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, VERNON, TX 76385-0481
PO BOX 482, VERNON, TX 76385-0482
PO BOX 483, VERNON, TX 76385-0483
PO BOX 484, VERNON, TX 76385-0484
PO BOX 485, VERNON, TX 76385-0485
PO BOX 486, VERNON, TX 76385-0486
PO BOX 487, VERNON, TX 76385-0487
PO BOX 488, VERNON, TX 76385-0488
PO BOX 489, VERNON, TX 76385-0489
PO BOX 490, VERNON, TX 76385-0490
PO BOX 491, VERNON, TX 76385-0491
PO BOX 492, VERNON, TX 76385-0492
PO BOX 493, VERNON, TX 76385-0493
PO BOX 494, VERNON, TX 76385-0494
PO BOX 495, VERNON, TX 76385-0495
PO BOX 496, VERNON, TX 76385-0496
PO BOX 497, VERNON, TX 76385-0497
PO BOX 498, VERNON, TX 76385-0498
PO BOX 499, VERNON, TX 76385-0499
PO BOX 500, VERNON, TX 76385-0500
PO BOX 501, VERNON, TX 76385-0501
PO BOX 502, VERNON, TX 76385-0502
PO BOX 503, VERNON, TX 76385-0503
PO BOX 504, VERNON, TX 76385-0504
PO BOX 505, VERNON, TX 76385-0505
PO BOX 506, VERNON, TX 76385-0506
PO BOX 507, VERNON, TX 76385-0507
PO BOX 508, VERNON, TX 76385-0508
PO BOX 509, VERNON, TX 76385-0509
PO BOX 510, VERNON, TX 76385-0510
PO BOX 511, VERNON, TX 76385-0511
PO BOX 512, VERNON, TX 76385-0512
PO BOX 513, VERNON, TX 76385-0513
PO BOX 514, VERNON, TX 76385-0514
PO BOX 515, VERNON, TX 76385-0515
PO BOX 516, VERNON, TX 76385-0516
PO BOX 517, VERNON, TX 76385-0517
PO BOX 518, VERNON, TX 76385-0518
PO BOX 519, VERNON, TX 76385-0519
PO BOX 520, VERNON, TX 76385-0520
PO BOX 521, VERNON, TX 76385-0521
PO BOX 522, VERNON, TX 76385-0522
PO BOX 523, VERNON, TX 76385-0523
PO BOX 524, VERNON, TX 76385-0524
PO BOX 525, VERNON, TX 76385-0525
PO BOX 526, VERNON, TX 76385-0526
PO BOX 527, VERNON, TX 76385-0527
PO BOX 528, VERNON, TX 76385-0528
PO BOX 529, VERNON, TX 76385-0529
PO BOX 530, VERNON, TX 76385-0530
PO BOX 531, VERNON, TX 76385-0531
PO BOX 532, VERNON, TX 76385-0532
PO BOX 533, VERNON, TX 76385-0533
PO BOX 534, VERNON, TX 76385-0534
PO BOX 535, VERNON, TX 76385-0535
PO BOX 536, VERNON, TX 76385-0536
PO BOX 537, VERNON, TX 76385-0537
PO BOX 538, VERNON, TX 76385-0538
PO BOX 539, VERNON, TX 76385-0539
PO BOX 540, VERNON, TX 76385-0540
PO BOX 541, VERNON, TX 76385-0541
PO BOX 542, VERNON, TX 76385-0542
PO BOX 543, VERNON, TX 76385-0543
PO BOX 544, VERNON, TX 76385-0544
PO BOX 545, VERNON, TX 76385-0545
PO BOX 546, VERNON, TX 76385-0546
PO BOX 547, VERNON, TX 76385-0547
PO BOX 548, VERNON, TX 76385-0548
PO BOX 549, VERNON, TX 76385-0549
PO BOX 550, VERNON, TX 76385-0550
PO BOX 551, VERNON, TX 76385-0551
PO BOX 552, VERNON, TX 76385-0552
PO BOX 553, VERNON, TX 76385-0553
PO BOX 554, VERNON, TX 76385-0554
PO BOX 555, VERNON, TX 76385-0555
PO BOX 556, VERNON, TX 76385-0556
PO BOX 557, VERNON, TX 76385-0557
PO BOX 558, VERNON, TX 76385-0558
PO BOX 559, VERNON, TX 76385-0559
PO BOX 560, VERNON, TX 76385-0560
PO BOX 561, VERNON, TX 76385-0561
PO BOX 562, VERNON, TX 76385-0562
PO BOX 563, VERNON, TX 76385-0563
PO BOX 564, VERNON, TX 76385-0564
PO BOX 565, VERNON, TX 76385-0565
PO BOX 566, VERNON, TX 76385-0566
PO BOX 567, VERNON, TX 76385-0567
