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 801, GREEN COVE SPRINGS, FL 32043-0801
PO BOX 802, GREEN COVE SPRINGS, FL 32043-0802
PO BOX 803, GREEN COVE SPRINGS, FL 32043-0803
PO BOX 804, GREEN COVE SPRINGS, FL 32043-0804
PO BOX 805, GREEN COVE SPRINGS, FL 32043-0805
PO BOX 806, GREEN COVE SPRINGS, FL 32043-0806
PO BOX 807, GREEN COVE SPRINGS, FL 32043-0807
PO BOX 808, GREEN COVE SPRINGS, FL 32043-0808
PO BOX 809, GREEN COVE SPRINGS, FL 32043-0809
PO BOX 810, GREEN COVE SPRINGS, FL 32043-0810
PO BOX 811, GREEN COVE SPRINGS, FL 32043-0811
PO BOX 812, GREEN COVE SPRINGS, FL 32043-0812
PO BOX 813, GREEN COVE SPRINGS, FL 32043-0813
PO BOX 814, GREEN COVE SPRINGS, FL 32043-0814
PO BOX 815, GREEN COVE SPRINGS, FL 32043-0815
PO BOX 816, GREEN COVE SPRINGS, FL 32043-0816
PO BOX 817, GREEN COVE SPRINGS, FL 32043-0817
PO BOX 818, GREEN COVE SPRINGS, FL 32043-0818
PO BOX 819, GREEN COVE SPRINGS, FL 32043-0819
PO BOX 820, GREEN COVE SPRINGS, FL 32043-0820
PO BOX 821, GREEN COVE SPRINGS, FL 32043-0821
PO BOX 822, GREEN COVE SPRINGS, FL 32043-0822
PO BOX 823, GREEN COVE SPRINGS, FL 32043-0823
PO BOX 824, GREEN COVE SPRINGS, FL 32043-0824
PO BOX 825, GREEN COVE SPRINGS, FL 32043-0825
PO BOX 826, GREEN COVE SPRINGS, FL 32043-0826
PO BOX 827, GREEN COVE SPRINGS, FL 32043-0827
PO BOX 828, GREEN COVE SPRINGS, FL 32043-0828
PO BOX 829, GREEN COVE SPRINGS, FL 32043-0829
PO BOX 830, GREEN COVE SPRINGS, FL 32043-0830
PO BOX 831, GREEN COVE SPRINGS, FL 32043-0831
PO BOX 832, GREEN COVE SPRINGS, FL 32043-0832
PO BOX 833, GREEN COVE SPRINGS, FL 32043-0833
PO BOX 834, GREEN COVE SPRINGS, FL 32043-0834
PO BOX 835, GREEN COVE SPRINGS, FL 32043-0835
PO BOX 836, GREEN COVE SPRINGS, FL 32043-0836
PO BOX 837, GREEN COVE SPRINGS, FL 32043-0837
PO BOX 838, GREEN COVE SPRINGS, FL 32043-0838
PO BOX 839, GREEN COVE SPRINGS, FL 32043-0839
PO BOX 840, GREEN COVE SPRINGS, FL 32043-0840
PO BOX 841, GREEN COVE SPRINGS, FL 32043-0841
PO BOX 842, GREEN COVE SPRINGS, FL 32043-0842
PO BOX 843, GREEN COVE SPRINGS, FL 32043-0843
PO BOX 844, GREEN COVE SPRINGS, FL 32043-0844
PO BOX 845, GREEN COVE SPRINGS, FL 32043-0845
PO BOX 846, GREEN COVE SPRINGS, FL 32043-0846
PO BOX 847, GREEN COVE SPRINGS, FL 32043-0847
PO BOX 848, GREEN COVE SPRINGS, FL 32043-0848
PO BOX 849, GREEN COVE SPRINGS, FL 32043-0849
PO BOX 850, GREEN COVE SPRINGS, FL 32043-0850
PO BOX 851, GREEN COVE SPRINGS, FL 32043-0851
PO BOX 852, GREEN COVE SPRINGS, FL 32043-0852
PO BOX 853, GREEN COVE SPRINGS, FL 32043-0853
PO BOX 854, GREEN COVE SPRINGS, FL 32043-0854
PO BOX 855, GREEN COVE SPRINGS, FL 32043-0855
PO BOX 856, GREEN COVE SPRINGS, FL 32043-0856
PO BOX 857, GREEN COVE SPRINGS, FL 32043-0857
PO BOX 858, GREEN COVE SPRINGS, FL 32043-0858
