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, LIBERAL, KS 67905-0481
PO BOX 482, LIBERAL, KS 67905-0482
PO BOX 483, LIBERAL, KS 67905-0483
PO BOX 484, LIBERAL, KS 67905-0484
PO BOX 485, LIBERAL, KS 67905-0485
PO BOX 486, LIBERAL, KS 67905-0486
PO BOX 487, LIBERAL, KS 67905-0487
PO BOX 488, LIBERAL, KS 67905-0488
PO BOX 489, LIBERAL, KS 67905-0489
PO BOX 490, LIBERAL, KS 67905-0490
PO BOX 491, LIBERAL, KS 67905-0491
PO BOX 492, LIBERAL, KS 67905-0492
PO BOX 493, LIBERAL, KS 67905-0493
PO BOX 494, LIBERAL, KS 67905-0494
PO BOX 495, LIBERAL, KS 67905-0495
PO BOX 496, LIBERAL, KS 67905-0496
PO BOX 497, LIBERAL, KS 67905-0497
PO BOX 498, LIBERAL, KS 67905-0498
PO BOX 499, LIBERAL, KS 67905-0499
PO BOX 500, LIBERAL, KS 67905-0500
PO BOX 501, LIBERAL, KS 67905-0501
PO BOX 502, LIBERAL, KS 67905-0502
PO BOX 503, LIBERAL, KS 67905-0503
PO BOX 504, LIBERAL, KS 67905-0504
PO BOX 505, LIBERAL, KS 67905-0505
PO BOX 506, LIBERAL, KS 67905-0506
PO BOX 507, LIBERAL, KS 67905-0507
PO BOX 508, LIBERAL, KS 67905-0508
PO BOX 509, LIBERAL, KS 67905-0509
PO BOX 510, LIBERAL, KS 67905-0510
PO BOX 511, LIBERAL, KS 67905-0511
PO BOX 512, LIBERAL, KS 67905-0512
PO BOX 513, LIBERAL, KS 67905-0513
PO BOX 514, LIBERAL, KS 67905-0514
PO BOX 515, LIBERAL, KS 67905-0515
PO BOX 516, LIBERAL, KS 67905-0516
PO BOX 517, LIBERAL, KS 67905-0517
PO BOX 518, LIBERAL, KS 67905-0518
PO BOX 519, LIBERAL, KS 67905-0519
PO BOX 520, LIBERAL, KS 67905-0520
PO BOX 521, LIBERAL, KS 67905-0521
PO BOX 522, LIBERAL, KS 67905-0522
PO BOX 523, LIBERAL, KS 67905-0523
PO BOX 524, LIBERAL, KS 67905-0524
PO BOX 525, LIBERAL, KS 67905-0525
PO BOX 526, LIBERAL, KS 67905-0526
PO BOX 527, LIBERAL, KS 67905-0527
PO BOX 528, LIBERAL, KS 67905-0528
PO BOX 529, LIBERAL, KS 67905-0529
PO BOX 530, LIBERAL, KS 67905-0530
PO BOX 531, LIBERAL, KS 67905-0531
PO BOX 532, LIBERAL, KS 67905-0532
PO BOX 533, LIBERAL, KS 67905-0533
PO BOX 534, LIBERAL, KS 67905-0534
PO BOX 535, LIBERAL, KS 67905-0535
PO BOX 536, LIBERAL, KS 67905-0536
PO BOX 537, LIBERAL, KS 67905-0537
PO BOX 538, LIBERAL, KS 67905-0538
PO BOX 539, LIBERAL, KS 67905-0539
PO BOX 540, LIBERAL, KS 67905-0540
PO BOX 541, LIBERAL, KS 67905-0541
PO BOX 542, LIBERAL, KS 67905-0542
PO BOX 543, LIBERAL, KS 67905-0543
PO BOX 544, LIBERAL, KS 67905-0544
PO BOX 545, LIBERAL, KS 67905-0545
PO BOX 546, LIBERAL, KS 67905-0546
PO BOX 547, LIBERAL, KS 67905-0547
PO BOX 548, LIBERAL, KS 67905-0548
PO BOX 549, LIBERAL, KS 67905-0549
PO BOX 550, LIBERAL, KS 67905-0550
PO BOX 551, LIBERAL, KS 67905-0551
PO BOX 552, LIBERAL, KS 67905-0552
PO BOX 553, LIBERAL, KS 67905-0553
PO BOX 554, LIBERAL, KS 67905-0554
PO BOX 555, LIBERAL, KS 67905-0555
PO BOX 556, LIBERAL, KS 67905-0556
PO BOX 557, LIBERAL, KS 67905-0557
PO BOX 558, LIBERAL, KS 67905-0558
PO BOX 559, LIBERAL, KS 67905-0559
PO BOX 560, LIBERAL, KS 67905-0560
PO BOX 561, LIBERAL, KS 67905-0561
PO BOX 562, LIBERAL, KS 67905-0562
PO BOX 563, LIBERAL, KS 67905-0563
PO BOX 564, LIBERAL, KS 67905-0564
PO BOX 565, LIBERAL, KS 67905-0565
PO BOX 566, LIBERAL, KS 67905-0566
PO BOX 567, LIBERAL, KS 67905-0567
PO BOX 568, LIBERAL, KS 67905-0568
PO BOX 569, LIBERAL, KS 67905-0569
PO BOX 570, LIBERAL, KS 67905-0570
PO BOX 571, LIBERAL, KS 67905-0571
PO BOX 572, LIBERAL, KS 67905-0572
PO BOX 573, LIBERAL, KS 67905-0573
PO BOX 574, LIBERAL, KS 67905-0574
