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 611, DURANGO, CO 81302-0611
PO BOX 612, DURANGO, CO 81302-0612
PO BOX 613, DURANGO, CO 81302-0613
PO BOX 614, DURANGO, CO 81302-0614
PO BOX 615, DURANGO, CO 81302-0615
PO BOX 616, DURANGO, CO 81302-0616
PO BOX 617, DURANGO, CO 81302-0617
PO BOX 618, DURANGO, CO 81302-0618
PO BOX 619, DURANGO, CO 81302-0619
PO BOX 620, DURANGO, CO 81302-0620
PO BOX 621, DURANGO, CO 81302-0621
PO BOX 622, DURANGO, CO 81302-0622
PO BOX 623, DURANGO, CO 81302-0623
PO BOX 624, DURANGO, CO 81302-0624
PO BOX 625, DURANGO, CO 81302-0625
PO BOX 626, DURANGO, CO 81302-0626
PO BOX 627, DURANGO, CO 81302-0627
PO BOX 628, DURANGO, CO 81302-0628
PO BOX 629, DURANGO, CO 81302-0629
PO BOX 630, DURANGO, CO 81302-0630
PO BOX 631, DURANGO, CO 81302-0631
PO BOX 632, DURANGO, CO 81302-0632
PO BOX 633, DURANGO, CO 81302-0633
PO BOX 634, DURANGO, CO 81302-0634
PO BOX 635, DURANGO, CO 81302-0635
PO BOX 636, DURANGO, CO 81302-0636
PO BOX 637, DURANGO, CO 81302-0637
PO BOX 638, DURANGO, CO 81302-0638
PO BOX 639, DURANGO, CO 81302-0639
PO BOX 640, DURANGO, CO 81302-0640
PO BOX 641, DURANGO, CO 81302-0641
PO BOX 642, DURANGO, CO 81302-0642
PO BOX 643, DURANGO, CO 81302-0643
PO BOX 644, DURANGO, CO 81302-0644
PO BOX 645, DURANGO, CO 81302-0645
PO BOX 646, DURANGO, CO 81302-0646
PO BOX 647, DURANGO, CO 81302-0647
PO BOX 648, DURANGO, CO 81302-0648
PO BOX 649, DURANGO, CO 81302-0649
PO BOX 650, DURANGO, CO 81302-0650
PO BOX 651, DURANGO, CO 81302-0651
PO BOX 652, DURANGO, CO 81302-0652
PO BOX 653, DURANGO, CO 81302-0653
PO BOX 654, DURANGO, CO 81302-0654
PO BOX 655, DURANGO, CO 81302-0655
PO BOX 656, DURANGO, CO 81302-0656
PO BOX 657, DURANGO, CO 81302-0657
PO BOX 658, DURANGO, CO 81302-0658
PO BOX 659, DURANGO, CO 81302-0659
PO BOX 660, DURANGO, CO 81302-0660
PO BOX 661, DURANGO, CO 81302-0661
PO BOX 662, DURANGO, CO 81302-0662
PO BOX 663, DURANGO, CO 81302-0663
PO BOX 664, DURANGO, CO 81302-0664
PO BOX 665, DURANGO, CO 81302-0665
PO BOX 666, DURANGO, CO 81302-0666
PO BOX 667, DURANGO, CO 81302-0667
PO BOX 668, DURANGO, CO 81302-0668
PO BOX 669, DURANGO, CO 81302-0669
PO BOX 670, DURANGO, CO 81302-0670
PO BOX 671, DURANGO, CO 81302-0671
PO BOX 672, DURANGO, CO 81302-0672
PO BOX 673, DURANGO, CO 81302-0673
PO BOX 674, DURANGO, CO 81302-0674
PO BOX 675, DURANGO, CO 81302-0675
PO BOX 676, DURANGO, CO 81302-0676
PO BOX 677, DURANGO, CO 81302-0677
PO BOX 678, DURANGO, CO 81302-0678
PO BOX 679, DURANGO, CO 81302-0679
PO BOX 680, DURANGO, CO 81302-0680
PO BOX 681, DURANGO, CO 81302-0681
PO BOX 682, DURANGO, CO 81302-0682
PO BOX 683, DURANGO, CO 81302-0683
PO BOX 684, DURANGO, CO 81302-0684
PO BOX 685, DURANGO, CO 81302-0685
