Ang isang numero ng PO BOX ay maaaring mas mababa sa o higit sa apat na digit. Para sa mga kahon ng post office, ang pangkalahatang panuntunan ay ang bawat kahon ay may sariling ZIP + 4 code.
Ang huling apat na digit ay madalas na isa sa mga sumusunod:
1. Zero kasama ang huling tatlong mga numero ng numero ng kahon (eg. PO BOX 1001, Los Angeles CA 90001-0001).
2. Ang huling apat na digit ng numero ng kahon (eg. PO BOX 9991, Twin Peaks CA 92391-9991).
3. Kung ang numero ng kahon ay mas mababa sa apat na digit, sapat na mga zero ang inihanda sa harap ng numero ng kahon upang makabuo ng isang apat na digit na numero(eg. PO BOX 1, Shreveport LA 71161-0001).
Gayunpaman, walang pare-parehong panuntunan, ang zip code kasama ang apat ay para sa sanggunian lamang, ang ZIP + 4 code ay dapat na indibidwal na tiningnan para sa bawat kahon sa USPS offical website.
PO BOX 461, FERNANDINA BEACH, FL 32035-0461
PO BOX 462, FERNANDINA BEACH, FL 32035-0462
PO BOX 463, FERNANDINA BEACH, FL 32035-0463
PO BOX 464, FERNANDINA BEACH, FL 32035-0464
PO BOX 465, FERNANDINA BEACH, FL 32035-0465
PO BOX 466, FERNANDINA BEACH, FL 32035-0466
PO BOX 467, FERNANDINA BEACH, FL 32035-0467
PO BOX 468, FERNANDINA BEACH, FL 32035-0468
PO BOX 469, FERNANDINA BEACH, FL 32035-0469
PO BOX 470, FERNANDINA BEACH, FL 32035-0470
PO BOX 471, FERNANDINA BEACH, FL 32035-0471
PO BOX 472, FERNANDINA BEACH, FL 32035-0472
PO BOX 473, FERNANDINA BEACH, FL 32035-0473
PO BOX 474, FERNANDINA BEACH, FL 32035-0474
PO BOX 475, FERNANDINA BEACH, FL 32035-0475
PO BOX 476, FERNANDINA BEACH, FL 32035-0476
PO BOX 477, FERNANDINA BEACH, FL 32035-0477
PO BOX 478, FERNANDINA BEACH, FL 32035-0478
PO BOX 479, FERNANDINA BEACH, FL 32035-0479
PO BOX 480, FERNANDINA BEACH, FL 32035-0480
PO BOX 481, FERNANDINA BEACH, FL 32035-0481
PO BOX 482, FERNANDINA BEACH, FL 32035-0482
PO BOX 483, FERNANDINA BEACH, FL 32035-0483
PO BOX 484, FERNANDINA BEACH, FL 32035-0484
PO BOX 485, FERNANDINA BEACH, FL 32035-0485
PO BOX 486, FERNANDINA BEACH, FL 32035-0486
PO BOX 487, FERNANDINA BEACH, FL 32035-0487
PO BOX 488, FERNANDINA BEACH, FL 32035-0488
PO BOX 489, FERNANDINA BEACH, FL 32035-0489
PO BOX 490, FERNANDINA BEACH, FL 32035-0490
PO BOX 491, FERNANDINA BEACH, FL 32035-0491
PO BOX 492, FERNANDINA BEACH, FL 32035-0492
PO BOX 493, FERNANDINA BEACH, FL 32035-0493
PO BOX 494, FERNANDINA BEACH, FL 32035-0494
PO BOX 495, FERNANDINA BEACH, FL 32035-0495
PO BOX 496, FERNANDINA BEACH, FL 32035-0496
PO BOX 497, FERNANDINA BEACH, FL 32035-0497
PO BOX 498, FERNANDINA BEACH, FL 32035-0498
PO BOX 499, FERNANDINA BEACH, FL 32035-0499
PO BOX 500, FERNANDINA BEACH, FL 32035-0500
PO BOX 501, FERNANDINA BEACH, FL 32035-0501
PO BOX 502, FERNANDINA BEACH, FL 32035-0502
PO BOX 503, FERNANDINA BEACH, FL 32035-0503
PO BOX 504, FERNANDINA BEACH, FL 32035-0504
PO BOX 505, FERNANDINA BEACH, FL 32035-0505
PO BOX 506, FERNANDINA BEACH, FL 32035-0506
PO BOX 507, FERNANDINA BEACH, FL 32035-0507
PO BOX 508, FERNANDINA BEACH, FL 32035-0508
PO BOX 509, FERNANDINA BEACH, FL 32035-0509
PO BOX 510, FERNANDINA BEACH, FL 32035-0510
PO BOX 511, FERNANDINA BEACH, FL 32035-0511
PO BOX 512, FERNANDINA BEACH, FL 32035-0512
PO BOX 513, FERNANDINA BEACH, FL 32035-0513
PO BOX 514, FERNANDINA BEACH, FL 32035-0514
PO BOX 515, FERNANDINA BEACH, FL 32035-0515
PO BOX 516, FERNANDINA BEACH, FL 32035-0516
