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 481, NEW SMYRNA BEACH, FL 32170-0481
PO BOX 482, NEW SMYRNA BEACH, FL 32170-0482
PO BOX 483, NEW SMYRNA BEACH, FL 32170-0483
PO BOX 484, NEW SMYRNA BEACH, FL 32170-0484
PO BOX 485, NEW SMYRNA BEACH, FL 32170-0485
PO BOX 486, NEW SMYRNA BEACH, FL 32170-0486
PO BOX 487, NEW SMYRNA BEACH, FL 32170-0487
PO BOX 488, NEW SMYRNA BEACH, FL 32170-0488
PO BOX 489, NEW SMYRNA BEACH, FL 32170-0489
PO BOX 490, NEW SMYRNA BEACH, FL 32170-0490
PO BOX 491, NEW SMYRNA BEACH, FL 32170-0491
PO BOX 492, NEW SMYRNA BEACH, FL 32170-0492
PO BOX 493, NEW SMYRNA BEACH, FL 32170-0493
PO BOX 494, NEW SMYRNA BEACH, FL 32170-0494
PO BOX 495, NEW SMYRNA BEACH, FL 32170-0495
PO BOX 496, NEW SMYRNA BEACH, FL 32170-0496
PO BOX 497, NEW SMYRNA BEACH, FL 32170-0497
PO BOX 498, NEW SMYRNA BEACH, FL 32170-0498
PO BOX 499, NEW SMYRNA BEACH, FL 32170-0499
PO BOX 500, NEW SMYRNA BEACH, FL 32170-0500
PO BOX 501, NEW SMYRNA BEACH, FL 32170-0501
PO BOX 502, NEW SMYRNA BEACH, FL 32170-0502
PO BOX 503, NEW SMYRNA BEACH, FL 32170-0503
PO BOX 504, NEW SMYRNA BEACH, FL 32170-0504
PO BOX 505, NEW SMYRNA BEACH, FL 32170-0505
PO BOX 506, NEW SMYRNA BEACH, FL 32170-0506
PO BOX 507, NEW SMYRNA BEACH, FL 32170-0507
PO BOX 508, NEW SMYRNA BEACH, FL 32170-0508
PO BOX 509, NEW SMYRNA BEACH, FL 32170-0509
PO BOX 510, NEW SMYRNA BEACH, FL 32170-0510
PO BOX 511, NEW SMYRNA BEACH, FL 32170-0511
PO BOX 512, NEW SMYRNA BEACH, FL 32170-0512
PO BOX 513, NEW SMYRNA BEACH, FL 32170-0513
PO BOX 514, NEW SMYRNA BEACH, FL 32170-0514
PO BOX 515, NEW SMYRNA BEACH, FL 32170-0515
PO BOX 516, NEW SMYRNA BEACH, FL 32170-0516
PO BOX 517, NEW SMYRNA BEACH, FL 32170-0517
PO BOX 518, NEW SMYRNA BEACH, FL 32170-0518
PO BOX 519, NEW SMYRNA BEACH, FL 32170-0519
PO BOX 520, NEW SMYRNA BEACH, FL 32170-0520
PO BOX 521, NEW SMYRNA BEACH, FL 32170-0521
PO BOX 522, NEW SMYRNA BEACH, FL 32170-0522
PO BOX 523, NEW SMYRNA BEACH, FL 32170-0523
PO BOX 524, NEW SMYRNA BEACH, FL 32170-0524
PO BOX 525, NEW SMYRNA BEACH, FL 32170-0525
PO BOX 526, NEW SMYRNA BEACH, FL 32170-0526
PO BOX 527, NEW SMYRNA BEACH, FL 32170-0527
PO BOX 528, NEW SMYRNA BEACH, FL 32170-0528
PO BOX 529, NEW SMYRNA BEACH, FL 32170-0529
PO BOX 530, NEW SMYRNA BEACH, FL 32170-0530
PO BOX 531, NEW SMYRNA BEACH, FL 32170-0531
PO BOX 532, NEW SMYRNA BEACH, FL 32170-0532
PO BOX 533, NEW SMYRNA BEACH, FL 32170-0533
PO BOX 534, NEW SMYRNA BEACH, FL 32170-0534
PO BOX 535, NEW SMYRNA BEACH, FL 32170-0535
PO BOX 536, NEW SMYRNA BEACH, FL 32170-0536
PO BOX 537, NEW SMYRNA BEACH, FL 32170-0537
PO BOX 538, NEW SMYRNA BEACH, FL 32170-0538
