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 441, ALAMOGORDO, NM 88311-0441
PO BOX 442, ALAMOGORDO, NM 88311-0442
PO BOX 443, ALAMOGORDO, NM 88311-0443
PO BOX 444, ALAMOGORDO, NM 88311-0444
PO BOX 445, ALAMOGORDO, NM 88311-0445
PO BOX 446, ALAMOGORDO, NM 88311-0446
PO BOX 447, ALAMOGORDO, NM 88311-0447
PO BOX 448, ALAMOGORDO, NM 88311-0448
PO BOX 449, ALAMOGORDO, NM 88311-0449
PO BOX 450, ALAMOGORDO, NM 88311-0450
PO BOX 451, ALAMOGORDO, NM 88311-0451
PO BOX 452, ALAMOGORDO, NM 88311-0452
PO BOX 453, ALAMOGORDO, NM 88311-0453
PO BOX 454, ALAMOGORDO, NM 88311-0454
PO BOX 455, ALAMOGORDO, NM 88311-0455
PO BOX 456, ALAMOGORDO, NM 88311-0456
PO BOX 457, ALAMOGORDO, NM 88311-0457
PO BOX 458, ALAMOGORDO, NM 88311-0458
PO BOX 459, ALAMOGORDO, NM 88311-0459
PO BOX 460, ALAMOGORDO, NM 88311-0460
PO BOX 461, ALAMOGORDO, NM 88311-0461
PO BOX 462, ALAMOGORDO, NM 88311-0462
PO BOX 463, ALAMOGORDO, NM 88311-0463
PO BOX 464, ALAMOGORDO, NM 88311-0464
PO BOX 465, ALAMOGORDO, NM 88311-0465
PO BOX 466, ALAMOGORDO, NM 88311-0466
PO BOX 467, ALAMOGORDO, NM 88311-0467
PO BOX 468, ALAMOGORDO, NM 88311-0468
PO BOX 469, ALAMOGORDO, NM 88311-0469
PO BOX 470, ALAMOGORDO, NM 88311-0470
PO BOX 471, ALAMOGORDO, NM 88311-0471
PO BOX 472, ALAMOGORDO, NM 88311-0472
PO BOX 473, ALAMOGORDO, NM 88311-0473
PO BOX 474, ALAMOGORDO, NM 88311-0474
PO BOX 475, ALAMOGORDO, NM 88311-0475
PO BOX 476, ALAMOGORDO, NM 88311-0476
PO BOX 477, ALAMOGORDO, NM 88311-0477
PO BOX 478, ALAMOGORDO, NM 88311-0478
PO BOX 479, ALAMOGORDO, NM 88311-0479
PO BOX 480, ALAMOGORDO, NM 88311-0480
PO BOX 481, ALAMOGORDO, NM 88311-0481
PO BOX 482, ALAMOGORDO, NM 88311-0482
PO BOX 483, ALAMOGORDO, NM 88311-0483
PO BOX 484, ALAMOGORDO, NM 88311-0484
PO BOX 485, ALAMOGORDO, NM 88311-0485
PO BOX 486, ALAMOGORDO, NM 88311-0486
PO BOX 487, ALAMOGORDO, NM 88311-0487
PO BOX 488, ALAMOGORDO, NM 88311-0488
PO BOX 489, ALAMOGORDO, NM 88311-0489
PO BOX 490, ALAMOGORDO, NM 88311-0490
PO BOX 491, ALAMOGORDO, NM 88311-0491
PO BOX 492, ALAMOGORDO, NM 88311-0492
PO BOX 493, ALAMOGORDO, NM 88311-0493
PO BOX 494, ALAMOGORDO, NM 88311-0494
PO BOX 495, ALAMOGORDO, NM 88311-0495
PO BOX 496, ALAMOGORDO, NM 88311-0496
PO BOX 497, ALAMOGORDO, NM 88311-0497
PO BOX 498, ALAMOGORDO, NM 88311-0498
