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 821, CITRUS HEIGHTS, CA 95611-0821
PO BOX 822, CITRUS HEIGHTS, CA 95611-0822
PO BOX 823, CITRUS HEIGHTS, CA 95611-0823
PO BOX 824, CITRUS HEIGHTS, CA 95611-0824
PO BOX 825, CITRUS HEIGHTS, CA 95611-0825
PO BOX 826, CITRUS HEIGHTS, CA 95611-0826
PO BOX 827, CITRUS HEIGHTS, CA 95611-0827
PO BOX 828, CITRUS HEIGHTS, CA 95611-0828
PO BOX 829, CITRUS HEIGHTS, CA 95611-0829
PO BOX 830, CITRUS HEIGHTS, CA 95611-0830
PO BOX 831, CITRUS HEIGHTS, CA 95611-0831
PO BOX 832, CITRUS HEIGHTS, CA 95611-0832
PO BOX 833, CITRUS HEIGHTS, CA 95611-0833
PO BOX 834, CITRUS HEIGHTS, CA 95611-0834
PO BOX 835, CITRUS HEIGHTS, CA 95611-0835
PO BOX 836, CITRUS HEIGHTS, CA 95611-0836
PO BOX 837, CITRUS HEIGHTS, CA 95611-0837
PO BOX 838, CITRUS HEIGHTS, CA 95611-0838
PO BOX 839, CITRUS HEIGHTS, CA 95611-0839
PO BOX 840, CITRUS HEIGHTS, CA 95611-0840
PO BOX 841, CITRUS HEIGHTS, CA 95611-0841
PO BOX 842, CITRUS HEIGHTS, CA 95611-0842
PO BOX 843, CITRUS HEIGHTS, CA 95611-0843
PO BOX 844, CITRUS HEIGHTS, CA 95611-0844
PO BOX 845, CITRUS HEIGHTS, CA 95611-0845
PO BOX 846, CITRUS HEIGHTS, CA 95611-0846
PO BOX 847, CITRUS HEIGHTS, CA 95611-0847
PO BOX 848, CITRUS HEIGHTS, CA 95611-0848
PO BOX 849, CITRUS HEIGHTS, CA 95611-0849
PO BOX 850, CITRUS HEIGHTS, CA 95611-0850
PO BOX 851, CITRUS HEIGHTS, CA 95611-0851
PO BOX 852, CITRUS HEIGHTS, CA 95611-0852
PO BOX 853, CITRUS HEIGHTS, CA 95611-0853
PO BOX 854, CITRUS HEIGHTS, CA 95611-0854
PO BOX 855, CITRUS HEIGHTS, CA 95611-0855
PO BOX 856, CITRUS HEIGHTS, CA 95611-0856
PO BOX 857, CITRUS HEIGHTS, CA 95611-0857
PO BOX 858, CITRUS HEIGHTS, CA 95611-0858
PO BOX 859, CITRUS HEIGHTS, CA 95611-0859
PO BOX 860, CITRUS HEIGHTS, CA 95611-0860
PO BOX 861, CITRUS HEIGHTS, CA 95611-0861
PO BOX 862, CITRUS HEIGHTS, CA 95611-0862
PO BOX 863, CITRUS HEIGHTS, CA 95611-0863
PO BOX 864, CITRUS HEIGHTS, CA 95611-0864
PO BOX 865, CITRUS HEIGHTS, CA 95611-0865
PO BOX 866, CITRUS HEIGHTS, CA 95611-0866
PO BOX 867, CITRUS HEIGHTS, CA 95611-0867
PO BOX 868, CITRUS HEIGHTS, CA 95611-0868
PO BOX 869, CITRUS HEIGHTS, CA 95611-0869
PO BOX 870, CITRUS HEIGHTS, CA 95611-0870
PO BOX 871, CITRUS HEIGHTS, CA 95611-0871
PO BOX 872, CITRUS HEIGHTS, CA 95611-0872
PO BOX 873, CITRUS HEIGHTS, CA 95611-0873
PO BOX 874, CITRUS HEIGHTS, CA 95611-0874
PO BOX 875, CITRUS HEIGHTS, CA 95611-0875
PO BOX 876, CITRUS HEIGHTS, CA 95611-0876
PO BOX 877, CITRUS HEIGHTS, CA 95611-0877
PO BOX 878, CITRUS HEIGHTS, CA 95611-0878
PO BOX 879, CITRUS HEIGHTS, CA 95611-0879
PO BOX 880, CITRUS HEIGHTS, CA 95611-0880
