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, ATLANTIC BEACH, NC 28512-0421
PO BOX 422, ATLANTIC BEACH, NC 28512-0422
PO BOX 423, ATLANTIC BEACH, NC 28512-0423
PO BOX 424, ATLANTIC BEACH, NC 28512-0424
PO BOX 425, ATLANTIC BEACH, NC 28512-0425
PO BOX 426, ATLANTIC BEACH, NC 28512-0426
PO BOX 427, ATLANTIC BEACH, NC 28512-0427
PO BOX 428, ATLANTIC BEACH, NC 28512-0428
PO BOX 429, ATLANTIC BEACH, NC 28512-0429
PO BOX 430, ATLANTIC BEACH, NC 28512-0430
PO BOX 431, ATLANTIC BEACH, NC 28512-0431
PO BOX 432, ATLANTIC BEACH, NC 28512-0432
PO BOX 433, ATLANTIC BEACH, NC 28512-0433
PO BOX 434, ATLANTIC BEACH, NC 28512-0434
PO BOX 435, ATLANTIC BEACH, NC 28512-0435
PO BOX 436, ATLANTIC BEACH, NC 28512-0436
PO BOX 437, ATLANTIC BEACH, NC 28512-0437
PO BOX 438, ATLANTIC BEACH, NC 28512-0438
PO BOX 439, ATLANTIC BEACH, NC 28512-0439
PO BOX 440, ATLANTIC BEACH, NC 28512-0440
PO BOX 441, ATLANTIC BEACH, NC 28512-0441
PO BOX 442, ATLANTIC BEACH, NC 28512-0442
PO BOX 443, ATLANTIC BEACH, NC 28512-0443
PO BOX 444, ATLANTIC BEACH, NC 28512-0444
PO BOX 445, ATLANTIC BEACH, NC 28512-0445
PO BOX 446, ATLANTIC BEACH, NC 28512-0446
PO BOX 447, ATLANTIC BEACH, NC 28512-0447
PO BOX 448, ATLANTIC BEACH, NC 28512-0448
PO BOX 449, ATLANTIC BEACH, NC 28512-0449
PO BOX 450, ATLANTIC BEACH, NC 28512-0450
PO BOX 451, ATLANTIC BEACH, NC 28512-0451
PO BOX 452, ATLANTIC BEACH, NC 28512-0452
PO BOX 453, ATLANTIC BEACH, NC 28512-0453
PO BOX 454, ATLANTIC BEACH, NC 28512-0454
PO BOX 455, ATLANTIC BEACH, NC 28512-0455
PO BOX 456, ATLANTIC BEACH, NC 28512-0456
PO BOX 457, ATLANTIC BEACH, NC 28512-0457
PO BOX 458, ATLANTIC BEACH, NC 28512-0458
PO BOX 459, ATLANTIC BEACH, NC 28512-0459
PO BOX 460, ATLANTIC BEACH, NC 28512-0460
PO BOX 461, ATLANTIC BEACH, NC 28512-0461
PO BOX 462, ATLANTIC BEACH, NC 28512-0462
PO BOX 463, ATLANTIC BEACH, NC 28512-0463
PO BOX 464, ATLANTIC BEACH, NC 28512-0464
PO BOX 465, ATLANTIC BEACH, NC 28512-0465
PO BOX 466, ATLANTIC BEACH, NC 28512-0466
PO BOX 467, ATLANTIC BEACH, NC 28512-0467
PO BOX 468, ATLANTIC BEACH, NC 28512-0468
PO BOX 469, ATLANTIC BEACH, NC 28512-0469
PO BOX 470, ATLANTIC BEACH, NC 28512-0470
PO BOX 471, ATLANTIC BEACH, NC 28512-0471
PO BOX 472, ATLANTIC BEACH, NC 28512-0472
PO BOX 473, ATLANTIC BEACH, NC 28512-0473
PO BOX 474, ATLANTIC BEACH, NC 28512-0474
PO BOX 475, ATLANTIC BEACH, NC 28512-0475
PO BOX 476, ATLANTIC BEACH, NC 28512-0476
PO BOX 477, ATLANTIC BEACH, NC 28512-0477
PO BOX 478, ATLANTIC BEACH, NC 28512-0478
PO BOX 479, ATLANTIC BEACH, NC 28512-0479
PO BOX 480, ATLANTIC BEACH, NC 28512-0480
PO BOX 481, ATLANTIC BEACH, NC 28512-0481
PO BOX 482, ATLANTIC BEACH, NC 28512-0482
PO BOX 483, ATLANTIC BEACH, NC 28512-0483
PO BOX 484, ATLANTIC BEACH, NC 28512-0484
PO BOX 485, ATLANTIC BEACH, NC 28512-0485
PO BOX 486, ATLANTIC BEACH, NC 28512-0486
PO BOX 487, ATLANTIC BEACH, NC 28512-0487
