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 551, GARDEN CITY, UT 84028-0551
PO BOX 552, GARDEN CITY, UT 84028-0552
PO BOX 553, GARDEN CITY, UT 84028-0553
PO BOX 554, GARDEN CITY, UT 84028-0554
PO BOX 555, GARDEN CITY, UT 84028-0555
PO BOX 556, GARDEN CITY, UT 84028-0556
PO BOX 557, GARDEN CITY, UT 84028-0557
PO BOX 558, GARDEN CITY, UT 84028-0558
PO BOX 559, GARDEN CITY, UT 84028-0559
PO BOX 560, GARDEN CITY, UT 84028-0560
PO BOX 561, GARDEN CITY, UT 84028-0561
PO BOX 562, GARDEN CITY, UT 84028-0562
PO BOX 563, GARDEN CITY, UT 84028-0563
PO BOX 564, GARDEN CITY, UT 84028-0564
PO BOX 565, GARDEN CITY, UT 84028-0565
PO BOX 566, GARDEN CITY, UT 84028-0566
PO BOX 567, GARDEN CITY, UT 84028-0567
PO BOX 568, GARDEN CITY, UT 84028-0568
PO BOX 569, GARDEN CITY, UT 84028-0569
PO BOX 570, GARDEN CITY, UT 84028-0570
PO BOX 571, GARDEN CITY, UT 84028-0571
PO BOX 572, GARDEN CITY, UT 84028-0572
PO BOX 573, GARDEN CITY, UT 84028-0573
PO BOX 574, GARDEN CITY, UT 84028-0574
PO BOX 575, GARDEN CITY, UT 84028-0575
PO BOX 576, GARDEN CITY, UT 84028-0576
PO BOX 577, GARDEN CITY, UT 84028-0577
PO BOX 578, GARDEN CITY, UT 84028-0578
PO BOX 579, GARDEN CITY, UT 84028-0579
PO BOX 580, GARDEN CITY, UT 84028-0580
PO BOX 581, GARDEN CITY, UT 84028-0581
PO BOX 582, GARDEN CITY, UT 84028-0582
PO BOX 583, GARDEN CITY, UT 84028-0583
PO BOX 584, GARDEN CITY, UT 84028-0584
PO BOX 585, GARDEN CITY, UT 84028-0585
PO BOX 586, GARDEN CITY, UT 84028-0586
PO BOX 587, GARDEN CITY, UT 84028-0587
PO BOX 588, GARDEN CITY, UT 84028-0588
PO BOX 589, GARDEN CITY, UT 84028-0589
PO BOX 590, GARDEN CITY, UT 84028-0590
PO BOX 591, GARDEN CITY, UT 84028-0591
PO BOX 592, GARDEN CITY, UT 84028-0592
PO BOX 593, GARDEN CITY, UT 84028-0593
PO BOX 594, GARDEN CITY, UT 84028-0594
PO BOX 595, GARDEN CITY, UT 84028-0595
PO BOX 596, GARDEN CITY, UT 84028-0596
PO BOX 597, GARDEN CITY, UT 84028-0597
PO BOX 598, GARDEN CITY, UT 84028-0598
PO BOX 599, GARDEN CITY, UT 84028-0599
PO BOX 600, GARDEN CITY, UT 84028-0600
PO BOX 601, GARDEN CITY, UT 84028-0601
PO BOX 602, GARDEN CITY, UT 84028-0602
PO BOX 603, GARDEN CITY, UT 84028-0603
PO BOX 604, GARDEN CITY, UT 84028-0604
PO BOX 605, GARDEN CITY, UT 84028-0605
PO BOX 606, GARDEN CITY, UT 84028-0606
PO BOX 607, GARDEN CITY, UT 84028-0607
PO BOX 608, GARDEN CITY, UT 84028-0608
PO BOX 609, GARDEN CITY, UT 84028-0609
