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 421, WISCONSIN RAPIDS, WI 54495-0421
PO BOX 422, WISCONSIN RAPIDS, WI 54495-0422
PO BOX 423, WISCONSIN RAPIDS, WI 54495-0423
PO BOX 424, WISCONSIN RAPIDS, WI 54495-0424
PO BOX 425, WISCONSIN RAPIDS, WI 54495-0425
PO BOX 426, WISCONSIN RAPIDS, WI 54495-0426
PO BOX 427, WISCONSIN RAPIDS, WI 54495-0427
PO BOX 428, WISCONSIN RAPIDS, WI 54495-0428
PO BOX 429, WISCONSIN RAPIDS, WI 54495-0429
PO BOX 430, WISCONSIN RAPIDS, WI 54495-0430
PO BOX 431, WISCONSIN RAPIDS, WI 54495-0431
PO BOX 432, WISCONSIN RAPIDS, WI 54495-0432
PO BOX 433, WISCONSIN RAPIDS, WI 54495-0433
PO BOX 434, WISCONSIN RAPIDS, WI 54495-0434
PO BOX 435, WISCONSIN RAPIDS, WI 54495-0435
PO BOX 436, WISCONSIN RAPIDS, WI 54495-0436
PO BOX 437, WISCONSIN RAPIDS, WI 54495-0437
PO BOX 438, WISCONSIN RAPIDS, WI 54495-0438
PO BOX 439, WISCONSIN RAPIDS, WI 54495-0439
PO BOX 440, WISCONSIN RAPIDS, WI 54495-0440
PO BOX 441, WISCONSIN RAPIDS, WI 54495-0441
PO BOX 442, WISCONSIN RAPIDS, WI 54495-0442
PO BOX 443, WISCONSIN RAPIDS, WI 54495-0443
PO BOX 444, WISCONSIN RAPIDS, WI 54495-0444
PO BOX 445, WISCONSIN RAPIDS, WI 54495-0445
PO BOX 446, WISCONSIN RAPIDS, WI 54495-0446
PO BOX 447, WISCONSIN RAPIDS, WI 54495-0447
PO BOX 448, WISCONSIN RAPIDS, WI 54495-0448
PO BOX 449, WISCONSIN RAPIDS, WI 54495-0449
PO BOX 450, WISCONSIN RAPIDS, WI 54495-0450
PO BOX 451, WISCONSIN RAPIDS, WI 54495-0451
PO BOX 452, WISCONSIN RAPIDS, WI 54495-0452
PO BOX 453, WISCONSIN RAPIDS, WI 54495-0453
PO BOX 454, WISCONSIN RAPIDS, WI 54495-0454
PO BOX 455, WISCONSIN RAPIDS, WI 54495-0455
PO BOX 456, WISCONSIN RAPIDS, WI 54495-0456
PO BOX 457, WISCONSIN RAPIDS, WI 54495-0457
PO BOX 458, WISCONSIN RAPIDS, WI 54495-0458
PO BOX 459, WISCONSIN RAPIDS, WI 54495-0459
PO BOX 460, WISCONSIN RAPIDS, WI 54495-0460
PO BOX 461, WISCONSIN RAPIDS, WI 54495-0461
PO BOX 462, WISCONSIN RAPIDS, WI 54495-0462
PO BOX 463, WISCONSIN RAPIDS, WI 54495-0463
PO BOX 464, WISCONSIN RAPIDS, WI 54495-0464
PO BOX 465, WISCONSIN RAPIDS, WI 54495-0465
PO BOX 466, WISCONSIN RAPIDS, WI 54495-0466
PO BOX 467, WISCONSIN RAPIDS, WI 54495-0467
PO BOX 468, WISCONSIN RAPIDS, WI 54495-0468
PO BOX 469, WISCONSIN RAPIDS, WI 54495-0469
PO BOX 470, WISCONSIN RAPIDS, WI 54495-0470
PO BOX 471, WISCONSIN RAPIDS, WI 54495-0471
PO BOX 472, WISCONSIN RAPIDS, WI 54495-0472
PO BOX 473, WISCONSIN RAPIDS, WI 54495-0473
PO BOX 474, WISCONSIN RAPIDS, WI 54495-0474
PO BOX 475, WISCONSIN RAPIDS, WI 54495-0475
PO BOX 476, WISCONSIN RAPIDS, WI 54495-0476
PO BOX 477, WISCONSIN RAPIDS, WI 54495-0477
