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, WEBSTER SPRINGS, WV 26288-0481
PO BOX 482, WEBSTER SPRINGS, WV 26288-0482
PO BOX 483, WEBSTER SPRINGS, WV 26288-0483
PO BOX 484, WEBSTER SPRINGS, WV 26288-0484
PO BOX 485, WEBSTER SPRINGS, WV 26288-0485
PO BOX 486, WEBSTER SPRINGS, WV 26288-0486
PO BOX 487, WEBSTER SPRINGS, WV 26288-0487
PO BOX 488, WEBSTER SPRINGS, WV 26288-0488
PO BOX 489, WEBSTER SPRINGS, WV 26288-0489
PO BOX 490, WEBSTER SPRINGS, WV 26288-0490
PO BOX 491, WEBSTER SPRINGS, WV 26288-0491
PO BOX 492, WEBSTER SPRINGS, WV 26288-0492
PO BOX 493, WEBSTER SPRINGS, WV 26288-0493
PO BOX 494, WEBSTER SPRINGS, WV 26288-0494
PO BOX 495, WEBSTER SPRINGS, WV 26288-0495
PO BOX 496, WEBSTER SPRINGS, WV 26288-0496
PO BOX 497, WEBSTER SPRINGS, WV 26288-0497
PO BOX 498, WEBSTER SPRINGS, WV 26288-0498
PO BOX 499, WEBSTER SPRINGS, WV 26288-0499
PO BOX 500, WEBSTER SPRINGS, WV 26288-0500
PO BOX 501, WEBSTER SPRINGS, WV 26288-0501
PO BOX 502, WEBSTER SPRINGS, WV 26288-0502
PO BOX 503, WEBSTER SPRINGS, WV 26288-0503
PO BOX 504, WEBSTER SPRINGS, WV 26288-0504
PO BOX 505, WEBSTER SPRINGS, WV 26288-0505
PO BOX 506, WEBSTER SPRINGS, WV 26288-0506
PO BOX 507, WEBSTER SPRINGS, WV 26288-0507
PO BOX 508, WEBSTER SPRINGS, WV 26288-0508
PO BOX 509, WEBSTER SPRINGS, WV 26288-0509
PO BOX 510, WEBSTER SPRINGS, WV 26288-0510
PO BOX 511, WEBSTER SPRINGS, WV 26288-0511
PO BOX 512, WEBSTER SPRINGS, WV 26288-0512
PO BOX 513, WEBSTER SPRINGS, WV 26288-0513
PO BOX 514, WEBSTER SPRINGS, WV 26288-0514
PO BOX 515, WEBSTER SPRINGS, WV 26288-0515
PO BOX 516, WEBSTER SPRINGS, WV 26288-0516
PO BOX 517, WEBSTER SPRINGS, WV 26288-0517
PO BOX 518, WEBSTER SPRINGS, WV 26288-0518
PO BOX 519, WEBSTER SPRINGS, WV 26288-0519
PO BOX 520, WEBSTER SPRINGS, WV 26288-0520
PO BOX 521, WEBSTER SPRINGS, WV 26288-0521
PO BOX 522, WEBSTER SPRINGS, WV 26288-0522
PO BOX 523, WEBSTER SPRINGS, WV 26288-0523
PO BOX 524, WEBSTER SPRINGS, WV 26288-0524
PO BOX 525, WEBSTER SPRINGS, WV 26288-0525
PO BOX 526, WEBSTER SPRINGS, WV 26288-0526
PO BOX 527, WEBSTER SPRINGS, WV 26288-0527
PO BOX 528, WEBSTER SPRINGS, WV 26288-0528
PO BOX 529, WEBSTER SPRINGS, WV 26288-0529
PO BOX 530, WEBSTER SPRINGS, WV 26288-0530
PO BOX 531, WEBSTER SPRINGS, WV 26288-0531
PO BOX 532, WEBSTER SPRINGS, WV 26288-0532
PO BOX 533, WEBSTER SPRINGS, WV 26288-0533
PO BOX 534, WEBSTER SPRINGS, WV 26288-0534
PO BOX 535, WEBSTER SPRINGS, WV 26288-0535
PO BOX 536, WEBSTER SPRINGS, WV 26288-0536
PO BOX 537, WEBSTER SPRINGS, WV 26288-0537
PO BOX 538, WEBSTER SPRINGS, WV 26288-0538
PO BOX 539, WEBSTER SPRINGS, WV 26288-0539
PO BOX 540, WEBSTER SPRINGS, WV 26288-0540
PO BOX 541, WEBSTER SPRINGS, WV 26288-0541
PO BOX 542, WEBSTER SPRINGS, WV 26288-0542
PO BOX 543, WEBSTER SPRINGS, WV 26288-0543
PO BOX 544, WEBSTER SPRINGS, WV 26288-0544
PO BOX 545, WEBSTER SPRINGS, WV 26288-0545
PO BOX 546, WEBSTER SPRINGS, WV 26288-0546
PO BOX 547, WEBSTER SPRINGS, WV 26288-0547
PO BOX 548, WEBSTER SPRINGS, WV 26288-0548
PO BOX 549, WEBSTER SPRINGS, WV 26288-0549
PO BOX 550, WEBSTER SPRINGS, WV 26288-0550
PO BOX 551, WEBSTER SPRINGS, WV 26288-0551
PO BOX 552, WEBSTER SPRINGS, WV 26288-0552
PO BOX 553, WEBSTER SPRINGS, WV 26288-0553
PO BOX 554, WEBSTER SPRINGS, WV 26288-0554
PO BOX 555, WEBSTER SPRINGS, WV 26288-0555