PO BOX 610, GARDEN CITY, UT 84028-0610
PO BOX 611, GARDEN CITY, UT 84028-0611
PO BOX 612, GARDEN CITY, UT 84028-0612
PO BOX 613, GARDEN CITY, UT 84028-0613
PO BOX 614, GARDEN CITY, UT 84028-0614
PO BOX 615, GARDEN CITY, UT 84028-0615
PO BOX 616, GARDEN CITY, UT 84028-0616
PO BOX 617, GARDEN CITY, UT 84028-0617
PO BOX 618, GARDEN CITY, UT 84028-0618
PO BOX 619, GARDEN CITY, UT 84028-0619
PO BOX 620, GARDEN CITY, UT 84028-0620
PO BOX 621, GARDEN CITY, UT 84028-0621
PO BOX 622, GARDEN CITY, UT 84028-0622
PO BOX 623, GARDEN CITY, UT 84028-0623
PO BOX 624, GARDEN CITY, UT 84028-0624
PO BOX 625, GARDEN CITY, UT 84028-0625
PO BOX 626, GARDEN CITY, UT 84028-0626
PO BOX 627, GARDEN CITY, UT 84028-0627
PO BOX 628, GARDEN CITY, UT 84028-0628
PO BOX 629, GARDEN CITY, UT 84028-0629
PO BOX 630, GARDEN CITY, UT 84028-0630
PO BOX 631, GARDEN CITY, UT 84028-0631
PO BOX 632, GARDEN CITY, UT 84028-0632
PO BOX 633, GARDEN CITY, UT 84028-0633
PO BOX 634, GARDEN CITY, UT 84028-0634
PO BOX 635, GARDEN CITY, UT 84028-0635
PO BOX 636, GARDEN CITY, UT 84028-0636
PO BOX 637, GARDEN CITY, UT 84028-0637
PO BOX 638, GARDEN CITY, UT 84028-0638
PO BOX 639, GARDEN CITY, UT 84028-0639
PO BOX 640, GARDEN CITY, UT 84028-0640
PO BOX 641, GARDEN CITY, UT 84028-0641
PO BOX 642, GARDEN CITY, UT 84028-0642
PO BOX 643, GARDEN CITY, UT 84028-0643
PO BOX 644, GARDEN CITY, UT 84028-0644
PO BOX 645, GARDEN CITY, UT 84028-0645
PO BOX 646, GARDEN CITY, UT 84028-0646
PO BOX 647, GARDEN CITY, UT 84028-0647
PO BOX 648, GARDEN CITY, UT 84028-0648
PO BOX 649, GARDEN CITY, UT 84028-0649
PO BOX 650, GARDEN CITY, UT 84028-0650
PO BOX 651, GARDEN CITY, UT 84028-0651
PO BOX 652, GARDEN CITY, UT 84028-0652
PO BOX 653, GARDEN CITY, UT 84028-0653
PO BOX 654, GARDEN CITY, UT 84028-0654
PO BOX 655, GARDEN CITY, UT 84028-0655
PO BOX 656, GARDEN CITY, UT 84028-0656
PO BOX 657, GARDEN CITY, UT 84028-0657
PO BOX 658, GARDEN CITY, UT 84028-0658
PO BOX 659, GARDEN CITY, UT 84028-0659
PO BOX 660, GARDEN CITY, UT 84028-0660
PO BOX 661, GARDEN CITY, UT 84028-0661
PO BOX 662, GARDEN CITY, UT 84028-0662
PO BOX 663, GARDEN CITY, UT 84028-0663
PO BOX 664, GARDEN CITY, UT 84028-0664
PO BOX 665, GARDEN CITY, UT 84028-0665
PO BOX 666, GARDEN CITY, UT 84028-0666
PO BOX 667, GARDEN CITY, UT 84028-0667
PO BOX 668, GARDEN CITY, UT 84028-0668
PO BOX 669, GARDEN CITY, UT 84028-0669
PO BOX 670, GARDEN CITY, UT 84028-0670
