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 321, WAGRAM, NC 28396-0321
PO BOX 322, WAGRAM, NC 28396-0322
PO BOX 323, WAGRAM, NC 28396-0323
PO BOX 324, WAGRAM, NC 28396-0324
PO BOX 325, WAGRAM, NC 28396-0325
PO BOX 326, WAGRAM, NC 28396-0326
PO BOX 327, WAGRAM, NC 28396-0327
PO BOX 328, WAGRAM, NC 28396-0328
PO BOX 329, WAGRAM, NC 28396-0329
PO BOX 330, WAGRAM, NC 28396-0330
PO BOX 331, WAGRAM, NC 28396-0331
PO BOX 332, WAGRAM, NC 28396-0332
PO BOX 333, WAGRAM, NC 28396-0333
PO BOX 334, WAGRAM, NC 28396-0334
PO BOX 335, WAGRAM, NC 28396-0335
PO BOX 336, WAGRAM, NC 28396-0336
PO BOX 337, WAGRAM, NC 28396-0337
PO BOX 338, WAGRAM, NC 28396-0338
PO BOX 339, WAGRAM, NC 28396-0339
PO BOX 340, WAGRAM, NC 28396-0340
PO BOX 341, WAGRAM, NC 28396-0341
PO BOX 342, WAGRAM, NC 28396-0342
PO BOX 343, WAGRAM, NC 28396-0343
PO BOX 344, WAGRAM, NC 28396-0344
PO BOX 345, WAGRAM, NC 28396-0345
PO BOX 346, WAGRAM, NC 28396-0346
PO BOX 347, WAGRAM, NC 28396-0347
PO BOX 348, WAGRAM, NC 28396-0348
PO BOX 349, WAGRAM, NC 28396-0349
PO BOX 350, WAGRAM, NC 28396-0350
PO BOX 351, WAGRAM, NC 28396-0351
PO BOX 352, WAGRAM, NC 28396-0352
PO BOX 353, WAGRAM, NC 28396-0353
PO BOX 354, WAGRAM, NC 28396-0354
PO BOX 355, WAGRAM, NC 28396-0355
PO BOX 356, WAGRAM, NC 28396-0356
PO BOX 357, WAGRAM, NC 28396-0357
PO BOX 358, WAGRAM, NC 28396-0358
PO BOX 359, WAGRAM, NC 28396-0359
PO BOX 360, WAGRAM, NC 28396-0360
PO BOX 361, WAGRAM, NC 28396-0361
PO BOX 362, WAGRAM, NC 28396-0362
PO BOX 363, WAGRAM, NC 28396-0363
PO BOX 364, WAGRAM, NC 28396-0364
PO BOX 365, WAGRAM, NC 28396-0365
PO BOX 366, WAGRAM, NC 28396-0366
PO BOX 367, WAGRAM, NC 28396-0367
PO BOX 368, WAGRAM, NC 28396-0368
PO BOX 369, WAGRAM, NC 28396-0369
PO BOX 370, WAGRAM, NC 28396-0370
PO BOX 371, WAGRAM, NC 28396-0371
PO BOX 372, WAGRAM, NC 28396-0372
PO BOX 373, WAGRAM, NC 28396-0373
PO BOX 374, WAGRAM, NC 28396-0374
PO BOX 375, WAGRAM, NC 28396-0375
PO BOX 376, WAGRAM, NC 28396-0376
PO BOX 377, WAGRAM, NC 28396-0377
PO BOX 378, WAGRAM, NC 28396-0378
PO BOX 379, WAGRAM, NC 28396-0379
PO BOX 380, WAGRAM, NC 28396-0380
PO BOX 381, WAGRAM, NC 28396-0381
PO BOX 382, WAGRAM, NC 28396-0382
PO BOX 383, WAGRAM, NC 28396-0383
PO BOX 384, WAGRAM, NC 28396-0384
PO BOX 385, WAGRAM, NC 28396-0385
PO BOX 386, WAGRAM, NC 28396-0386
PO BOX 387, WAGRAM, NC 28396-0387
