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 541, FRANKFORT, OH 45628-0541
PO BOX 542, FRANKFORT, OH 45628-0542
PO BOX 543, FRANKFORT, OH 45628-0543
PO BOX 544, FRANKFORT, OH 45628-0544
PO BOX 545, FRANKFORT, OH 45628-0545
PO BOX 546, FRANKFORT, OH 45628-0546
PO BOX 547, FRANKFORT, OH 45628-0547
PO BOX 548, FRANKFORT, OH 45628-0548
PO BOX 549, FRANKFORT, OH 45628-0549
PO BOX 550, FRANKFORT, OH 45628-0550
PO BOX 551, FRANKFORT, OH 45628-0551
PO BOX 552, FRANKFORT, OH 45628-0552
PO BOX 553, FRANKFORT, OH 45628-0553
PO BOX 554, FRANKFORT, OH 45628-0554
PO BOX 555, FRANKFORT, OH 45628-0555
PO BOX 556, FRANKFORT, OH 45628-0556
PO BOX 557, FRANKFORT, OH 45628-0557
PO BOX 558, FRANKFORT, OH 45628-0558
PO BOX 559, FRANKFORT, OH 45628-0559
PO BOX 560, FRANKFORT, OH 45628-0560
PO BOX 561, FRANKFORT, OH 45628-0561
PO BOX 562, FRANKFORT, OH 45628-0562
PO BOX 563, FRANKFORT, OH 45628-0563
PO BOX 564, FRANKFORT, OH 45628-0564
PO BOX 565, FRANKFORT, OH 45628-0565
PO BOX 566, FRANKFORT, OH 45628-0566
PO BOX 567, FRANKFORT, OH 45628-0567
PO BOX 568, FRANKFORT, OH 45628-0568
PO BOX 569, FRANKFORT, OH 45628-0569
PO BOX 570, FRANKFORT, OH 45628-0570
PO BOX 571, FRANKFORT, OH 45628-0571
PO BOX 572, FRANKFORT, OH 45628-0572
PO BOX 573, FRANKFORT, OH 45628-0573
PO BOX 574, FRANKFORT, OH 45628-0574
PO BOX 575, FRANKFORT, OH 45628-0575
PO BOX 576, FRANKFORT, OH 45628-0576
PO BOX 577, FRANKFORT, OH 45628-0577
PO BOX 578, FRANKFORT, OH 45628-0578
PO BOX 579, FRANKFORT, OH 45628-0579
PO BOX 580, FRANKFORT, OH 45628-0580
PO BOX 581, FRANKFORT, OH 45628-0581
PO BOX 582, FRANKFORT, OH 45628-0582
PO BOX 583, FRANKFORT, OH 45628-0583
PO BOX 584, FRANKFORT, OH 45628-0584
PO BOX 585, FRANKFORT, OH 45628-0585
PO BOX 586, FRANKFORT, OH 45628-0586
PO BOX 587, FRANKFORT, OH 45628-0587
PO BOX 588, FRANKFORT, OH 45628-0588
PO BOX 589, FRANKFORT, OH 45628-0589
PO BOX 590, FRANKFORT, OH 45628-0590
PO BOX 591, FRANKFORT, OH 45628-0591
PO BOX 592, FRANKFORT, OH 45628-0592
PO BOX 593, FRANKFORT, OH 45628-0593
PO BOX 594, FRANKFORT, OH 45628-0594
PO BOX 595, FRANKFORT, OH 45628-0595
PO BOX 596, FRANKFORT, OH 45628-0596
PO BOX 597, FRANKFORT, OH 45628-0597
PO BOX 598, FRANKFORT, OH 45628-0598
PO BOX 599, FRANKFORT, OH 45628-0599
PO BOX 600, FRANKFORT, OH 45628-0600
PO BOX 601, FRANKFORT, OH 45628-0601
PO BOX 602, FRANKFORT, OH 45628-0602
PO BOX 603, FRANKFORT, OH 45628-0603
PO BOX 604, FRANKFORT, OH 45628-0604
PO BOX 605, FRANKFORT, OH 45628-0605
PO BOX 606, FRANKFORT, OH 45628-0606
PO BOX 607, FRANKFORT, OH 45628-0607
PO BOX 608, FRANKFORT, OH 45628-0608
PO BOX 609, FRANKFORT, OH 45628-0609
PO BOX 610, FRANKFORT, OH 45628-0610
PO BOX 611, FRANKFORT, OH 45628-0611
PO BOX 612, FRANKFORT, OH 45628-0612
PO BOX 613, FRANKFORT, OH 45628-0613
PO BOX 614, FRANKFORT, OH 45628-0614
PO BOX 615, FRANKFORT, OH 45628-0615
PO BOX 616, FRANKFORT, OH 45628-0616
PO BOX 617, FRANKFORT, OH 45628-0617
PO BOX 618, FRANKFORT, OH 45628-0618
PO BOX 619, FRANKFORT, OH 45628-0619
PO BOX 620, FRANKFORT, OH 45628-0620
PO BOX 621, FRANKFORT, OH 45628-0621
PO BOX 622, FRANKFORT, OH 45628-0622
PO BOX 623, FRANKFORT, OH 45628-0623
PO BOX 624, FRANKFORT, OH 45628-0624
PO BOX 625, FRANKFORT, OH 45628-0625
PO BOX 626, FRANKFORT, OH 45628-0626
PO BOX 627, FRANKFORT, OH 45628-0627
PO BOX 628, FRANKFORT, OH 45628-0628
PO BOX 629, FRANKFORT, OH 45628-0629
PO BOX 630, FRANKFORT, OH 45628-0630