PO BOX 556, WEBSTER SPRINGS, WV 26288-0556
PO BOX 557, WEBSTER SPRINGS, WV 26288-0557
PO BOX 558, WEBSTER SPRINGS, WV 26288-0558
PO BOX 559, WEBSTER SPRINGS, WV 26288-0559
PO BOX 560, WEBSTER SPRINGS, WV 26288-0560
PO BOX 561, WEBSTER SPRINGS, WV 26288-0561
PO BOX 562, WEBSTER SPRINGS, WV 26288-0562
PO BOX 563, WEBSTER SPRINGS, WV 26288-0563
PO BOX 564, WEBSTER SPRINGS, WV 26288-0564
PO BOX 565, WEBSTER SPRINGS, WV 26288-0565
PO BOX 566, WEBSTER SPRINGS, WV 26288-0566
PO BOX 567, WEBSTER SPRINGS, WV 26288-0567
PO BOX 568, WEBSTER SPRINGS, WV 26288-0568
PO BOX 569, WEBSTER SPRINGS, WV 26288-0569
PO BOX 570, WEBSTER SPRINGS, WV 26288-0570
PO BOX 571, WEBSTER SPRINGS, WV 26288-0571
PO BOX 572, WEBSTER SPRINGS, WV 26288-0572
PO BOX 573, WEBSTER SPRINGS, WV 26288-0573
PO BOX 574, WEBSTER SPRINGS, WV 26288-0574
PO BOX 575, WEBSTER SPRINGS, WV 26288-0575
PO BOX 576, WEBSTER SPRINGS, WV 26288-0576
PO BOX 577, WEBSTER SPRINGS, WV 26288-0577
PO BOX 578, WEBSTER SPRINGS, WV 26288-0578
PO BOX 579, WEBSTER SPRINGS, WV 26288-0579
PO BOX 580, WEBSTER SPRINGS, WV 26288-0580
PO BOX 581, WEBSTER SPRINGS, WV 26288-0581
PO BOX 582, WEBSTER SPRINGS, WV 26288-0582
PO BOX 583, WEBSTER SPRINGS, WV 26288-0583
PO BOX 584, WEBSTER SPRINGS, WV 26288-0584
PO BOX 585, WEBSTER SPRINGS, WV 26288-0585
PO BOX 586, WEBSTER SPRINGS, WV 26288-0586
PO BOX 587, WEBSTER SPRINGS, WV 26288-0587
PO BOX 588, WEBSTER SPRINGS, WV 26288-0588
PO BOX 589, WEBSTER SPRINGS, WV 26288-0589
PO BOX 590, WEBSTER SPRINGS, WV 26288-0590
PO BOX 591, WEBSTER SPRINGS, WV 26288-0591
PO BOX 592, WEBSTER SPRINGS, WV 26288-0592
PO BOX 593, WEBSTER SPRINGS, WV 26288-0593
PO BOX 594, WEBSTER SPRINGS, WV 26288-0594
PO BOX 595, WEBSTER SPRINGS, WV 26288-0595
PO BOX 596, WEBSTER SPRINGS, WV 26288-0596
PO BOX 597, WEBSTER SPRINGS, WV 26288-0597
PO BOX 598, WEBSTER SPRINGS, WV 26288-0598
PO BOX 599, WEBSTER SPRINGS, WV 26288-0599
PO BOX 600, WEBSTER SPRINGS, WV 26288-0600
PO BOX 601, WEBSTER SPRINGS, WV 26288-0601
PO BOX 602, WEBSTER SPRINGS, WV 26288-0602
PO BOX 603, WEBSTER SPRINGS, WV 26288-0603
PO BOX 604, WEBSTER SPRINGS, WV 26288-0604
PO BOX 605, WEBSTER SPRINGS, WV 26288-0605
PO BOX 606, WEBSTER SPRINGS, WV 26288-0606
PO BOX 607, WEBSTER SPRINGS, WV 26288-0607
PO BOX 608, WEBSTER SPRINGS, WV 26288-0608
PO BOX 609, WEBSTER SPRINGS, WV 26288-0609
PO BOX 610, WEBSTER SPRINGS, WV 26288-0610
PO BOX 611, WEBSTER SPRINGS, WV 26288-0611
PO BOX 612, WEBSTER SPRINGS, WV 26288-0612
PO BOX 613, WEBSTER SPRINGS, WV 26288-0613
PO BOX 614, WEBSTER SPRINGS, WV 26288-0614
PO BOX 615, WEBSTER SPRINGS, WV 26288-0615
PO BOX 616, WEBSTER SPRINGS, WV 26288-0616
PO BOX 617, WEBSTER SPRINGS, WV 26288-0617
PO BOX 618, WEBSTER SPRINGS, WV 26288-0618
PO BOX 619, WEBSTER SPRINGS, WV 26288-0619
PO BOX 620, WEBSTER SPRINGS, WV 26288-0620
PO BOX 621, WEBSTER SPRINGS, WV 26288-0621
PO BOX 622, WEBSTER SPRINGS, WV 26288-0622
PO BOX 623, WEBSTER SPRINGS, WV 26288-0623
PO BOX 624, WEBSTER SPRINGS, WV 26288-0624
PO BOX 625, WEBSTER SPRINGS, WV 26288-0625
PO BOX 626, WEBSTER SPRINGS, WV 26288-0626
PO BOX 627, WEBSTER SPRINGS, WV 26288-0627
PO BOX 628, WEBSTER SPRINGS, WV 26288-0628
PO BOX 629, WEBSTER SPRINGS, WV 26288-0629
PO BOX 630, WEBSTER SPRINGS, WV 26288-0630
PO BOX 631, WEBSTER SPRINGS, WV 26288-0631
PO BOX 632, WEBSTER SPRINGS, WV 26288-0632