PO BOX 517, FERNANDINA BEACH, FL 32035-0517
PO BOX 518, FERNANDINA BEACH, FL 32035-0518
PO BOX 519, FERNANDINA BEACH, FL 32035-0519
PO BOX 520, FERNANDINA BEACH, FL 32035-0520
PO BOX 521, FERNANDINA BEACH, FL 32035-0521
PO BOX 522, FERNANDINA BEACH, FL 32035-0522
PO BOX 523, FERNANDINA BEACH, FL 32035-0523
PO BOX 524, FERNANDINA BEACH, FL 32035-0524
PO BOX 525, FERNANDINA BEACH, FL 32035-0525
PO BOX 526, FERNANDINA BEACH, FL 32035-0526
PO BOX 527, FERNANDINA BEACH, FL 32035-0527
PO BOX 528, FERNANDINA BEACH, FL 32035-0528
PO BOX 529, FERNANDINA BEACH, FL 32035-0529
PO BOX 530, FERNANDINA BEACH, FL 32035-0530
PO BOX 531, FERNANDINA BEACH, FL 32035-0531
PO BOX 532, FERNANDINA BEACH, FL 32035-0532
PO BOX 533, FERNANDINA BEACH, FL 32035-0533
PO BOX 534, FERNANDINA BEACH, FL 32035-0534
PO BOX 535, FERNANDINA BEACH, FL 32035-0535
PO BOX 536, FERNANDINA BEACH, FL 32035-0536
PO BOX 537, FERNANDINA BEACH, FL 32035-0537
PO BOX 538, FERNANDINA BEACH, FL 32035-0538
PO BOX 539, FERNANDINA BEACH, FL 32035-0539
PO BOX 540, FERNANDINA BEACH, FL 32035-0540
PO BOX 541, FERNANDINA BEACH, FL 32035-0541
PO BOX 542, FERNANDINA BEACH, FL 32035-0542
PO BOX 543, FERNANDINA BEACH, FL 32035-0543
PO BOX 544, FERNANDINA BEACH, FL 32035-0544
PO BOX 545, FERNANDINA BEACH, FL 32035-0545
PO BOX 546, FERNANDINA BEACH, FL 32035-0546
PO BOX 547, FERNANDINA BEACH, FL 32035-0547
PO BOX 548, FERNANDINA BEACH, FL 32035-0548
PO BOX 549, FERNANDINA BEACH, FL 32035-0549
PO BOX 550, FERNANDINA BEACH, FL 32035-0550
PO BOX 551, FERNANDINA BEACH, FL 32035-0551
PO BOX 552, FERNANDINA BEACH, FL 32035-0552
PO BOX 553, FERNANDINA BEACH, FL 32035-0553
PO BOX 554, FERNANDINA BEACH, FL 32035-0554
PO BOX 555, FERNANDINA BEACH, FL 32035-0555
PO BOX 556, FERNANDINA BEACH, FL 32035-0556
PO BOX 557, FERNANDINA BEACH, FL 32035-0557
PO BOX 558, FERNANDINA BEACH, FL 32035-0558
PO BOX 559, FERNANDINA BEACH, FL 32035-0559
PO BOX 560, FERNANDINA BEACH, FL 32035-0560
PO BOX 561, FERNANDINA BEACH, FL 32035-0561
PO BOX 562, FERNANDINA BEACH, FL 32035-0562
PO BOX 563, FERNANDINA BEACH, FL 32035-0563
PO BOX 564, FERNANDINA BEACH, FL 32035-0564
PO BOX 565, FERNANDINA BEACH, FL 32035-0565
PO BOX 566, FERNANDINA BEACH, FL 32035-0566
PO BOX 567, FERNANDINA BEACH, FL 32035-0567
PO BOX 568, FERNANDINA BEACH, FL 32035-0568
PO BOX 569, FERNANDINA BEACH, FL 32035-0569
PO BOX 570, FERNANDINA BEACH, FL 32035-0570
PO BOX 571, FERNANDINA BEACH, FL 32035-0571
PO BOX 572, FERNANDINA BEACH, FL 32035-0572
PO BOX 573, FERNANDINA BEACH, FL 32035-0573
PO BOX 574, FERNANDINA BEACH, FL 32035-0574
PO BOX 575, FERNANDINA BEACH, FL 32035-0575
PO BOX 576, FERNANDINA BEACH, FL 32035-0576
PO BOX 577, FERNANDINA BEACH, FL 32035-0577
PO BOX 578, FERNANDINA BEACH, FL 32035-0578
PO BOX 579, FERNANDINA BEACH, FL 32035-0579
PO BOX 580, FERNANDINA BEACH, FL 32035-0580
PO BOX 581, FERNANDINA BEACH, FL 32035-0581
PO BOX 582, FERNANDINA BEACH, FL 32035-0582
PO BOX 583, FERNANDINA BEACH, FL 32035-0583
PO BOX 584, FERNANDINA BEACH, FL 32035-0584
PO BOX 585, FERNANDINA BEACH, FL 32035-0585
PO BOX 586, FERNANDINA BEACH, FL 32035-0586
PO BOX 587, FERNANDINA BEACH, FL 32035-0587
PO BOX 588, FERNANDINA BEACH, FL 32035-0588
PO BOX 589, FERNANDINA BEACH, FL 32035-0589
PO BOX 590, FERNANDINA BEACH, FL 32035-0590
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