PO BOX 686, DURANGO, CO 81302-0686
PO BOX 687, DURANGO, CO 81302-0687
PO BOX 688, DURANGO, CO 81302-0688
PO BOX 689, DURANGO, CO 81302-0689
PO BOX 690, DURANGO, CO 81302-0690
PO BOX 691, DURANGO, CO 81302-0691
PO BOX 692, DURANGO, CO 81302-0692
PO BOX 693, DURANGO, CO 81302-0693
PO BOX 694, DURANGO, CO 81302-0694
PO BOX 695, DURANGO, CO 81302-0695
PO BOX 696, DURANGO, CO 81302-0696
PO BOX 697, DURANGO, CO 81302-0697
PO BOX 698, DURANGO, CO 81302-0698
PO BOX 699, DURANGO, CO 81302-0699
PO BOX 700, DURANGO, CO 81302-0700
PO BOX 701, DURANGO, CO 81302-0701
PO BOX 702, DURANGO, CO 81302-0702
PO BOX 703, DURANGO, CO 81302-0703
PO BOX 704, DURANGO, CO 81302-0704
PO BOX 705, DURANGO, CO 81302-0705
PO BOX 706, DURANGO, CO 81302-0706
PO BOX 707, DURANGO, CO 81302-0707
PO BOX 708, DURANGO, CO 81302-0708
PO BOX 709, DURANGO, CO 81302-0709
PO BOX 710, DURANGO, CO 81302-0710
PO BOX 711, DURANGO, CO 81302-0711
PO BOX 712, DURANGO, CO 81302-0712
PO BOX 713, DURANGO, CO 81302-0713
PO BOX 714, DURANGO, CO 81302-0714
PO BOX 715, DURANGO, CO 81302-0715
PO BOX 716, DURANGO, CO 81302-0716
PO BOX 717, DURANGO, CO 81302-0717
PO BOX 718, DURANGO, CO 81302-0718
PO BOX 719, DURANGO, CO 81302-0719
PO BOX 720, DURANGO, CO 81302-0720
PO BOX 721, DURANGO, CO 81302-0721
PO BOX 722, DURANGO, CO 81302-0722
PO BOX 723, DURANGO, CO 81302-0723
PO BOX 724, DURANGO, CO 81302-0724
PO BOX 725, DURANGO, CO 81302-0725
PO BOX 726, DURANGO, CO 81302-0726
PO BOX 727, DURANGO, CO 81302-0727
PO BOX 728, DURANGO, CO 81302-0728
PO BOX 729, DURANGO, CO 81302-0729
PO BOX 730, DURANGO, CO 81302-0730
PO BOX 731, DURANGO, CO 81302-0731
PO BOX 732, DURANGO, CO 81302-0732
PO BOX 733, DURANGO, CO 81302-0733
PO BOX 734, DURANGO, CO 81302-0734
PO BOX 735, DURANGO, CO 81302-0735
PO BOX 736, DURANGO, CO 81302-0736
PO BOX 737, DURANGO, CO 81302-0737
PO BOX 738, DURANGO, CO 81302-0738
PO BOX 739, DURANGO, CO 81302-0739
PO BOX 740, DURANGO, CO 81302-0740
PO BOX 741, DURANGO, CO 81302-0741
PO BOX 742, DURANGO, CO 81302-0742
PO BOX 743, DURANGO, CO 81302-0743
PO BOX 744, DURANGO, CO 81302-0744
PO BOX 745, DURANGO, CO 81302-0745
PO BOX 746, DURANGO, CO 81302-0746
PO BOX 747, DURANGO, CO 81302-0747
PO BOX 748, DURANGO, CO 81302-0748
PO BOX 749, DURANGO, CO 81302-0749
PO BOX 750, DURANGO, CO 81302-0750
PO BOX 751, DURANGO, CO 81302-0751
PO BOX 752, DURANGO, CO 81302-0752
PO BOX 753, DURANGO, CO 81302-0753
PO BOX 754, DURANGO, CO 81302-0754
PO BOX 755, DURANGO, CO 81302-0755
PO BOX 756, DURANGO, CO 81302-0756
PO BOX 757, DURANGO, CO 81302-0757
PO BOX 758, DURANGO, CO 81302-0758
PO BOX 759, DURANGO, CO 81302-0759
PO BOX 760, DURANGO, CO 81302-0760
Add new comment