PO BOX 575, LIBERAL, KS 67905-0575
PO BOX 576, LIBERAL, KS 67905-0576
PO BOX 577, LIBERAL, KS 67905-0577
PO BOX 578, LIBERAL, KS 67905-0578
PO BOX 579, LIBERAL, KS 67905-0579
PO BOX 580, LIBERAL, KS 67905-0580
PO BOX 581, LIBERAL, KS 67905-0581
PO BOX 582, LIBERAL, KS 67905-0582
PO BOX 583, LIBERAL, KS 67905-0583
PO BOX 584, LIBERAL, KS 67905-0584
PO BOX 585, LIBERAL, KS 67905-0585
PO BOX 586, LIBERAL, KS 67905-0586
PO BOX 587, LIBERAL, KS 67905-0587
PO BOX 588, LIBERAL, KS 67905-0588
PO BOX 589, LIBERAL, KS 67905-0589
PO BOX 590, LIBERAL, KS 67905-0590
PO BOX 591, LIBERAL, KS 67905-0591
PO BOX 592, LIBERAL, KS 67905-0592
PO BOX 593, LIBERAL, KS 67905-0593
PO BOX 594, LIBERAL, KS 67905-0594
PO BOX 595, LIBERAL, KS 67905-0595
PO BOX 596, LIBERAL, KS 67905-0596
PO BOX 597, LIBERAL, KS 67905-0597
PO BOX 598, LIBERAL, KS 67905-0598
PO BOX 599, LIBERAL, KS 67905-0599
PO BOX 600, LIBERAL, KS 67905-0600
PO BOX 601, LIBERAL, KS 67905-0601
PO BOX 602, LIBERAL, KS 67905-0602
PO BOX 603, LIBERAL, KS 67905-0603
PO BOX 604, LIBERAL, KS 67905-0604
PO BOX 605, LIBERAL, KS 67905-0605
PO BOX 606, LIBERAL, KS 67905-0606
PO BOX 607, LIBERAL, KS 67905-0607
PO BOX 608, LIBERAL, KS 67905-0608
PO BOX 609, LIBERAL, KS 67905-0609
PO BOX 610, LIBERAL, KS 67905-0610
PO BOX 611, LIBERAL, KS 67905-0611
PO BOX 612, LIBERAL, KS 67905-0612
PO BOX 613, LIBERAL, KS 67905-0613
PO BOX 614, LIBERAL, KS 67905-0614
PO BOX 615, LIBERAL, KS 67905-0615
PO BOX 616, LIBERAL, KS 67905-0616
PO BOX 617, LIBERAL, KS 67905-0617
PO BOX 618, LIBERAL, KS 67905-0618
PO BOX 619, LIBERAL, KS 67905-0619
PO BOX 620, LIBERAL, KS 67905-0620
PO BOX 621, LIBERAL, KS 67905-0621
PO BOX 622, LIBERAL, KS 67905-0622
PO BOX 623, LIBERAL, KS 67905-0623
PO BOX 624, LIBERAL, KS 67905-0624
PO BOX 625, LIBERAL, KS 67905-0625
PO BOX 626, LIBERAL, KS 67905-0626
PO BOX 627, LIBERAL, KS 67905-0627
PO BOX 628, LIBERAL, KS 67905-0628
PO BOX 629, LIBERAL, KS 67905-0629
PO BOX 630, LIBERAL, KS 67905-0630
PO BOX 631, LIBERAL, KS 67905-0631
PO BOX 632, LIBERAL, KS 67905-0632
PO BOX 633, LIBERAL, KS 67905-0633
PO BOX 634, LIBERAL, KS 67905-0634
PO BOX 635, LIBERAL, KS 67905-0635
PO BOX 636, LIBERAL, KS 67905-0636
PO BOX 637, LIBERAL, KS 67905-0637
PO BOX 638, LIBERAL, KS 67905-0638
PO BOX 639, LIBERAL, KS 67905-0639
PO BOX 640, LIBERAL, KS 67905-0640
PO BOX 641, LIBERAL, KS 67905-0641
PO BOX 642, LIBERAL, KS 67905-0642
PO BOX 643, LIBERAL, KS 67905-0643
PO BOX 644, LIBERAL, KS 67905-0644
PO BOX 645, LIBERAL, KS 67905-0645
PO BOX 646, LIBERAL, KS 67905-0646
PO BOX 647, LIBERAL, KS 67905-0647
PO BOX 648, LIBERAL, KS 67905-0648
PO BOX 649, LIBERAL, KS 67905-0649
PO BOX 650, LIBERAL, KS 67905-0650
PO BOX 651, LIBERAL, KS 67905-0651
PO BOX 652, LIBERAL, KS 67905-0652
PO BOX 653, LIBERAL, KS 67905-0653
PO BOX 654, LIBERAL, KS 67905-0654
PO BOX 655, LIBERAL, KS 67905-0655
PO BOX 656, LIBERAL, KS 67905-0656
PO BOX 657, LIBERAL, KS 67905-0657
PO BOX 658, LIBERAL, KS 67905-0658
PO BOX 659, LIBERAL, KS 67905-0659
PO BOX 660, LIBERAL, KS 67905-0660
PO BOX 661, LIBERAL, KS 67905-0661
PO BOX 662, LIBERAL, KS 67905-0662
PO BOX 663, LIBERAL, KS 67905-0663
PO BOX 664, LIBERAL, KS 67905-0664
PO BOX 665, LIBERAL, KS 67905-0665
PO BOX 666, LIBERAL, KS 67905-0666
PO BOX 667, LIBERAL, KS 67905-0667
PO BOX 668, LIBERAL, KS 67905-0668
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