PO BOX 568, VERNON, TX 76385-0568
PO BOX 569, VERNON, TX 76385-0569
PO BOX 570, VERNON, TX 76385-0570
PO BOX 571, VERNON, TX 76385-0571
PO BOX 572, VERNON, TX 76385-0572
PO BOX 573, VERNON, TX 76385-0573
PO BOX 574, VERNON, TX 76385-0574
PO BOX 575, VERNON, TX 76385-0575
PO BOX 576, VERNON, TX 76385-0576
PO BOX 577, VERNON, TX 76385-0577
PO BOX 578, VERNON, TX 76385-0578
PO BOX 579, VERNON, TX 76385-0579
PO BOX 580, VERNON, TX 76385-0580
PO BOX 581, VERNON, TX 76385-0581
PO BOX 582, VERNON, TX 76385-0582
PO BOX 583, VERNON, TX 76385-0583
PO BOX 584, VERNON, TX 76385-0584
PO BOX 585, VERNON, TX 76385-0585
PO BOX 586, VERNON, TX 76385-0586
PO BOX 587, VERNON, TX 76385-0587
PO BOX 588, VERNON, TX 76385-0588
PO BOX 589, VERNON, TX 76385-0589
PO BOX 590, VERNON, TX 76385-0590
PO BOX 591, VERNON, TX 76385-0591
PO BOX 592, VERNON, TX 76385-0592
PO BOX 593, VERNON, TX 76385-0593
PO BOX 594, VERNON, TX 76385-0594
PO BOX 595, VERNON, TX 76385-0595
PO BOX 596, VERNON, TX 76385-0596
PO BOX 597, VERNON, TX 76385-0597
PO BOX 598, VERNON, TX 76385-0598
PO BOX 599, VERNON, TX 76385-0599
PO BOX 600, VERNON, TX 76385-0600
PO BOX 601, VERNON, TX 76385-0601
PO BOX 602, VERNON, TX 76385-0602
PO BOX 603, VERNON, TX 76385-0603
PO BOX 604, VERNON, TX 76385-0604
PO BOX 605, VERNON, TX 76385-0605
PO BOX 606, VERNON, TX 76385-0606
PO BOX 607, VERNON, TX 76385-0607
PO BOX 608, VERNON, TX 76385-0608
PO BOX 609, VERNON, TX 76385-0609
PO BOX 610, VERNON, TX 76385-0610
PO BOX 611, VERNON, TX 76385-0611
PO BOX 612, VERNON, TX 76385-0612
PO BOX 613, VERNON, TX 76385-0613
PO BOX 614, VERNON, TX 76385-0614
PO BOX 615, VERNON, TX 76385-0615
PO BOX 616, VERNON, TX 76385-0616
PO BOX 617, VERNON, TX 76385-0617
PO BOX 618, VERNON, TX 76385-0618
PO BOX 619, VERNON, TX 76385-0619
PO BOX 620, VERNON, TX 76385-0620
PO BOX 621, VERNON, TX 76385-0621
PO BOX 622, VERNON, TX 76385-0622
PO BOX 623, VERNON, TX 76385-0623
PO BOX 624, VERNON, TX 76385-0624
PO BOX 625, VERNON, TX 76385-0625
PO BOX 626, VERNON, TX 76385-0626
PO BOX 627, VERNON, TX 76385-0627
PO BOX 628, VERNON, TX 76385-0628
PO BOX 629, VERNON, TX 76385-0629
PO BOX 630, VERNON, TX 76385-0630
PO BOX 631, VERNON, TX 76385-0631
PO BOX 632, VERNON, TX 76385-0632
PO BOX 633, VERNON, TX 76385-0633
PO BOX 634, VERNON, TX 76385-0634
PO BOX 635, VERNON, TX 76385-0635
PO BOX 636, VERNON, TX 76385-0636
PO BOX 637, VERNON, TX 76385-0637
PO BOX 638, VERNON, TX 76385-0638
PO BOX 639, VERNON, TX 76385-0639
PO BOX 640, VERNON, TX 76385-0640
PO BOX 641, VERNON, TX 76385-0641
PO BOX 642, VERNON, TX 76385-0642
PO BOX 643, VERNON, TX 76385-0643
PO BOX 644, VERNON, TX 76385-0644
PO BOX 645, VERNON, TX 76385-0645
PO BOX 646, VERNON, TX 76385-0646
PO BOX 647, VERNON, TX 76385-0647
PO BOX 648, VERNON, TX 76385-0648
PO BOX 649, VERNON, TX 76385-0649
PO BOX 650, VERNON, TX 76385-0650
PO BOX 651, VERNON, TX 76385-0651
PO BOX 652, VERNON, TX 76385-0652
PO BOX 653, VERNON, TX 76385-0653
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