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, CLEARFIELD, PA 16830-0481
PO BOX 482, CLEARFIELD, PA 16830-0482
PO BOX 483, CLEARFIELD, PA 16830-0483
PO BOX 484, CLEARFIELD, PA 16830-0484
PO BOX 485, CLEARFIELD, PA 16830-0485
PO BOX 486, CLEARFIELD, PA 16830-0486
PO BOX 487, CLEARFIELD, PA 16830-0487
PO BOX 488, CLEARFIELD, PA 16830-0488
PO BOX 489, CLEARFIELD, PA 16830-0489
PO BOX 490, CLEARFIELD, PA 16830-0490
PO BOX 491, CLEARFIELD, PA 16830-0491
PO BOX 492, CLEARFIELD, PA 16830-0492
PO BOX 493, CLEARFIELD, PA 16830-0493
PO BOX 494, CLEARFIELD, PA 16830-0494
PO BOX 495, CLEARFIELD, PA 16830-0495
PO BOX 496, CLEARFIELD, PA 16830-0496
PO BOX 497, CLEARFIELD, PA 16830-0497
PO BOX 498, CLEARFIELD, PA 16830-0498
PO BOX 499, CLEARFIELD, PA 16830-0499
PO BOX 500, CLEARFIELD, PA 16830-0500
PO BOX 501, CLEARFIELD, PA 16830-0501
PO BOX 502, CLEARFIELD, PA 16830-0502
PO BOX 503, CLEARFIELD, PA 16830-0503
PO BOX 504, CLEARFIELD, PA 16830-0504
PO BOX 505, CLEARFIELD, PA 16830-0505
PO BOX 506, CLEARFIELD, PA 16830-0506
PO BOX 507, CLEARFIELD, PA 16830-0507
PO BOX 508, CLEARFIELD, PA 16830-0508
PO BOX 509, CLEARFIELD, PA 16830-0509
PO BOX 510, CLEARFIELD, PA 16830-0510
PO BOX 511, CLEARFIELD, PA 16830-0511
PO BOX 512, CLEARFIELD, PA 16830-0512
PO BOX 513, CLEARFIELD, PA 16830-0513
PO BOX 514, CLEARFIELD, PA 16830-0514
PO BOX 515, CLEARFIELD, PA 16830-0515
PO BOX 516, CLEARFIELD, PA 16830-0516
PO BOX 517, CLEARFIELD, PA 16830-0517
PO BOX 518, CLEARFIELD, PA 16830-0518
PO BOX 519, CLEARFIELD, PA 16830-0519
PO BOX 520, CLEARFIELD, PA 16830-0520
PO BOX 521, CLEARFIELD, PA 16830-0521
PO BOX 522, CLEARFIELD, PA 16830-0522
PO BOX 523, CLEARFIELD, PA 16830-0523
PO BOX 524, CLEARFIELD, PA 16830-0524
PO BOX 525, CLEARFIELD, PA 16830-0525
PO BOX 526, CLEARFIELD, PA 16830-0526
PO BOX 527, CLEARFIELD, PA 16830-0527
PO BOX 528, CLEARFIELD, PA 16830-0528
PO BOX 529, CLEARFIELD, PA 16830-0529
PO BOX 530, CLEARFIELD, PA 16830-0530
PO BOX 531, CLEARFIELD, PA 16830-0531
PO BOX 532, CLEARFIELD, PA 16830-0532
PO BOX 533, CLEARFIELD, PA 16830-0533
PO BOX 534, CLEARFIELD, PA 16830-0534
PO BOX 535, CLEARFIELD, PA 16830-0535
PO BOX 536, CLEARFIELD, PA 16830-0536
PO BOX 537, CLEARFIELD, PA 16830-0537
PO BOX 538, CLEARFIELD, PA 16830-0538
PO BOX 539, CLEARFIELD, PA 16830-0539
PO BOX 540, CLEARFIELD, PA 16830-0540
PO BOX 541, CLEARFIELD, PA 16830-0541
PO BOX 542, CLEARFIELD, PA 16830-0542
PO BOX 543, CLEARFIELD, PA 16830-0543
PO BOX 544, CLEARFIELD, PA 16830-0544
