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 341, REXBURG, ID 83440-0341
PO BOX 342, REXBURG, ID 83440-0342
PO BOX 343, REXBURG, ID 83440-0343
PO BOX 344, REXBURG, ID 83440-0344
PO BOX 345, REXBURG, ID 83440-0345
PO BOX 346, REXBURG, ID 83440-0346
PO BOX 347, REXBURG, ID 83440-0347
PO BOX 348, REXBURG, ID 83440-0348
PO BOX 349, REXBURG, ID 83440-0349
PO BOX 350, REXBURG, ID 83440-0350
PO BOX 351, REXBURG, ID 83440-0351
PO BOX 352, REXBURG, ID 83440-0352
PO BOX 353, REXBURG, ID 83440-0353
PO BOX 354, REXBURG, ID 83440-0354
PO BOX 355, REXBURG, ID 83440-0355
PO BOX 356, REXBURG, ID 83440-0356
PO BOX 357, REXBURG, ID 83440-0357
PO BOX 358, REXBURG, ID 83440-0358
PO BOX 359, REXBURG, ID 83440-0359
PO BOX 360, REXBURG, ID 83440-0360
PO BOX 361, REXBURG, ID 83440-0361
PO BOX 362, REXBURG, ID 83440-0362
PO BOX 363, REXBURG, ID 83440-0363
PO BOX 364, REXBURG, ID 83440-0364
PO BOX 365, REXBURG, ID 83440-0365
PO BOX 366, REXBURG, ID 83440-0366
PO BOX 367, REXBURG, ID 83440-0367
PO BOX 368, REXBURG, ID 83440-0368
PO BOX 369, REXBURG, ID 83440-0369
PO BOX 370, REXBURG, ID 83440-0370
PO BOX 371, REXBURG, ID 83440-0371
PO BOX 372, REXBURG, ID 83440-0372
PO BOX 373, REXBURG, ID 83440-0373
PO BOX 374, REXBURG, ID 83440-0374
PO BOX 375, REXBURG, ID 83440-0375
PO BOX 376, REXBURG, ID 83440-0376
PO BOX 377, REXBURG, ID 83440-0377
PO BOX 378, REXBURG, ID 83440-0378
PO BOX 379, REXBURG, ID 83440-0379
PO BOX 380, REXBURG, ID 83440-0380
PO BOX 381, REXBURG, ID 83440-0381
PO BOX 382, REXBURG, ID 83440-0382
PO BOX 383, REXBURG, ID 83440-0383
PO BOX 384, REXBURG, ID 83440-0384
PO BOX 385, REXBURG, ID 83440-0385
PO BOX 386, REXBURG, ID 83440-0386
PO BOX 387, REXBURG, ID 83440-0387
PO BOX 388, REXBURG, ID 83440-0388
PO BOX 389, REXBURG, ID 83440-0389
PO BOX 390, REXBURG, ID 83440-0390
PO BOX 391, REXBURG, ID 83440-0391
PO BOX 392, REXBURG, ID 83440-0392
PO BOX 393, REXBURG, ID 83440-0393
PO BOX 394, REXBURG, ID 83440-0394
PO BOX 395, REXBURG, ID 83440-0395
PO BOX 396, REXBURG, ID 83440-0396
PO BOX 397, REXBURG, ID 83440-0397
PO BOX 398, REXBURG, ID 83440-0398
PO BOX 399, REXBURG, ID 83440-0399
PO BOX 400, REXBURG, ID 83440-0400
PO BOX 401, REXBURG, ID 83440-0401
PO BOX 402, REXBURG, ID 83440-0402
PO BOX 403, REXBURG, ID 83440-0403
PO BOX 404, REXBURG, ID 83440-0404
PO BOX 405, REXBURG, ID 83440-0405
PO BOX 406, REXBURG, ID 83440-0406
PO BOX 407, REXBURG, ID 83440-0407
PO BOX 408, REXBURG, ID 83440-0408
PO BOX 409, REXBURG, ID 83440-0409
PO BOX 410, REXBURG, ID 83440-0410
PO BOX 411, REXBURG, ID 83440-0411
PO BOX 412, REXBURG, ID 83440-0412
PO BOX 413, REXBURG, ID 83440-0413
PO BOX 414, REXBURG, ID 83440-0414
PO BOX 415, REXBURG, ID 83440-0415
PO BOX 416, REXBURG, ID 83440-0416
PO BOX 417, REXBURG, ID 83440-0417
PO BOX 418, REXBURG, ID 83440-0418
PO BOX 419, REXBURG, ID 83440-0419
PO BOX 420, REXBURG, ID 83440-0420
PO BOX 421, REXBURG, ID 83440-0421
PO BOX 422, REXBURG, ID 83440-0422
PO BOX 423, REXBURG, ID 83440-0423
PO BOX 424, REXBURG, ID 83440-0424
PO BOX 425, REXBURG, ID 83440-0425
PO BOX 426, REXBURG, ID 83440-0426
PO BOX 427, REXBURG, ID 83440-0427
PO BOX 428, REXBURG, ID 83440-0428
PO BOX 429, REXBURG, ID 83440-0429
PO BOX 430, REXBURG, ID 83440-0430
PO BOX 431, REXBURG, ID 83440-0431
PO BOX 432, REXBURG, ID 83440-0432
PO BOX 433, REXBURG, ID 83440-0433
PO BOX 434, REXBURG, ID 83440-0434
PO BOX 435, REXBURG, ID 83440-0435
PO BOX 436, REXBURG, ID 83440-0436
PO BOX 437, REXBURG, ID 83440-0437
PO BOX 438, REXBURG, ID 83440-0438
