-0504
PO BOX 505, ROCKINGHAM, NC 28380-0505
PO BOX 506, ROCKINGHAM, NC 28380-0506
PO BOX 507, ROCKINGHAM, NC 28380-0507
PO BOX 508, ROCKINGHAM, NC 28380-0508
PO BOX 509, ROCKINGHAM, NC 28380-0509
PO BOX 510, ROCKINGHAM, NC 28380-0510
PO BOX 511, ROCKINGHAM, NC 28380-0511
PO BOX 512, ROCKINGHAM, NC 28380-0512
PO BOX 513, ROCKINGHAM, NC 28380-0513
PO BOX 514, ROCKINGHAM, NC 28380-0514
PO BOX 515, ROCKINGHAM, NC 28380-0515
PO BOX 516, ROCKINGHAM, NC 28380-0516
PO BOX 517, ROCKINGHAM, NC 28380-0517
PO BOX 518, ROCKINGHAM, NC 28380-0518
PO BOX 519, ROCKINGHAM, NC 28380-0519
PO BOX 520, ROCKINGHAM, NC 28380-0520
PO BOX 521, ROCKINGHAM, NC 28380-0521
PO BOX 522, ROCKINGHAM, NC 28380-0522
PO BOX 523, ROCKINGHAM, NC 28380-0523
PO BOX 524, ROCKINGHAM, NC 28380-0524
PO BOX 525, ROCKINGHAM, NC 28380-0525
PO BOX 526, ROCKINGHAM, NC 28380-0526
PO BOX 527, ROCKINGHAM, NC 28380-0527
PO BOX 528, ROCKINGHAM, NC 28380-0528
PO BOX 529, ROCKINGHAM, NC 28380-0529
PO BOX 530, ROCKINGHAM, NC 28380-0530
PO BOX 531, ROCKINGHAM, NC 28380-0531
PO BOX 532, ROCKINGHAM, NC 28380-0532
PO BOX 533, ROCKINGHAM, NC 28380-0533
PO BOX 534, ROCKINGHAM, NC 28380-0534
PO BOX 535, ROCKINGHAM, NC 28380-0535
PO BOX 536, ROCKINGHAM, NC 28380-0536
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