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, PORTALES, NM 88130-0361
PO BOX 362, PORTALES, NM 88130-0362
PO BOX 363, PORTALES, NM 88130-0363
PO BOX 364, PORTALES, NM 88130-0364
PO BOX 365, PORTALES, NM 88130-0365
PO BOX 366, PORTALES, NM 88130-0366
PO BOX 367, PORTALES, NM 88130-0367
PO BOX 368, PORTALES, NM 88130-0368
PO BOX 369, PORTALES, NM 88130-0369
PO BOX 370, PORTALES, NM 88130-0370
PO BOX 371, PORTALES, NM 88130-0371
PO BOX 372, PORTALES, NM 88130-0372
PO BOX 373, PORTALES, NM 88130-0373
PO BOX 374, PORTALES, NM 88130-0374
PO BOX 375, PORTALES, NM 88130-0375
PO BOX 376, PORTALES, NM 88130-0376
PO BOX 377, PORTALES, NM 88130-0377
PO BOX 378, PORTALES, NM 88130-0378
PO BOX 379, PORTALES, NM 88130-0379
PO BOX 380, PORTALES, NM 88130-0380
PO BOX 381, PORTALES, NM 88130-0381
PO BOX 382, PORTALES, NM 88130-0382
PO BOX 383, PORTALES, NM 88130-0383
PO BOX 384, PORTALES, NM 88130-0384
PO BOX 385, PORTALES, NM 88130-0385
PO BOX 386, PORTALES, NM 88130-0386
PO BOX 387, PORTALES, NM 88130-0387
PO BOX 388, PORTALES, NM 88130-0388
PO BOX 389, PORTALES, NM 88130-0389
PO BOX 390, PORTALES, NM 88130-0390
PO BOX 391, PORTALES, NM 88130-0391
PO BOX 392, PORTALES, NM 88130-0392
PO BOX 393, PORTALES, NM 88130-0393
PO BOX 394, PORTALES, NM 88130-0394
PO BOX 395, PORTALES, NM 88130-0395
PO BOX 396, PORTALES, NM 88130-0396
PO BOX 397, PORTALES, NM 88130-0397
PO BOX 398, PORTALES, NM 88130-0398
PO BOX 399, PORTALES, NM 88130-0399
PO BOX 400, PORTALES, NM 88130-0400
PO BOX 401, PORTALES, NM 88130-0401
PO BOX 402, PORTALES, NM 88130-0402
PO BOX 403, PORTALES, NM 88130-0403
PO BOX 404, PORTALES, NM 88130-0404
PO BOX 405, PORTALES, NM 88130-0405
PO BOX 406, PORTALES, NM 88130-0406
PO BOX 407, PORTALES, NM 88130-0407
PO BOX 408, PORTALES, NM 88130-0408
PO BOX 409, PORTALES, NM 88130-0409
PO BOX 410, PORTALES, NM 88130-0410
PO BOX 411, PORTALES, NM 88130-0411
PO BOX 412, PORTALES, NM 88130-0412
PO BOX 413, PORTALES, NM 88130-0413
PO BOX 414, PORTALES, NM 88130-0414
PO BOX 415, PORTALES, NM 88130-0415
PO BOX 416, PORTALES, NM 88130-0416
PO BOX 417, PORTALES, NM 88130-0417
PO BOX 418, PORTALES, NM 88130-0418
PO BOX 419, PORTALES, NM 88130-0419
PO BOX 420, PORTALES, NM 88130-0420
PO BOX 421, PORTALES, NM 88130-0421
PO BOX 422, PORTALES, NM 88130-0422
PO BOX 423, PORTALES, NM 88130-0423
PO BOX 424, PORTALES, NM 88130-0424
PO BOX 425, PORTALES, NM 88130-0425
PO BOX 426, PORTALES, NM 88130-0426
PO BOX 427, PORTALES, NM 88130-0427
PO BOX 428, PORTALES, NM 88130-0428
PO BOX 429, PORTALES, NM 88130-0429
PO BOX 430, PORTALES, NM 88130-0430
PO BOX 431, PORTALES, NM 88130-0431
PO BOX 432, PORTALES, NM 88130-0432
PO BOX 433, PORTALES, NM 88130-0433
PO BOX 434, PORTALES, NM 88130-0434
PO BOX 435, PORTALES, NM 88130-0435
PO BOX 436, PORTALES, NM 88130-0436
PO BOX 437, PORTALES, NM 88130-0437
PO BOX 438, PORTALES, NM 88130-0438
PO BOX 439, PORTALES, NM 88130-0439
PO BOX 440, PORTALES, NM 88130-0440
PO BOX 441, PORTALES, NM 88130-0441
PO BOX 442, PORTALES, NM 88130-0442
PO BOX 443, PORTALES, NM 88130-0443
PO BOX 444, PORTALES, NM 88130-0444
PO BOX 445, PORTALES, NM 88130-0445
PO BOX 446, PORTALES, NM 88130-0446
PO BOX 447, PORTALES, NM 88130-0447
PO BOX 448, PORTALES, NM 88130-0448
PO BOX 449, PORTALES, NM 88130-0449
PO BOX 450, PORTALES, NM 88130-0450