PO BOX 388, WAGRAM, NC 28396-0388
PO BOX 389, WAGRAM, NC 28396-0389
PO BOX 390, WAGRAM, NC 28396-0390
PO BOX 391, WAGRAM, NC 28396-0391
PO BOX 392, WAGRAM, NC 28396-0392
PO BOX 393, WAGRAM, NC 28396-0393
PO BOX 394, WAGRAM, NC 28396-0394
PO BOX 395, WAGRAM, NC 28396-0395
PO BOX 396, WAGRAM, NC 28396-0396
PO BOX 397, WAGRAM, NC 28396-0397
PO BOX 398, WAGRAM, NC 28396-0398
PO BOX 399, WAGRAM, NC 28396-0399
PO BOX 400, WAGRAM, NC 28396-0400
PO BOX 401, WAGRAM, NC 28396-0401
PO BOX 402, WAGRAM, NC 28396-0402
PO BOX 403, WAGRAM, NC 28396-0403
PO BOX 404, WAGRAM, NC 28396-0404
PO BOX 405, WAGRAM, NC 28396-0405
PO BOX 406, WAGRAM, NC 28396-0406
PO BOX 407, WAGRAM, NC 28396-0407
PO BOX 408, WAGRAM, NC 28396-0408
PO BOX 409, WAGRAM, NC 28396-0409
PO BOX 410, WAGRAM, NC 28396-0410
PO BOX 411, WAGRAM, NC 28396-0411
PO BOX 412, WAGRAM, NC 28396-0412
PO BOX 413, WAGRAM, NC 28396-0413
PO BOX 414, WAGRAM, NC 28396-0414
PO BOX 415, WAGRAM, NC 28396-0415
PO BOX 416, WAGRAM, NC 28396-0416
PO BOX 417, WAGRAM, NC 28396-0417
PO BOX 418, WAGRAM, NC 28396-0418
PO BOX 419, WAGRAM, NC 28396-0419
PO BOX 420, WAGRAM, NC 28396-0420
PO BOX 421, WAGRAM, NC 28396-0421
PO BOX 422, WAGRAM, NC 28396-0422
PO BOX 423, WAGRAM, NC 28396-0423
PO BOX 424, WAGRAM, NC 28396-0424
PO BOX 425, WAGRAM, NC 28396-0425
PO BOX 426, WAGRAM, NC 28396-0426
PO BOX 427, WAGRAM, NC 28396-0427
PO BOX 428, WAGRAM, NC 28396-0428
PO BOX 429, WAGRAM, NC 28396-0429
PO BOX 430, WAGRAM, NC 28396-0430
PO BOX 431, WAGRAM, NC 28396-0431
PO BOX 432, WAGRAM, NC 28396-0432
PO BOX 433, WAGRAM, NC 28396-0433
PO BOX 434, WAGRAM, NC 28396-0434
PO BOX 435, WAGRAM, NC 28396-0435
PO BOX 436, WAGRAM, NC 28396-0436
PO BOX 437, WAGRAM, NC 28396-0437
PO BOX 438, WAGRAM, NC 28396-0438
PO BOX 439, WAGRAM, NC 28396-0439
PO BOX 440, WAGRAM, NC 28396-0440
PO BOX 441, WAGRAM, NC 28396-0441
PO BOX 442, WAGRAM, NC 28396-0442
PO BOX 443, WAGRAM, NC 28396-0443
PO BOX 444, WAGRAM, NC 28396-0444
PO BOX 445, WAGRAM, NC 28396-0445
PO BOX 446, WAGRAM, NC 28396-0446
PO BOX 447, WAGRAM, NC 28396-0447
PO BOX 448, WAGRAM, NC 28396-0448
PO BOX 449, WAGRAM, NC 28396-0449
PO BOX 450, WAGRAM, NC 28396-0450
PO BOX 451, WAGRAM, NC 28396-0451
PO BOX 452, WAGRAM, NC 28396-0452
PO BOX 453, WAGRAM, NC 28396-0453
PO BOX 454, WAGRAM, NC 28396-0454
PO BOX 455, WAGRAM, NC 28396-0455