PO BOX 545, CLEARFIELD, PA 16830-0545
PO BOX 546, CLEARFIELD, PA 16830-0546
PO BOX 547, CLEARFIELD, PA 16830-0547
PO BOX 548, CLEARFIELD, PA 16830-0548
PO BOX 549, CLEARFIELD, PA 16830-0549
PO BOX 550, CLEARFIELD, PA 16830-0550
PO BOX 551, CLEARFIELD, PA 16830-0551
PO BOX 552, CLEARFIELD, PA 16830-0552
PO BOX 553, CLEARFIELD, PA 16830-0553
PO BOX 554, CLEARFIELD, PA 16830-0554
PO BOX 555, CLEARFIELD, PA 16830-0555
PO BOX 556, CLEARFIELD, PA 16830-0556
PO BOX 557, CLEARFIELD, PA 16830-0557
PO BOX 558, CLEARFIELD, PA 16830-0558
PO BOX 559, CLEARFIELD, PA 16830-0559
PO BOX 560, CLEARFIELD, PA 16830-0560
PO BOX 561, CLEARFIELD, PA 16830-0561
PO BOX 562, CLEARFIELD, PA 16830-0562
PO BOX 563, CLEARFIELD, PA 16830-0563
PO BOX 564, CLEARFIELD, PA 16830-0564
PO BOX 565, CLEARFIELD, PA 16830-0565
PO BOX 566, CLEARFIELD, PA 16830-0566
PO BOX 567, CLEARFIELD, PA 16830-0567
PO BOX 568, CLEARFIELD, PA 16830-0568
PO BOX 569, CLEARFIELD, PA 16830-0569
PO BOX 570, CLEARFIELD, PA 16830-0570
PO BOX 571, CLEARFIELD, PA 16830-0571
PO BOX 572, CLEARFIELD, PA 16830-0572
PO BOX 573, CLEARFIELD, PA 16830-0573
PO BOX 574, CLEARFIELD, PA 16830-0574
PO BOX 575, CLEARFIELD, PA 16830-0575
PO BOX 576, CLEARFIELD, PA 16830-0576
PO BOX 577, CLEARFIELD, PA 16830-0577
PO BOX 578, CLEARFIELD, PA 16830-0578
PO BOX 579, CLEARFIELD, PA 16830-0579
PO BOX 580, CLEARFIELD, PA 16830-0580
PO BOX 581, CLEARFIELD, PA 16830-0581
PO BOX 582, CLEARFIELD, PA 16830-0582
PO BOX 583, CLEARFIELD, PA 16830-0583
PO BOX 584, CLEARFIELD, PA 16830-0584
PO BOX 585, CLEARFIELD, PA 16830-0585
PO BOX 586, CLEARFIELD, PA 16830-0586
PO BOX 587, CLEARFIELD, PA 16830-0587
PO BOX 588, CLEARFIELD, PA 16830-0588
PO BOX 589, CLEARFIELD, PA 16830-0589
PO BOX 590, CLEARFIELD, PA 16830-0590
PO BOX 591, CLEARFIELD, PA 16830-0591
PO BOX 592, CLEARFIELD, PA 16830-0592
PO BOX 593, CLEARFIELD, PA 16830-0593
PO BOX 594, CLEARFIELD, PA 16830-0594
PO BOX 595, CLEARFIELD, PA 16830-0595
PO BOX 596, CLEARFIELD, PA 16830-0596
PO BOX 597, CLEARFIELD, PA 16830-0597
PO BOX 598, CLEARFIELD, PA 16830-0598
PO BOX 599, CLEARFIELD, PA 16830-0599
PO BOX 600, CLEARFIELD, PA 16830-0600
PO BOX 601, CLEARFIELD, PA 16830-0601
PO BOX 602, CLEARFIELD, PA 16830-0602
PO BOX 603, CLEARFIELD, PA 16830-0603
PO BOX 604, CLEARFIELD, PA 16830-0604
PO BOX 605, CLEARFIELD, PA 16830-0605
PO BOX 606, CLEARFIELD, PA 16830-0606
PO BOX 607, CLEARFIELD, PA 16830-0607
PO BOX 608, CLEARFIELD, PA 16830-0608
PO BOX 609, CLEARFIELD, PA 16830-0609