PO BOX 631, FRANKFORT, OH 45628-0631
PO BOX 632, FRANKFORT, OH 45628-0632
PO BOX 633, FRANKFORT, OH 45628-0633
PO BOX 634, FRANKFORT, OH 45628-0634
PO BOX 635, FRANKFORT, OH 45628-0635
PO BOX 636, FRANKFORT, OH 45628-0636
PO BOX 637, FRANKFORT, OH 45628-0637
PO BOX 638, FRANKFORT, OH 45628-0638
PO BOX 639, FRANKFORT, OH 45628-0639
PO BOX 640, FRANKFORT, OH 45628-0640
PO BOX 641, FRANKFORT, OH 45628-0641
PO BOX 642, FRANKFORT, OH 45628-0642
PO BOX 643, FRANKFORT, OH 45628-0643
PO BOX 644, FRANKFORT, OH 45628-0644
PO BOX 645, FRANKFORT, OH 45628-0645
PO BOX 646, FRANKFORT, OH 45628-0646
PO BOX 647, FRANKFORT, OH 45628-0647
PO BOX 648, FRANKFORT, OH 45628-0648
PO BOX 649, FRANKFORT, OH 45628-0649
PO BOX 650, FRANKFORT, OH 45628-0650
PO BOX 651, FRANKFORT, OH 45628-0651
PO BOX 652, FRANKFORT, OH 45628-0652
PO BOX 653, FRANKFORT, OH 45628-0653
PO BOX 654, FRANKFORT, OH 45628-0654
PO BOX 655, FRANKFORT, OH 45628-0655
PO BOX 656, FRANKFORT, OH 45628-0656
PO BOX 657, FRANKFORT, OH 45628-0657
PO BOX 658, FRANKFORT, OH 45628-0658
PO BOX 659, FRANKFORT, OH 45628-0659
PO BOX 660, FRANKFORT, OH 45628-0660
PO BOX 661, FRANKFORT, OH 45628-0661
PO BOX 662, FRANKFORT, OH 45628-0662
PO BOX 663, FRANKFORT, OH 45628-0663
PO BOX 664, FRANKFORT, OH 45628-0664
PO BOX 665, FRANKFORT, OH 45628-0665
PO BOX 666, FRANKFORT, OH 45628-0666
PO BOX 667, FRANKFORT, OH 45628-0667
PO BOX 668, FRANKFORT, OH 45628-0668
PO BOX 669, FRANKFORT, OH 45628-0669
PO BOX 670, FRANKFORT, OH 45628-0670
PO BOX 671, FRANKFORT, OH 45628-0671
PO BOX 672, FRANKFORT, OH 45628-0672
PO BOX 673, FRANKFORT, OH 45628-0673
PO BOX 674, FRANKFORT, OH 45628-0674
PO BOX 675, FRANKFORT, OH 45628-0675
PO BOX 676, FRANKFORT, OH 45628-0676
PO BOX 677, FRANKFORT, OH 45628-0677
PO BOX 678, FRANKFORT, OH 45628-0678
PO BOX 679, FRANKFORT, OH 45628-0679
PO BOX 680, FRANKFORT, OH 45628-0680
PO BOX 681, FRANKFORT, OH 45628-0681
PO BOX 682, FRANKFORT, OH 45628-0682
PO BOX 683, FRANKFORT, OH 45628-0683
PO BOX 684, FRANKFORT, OH 45628-0684
PO BOX 685, FRANKFORT, OH 45628-0685
PO BOX 686, FRANKFORT, OH 45628-0686
PO BOX 687, FRANKFORT, OH 45628-0687
PO BOX 688, FRANKFORT, OH 45628-0688
PO BOX 689, FRANKFORT, OH 45628-0689
PO BOX 690, FRANKFORT, OH 45628-0690
PO BOX 691, FRANKFORT, OH 45628-0691
PO BOX 692, FRANKFORT, OH 45628-0692
PO BOX 693, FRANKFORT, OH 45628-0693
PO BOX 694, FRANKFORT, OH 45628-0694
PO BOX 695, FRANKFORT, OH 45628-0695
PO BOX 696, FRANKFORT, OH 45628-0696
PO BOX 697, FRANKFORT, OH 45628-0697
PO BOX 698, FRANKFORT, OH 45628-0698
PO BOX 699, FRANKFORT, OH 45628-0699
PO BOX 700, FRANKFORT, OH 45628-0700
PO BOX 701, FRANKFORT, OH 45628-0701
PO BOX 702, FRANKFORT, OH 45628-0702
PO BOX 703, FRANKFORT, OH 45628-0703
PO BOX 704, FRANKFORT, OH 45628-0704
PO BOX 705, FRANKFORT, OH 45628-0705
PO BOX 706, FRANKFORT, OH 45628-0706
PO BOX 707, FRANKFORT, OH 45628-0707
PO BOX 708, FRANKFORT, OH 45628-0708
PO BOX 709, FRANKFORT, OH 45628-0709
PO BOX 710, FRANKFORT, OH 45628-0710
PO BOX 711, FRANKFORT, OH 45628-0711
PO BOX 712, FRANKFORT, OH 45628-0712
PO BOX 713, FRANKFORT, OH 45628-0713
PO BOX 714, FRANKFORT, OH 45628-0714
PO BOX 715, FRANKFORT, OH 45628-0715
PO BOX 716, FRANKFORT, OH 45628-0716
PO BOX 717, FRANKFORT, OH 45628-0717
PO BOX 718, FRANKFORT, OH 45628-0718
PO BOX 719, FRANKFORT, OH 45628-0719
PO BOX 720, FRANKFORT, OH 45628-0720
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