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 601, RANCHO CORDOVA, CA 95741-0601
PO BOX 602, RANCHO CORDOVA, CA 95741-0602
PO BOX 603, RANCHO CORDOVA, CA 95741-0603
PO BOX 604, RANCHO CORDOVA, CA 95741-0604
PO BOX 605, RANCHO CORDOVA, CA 95741-0605
PO BOX 606, RANCHO CORDOVA, CA 95741-0606
PO BOX 607, RANCHO CORDOVA, CA 95741-0607
PO BOX 608, RANCHO CORDOVA, CA 95741-0608
PO BOX 609, RANCHO CORDOVA, CA 95741-0609
PO BOX 610, RANCHO CORDOVA, CA 95741-0610
PO BOX 611, RANCHO CORDOVA, CA 95741-0611
PO BOX 612, RANCHO CORDOVA, CA 95741-0612
PO BOX 613, RANCHO CORDOVA, CA 95741-0613
PO BOX 614, RANCHO CORDOVA, CA 95741-0614
PO BOX 615, RANCHO CORDOVA, CA 95741-0615
PO BOX 616, RANCHO CORDOVA, CA 95741-0616
PO BOX 617, RANCHO CORDOVA, CA 95741-0617
PO BOX 618, RANCHO CORDOVA, CA 95741-0618
PO BOX 619, RANCHO CORDOVA, CA 95741-0619
PO BOX 620, RANCHO CORDOVA, CA 95741-0620
PO BOX 621, RANCHO CORDOVA, CA 95741-0621
PO BOX 622, RANCHO CORDOVA, CA 95741-0622
PO BOX 623, RANCHO CORDOVA, CA 95741-0623
PO BOX 624, RANCHO CORDOVA, CA 95741-0624
PO BOX 625, RANCHO CORDOVA, CA 95741-0625
PO BOX 626, RANCHO CORDOVA, CA 95741-0626
PO BOX 627, RANCHO CORDOVA, CA 95741-0627
PO BOX 628, RANCHO CORDOVA, CA 95741-0628
PO BOX 629, RANCHO CORDOVA, CA 95741-0629
PO BOX 630, RANCHO CORDOVA, CA 95741-0630
PO BOX 631, RANCHO CORDOVA, CA 95741-0631
PO BOX 632, RANCHO CORDOVA, CA 95741-0632
PO BOX 633, RANCHO CORDOVA, CA 95741-0633
PO BOX 634, RANCHO CORDOVA, CA 95741-0634
PO BOX 635, RANCHO CORDOVA, CA 95741-0635
PO BOX 636, RANCHO CORDOVA, CA 95741-0636
PO BOX 637, RANCHO CORDOVA, CA 95741-0637
PO BOX 638, RANCHO CORDOVA, CA 95741-0638
PO BOX 639, RANCHO CORDOVA, CA 95741-0639
PO BOX 640, RANCHO CORDOVA, CA 95741-0640
PO BOX 641, RANCHO CORDOVA, CA 95741-0641
PO BOX 642, RANCHO CORDOVA, CA 95741-0642
PO BOX 643, RANCHO CORDOVA, CA 95741-0643
PO BOX 644, RANCHO CORDOVA, CA 95741-0644
PO BOX 645, RANCHO CORDOVA, CA 95741-0645
PO BOX 646, RANCHO CORDOVA, CA 95741-0646
PO BOX 647, RANCHO CORDOVA, CA 95741-0647
PO BOX 648, RANCHO CORDOVA, CA 95741-0648
PO BOX 649, RANCHO CORDOVA, CA 95741-0649
PO BOX 650, RANCHO CORDOVA, CA 95741-0650
PO BOX 651, RANCHO CORDOVA, CA 95741-0651
PO BOX 652, RANCHO CORDOVA, CA 95741-0652
PO BOX 653, RANCHO CORDOVA, CA 95741-0653
PO BOX 654, RANCHO CORDOVA, CA 95741-0654
PO BOX 655, RANCHO CORDOVA, CA 95741-0655
PO BOX 656, RANCHO CORDOVA, CA 95741-0656
PO BOX 657, RANCHO CORDOVA, CA 95741-0657
PO BOX 658, RANCHO CORDOVA, CA 95741-0658
PO BOX 659, RANCHO CORDOVA, CA 95741-0659