PO BOX 488, ATLANTIC BEACH, NC 28512-0488
PO BOX 489, ATLANTIC BEACH, NC 28512-0489
PO BOX 490, ATLANTIC BEACH, NC 28512-0490
PO BOX 491, ATLANTIC BEACH, NC 28512-0491
PO BOX 492, ATLANTIC BEACH, NC 28512-0492
PO BOX 493, ATLANTIC BEACH, NC 28512-0493
PO BOX 494, ATLANTIC BEACH, NC 28512-0494
PO BOX 495, ATLANTIC BEACH, NC 28512-0495
PO BOX 496, ATLANTIC BEACH, NC 28512-0496
PO BOX 497, ATLANTIC BEACH, NC 28512-0497
PO BOX 498, ATLANTIC BEACH, NC 28512-0498
PO BOX 499, ATLANTIC BEACH, NC 28512-0499
PO BOX 500, ATLANTIC BEACH, NC 28512-0500
PO BOX 501, ATLANTIC BEACH, NC 28512-0501
PO BOX 502, ATLANTIC BEACH, NC 28512-0502
PO BOX 503, ATLANTIC BEACH, NC 28512-0503
PO BOX 504, ATLANTIC BEACH, NC 28512-0504
PO BOX 505, ATLANTIC BEACH, NC 28512-0505
PO BOX 506, ATLANTIC BEACH, NC 28512-0506
PO BOX 507, ATLANTIC BEACH, NC 28512-0507
PO BOX 508, ATLANTIC BEACH, NC 28512-0508
PO BOX 509, ATLANTIC BEACH, NC 28512-0509
PO BOX 510, ATLANTIC BEACH, NC 28512-0510
PO BOX 511, ATLANTIC BEACH, NC 28512-0511
PO BOX 512, ATLANTIC BEACH, NC 28512-0512
PO BOX 513, ATLANTIC BEACH, NC 28512-0513
PO BOX 514, ATLANTIC BEACH, NC 28512-0514
PO BOX 515, ATLANTIC BEACH, NC 28512-0515
PO BOX 516, ATLANTIC BEACH, NC 28512-0516
PO BOX 517, ATLANTIC BEACH, NC 28512-0517
PO BOX 518, ATLANTIC BEACH, NC 28512-0518
PO BOX 519, ATLANTIC BEACH, NC 28512-0519
PO BOX 520, ATLANTIC BEACH, NC 28512-0520
PO BOX 521, ATLANTIC BEACH, NC 28512-0521
PO BOX 522, ATLANTIC BEACH, NC 28512-0522
PO BOX 523, ATLANTIC BEACH, NC 28512-0523
PO BOX 524, ATLANTIC BEACH, NC 28512-0524
PO BOX 525, ATLANTIC BEACH, NC 28512-0525
PO BOX 526, ATLANTIC BEACH, NC 28512-0526
PO BOX 527, ATLANTIC BEACH, NC 28512-0527
PO BOX 528, ATLANTIC BEACH, NC 28512-0528
PO BOX 529, ATLANTIC BEACH, NC 28512-0529
PO BOX 530, ATLANTIC BEACH, NC 28512-0530
PO BOX 531, ATLANTIC BEACH, NC 28512-0531
PO BOX 532, ATLANTIC BEACH, NC 28512-0532
PO BOX 533, ATLANTIC BEACH, NC 28512-0533
PO BOX 534, ATLANTIC BEACH, NC 28512-0534
PO BOX 535, ATLANTIC BEACH, NC 28512-0535
PO BOX 536, ATLANTIC BEACH, NC 28512-0536
PO BOX 537, ATLANTIC BEACH, NC 28512-0537
PO BOX 538, ATLANTIC BEACH, NC 28512-0538
PO BOX 539, ATLANTIC BEACH, NC 28512-0539
PO BOX 540, ATLANTIC BEACH, NC 28512-0540
PO BOX 541, ATLANTIC BEACH, NC 28512-0541
PO BOX 542, ATLANTIC BEACH, NC 28512-0542
PO BOX 543, ATLANTIC BEACH, NC 28512-0543
PO BOX 544, ATLANTIC BEACH, NC 28512-0544
PO BOX 545, ATLANTIC BEACH, NC 28512-0545
PO BOX 546, ATLANTIC BEACH, NC 28512-0546
PO BOX 547, ATLANTIC BEACH, NC 28512-0547
PO BOX 548, ATLANTIC BEACH, NC 28512-0548
PO BOX 549, ATLANTIC BEACH, NC 28512-0549
PO BOX 550, ATLANTIC BEACH, NC 28512-0550
PO BOX 551, ATLANTIC BEACH, NC 28512-0551
PO BOX 552, ATLANTIC BEACH, NC 28512-0552
PO BOX 553, ATLANTIC BEACH, NC 28512-0553
PO BOX 554, ATLANTIC BEACH, NC 28512-0554