PO BOX 610, CLEARFIELD, PA 16830-0610
PO BOX 611, CLEARFIELD, PA 16830-0611
PO BOX 612, CLEARFIELD, PA 16830-0612
PO BOX 613, CLEARFIELD, PA 16830-0613
PO BOX 614, CLEARFIELD, PA 16830-0614
PO BOX 615, CLEARFIELD, PA 16830-0615
PO BOX 616, CLEARFIELD, PA 16830-0616
PO BOX 617, CLEARFIELD, PA 16830-0617
PO BOX 618, CLEARFIELD, PA 16830-0618
PO BOX 619, CLEARFIELD, PA 16830-0619
PO BOX 620, CLEARFIELD, PA 16830-0620
PO BOX 621, CLEARFIELD, PA 16830-0621
PO BOX 622, CLEARFIELD, PA 16830-0622
PO BOX 623, CLEARFIELD, PA 16830-0623
PO BOX 624, CLEARFIELD, PA 16830-0624
PO BOX 625, CLEARFIELD, PA 16830-0625
PO BOX 626, CLEARFIELD, PA 16830-0626
PO BOX 627, CLEARFIELD, PA 16830-0627
PO BOX 628, CLEARFIELD, PA 16830-0628
PO BOX 629, CLEARFIELD, PA 16830-0629
PO BOX 630, CLEARFIELD, PA 16830-0630
PO BOX 631, CLEARFIELD, PA 16830-0631
PO BOX 632, CLEARFIELD, PA 16830-0632
PO BOX 633, CLEARFIELD, PA 16830-0633
PO BOX 634, CLEARFIELD, PA 16830-0634
PO BOX 635, CLEARFIELD, PA 16830-0635
PO BOX 636, CLEARFIELD, PA 16830-0636
PO BOX 637, CLEARFIELD, PA 16830-0637
PO BOX 638, CLEARFIELD, PA 16830-0638
PO BOX 639, CLEARFIELD, PA 16830-0639
PO BOX 640, CLEARFIELD, PA 16830-0640
PO BOX 641, CLEARFIELD, PA 16830-0641
PO BOX 642, CLEARFIELD, PA 16830-0642
PO BOX 643, CLEARFIELD, PA 16830-0643
PO BOX 644, CLEARFIELD, PA 16830-0644
PO BOX 645, CLEARFIELD, PA 16830-0645
PO BOX 646, CLEARFIELD, PA 16830-0646
PO BOX 647, CLEARFIELD, PA 16830-0647
PO BOX 648, CLEARFIELD, PA 16830-0648
PO BOX 649, CLEARFIELD, PA 16830-0649
PO BOX 650, CLEARFIELD, PA 16830-0650
PO BOX 651, CLEARFIELD, PA 16830-0651
PO BOX 652, CLEARFIELD, PA 16830-0652
PO BOX 653, CLEARFIELD, PA 16830-0653
PO BOX 654, CLEARFIELD, PA 16830-0654
PO BOX 655, CLEARFIELD, PA 16830-0655
PO BOX 656, CLEARFIELD, PA 16830-0656
PO BOX 657, CLEARFIELD, PA 16830-0657
PO BOX 658, CLEARFIELD, PA 16830-0658
PO BOX 659, CLEARFIELD, PA 16830-0659
PO BOX 660, CLEARFIELD, PA 16830-0660
PO BOX 661, CLEARFIELD, PA 16830-0661
PO BOX 662, CLEARFIELD, PA 16830-0662
PO BOX 663, CLEARFIELD, PA 16830-0663
PO BOX 664, CLEARFIELD, PA 16830-0664
PO BOX 665, CLEARFIELD, PA 16830-0665
PO BOX 666, CLEARFIELD, PA 16830-0666
PO BOX 667, CLEARFIELD, PA 16830-0667
PO BOX 668, CLEARFIELD, PA 16830-0668
PO BOX 669, CLEARFIELD, PA 16830-0669
PO BOX 670, CLEARFIELD, PA 16830-0670
PO BOX 671, CLEARFIELD, PA 16830-0671
PO BOX 672, CLEARFIELD, PA 16830-0672
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