PO BOX 660, RANCHO CORDOVA, CA 95741-0660
PO BOX 661, RANCHO CORDOVA, CA 95741-0661
PO BOX 662, RANCHO CORDOVA, CA 95741-0662
PO BOX 663, RANCHO CORDOVA, CA 95741-0663
PO BOX 664, RANCHO CORDOVA, CA 95741-0664
PO BOX 665, RANCHO CORDOVA, CA 95741-0665
PO BOX 666, RANCHO CORDOVA, CA 95741-0666
PO BOX 667, RANCHO CORDOVA, CA 95741-0667
PO BOX 668, RANCHO CORDOVA, CA 95741-0668
PO BOX 669, RANCHO CORDOVA, CA 95741-0669
PO BOX 670, RANCHO CORDOVA, CA 95741-0670
PO BOX 671, RANCHO CORDOVA, CA 95741-0671
PO BOX 672, RANCHO CORDOVA, CA 95741-0672
PO BOX 673, RANCHO CORDOVA, CA 95741-0673
PO BOX 674, RANCHO CORDOVA, CA 95741-0674
PO BOX 675, RANCHO CORDOVA, CA 95741-0675
PO BOX 676, RANCHO CORDOVA, CA 95741-0676
PO BOX 677, RANCHO CORDOVA, CA 95741-0677
PO BOX 678, RANCHO CORDOVA, CA 95741-0678
PO BOX 679, RANCHO CORDOVA, CA 95741-0679
PO BOX 680, RANCHO CORDOVA, CA 95741-0680
PO BOX 681, RANCHO CORDOVA, CA 95741-0681
PO BOX 682, RANCHO CORDOVA, CA 95741-0682
PO BOX 683, RANCHO CORDOVA, CA 95741-0683
PO BOX 684, RANCHO CORDOVA, CA 95741-0684
PO BOX 685, RANCHO CORDOVA, CA 95741-0685
PO BOX 686, RANCHO CORDOVA, CA 95741-0686
PO BOX 687, RANCHO CORDOVA, CA 95741-0687
PO BOX 688, RANCHO CORDOVA, CA 95741-0688
PO BOX 689, RANCHO CORDOVA, CA 95741-0689
PO BOX 690, RANCHO CORDOVA, CA 95741-0690
PO BOX 691, RANCHO CORDOVA, CA 95741-0691
PO BOX 692, RANCHO CORDOVA, CA 95741-0692
PO BOX 693, RANCHO CORDOVA, CA 95741-0693
PO BOX 694, RANCHO CORDOVA, CA 95741-0694
PO BOX 695, RANCHO CORDOVA, CA 95741-0695
PO BOX 696, RANCHO CORDOVA, CA 95741-0696
PO BOX 697, RANCHO CORDOVA, CA 95741-0697
PO BOX 698, RANCHO CORDOVA, CA 95741-0698
PO BOX 699, RANCHO CORDOVA, CA 95741-0699
PO BOX 700, RANCHO CORDOVA, CA 95741-0700
PO BOX 701, RANCHO CORDOVA, CA 95741-0701
PO BOX 702, RANCHO CORDOVA, CA 95741-0702
PO BOX 703, RANCHO CORDOVA, CA 95741-0703
PO BOX 704, RANCHO CORDOVA, CA 95741-0704
PO BOX 705, RANCHO CORDOVA, CA 95741-0705
PO BOX 706, RANCHO CORDOVA, CA 95741-0706
PO BOX 707, RANCHO CORDOVA, CA 95741-0707
PO BOX 708, RANCHO CORDOVA, CA 95741-0708
PO BOX 709, RANCHO CORDOVA, CA 95741-0709
PO BOX 710, RANCHO CORDOVA, CA 95741-0710
PO BOX 711, RANCHO CORDOVA, CA 95741-0711
PO BOX 712, RANCHO CORDOVA, CA 95741-0712
PO BOX 713, RANCHO CORDOVA, CA 95741-0713
PO BOX 714, RANCHO CORDOVA, CA 95741-0714
PO BOX 715, RANCHO CORDOVA, CA 95741-0715
PO BOX 716, RANCHO CORDOVA, CA 95741-0716
PO BOX 717, RANCHO CORDOVA, CA 95741-0717
PO BOX 718, RANCHO CORDOVA, CA 95741-0718
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