PO BOX 539, NEW SMYRNA BEACH, FL 32170-0539
PO BOX 540, NEW SMYRNA BEACH, FL 32170-0540
PO BOX 541, NEW SMYRNA BEACH, FL 32170-0541
PO BOX 542, NEW SMYRNA BEACH, FL 32170-0542
PO BOX 543, NEW SMYRNA BEACH, FL 32170-0543
PO BOX 544, NEW SMYRNA BEACH, FL 32170-0544
PO BOX 545, NEW SMYRNA BEACH, FL 32170-0545
PO BOX 546, NEW SMYRNA BEACH, FL 32170-0546
PO BOX 547, NEW SMYRNA BEACH, FL 32170-0547
PO BOX 548, NEW SMYRNA BEACH, FL 32170-0548
PO BOX 549, NEW SMYRNA BEACH, FL 32170-0549
PO BOX 550, NEW SMYRNA BEACH, FL 32170-0550
PO BOX 551, NEW SMYRNA BEACH, FL 32170-0551
PO BOX 552, NEW SMYRNA BEACH, FL 32170-0552
PO BOX 553, NEW SMYRNA BEACH, FL 32170-0553
PO BOX 554, NEW SMYRNA BEACH, FL 32170-0554
PO BOX 555, NEW SMYRNA BEACH, FL 32170-0555
PO BOX 556, NEW SMYRNA BEACH, FL 32170-0556
PO BOX 557, NEW SMYRNA BEACH, FL 32170-0557
PO BOX 558, NEW SMYRNA BEACH, FL 32170-0558
PO BOX 559, NEW SMYRNA BEACH, FL 32170-0559
PO BOX 560, NEW SMYRNA BEACH, FL 32170-0560
PO BOX 561, NEW SMYRNA BEACH, FL 32170-0561
PO BOX 562, NEW SMYRNA BEACH, FL 32170-0562
PO BOX 563, NEW SMYRNA BEACH, FL 32170-0563
PO BOX 564, NEW SMYRNA BEACH, FL 32170-0564
PO BOX 565, NEW SMYRNA BEACH, FL 32170-0565
PO BOX 566, NEW SMYRNA BEACH, FL 32170-0566
PO BOX 567, NEW SMYRNA BEACH, FL 32170-0567
PO BOX 568, NEW SMYRNA BEACH, FL 32170-0568
PO BOX 569, NEW SMYRNA BEACH, FL 32170-0569
PO BOX 570, NEW SMYRNA BEACH, FL 32170-0570
PO BOX 571, NEW SMYRNA BEACH, FL 32170-0571
PO BOX 572, NEW SMYRNA BEACH, FL 32170-0572
PO BOX 573, NEW SMYRNA BEACH, FL 32170-0573
PO BOX 574, NEW SMYRNA BEACH, FL 32170-0574
PO BOX 575, NEW SMYRNA BEACH, FL 32170-0575
PO BOX 576, NEW SMYRNA BEACH, FL 32170-0576
PO BOX 577, NEW SMYRNA BEACH, FL 32170-0577
PO BOX 578, NEW SMYRNA BEACH, FL 32170-0578
PO BOX 579, NEW SMYRNA BEACH, FL 32170-0579
PO BOX 580, NEW SMYRNA BEACH, FL 32170-0580
PO BOX 581, NEW SMYRNA BEACH, FL 32170-0581
PO BOX 582, NEW SMYRNA BEACH, FL 32170-0582
PO BOX 583, NEW SMYRNA BEACH, FL 32170-0583
PO BOX 584, NEW SMYRNA BEACH, FL 32170-0584
PO BOX 585, NEW SMYRNA BEACH, FL 32170-0585
PO BOX 586, NEW SMYRNA BEACH, FL 32170-0586
PO BOX 587, NEW SMYRNA BEACH, FL 32170-0587
PO BOX 588, NEW SMYRNA BEACH, FL 32170-0588
PO BOX 589, NEW SMYRNA BEACH, FL 32170-0589
PO BOX 590, NEW SMYRNA BEACH, FL 32170-0590
PO BOX 591, NEW SMYRNA BEACH, FL 32170-0591
PO BOX 592, NEW SMYRNA BEACH, FL 32170-0592
PO BOX 593, NEW SMYRNA BEACH, FL 32170-0593
PO BOX 594, NEW SMYRNA BEACH, FL 32170-0594
PO BOX 595, NEW SMYRNA BEACH, FL 32170-0595
PO BOX 596, NEW SMYRNA BEACH, FL 32170-0596
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