PO BOX 439, REXBURG, ID 83440-0439
PO BOX 440, REXBURG, ID 83440-0440
PO BOX 441, REXBURG, ID 83440-0441
PO BOX 442, REXBURG, ID 83440-0442
PO BOX 443, REXBURG, ID 83440-0443
PO BOX 444, REXBURG, ID 83440-0444
PO BOX 445, REXBURG, ID 83440-0445
PO BOX 446, REXBURG, ID 83440-0446
PO BOX 447, REXBURG, ID 83440-0447
PO BOX 448, REXBURG, ID 83440-0448
PO BOX 449, REXBURG, ID 83440-0449
PO BOX 450, REXBURG, ID 83440-0450
PO BOX 451, REXBURG, ID 83440-0451
PO BOX 452, REXBURG, ID 83440-0452
PO BOX 453, REXBURG, ID 83440-0453
PO BOX 454, REXBURG, ID 83440-0454
PO BOX 455, REXBURG, ID 83440-0455
PO BOX 456, REXBURG, ID 83440-0456
PO BOX 457, REXBURG, ID 83440-0457
PO BOX 458, REXBURG, ID 83440-0458
PO BOX 459, REXBURG, ID 83440-0459
PO BOX 460, REXBURG, ID 83440-0460
PO BOX 461, REXBURG, ID 83440-0461
PO BOX 462, REXBURG, ID 83440-0462
PO BOX 463, REXBURG, ID 83440-0463
PO BOX 464, REXBURG, ID 83440-0464
PO BOX 465, REXBURG, ID 83440-0465
PO BOX 466, REXBURG, ID 83440-0466
PO BOX 467, REXBURG, ID 83440-0467
PO BOX 468, REXBURG, ID 83440-0468
PO BOX 469, REXBURG, ID 83440-0469
PO BOX 470, REXBURG, ID 83440-0470
PO BOX 471, REXBURG, ID 83440-0471
PO BOX 472, REXBURG, ID 83440-0472
PO BOX 473, REXBURG, ID 83440-0473
PO BOX 474, REXBURG, ID 83440-0474
PO BOX 475, REXBURG, ID 83440-0475
PO BOX 476, REXBURG, ID 83440-0476
PO BOX 477, REXBURG, ID 83440-0477
PO BOX 478, REXBURG, ID 83440-0478
PO BOX 479, REXBURG, ID 83440-0479
PO BOX 480, REXBURG, ID 83440-0480
PO BOX 481, REXBURG, ID 83440-0481
PO BOX 482, REXBURG, ID 83440-0482
PO BOX 483, REXBURG, ID 83440-0483
PO BOX 484, REXBURG, ID 83440-0484
PO BOX 485, REXBURG, ID 83440-0485
PO BOX 486, REXBURG, ID 83440-0486
PO BOX 487, REXBURG, ID 83440-0487
PO BOX 488, REXBURG, ID 83440-0488
PO BOX 489, REXBURG, ID 83440-0489
PO BOX 490, REXBURG, ID 83440-0490
PO BOX 491, REXBURG, ID 83440-0491
PO BOX 492, REXBURG, ID 83440-0492
PO BOX 493, REXBURG, ID 83440-0493
PO BOX 494, REXBURG, ID 83440-0494
PO BOX 495, REXBURG, ID 83440-0495
PO BOX 496, REXBURG, ID 83440-0496
PO BOX 497, REXBURG, ID 83440-0497
PO BOX 498, REXBURG, ID 83440-0498
PO BOX 499, REXBURG, ID 83440-0499
PO BOX 500, REXBURG, ID 83440-0500
PO BOX 501, REXBURG, ID 83440-0501
PO BOX 502, REXBURG, ID 83440-0502
PO BOX 503, REXBURG, ID 83440-0503
PO BOX 504, REXBURG, ID 83440-0504
PO BOX 505, REXBURG, ID 83440-0505
PO BOX 506, REXBURG, ID 83440-0506
PO BOX 507, REXBURG, ID 83440-0507
PO BOX 508, REXBURG, ID 83440-0508
PO BOX 509, REXBURG, ID 83440-0509
PO BOX 510, REXBURG, ID 83440-0510
PO BOX 511, REXBURG, ID 83440-0511
PO BOX 512, REXBURG, ID 83440-0512
PO BOX 513, REXBURG, ID 83440-0513
PO BOX 514, REXBURG, ID 83440-0514
PO BOX 515, REXBURG, ID 83440-0515
PO BOX 516, REXBURG, ID 83440-0516
PO BOX 517, REXBURG, ID 83440-0517
PO BOX 518, REXBURG, ID 83440-0518
PO BOX 519, REXBURG, ID 83440-0519
PO BOX 520, REXBURG, ID 83440-0520
PO BOX 521, REXBURG, ID 83440-0521
PO BOX 522, REXBURG, ID 83440-0522
PO BOX 523, REXBURG, ID 83440-0523
PO BOX 524, REXBURG, ID 83440-0524
PO BOX 525, REXBURG, ID 83440-0525
PO BOX 526, REXBURG, ID 83440-0526
PO BOX 527, REXBURG, ID 83440-0527
PO BOX 528, REXBURG, ID 83440-0528
PO BOX 529, REXBURG, ID 83440-0529
PO BOX 530, REXBURG, ID 83440-0530
PO BOX 531, REXBURG, ID 83440-0531
PO BOX 532, REXBURG, ID 83440-0532
PO BOX 533, REXBURG, ID 83440-0533
PO BOX 534, REXBURG, ID 83440-0534
PO BOX 535, REXBURG, ID 83440-0535
PO BOX 536, REXBURG, ID 83440-0536
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