PO BOX 555, ATLANTIC BEACH, NC 28512-0555
PO BOX 556, ATLANTIC BEACH, NC 28512-0556
PO BOX 557, ATLANTIC BEACH, NC 28512-0557
PO BOX 558, ATLANTIC BEACH, NC 28512-0558
PO BOX 559, ATLANTIC BEACH, NC 28512-0559
PO BOX 560, ATLANTIC BEACH, NC 28512-0560
PO BOX 561, ATLANTIC BEACH, NC 28512-0561
PO BOX 562, ATLANTIC BEACH, NC 28512-0562
PO BOX 563, ATLANTIC BEACH, NC 28512-0563
PO BOX 564, ATLANTIC BEACH, NC 28512-0564
PO BOX 565, ATLANTIC BEACH, NC 28512-0565
PO BOX 566, ATLANTIC BEACH, NC 28512-0566
PO BOX 567, ATLANTIC BEACH, NC 28512-0567
PO BOX 568, ATLANTIC BEACH, NC 28512-0568
PO BOX 569, ATLANTIC BEACH, NC 28512-0569
PO BOX 570, ATLANTIC BEACH, NC 28512-0570
PO BOX 571, ATLANTIC BEACH, NC 28512-0571
PO BOX 572, ATLANTIC BEACH, NC 28512-0572
PO BOX 573, ATLANTIC BEACH, NC 28512-0573
PO BOX 574, ATLANTIC BEACH, NC 28512-0574
PO BOX 575, ATLANTIC BEACH, NC 28512-0575
PO BOX 576, ATLANTIC BEACH, NC 28512-0576
PO BOX 577, ATLANTIC BEACH, NC 28512-0577
PO BOX 578, ATLANTIC BEACH, NC 28512-0578
PO BOX 579, ATLANTIC BEACH, NC 28512-0579
PO BOX 580, ATLANTIC BEACH, NC 28512-0580
PO BOX 581, ATLANTIC BEACH, NC 28512-0581
PO BOX 582, ATLANTIC BEACH, NC 28512-0582
PO BOX 583, ATLANTIC BEACH, NC 28512-0583
PO BOX 584, ATLANTIC BEACH, NC 28512-0584
PO BOX 585, ATLANTIC BEACH, NC 28512-0585
PO BOX 586, ATLANTIC BEACH, NC 28512-0586
PO BOX 587, ATLANTIC BEACH, NC 28512-0587
PO BOX 588, ATLANTIC BEACH, NC 28512-0588
PO BOX 589, ATLANTIC BEACH, NC 28512-0589
PO BOX 590, ATLANTIC BEACH, NC 28512-0590
PO BOX 591, ATLANTIC BEACH, NC 28512-0591
PO BOX 592, ATLANTIC BEACH, NC 28512-0592
PO BOX 593, ATLANTIC BEACH, NC 28512-0593
PO BOX 594, ATLANTIC BEACH, NC 28512-0594
PO BOX 595, ATLANTIC BEACH, NC 28512-0595
PO BOX 596, ATLANTIC BEACH, NC 28512-0596
PO BOX 597, ATLANTIC BEACH, NC 28512-0597
PO BOX 598, ATLANTIC BEACH, NC 28512-0598
PO BOX 599, ATLANTIC BEACH, NC 28512-0599
PO BOX 600, ATLANTIC BEACH, NC 28512-0600
PO BOX 601, ATLANTIC BEACH, NC 28512-0601
PO BOX 602, ATLANTIC BEACH, NC 28512-0602
PO BOX 603, ATLANTIC BEACH, NC 28512-0603
PO BOX 604, ATLANTIC BEACH, NC 28512-0604
PO BOX 605, ATLANTIC BEACH, NC 28512-0605
PO BOX 606, ATLANTIC BEACH, NC 28512-0606
PO BOX 607, ATLANTIC BEACH, NC 28512-0607
PO BOX 608, ATLANTIC BEACH, NC 28512-0608
PO BOX 609, ATLANTIC BEACH, NC 28512-0609
PO BOX 610, ATLANTIC BEACH, NC 28512-0610
PO BOX 611, ATLANTIC BEACH, NC 28512-0611
PO BOX 612, ATLANTIC BEACH, NC 28512-0612
PO BOX 613, ATLANTIC BEACH, NC 28512-0613
PO BOX 614, ATLANTIC BEACH, NC 28512-0614
PO BOX 615, ATLANTIC BEACH, NC 28512-0615
PO BOX 616, ATLANTIC BEACH, NC 28512-0616
PO BOX 617, ATLANTIC BEACH, NC 28512-0617
PO BOX 618, ATLANTIC BEACH, NC 28512-0618
PO BOX 619, ATLANTIC BEACH, NC 28512-0619
PO BOX 620, ATLANTIC BEACH, NC 28512-0620
PO BOX 621, ATLANTIC BEACH, NC 28512-0621
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