PO BOX 671, GARDEN CITY, UT 84028-0671
PO BOX 672, GARDEN CITY, UT 84028-0672
PO BOX 673, GARDEN CITY, UT 84028-0673
PO BOX 674, GARDEN CITY, UT 84028-0674
PO BOX 675, GARDEN CITY, UT 84028-0675
PO BOX 676, GARDEN CITY, UT 84028-0676
PO BOX 677, GARDEN CITY, UT 84028-0677
PO BOX 678, GARDEN CITY, UT 84028-0678
PO BOX 679, GARDEN CITY, UT 84028-0679
PO BOX 680, GARDEN CITY, UT 84028-0680
PO BOX 681, GARDEN CITY, UT 84028-0681
PO BOX 682, GARDEN CITY, UT 84028-0682
PO BOX 683, GARDEN CITY, UT 84028-0683
PO BOX 684, GARDEN CITY, UT 84028-0684
PO BOX 685, GARDEN CITY, UT 84028-0685
PO BOX 686, GARDEN CITY, UT 84028-0686
PO BOX 687, GARDEN CITY, UT 84028-0687
PO BOX 688, GARDEN CITY, UT 84028-0688
PO BOX 689, GARDEN CITY, UT 84028-0689
PO BOX 690, GARDEN CITY, UT 84028-0690
PO BOX 691, GARDEN CITY, UT 84028-0691
PO BOX 692, GARDEN CITY, UT 84028-0692
PO BOX 693, GARDEN CITY, UT 84028-0693
PO BOX 694, GARDEN CITY, UT 84028-0694
PO BOX 695, GARDEN CITY, UT 84028-0695
PO BOX 696, GARDEN CITY, UT 84028-0696
PO BOX 697, GARDEN CITY, UT 84028-0697
PO BOX 698, GARDEN CITY, UT 84028-0698
PO BOX 699, GARDEN CITY, UT 84028-0699
PO BOX 700, GARDEN CITY, UT 84028-0700
PO BOX 701, GARDEN CITY, UT 84028-0701
PO BOX 702, GARDEN CITY, UT 84028-0702
PO BOX 703, GARDEN CITY, UT 84028-0703
PO BOX 704, GARDEN CITY, UT 84028-0704
PO BOX 705, GARDEN CITY, UT 84028-0705
PO BOX 706, GARDEN CITY, UT 84028-0706
PO BOX 707, GARDEN CITY, UT 84028-0707
PO BOX 708, GARDEN CITY, UT 84028-0708
PO BOX 709, GARDEN CITY, UT 84028-0709
PO BOX 710, GARDEN CITY, UT 84028-0710
PO BOX 711, GARDEN CITY, UT 84028-0711
PO BOX 712, GARDEN CITY, UT 84028-0712
PO BOX 713, GARDEN CITY, UT 84028-0713
PO BOX 714, GARDEN CITY, UT 84028-0714
PO BOX 715, GARDEN CITY, UT 84028-0715
PO BOX 716, GARDEN CITY, UT 84028-0716
PO BOX 717, GARDEN CITY, UT 84028-0717
PO BOX 718, GARDEN CITY, UT 84028-0718
PO BOX 719, GARDEN CITY, UT 84028-0719
PO BOX 720, GARDEN CITY, UT 84028-0720
PO BOX 721, GARDEN CITY, UT 84028-0721
PO BOX 722, GARDEN CITY, UT 84028-0722
PO BOX 723, GARDEN CITY, UT 84028-0723
PO BOX 724, GARDEN CITY, UT 84028-0724
PO BOX 725, GARDEN CITY, UT 84028-0725
PO BOX 726, GARDEN CITY, UT 84028-0726
PO BOX 727, GARDEN CITY, UT 84028-0727
PO BOX 728, GARDEN CITY, UT 84028-0728
PO BOX 729, GARDEN CITY, UT 84028-0729
PO BOX 730, GARDEN CITY, UT 84028-0730