PO BOX 478, WISCONSIN RAPIDS, WI 54495-0478
PO BOX 479, WISCONSIN RAPIDS, WI 54495-0479
PO BOX 480, WISCONSIN RAPIDS, WI 54495-0480
PO BOX 481, WISCONSIN RAPIDS, WI 54495-0481
PO BOX 482, WISCONSIN RAPIDS, WI 54495-0482
PO BOX 483, WISCONSIN RAPIDS, WI 54495-0483
PO BOX 484, WISCONSIN RAPIDS, WI 54495-0484
PO BOX 485, WISCONSIN RAPIDS, WI 54495-0485
PO BOX 486, WISCONSIN RAPIDS, WI 54495-0486
PO BOX 487, WISCONSIN RAPIDS, WI 54495-0487
PO BOX 488, WISCONSIN RAPIDS, WI 54495-0488
PO BOX 489, WISCONSIN RAPIDS, WI 54495-0489
PO BOX 490, WISCONSIN RAPIDS, WI 54495-0490
PO BOX 491, WISCONSIN RAPIDS, WI 54495-0491
PO BOX 492, WISCONSIN RAPIDS, WI 54495-0492
PO BOX 493, WISCONSIN RAPIDS, WI 54495-0493
PO BOX 494, WISCONSIN RAPIDS, WI 54495-0494
PO BOX 495, WISCONSIN RAPIDS, WI 54495-0495
PO BOX 496, WISCONSIN RAPIDS, WI 54495-0496
PO BOX 497, WISCONSIN RAPIDS, WI 54495-0497
PO BOX 498, WISCONSIN RAPIDS, WI 54495-0498
PO BOX 499, WISCONSIN RAPIDS, WI 54495-0499
PO BOX 500, WISCONSIN RAPIDS, WI 54495-0500
PO BOX 501, WISCONSIN RAPIDS, WI 54495-0501
PO BOX 502, WISCONSIN RAPIDS, WI 54495-0502
PO BOX 503, WISCONSIN RAPIDS, WI 54495-0503
PO BOX 504, WISCONSIN RAPIDS, WI 54495-0504
PO BOX 505, WISCONSIN RAPIDS, WI 54495-0505
PO BOX 506, WISCONSIN RAPIDS, WI 54495-0506
PO BOX 507, WISCONSIN RAPIDS, WI 54495-0507
PO BOX 508, WISCONSIN RAPIDS, WI 54495-0508
PO BOX 509, WISCONSIN RAPIDS, WI 54495-0509
PO BOX 510, WISCONSIN RAPIDS, WI 54495-0510
PO BOX 511, WISCONSIN RAPIDS, WI 54495-0511
PO BOX 512, WISCONSIN RAPIDS, WI 54495-0512
PO BOX 513, WISCONSIN RAPIDS, WI 54495-0513
PO BOX 514, WISCONSIN RAPIDS, WI 54495-0514
PO BOX 515, WISCONSIN RAPIDS, WI 54495-0515
PO BOX 516, WISCONSIN RAPIDS, WI 54495-0516
PO BOX 517, WISCONSIN RAPIDS, WI 54495-0517
PO BOX 518, WISCONSIN RAPIDS, WI 54495-0518
PO BOX 519, WISCONSIN RAPIDS, WI 54495-0519
PO BOX 520, WISCONSIN RAPIDS, WI 54495-0520
PO BOX 521, WISCONSIN RAPIDS, WI 54495-0521
PO BOX 522, WISCONSIN RAPIDS, WI 54495-0522
PO BOX 523, WISCONSIN RAPIDS, WI 54495-0523
PO BOX 524, WISCONSIN RAPIDS, WI 54495-0524
PO BOX 525, WISCONSIN RAPIDS, WI 54495-0525
PO BOX 526, WISCONSIN RAPIDS, WI 54495-0526
PO BOX 527, WISCONSIN RAPIDS, WI 54495-0527
PO BOX 528, WISCONSIN RAPIDS, WI 54495-0528
PO BOX 529, WISCONSIN RAPIDS, WI 54495-0529
PO BOX 530, WISCONSIN RAPIDS, WI 54495-0530
PO BOX 531, WISCONSIN RAPIDS, WI 54495-0531
PO BOX 532, WISCONSIN RAPIDS, WI 54495-0532
PO BOX 533, WISCONSIN RAPIDS, WI 54495-0533
PO BOX 534, WISCONSIN RAPIDS, WI 54495-0534
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