PO BOX 881, CITRUS HEIGHTS, CA 95611-0881
PO BOX 882, CITRUS HEIGHTS, CA 95611-0882
PO BOX 883, CITRUS HEIGHTS, CA 95611-0883
PO BOX 884, CITRUS HEIGHTS, CA 95611-0884
PO BOX 885, CITRUS HEIGHTS, CA 95611-0885
PO BOX 886, CITRUS HEIGHTS, CA 95611-0886
PO BOX 887, CITRUS HEIGHTS, CA 95611-0887
PO BOX 888, CITRUS HEIGHTS, CA 95611-0888
PO BOX 889, CITRUS HEIGHTS, CA 95611-0889
PO BOX 890, CITRUS HEIGHTS, CA 95611-0890
PO BOX 891, CITRUS HEIGHTS, CA 95611-0891
PO BOX 892, CITRUS HEIGHTS, CA 95611-0892
PO BOX 893, CITRUS HEIGHTS, CA 95611-0893
PO BOX 894, CITRUS HEIGHTS, CA 95611-0894
PO BOX 895, CITRUS HEIGHTS, CA 95611-0895
PO BOX 896, CITRUS HEIGHTS, CA 95611-0896
PO BOX 897, CITRUS HEIGHTS, CA 95611-0897
PO BOX 898, CITRUS HEIGHTS, CA 95611-0898
PO BOX 899, CITRUS HEIGHTS, CA 95611-0899
PO BOX 900, CITRUS HEIGHTS, CA 95611-0900
PO BOX 901, CITRUS HEIGHTS, CA 95611-0901
PO BOX 902, CITRUS HEIGHTS, CA 95611-0902
PO BOX 903, CITRUS HEIGHTS, CA 95611-0903
PO BOX 904, CITRUS HEIGHTS, CA 95611-0904
PO BOX 905, CITRUS HEIGHTS, CA 95611-0905
PO BOX 906, CITRUS HEIGHTS, CA 95611-0906
PO BOX 907, CITRUS HEIGHTS, CA 95611-0907
PO BOX 908, CITRUS HEIGHTS, CA 95611-0908
PO BOX 909, CITRUS HEIGHTS, CA 95611-0909
PO BOX 910, CITRUS HEIGHTS, CA 95611-0910
PO BOX 911, CITRUS HEIGHTS, CA 95611-0911
PO BOX 912, CITRUS HEIGHTS, CA 95611-0912
PO BOX 913, CITRUS HEIGHTS, CA 95611-0913
PO BOX 914, CITRUS HEIGHTS, CA 95611-0914
PO BOX 915, CITRUS HEIGHTS, CA 95611-0915
PO BOX 916, CITRUS HEIGHTS, CA 95611-0916
PO BOX 917, CITRUS HEIGHTS, CA 95611-0917
PO BOX 918, CITRUS HEIGHTS, CA 95611-0918
PO BOX 919, CITRUS HEIGHTS, CA 95611-0919
PO BOX 920, CITRUS HEIGHTS, CA 95611-0920
PO BOX 921, CITRUS HEIGHTS, CA 95611-0921
PO BOX 922, CITRUS HEIGHTS, CA 95611-0922
PO BOX 923, CITRUS HEIGHTS, CA 95611-0923
PO BOX 924, CITRUS HEIGHTS, CA 95611-0924
PO BOX 925, CITRUS HEIGHTS, CA 95611-0925
PO BOX 926, CITRUS HEIGHTS, CA 95611-0926
PO BOX 927, CITRUS HEIGHTS, CA 95611-0927
PO BOX 928, CITRUS HEIGHTS, CA 95611-0928
PO BOX 929, CITRUS HEIGHTS, CA 95611-0929
PO BOX 930, CITRUS HEIGHTS, CA 95611-0930
PO BOX 931, CITRUS HEIGHTS, CA 95611-0931
PO BOX 932, CITRUS HEIGHTS, CA 95611-0932
PO BOX 933, CITRUS HEIGHTS, CA 95611-0933
PO BOX 934, CITRUS HEIGHTS, CA 95611-0934
PO BOX 935, CITRUS HEIGHTS, CA 95611-0935
PO BOX 936, CITRUS HEIGHTS, CA 95611-0936
PO BOX 937, CITRUS HEIGHTS, CA 95611-0937
PO BOX 938, CITRUS HEIGHTS, CA 95611-0938
PO BOX 939, CITRUS HEIGHTS, CA 95611-0939
PO BOX 940, CITRUS HEIGHTS, CA 95611-0940
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