PO BOX 499, ALAMOGORDO, NM 88311-0499
PO BOX 500, ALAMOGORDO, NM 88311-0500
PO BOX 501, ALAMOGORDO, NM 88311-0501
PO BOX 502, ALAMOGORDO, NM 88311-0502
PO BOX 503, ALAMOGORDO, NM 88311-0503
PO BOX 504, ALAMOGORDO, NM 88311-0504
PO BOX 505, ALAMOGORDO, NM 88311-0505
PO BOX 506, ALAMOGORDO, NM 88311-0506
PO BOX 507, ALAMOGORDO, NM 88311-0507
PO BOX 508, ALAMOGORDO, NM 88311-0508
PO BOX 509, ALAMOGORDO, NM 88311-0509
PO BOX 510, ALAMOGORDO, NM 88311-0510
PO BOX 511, ALAMOGORDO, NM 88311-0511
PO BOX 512, ALAMOGORDO, NM 88311-0512
PO BOX 513, ALAMOGORDO, NM 88311-0513
PO BOX 514, ALAMOGORDO, NM 88311-0514
PO BOX 515, ALAMOGORDO, NM 88311-0515
PO BOX 516, ALAMOGORDO, NM 88311-0516
PO BOX 517, ALAMOGORDO, NM 88311-0517
PO BOX 518, ALAMOGORDO, NM 88311-0518
PO BOX 519, ALAMOGORDO, NM 88311-0519
PO BOX 520, ALAMOGORDO, NM 88311-0520
PO BOX 521, ALAMOGORDO, NM 88311-0521
PO BOX 522, ALAMOGORDO, NM 88311-0522
PO BOX 523, ALAMOGORDO, NM 88311-0523
PO BOX 524, ALAMOGORDO, NM 88311-0524
PO BOX 525, ALAMOGORDO, NM 88311-0525
PO BOX 526, ALAMOGORDO, NM 88311-0526
PO BOX 527, ALAMOGORDO, NM 88311-0527
PO BOX 528, ALAMOGORDO, NM 88311-0528
PO BOX 529, ALAMOGORDO, NM 88311-0529
PO BOX 530, ALAMOGORDO, NM 88311-0530
PO BOX 531, ALAMOGORDO, NM 88311-0531
PO BOX 532, ALAMOGORDO, NM 88311-0532
PO BOX 533, ALAMOGORDO, NM 88311-0533
PO BOX 534, ALAMOGORDO, NM 88311-0534
PO BOX 535, ALAMOGORDO, NM 88311-0535
PO BOX 536, ALAMOGORDO, NM 88311-0536
PO BOX 537, ALAMOGORDO, NM 88311-0537
PO BOX 538, ALAMOGORDO, NM 88311-0538
PO BOX 539, ALAMOGORDO, NM 88311-0539
PO BOX 540, ALAMOGORDO, NM 88311-0540
PO BOX 541, ALAMOGORDO, NM 88311-0541
PO BOX 542, ALAMOGORDO, NM 88311-0542
PO BOX 543, ALAMOGORDO, NM 88311-0543
PO BOX 544, ALAMOGORDO, NM 88311-0544
PO BOX 545, ALAMOGORDO, NM 88311-0545
PO BOX 546, ALAMOGORDO, NM 88311-0546
PO BOX 547, ALAMOGORDO, NM 88311-0547
PO BOX 548, ALAMOGORDO, NM 88311-0548
PO BOX 549, ALAMOGORDO, NM 88311-0549
PO BOX 550, ALAMOGORDO, NM 88311-0550
PO BOX 551, ALAMOGORDO, NM 88311-0551
PO BOX 552, ALAMOGORDO, NM 88311-0552
PO BOX 553, ALAMOGORDO, NM 88311-0553
PO BOX 554, ALAMOGORDO, NM 88311-0554
PO BOX 555, ALAMOGORDO, NM 88311-0555
PO BOX 556, ALAMOGORDO, NM 88311-0556
PO BOX 557, ALAMOGORDO, NM 88311-0557
PO BOX 558, ALAMOGORDO, NM 88311-0558
