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 761, LANCASTER, CA 93584-0761
PO BOX 762, LANCASTER, CA 93584-0762
PO BOX 763, LANCASTER, CA 93584-0763
PO BOX 764, LANCASTER, CA 93584-0764
PO BOX 765, LANCASTER, CA 93584-0765
PO BOX 766, LANCASTER, CA 93584-0766
PO BOX 767, LANCASTER, CA 93584-0767
PO BOX 768, LANCASTER, CA 93584-0768
PO BOX 769, LANCASTER, CA 93584-0769
PO BOX 770, LANCASTER, CA 93584-0770
PO BOX 771, LANCASTER, CA 93584-0771
PO BOX 772, LANCASTER, CA 93584-0772
PO BOX 773, LANCASTER, CA 93584-0773
PO BOX 774, LANCASTER, CA 93584-0774
PO BOX 775, LANCASTER, CA 93584-0775
PO BOX 776, LANCASTER, CA 93584-0776
PO BOX 777, LANCASTER, CA 93584-0777
PO BOX 778, LANCASTER, CA 93584-0778
PO BOX 779, LANCASTER, CA 93584-0779
PO BOX 780, LANCASTER, CA 93584-0780
PO BOX 781, LANCASTER, CA 93584-0781
PO BOX 782, LANCASTER, CA 93584-0782
PO BOX 783, LANCASTER, CA 93584-0783
PO BOX 784, LANCASTER, CA 93584-0784
PO BOX 785, LANCASTER, CA 93584-0785
PO BOX 786, LANCASTER, CA 93584-0786
PO BOX 787, LANCASTER, CA 93584-0787
PO BOX 788, LANCASTER, CA 93584-0788
PO BOX 789, LANCASTER, CA 93584-0789
PO BOX 790, LANCASTER, CA 93584-0790
PO BOX 791, LANCASTER, CA 93584-0791
PO BOX 792, LANCASTER, CA 93584-0792
PO BOX 793, LANCASTER, CA 93584-0793
PO BOX 794, LANCASTER, CA 93584-0794
PO BOX 795, LANCASTER, CA 93584-0795
PO BOX 796, LANCASTER, CA 93584-0796
PO BOX 797, LANCASTER, CA 93584-0797
PO BOX 798, LANCASTER, CA 93584-0798
PO BOX 799, LANCASTER, CA 93584-0799
PO BOX 800, LANCASTER, CA 93584-0800
PO BOX 801, LANCASTER, CA 93584-0801
PO BOX 802, LANCASTER, CA 93584-0802
PO BOX 803, LANCASTER, CA 93584-0803
PO BOX 804, LANCASTER, CA 93584-0804
PO BOX 805, LANCASTER, CA 93584-0805
PO BOX 806, LANCASTER, CA 93584-0806
PO BOX 807, LANCASTER, CA 93584-0807
PO BOX 808, LANCASTER, CA 93584-0808
PO BOX 809, LANCASTER, CA 93584-0809
PO BOX 810, LANCASTER, CA 93584-0810
PO BOX 811, LANCASTER, CA 93584-0811
PO BOX 812, LANCASTER, CA 93584-0812
PO BOX 813, LANCASTER, CA 93584-0813
PO BOX 814, LANCASTER, CA 93584-0814
PO BOX 815, LANCASTER, CA 93584-0815
PO BOX 816, LANCASTER, CA 93584-0816
PO BOX 817, LANCASTER, CA 93584-0817
PO BOX 818, LANCASTER, CA 93584-0818
PO BOX 819, LANCASTER, CA 93584-0819
PO BOX 820, LANCASTER, CA 93584-0820
PO BOX 821, LANCASTER, CA 93584-0821
PO BOX 822, LANCASTER, CA 93584-0822
PO BOX 823, LANCASTER, CA 93584-0823
PO BOX 824, LANCASTER, CA 93584-0824
PO BOX 825, LANCASTER, CA 93584-0825
PO BOX 826, LANCASTER, CA 93584-0826
PO BOX 827, LANCASTER, CA 93584-0827
PO BOX 828, LANCASTER, CA 93584-0828
PO BOX 829, LANCASTER, CA 93584-0829
PO BOX 830, LANCASTER, CA 93584-0830
PO BOX 831, LANCASTER, CA 93584-0831
PO BOX 832, LANCASTER, CA 93584-0832
PO BOX 833, LANCASTER, CA 93584-0833
PO BOX 834, LANCASTER, CA 93584-0834
PO BOX 835, LANCASTER, CA 93584-0835
PO BOX 836, LANCASTER, CA 93584-0836