PO BOX 451, PORTALES, NM 88130-0451
PO BOX 452, PORTALES, NM 88130-0452
PO BOX 453, PORTALES, NM 88130-0453
PO BOX 454, PORTALES, NM 88130-0454
PO BOX 455, PORTALES, NM 88130-0455
PO BOX 456, PORTALES, NM 88130-0456
PO BOX 457, PORTALES, NM 88130-0457
PO BOX 458, PORTALES, NM 88130-0458
PO BOX 459, PORTALES, NM 88130-0459
PO BOX 460, PORTALES, NM 88130-0460
PO BOX 461, PORTALES, NM 88130-0461
PO BOX 462, PORTALES, NM 88130-0462
PO BOX 463, PORTALES, NM 88130-0463
PO BOX 464, PORTALES, NM 88130-0464
PO BOX 465, PORTALES, NM 88130-0465
PO BOX 466, PORTALES, NM 88130-0466
PO BOX 467, PORTALES, NM 88130-0467
PO BOX 468, PORTALES, NM 88130-0468
PO BOX 469, PORTALES, NM 88130-0469
PO BOX 470, PORTALES, NM 88130-0470
PO BOX 471, PORTALES, NM 88130-0471
PO BOX 472, PORTALES, NM 88130-0472
PO BOX 473, PORTALES, NM 88130-0473
PO BOX 474, PORTALES, NM 88130-0474
PO BOX 475, PORTALES, NM 88130-0475
PO BOX 476, PORTALES, NM 88130-0476
PO BOX 477, PORTALES, NM 88130-0477
PO BOX 478, PORTALES, NM 88130-0478
PO BOX 479, PORTALES, NM 88130-0479
PO BOX 480, PORTALES, NM 88130-0480
PO BOX 481, PORTALES, NM 88130-0481
PO BOX 482, PORTALES, NM 88130-0482
PO BOX 483, PORTALES, NM 88130-0483
PO BOX 484, PORTALES, NM 88130-0484
PO BOX 485, PORTALES, NM 88130-0485
PO BOX 486, PORTALES, NM 88130-0486
PO BOX 487, PORTALES, NM 88130-0487
PO BOX 488, PORTALES, NM 88130-0488
PO BOX 489, PORTALES, NM 88130-0489
PO BOX 490, PORTALES, NM 88130-0490
PO BOX 491, PORTALES, NM 88130-0491
PO BOX 492, PORTALES, NM 88130-0492
PO BOX 493, PORTALES, NM 88130-0493
PO BOX 494, PORTALES, NM 88130-0494
PO BOX 495, PORTALES, NM 88130-0495
PO BOX 496, PORTALES, NM 88130-0496
PO BOX 497, PORTALES, NM 88130-0497
PO BOX 498, PORTALES, NM 88130-0498
PO BOX 499, PORTALES, NM 88130-0499
PO BOX 500, PORTALES, NM 88130-0500
PO BOX 501, PORTALES, NM 88130-0501
PO BOX 502, PORTALES, NM 88130-0502
PO BOX 503, PORTALES, NM 88130-0503
PO BOX 504, PORTALES, NM 88130-0504
PO BOX 505, PORTALES, NM 88130-0505
PO BOX 506, PORTALES, NM 88130-0506
PO BOX 507, PORTALES, NM 88130-0507
PO BOX 508, PORTALES, NM 88130-0508
PO BOX 509, PORTALES, NM 88130-0509
PO BOX 510, PORTALES, NM 88130-0510
PO BOX 511, PORTALES, NM 88130-0511
PO BOX 512, PORTALES, NM 88130-0512
PO BOX 513, PORTALES, NM 88130-0513
PO BOX 514, PORTALES, NM 88130-0514
PO BOX 515, PORTALES, NM 88130-0515
PO BOX 516, PORTALES, NM 88130-0516
PO BOX 517, PORTALES, NM 88130-0517
PO BOX 518, PORTALES, NM 88130-0518
PO BOX 519, PORTALES, NM 88130-0519
PO BOX 520, PORTALES, NM 88130-0520
PO BOX 521, PORTALES, NM 88130-0521
PO BOX 522, PORTALES, NM 88130-0522
PO BOX 523, PORTALES, NM 88130-0523
PO BOX 524, PORTALES, NM 88130-0524
PO BOX 525, PORTALES, NM 88130-0525
PO BOX 526, PORTALES, NM 88130-0526
PO BOX 527, PORTALES, NM 88130-0527
PO BOX 528, PORTALES, NM 88130-0528
PO BOX 529, PORTALES, NM 88130-0529
PO BOX 530, PORTALES, NM 88130-0530
PO BOX 531, PORTALES, NM 88130-0531
PO BOX 532, PORTALES, NM 88130-0532
PO BOX 533, PORTALES, NM 88130-0533
PO BOX 534, PORTALES, NM 88130-0534
PO BOX 535, PORTALES, NM 88130-0535
PO BOX 536, PORTALES, NM 88130-0536
PO BOX 537, PORTALES, NM 88130-0537
PO BOX 538, PORTALES, NM 88130-0538
PO BOX 539, PORTALES, NM 88130-0539
PO BOX 540, PORTALES, NM 88130-0540
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