PO BOX 559, ALAMOGORDO, NM 88311-0559
PO BOX 560, ALAMOGORDO, NM 88311-0560
PO BOX 561, ALAMOGORDO, NM 88311-0561
PO BOX 562, ALAMOGORDO, NM 88311-0562
PO BOX 563, ALAMOGORDO, NM 88311-0563
PO BOX 564, ALAMOGORDO, NM 88311-0564
PO BOX 565, ALAMOGORDO, NM 88311-0565
PO BOX 566, ALAMOGORDO, NM 88311-0566
PO BOX 567, ALAMOGORDO, NM 88311-0567
PO BOX 568, ALAMOGORDO, NM 88311-0568
PO BOX 569, ALAMOGORDO, NM 88311-0569
PO BOX 570, ALAMOGORDO, NM 88311-0570
PO BOX 571, ALAMOGORDO, NM 88311-0571
PO BOX 572, ALAMOGORDO, NM 88311-0572
PO BOX 573, ALAMOGORDO, NM 88311-0573
PO BOX 574, ALAMOGORDO, NM 88311-0574
PO BOX 575, ALAMOGORDO, NM 88311-0575
PO BOX 576, ALAMOGORDO, NM 88311-0576
PO BOX 577, ALAMOGORDO, NM 88311-0577
PO BOX 578, ALAMOGORDO, NM 88311-0578
PO BOX 579, ALAMOGORDO, NM 88311-0579
PO BOX 580, ALAMOGORDO, NM 88311-0580
PO BOX 581, ALAMOGORDO, NM 88311-0581
PO BOX 582, ALAMOGORDO, NM 88311-0582
PO BOX 583, ALAMOGORDO, NM 88311-0583
PO BOX 584, ALAMOGORDO, NM 88311-0584
PO BOX 585, ALAMOGORDO, NM 88311-0585
PO BOX 586, ALAMOGORDO, NM 88311-0586
PO BOX 587, ALAMOGORDO, NM 88311-0587
PO BOX 588, ALAMOGORDO, NM 88311-0588
PO BOX 589, ALAMOGORDO, NM 88311-0589
PO BOX 590, ALAMOGORDO, NM 88311-0590
PO BOX 591, ALAMOGORDO, NM 88311-0591
PO BOX 592, ALAMOGORDO, NM 88311-0592
PO BOX 593, ALAMOGORDO, NM 88311-0593
PO BOX 594, ALAMOGORDO, NM 88311-0594
PO BOX 595, ALAMOGORDO, NM 88311-0595
PO BOX 596, ALAMOGORDO, NM 88311-0596
PO BOX 597, ALAMOGORDO, NM 88311-0597
PO BOX 598, ALAMOGORDO, NM 88311-0598
PO BOX 599, ALAMOGORDO, NM 88311-0599
PO BOX 600, ALAMOGORDO, NM 88311-0600
PO BOX 601, ALAMOGORDO, NM 88311-0601
PO BOX 602, ALAMOGORDO, NM 88311-0602
PO BOX 603, ALAMOGORDO, NM 88311-0603
PO BOX 604, ALAMOGORDO, NM 88311-0604
PO BOX 605, ALAMOGORDO, NM 88311-0605
PO BOX 606, ALAMOGORDO, NM 88311-0606
PO BOX 607, ALAMOGORDO, NM 88311-0607
PO BOX 608, ALAMOGORDO, NM 88311-0608
PO BOX 609, ALAMOGORDO, NM 88311-0609
PO BOX 610, ALAMOGORDO, NM 88311-0610
PO BOX 611, ALAMOGORDO, NM 88311-0611
PO BOX 612, ALAMOGORDO, NM 88311-0612
PO BOX 613, ALAMOGORDO, NM 88311-0613
PO BOX 614, ALAMOGORDO, NM 88311-0614
PO BOX 615, ALAMOGORDO, NM 88311-0615
PO BOX 616, ALAMOGORDO, NM 88311-0616
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