PO BOX 456, WAGRAM, NC 28396-0456
PO BOX 457, WAGRAM, NC 28396-0457
PO BOX 458, WAGRAM, NC 28396-0458
PO BOX 459, WAGRAM, NC 28396-0459
PO BOX 460, WAGRAM, NC 28396-0460
PO BOX 461, WAGRAM, NC 28396-0461
PO BOX 462, WAGRAM, NC 28396-0462
PO BOX 463, WAGRAM, NC 28396-0463
PO BOX 464, WAGRAM, NC 28396-0464
PO BOX 465, WAGRAM, NC 28396-0465
PO BOX 466, WAGRAM, NC 28396-0466
PO BOX 467, WAGRAM, NC 28396-0467
PO BOX 468, WAGRAM, NC 28396-0468
PO BOX 469, WAGRAM, NC 28396-0469
PO BOX 470, WAGRAM, NC 28396-0470
PO BOX 471, WAGRAM, NC 28396-0471
PO BOX 472, WAGRAM, NC 28396-0472
PO BOX 473, WAGRAM, NC 28396-0473
PO BOX 474, WAGRAM, NC 28396-0474
PO BOX 475, WAGRAM, NC 28396-0475
PO BOX 476, WAGRAM, NC 28396-0476
PO BOX 477, WAGRAM, NC 28396-0477
PO BOX 478, WAGRAM, NC 28396-0478
PO BOX 479, WAGRAM, NC 28396-0479
PO BOX 480, WAGRAM, NC 28396-0480
PO BOX 481, WAGRAM, NC 28396-0481
PO BOX 482, WAGRAM, NC 28396-0482
PO BOX 483, WAGRAM, NC 28396-0483
PO BOX 484, WAGRAM, NC 28396-0484
PO BOX 485, WAGRAM, NC 28396-0485
PO BOX 486, WAGRAM, NC 28396-0486
PO BOX 487, WAGRAM, NC 28396-0487
PO BOX 488, WAGRAM, NC 28396-0488
PO BOX 489, WAGRAM, NC 28396-0489
PO BOX 490, WAGRAM, NC 28396-0490
PO BOX 491, WAGRAM, NC 28396-0491
PO BOX 492, WAGRAM, NC 28396-0492
PO BOX 493, WAGRAM, NC 28396-0493
PO BOX 494, WAGRAM, NC 28396-0494
PO BOX 495, WAGRAM, NC 28396-0495
PO BOX 496, WAGRAM, NC 28396-0496
PO BOX 497, WAGRAM, NC 28396-0497
PO BOX 498, WAGRAM, NC 28396-0498
PO BOX 499, WAGRAM, NC 28396-0499
PO BOX 500, WAGRAM, NC 28396-0500
PO BOX 501, WAGRAM, NC 28396-0501
PO BOX 502, WAGRAM, NC 28396-0502
PO BOX 503, WAGRAM, NC 28396-0503
PO BOX 504, WAGRAM, NC 28396-0504
PO BOX 505, WAGRAM, NC 28396-0505
PO BOX 506, WAGRAM, NC 28396-0506
PO BOX 507, WAGRAM, NC 28396-0507
PO BOX 508, WAGRAM, NC 28396-0508
PO BOX 509, WAGRAM, NC 28396-0509
PO BOX 510, WAGRAM, NC 28396-0510
PO BOX 511, WAGRAM, NC 28396-0511
PO BOX 512, WAGRAM, NC 28396-0512
PO BOX 513, WAGRAM, NC 28396-0513
PO BOX 514, WAGRAM, NC 28396-0514
PO BOX 515, WAGRAM, NC 28396-0515
PO BOX 516, WAGRAM, NC 28396-0516
PO BOX 517, WAGRAM, NC 28396-0517
PO BOX 518, WAGRAM, NC 28396-0518
PO BOX 519, WAGRAM, NC 28396-0519
PO BOX 520, WAGRAM, NC 28396-0520
PO BOX 521, WAGRAM, NC 28396-0521
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