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, SAN BERNARDINO, CA 92402-0441
PO BOX 442, SAN BERNARDINO, CA 92402-0442
PO BOX 443, SAN BERNARDINO, CA 92402-0443
PO BOX 444, SAN BERNARDINO, CA 92402-0444
PO BOX 445, SAN BERNARDINO, CA 92402-0445
PO BOX 446, SAN BERNARDINO, CA 92402-0446
PO BOX 447, SAN BERNARDINO, CA 92402-0447
PO BOX 448, SAN BERNARDINO, CA 92402-0448
PO BOX 449, SAN BERNARDINO, CA 92402-0449
PO BOX 450, SAN BERNARDINO, CA 92402-0450
PO BOX 451, SAN BERNARDINO, CA 92402-0451
PO BOX 452, SAN BERNARDINO, CA 92402-0452
PO BOX 453, SAN BERNARDINO, CA 92402-0453
PO BOX 454, SAN BERNARDINO, CA 92402-0454
PO BOX 455, SAN BERNARDINO, CA 92402-0455
PO BOX 456, SAN BERNARDINO, CA 92402-0456
PO BOX 457, SAN BERNARDINO, CA 92402-0457
PO BOX 458, SAN BERNARDINO, CA 92402-0458
PO BOX 459, SAN BERNARDINO, CA 92402-0459
PO BOX 460, SAN BERNARDINO, CA 92402-0460
PO BOX 461, SAN BERNARDINO, CA 92402-0461
PO BOX 462, SAN BERNARDINO, CA 92402-0462
PO BOX 463, SAN BERNARDINO, CA 92402-0463
PO BOX 464, SAN BERNARDINO, CA 92402-0464
PO BOX 465, SAN BERNARDINO, CA 92402-0465
PO BOX 466, SAN BERNARDINO, CA 92402-0466
PO BOX 467, SAN BERNARDINO, CA 92402-0467
PO BOX 468, SAN BERNARDINO, CA 92402-0468
PO BOX 469, SAN BERNARDINO, CA 92402-0469
PO BOX 470, SAN BERNARDINO, CA 92402-0470
PO BOX 471, SAN BERNARDINO, CA 92402-0471
PO BOX 472, SAN BERNARDINO, CA 92402-0472
PO BOX 473, SAN BERNARDINO, CA 92402-0473
PO BOX 474, SAN BERNARDINO, CA 92402-0474
PO BOX 475, SAN BERNARDINO, CA 92402-0475
PO BOX 476, SAN BERNARDINO, CA 92402-0476
PO BOX 477, SAN BERNARDINO, CA 92402-0477
PO BOX 478, SAN BERNARDINO, CA 92402-0478
PO BOX 479, SAN BERNARDINO, CA 92402-0479
PO BOX 480, SAN BERNARDINO, CA 92402-0480
PO BOX 481, SAN BERNARDINO, CA 92402-0481
PO BOX 482, SAN BERNARDINO, CA 92402-0482
PO BOX 483, SAN BERNARDINO, CA 92402-0483
PO BOX 484, SAN BERNARDINO, CA 92402-0484
PO BOX 485, SAN BERNARDINO, CA 92402-0485
PO BOX 486, SAN BERNARDINO, CA 92402-0486
PO BOX 487, SAN BERNARDINO, CA 92402-0487
PO BOX 488, SAN BERNARDINO, CA 92402-0488
PO BOX 489, SAN BERNARDINO, CA 92402-0489
PO BOX 490, SAN BERNARDINO, CA 92402-0490
PO BOX 491, SAN BERNARDINO, CA 92402-0491
PO BOX 492, SAN BERNARDINO, CA 92402-0492
PO BOX 493, SAN BERNARDINO, CA 92402-0493
PO BOX 494, SAN BERNARDINO, CA 92402-0494
PO BOX 495, SAN BERNARDINO, CA 92402-0495
PO BOX 496, SAN BERNARDINO, CA 92402-0496
PO BOX 497, SAN BERNARDINO, CA 92402-0497
PO BOX 498, SAN BERNARDINO, CA 92402-0498
PO BOX 499, SAN BERNARDINO, CA 92402-0499
PO BOX 500, SAN BERNARDINO, CA 92402-0500
PO BOX 501, SAN BERNARDINO, CA 92402-0501
PO BOX 502, SAN BERNARDINO, CA 92402-0502
PO BOX 503, SAN BERNARDINO, CA 92402-0503
PO BOX 504, SAN BERNARDINO, CA 92402-0504
PO BOX 505, SAN BERNARDINO, CA 92402-0505