PO BOX 837, LANCASTER, CA 93584-0837
PO BOX 838, LANCASTER, CA 93584-0838
PO BOX 839, LANCASTER, CA 93584-0839
PO BOX 840, LANCASTER, CA 93584-0840
PO BOX 841, LANCASTER, CA 93584-0841
PO BOX 842, LANCASTER, CA 93584-0842
PO BOX 843, LANCASTER, CA 93584-0843
PO BOX 844, LANCASTER, CA 93584-0844
PO BOX 845, LANCASTER, CA 93584-0845
PO BOX 846, LANCASTER, CA 93584-0846
PO BOX 847, LANCASTER, CA 93584-0847
PO BOX 848, LANCASTER, CA 93584-0848
PO BOX 849, LANCASTER, CA 93584-0849
PO BOX 850, LANCASTER, CA 93584-0850
PO BOX 851, LANCASTER, CA 93584-0851
PO BOX 852, LANCASTER, CA 93584-0852
PO BOX 853, LANCASTER, CA 93584-0853
PO BOX 854, LANCASTER, CA 93584-0854
PO BOX 855, LANCASTER, CA 93584-0855
PO BOX 856, LANCASTER, CA 93584-0856
PO BOX 857, LANCASTER, CA 93584-0857
PO BOX 858, LANCASTER, CA 93584-0858
PO BOX 859, LANCASTER, CA 93584-0859
PO BOX 860, LANCASTER, CA 93584-0860
PO BOX 861, LANCASTER, CA 93584-0861
PO BOX 862, LANCASTER, CA 93584-0862
PO BOX 863, LANCASTER, CA 93584-0863
PO BOX 864, LANCASTER, CA 93584-0864
PO BOX 865, LANCASTER, CA 93584-0865
PO BOX 866, LANCASTER, CA 93584-0866
PO BOX 867, LANCASTER, CA 93584-0867
PO BOX 868, LANCASTER, CA 93584-0868
PO BOX 869, LANCASTER, CA 93584-0869
PO BOX 870, LANCASTER, CA 93584-0870
PO BOX 871, LANCASTER, CA 93584-0871
PO BOX 872, LANCASTER, CA 93584-0872
PO BOX 873, LANCASTER, CA 93584-0873
PO BOX 874, LANCASTER, CA 93584-0874
PO BOX 875, LANCASTER, CA 93584-0875
PO BOX 876, LANCASTER, CA 93584-0876
PO BOX 877, LANCASTER, CA 93584-0877
PO BOX 878, LANCASTER, CA 93584-0878
PO BOX 879, LANCASTER, CA 93584-0879
PO BOX 880, LANCASTER, CA 93584-0880
PO BOX 881, LANCASTER, CA 93584-0881
PO BOX 882, LANCASTER, CA 93584-0882
PO BOX 883, LANCASTER, CA 93584-0883
PO BOX 884, LANCASTER, CA 93584-0884
PO BOX 885, LANCASTER, CA 93584-0885
PO BOX 886, LANCASTER, CA 93584-0886
PO BOX 887, LANCASTER, CA 93584-0887
PO BOX 888, LANCASTER, CA 93584-0888
PO BOX 889, LANCASTER, CA 93584-0889
PO BOX 890, LANCASTER, CA 93584-0890
PO BOX 891, LANCASTER, CA 93584-0891
PO BOX 892, LANCASTER, CA 93584-0892
PO BOX 893, LANCASTER, CA 93584-0893
PO BOX 894, LANCASTER, CA 93584-0894
PO BOX 895, LANCASTER, CA 93584-0895
PO BOX 896, LANCASTER, CA 93584-0896
PO BOX 897, LANCASTER, CA 93584-0897
PO BOX 898, LANCASTER, CA 93584-0898
PO BOX 899, LANCASTER, CA 93584-0899
PO BOX 900, LANCASTER, CA 93584-0900
PO BOX 901, LANCASTER, CA 93584-0901
PO BOX 902, LANCASTER, CA 93584-0902
PO BOX 903, LANCASTER, CA 93584-0903
PO BOX 904, LANCASTER, CA 93584-0904
PO BOX 905, LANCASTER, CA 93584-0905
PO BOX 906, LANCASTER, CA 93584-0906
PO BOX 907, LANCASTER, CA 93584-0907
PO BOX 908, LANCASTER, CA 93584-0908
PO BOX 909, LANCASTER, CA 93584-0909
PO BOX 910, LANCASTER, CA 93584-0910
PO BOX 911, LANCASTER, CA 93584-0911
PO BOX 912, LANCASTER, CA 93584-0912
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