PO BOX 506, SAN BERNARDINO, CA 92402-0506
PO BOX 507, SAN BERNARDINO, CA 92402-0507
PO BOX 508, SAN BERNARDINO, CA 92402-0508
PO BOX 509, SAN BERNARDINO, CA 92402-0509
PO BOX 510, SAN BERNARDINO, CA 92402-0510
PO BOX 511, SAN BERNARDINO, CA 92402-0511
PO BOX 512, SAN BERNARDINO, CA 92402-0512
PO BOX 513, SAN BERNARDINO, CA 92402-0513
PO BOX 514, SAN BERNARDINO, CA 92402-0514
PO BOX 515, SAN BERNARDINO, CA 92402-0515
PO BOX 516, SAN BERNARDINO, CA 92402-0516
PO BOX 517, SAN BERNARDINO, CA 92402-0517
PO BOX 518, SAN BERNARDINO, CA 92402-0518
PO BOX 519, SAN BERNARDINO, CA 92402-0519
PO BOX 520, SAN BERNARDINO, CA 92402-0520
PO BOX 521, SAN BERNARDINO, CA 92402-0521
PO BOX 522, SAN BERNARDINO, CA 92402-0522
PO BOX 523, SAN BERNARDINO, CA 92402-0523
PO BOX 524, SAN BERNARDINO, CA 92402-0524
PO BOX 525, SAN BERNARDINO, CA 92402-0525
PO BOX 526, SAN BERNARDINO, CA 92402-0526
PO BOX 527, SAN BERNARDINO, CA 92402-0527
PO BOX 528, SAN BERNARDINO, CA 92402-0528
PO BOX 529, SAN BERNARDINO, CA 92402-0529
PO BOX 530, SAN BERNARDINO, CA 92402-0530
PO BOX 531, SAN BERNARDINO, CA 92402-0531
PO BOX 532, SAN BERNARDINO, CA 92402-0532
PO BOX 533, SAN BERNARDINO, CA 92402-0533
PO BOX 534, SAN BERNARDINO, CA 92402-0534
PO BOX 535, SAN BERNARDINO, CA 92402-0535
PO BOX 536, SAN BERNARDINO, CA 92402-0536
PO BOX 537, SAN BERNARDINO, CA 92402-0537
PO BOX 538, SAN BERNARDINO, CA 92402-0538
PO BOX 539, SAN BERNARDINO, CA 92402-0539
PO BOX 540, SAN BERNARDINO, CA 92402-0540
PO BOX 541, SAN BERNARDINO, CA 92402-0541
PO BOX 542, SAN BERNARDINO, CA 92402-0542
PO BOX 543, SAN BERNARDINO, CA 92402-0543
PO BOX 544, SAN BERNARDINO, CA 92402-0544
PO BOX 545, SAN BERNARDINO, CA 92402-0545
PO BOX 546, SAN BERNARDINO, CA 92402-0546
PO BOX 547, SAN BERNARDINO, CA 92402-0547
PO BOX 548, SAN BERNARDINO, CA 92402-0548
PO BOX 549, SAN BERNARDINO, CA 92402-0549
PO BOX 550, SAN BERNARDINO, CA 92402-0550
PO BOX 551, SAN BERNARDINO, CA 92402-0551
PO BOX 552, SAN BERNARDINO, CA 92402-0552
PO BOX 553, SAN BERNARDINO, CA 92402-0553
PO BOX 554, SAN BERNARDINO, CA 92402-0554
PO BOX 555, SAN BERNARDINO, CA 92402-0555
PO BOX 556, SAN BERNARDINO, CA 92402-0556
PO BOX 557, SAN BERNARDINO, CA 92402-0557
PO BOX 558, SAN BERNARDINO, CA 92402-0558
PO BOX 559, SAN BERNARDINO, CA 92402-0559
PO BOX 560, SAN BERNARDINO, CA 92402-0560
PO BOX 561, SAN BERNARDINO, CA 92402-0561
PO BOX 562, SAN BERNARDINO, CA 92402-0562
PO BOX 563, SAN BERNARDINO, CA 92402-0563
PO BOX 564, SAN BERNARDINO, CA 92402-0564
PO BOX 565, SAN BERNARDINO, CA 92402-0565
PO BOX 566, SAN BERNARDINO, CA 92402-0566
PO BOX 567, SAN BERNARDINO, CA 92402-0567
PO BOX 568, SAN BERNARDINO, CA 92402-0568
PO BOX 569, SAN BERNARDINO, CA 92402-0569
PO BOX 570, SAN BERNARDINO, CA 92402-0570
PO BOX 571, SAN BERNARDINO, CA 92402-0571
Add new comment