PO BOX 859, GREEN COVE SPRINGS, FL 32043-0859
PO BOX 860, GREEN COVE SPRINGS, FL 32043-0860
PO BOX 861, GREEN COVE SPRINGS, FL 32043-0861
PO BOX 862, GREEN COVE SPRINGS, FL 32043-0862
PO BOX 863, GREEN COVE SPRINGS, FL 32043-0863
PO BOX 864, GREEN COVE SPRINGS, FL 32043-0864
PO BOX 865, GREEN COVE SPRINGS, FL 32043-0865
PO BOX 866, GREEN COVE SPRINGS, FL 32043-0866
PO BOX 867, GREEN COVE SPRINGS, FL 32043-0867
PO BOX 868, GREEN COVE SPRINGS, FL 32043-0868
PO BOX 869, GREEN COVE SPRINGS, FL 32043-0869
PO BOX 870, GREEN COVE SPRINGS, FL 32043-0870
PO BOX 871, GREEN COVE SPRINGS, FL 32043-0871
PO BOX 872, GREEN COVE SPRINGS, FL 32043-0872
PO BOX 873, GREEN COVE SPRINGS, FL 32043-0873
PO BOX 874, GREEN COVE SPRINGS, FL 32043-0874
PO BOX 875, GREEN COVE SPRINGS, FL 32043-0875
PO BOX 876, GREEN COVE SPRINGS, FL 32043-0876
PO BOX 877, GREEN COVE SPRINGS, FL 32043-0877
PO BOX 878, GREEN COVE SPRINGS, FL 32043-0878
PO BOX 879, GREEN COVE SPRINGS, FL 32043-0879
PO BOX 880, GREEN COVE SPRINGS, FL 32043-0880
PO BOX 881, GREEN COVE SPRINGS, FL 32043-0881
PO BOX 882, GREEN COVE SPRINGS, FL 32043-0882
PO BOX 883, GREEN COVE SPRINGS, FL 32043-0883
PO BOX 884, GREEN COVE SPRINGS, FL 32043-0884
PO BOX 885, GREEN COVE SPRINGS, FL 32043-0885
PO BOX 886, GREEN COVE SPRINGS, FL 32043-0886
PO BOX 887, GREEN COVE SPRINGS, FL 32043-0887
PO BOX 888, GREEN COVE SPRINGS, FL 32043-0888
PO BOX 889, GREEN COVE SPRINGS, FL 32043-0889
PO BOX 890, GREEN COVE SPRINGS, FL 32043-0890
PO BOX 891, GREEN COVE SPRINGS, FL 32043-0891
PO BOX 892, GREEN COVE SPRINGS, FL 32043-0892
PO BOX 893, GREEN COVE SPRINGS, FL 32043-0893
PO BOX 894, GREEN COVE SPRINGS, FL 32043-0894
PO BOX 895, GREEN COVE SPRINGS, FL 32043-0895
PO BOX 896, GREEN COVE SPRINGS, FL 32043-0896
PO BOX 897, GREEN COVE SPRINGS, FL 32043-0897
PO BOX 898, GREEN COVE SPRINGS, FL 32043-0898
PO BOX 899, GREEN COVE SPRINGS, FL 32043-0899
PO BOX 900, GREEN COVE SPRINGS, FL 32043-0900
PO BOX 901, GREEN COVE SPRINGS, FL 32043-0901
PO BOX 902, GREEN COVE SPRINGS, FL 32043-0902
PO BOX 903, GREEN COVE SPRINGS, FL 32043-0903
PO BOX 904, GREEN COVE SPRINGS, FL 32043-0904
PO BOX 905, GREEN COVE SPRINGS, FL 32043-0905
PO BOX 906, GREEN COVE SPRINGS, FL 32043-0906
PO BOX 907, GREEN COVE SPRINGS, FL 32043-0907
PO BOX 908, GREEN COVE SPRINGS, FL 32043-0908
PO BOX 909, GREEN COVE SPRINGS, FL 32043-0909
PO BOX 910, GREEN COVE SPRINGS, FL 32043-0910
PO BOX 911, GREEN COVE SPRINGS, FL 32043-0911
PO BOX 912, GREEN COVE SPRINGS, FL 32043-0912
PO BOX 913, GREEN COVE SPRINGS, FL 32043-0913
PO BOX 914, GREEN COVE SPRINGS, FL 32043-0914
PO BOX 915, GREEN COVE SPRINGS, FL 32043-0915
PO BOX 916, GREEN COVE SPRINGS, FL 32043-0916
PO BOX 917, GREEN COVE SPRINGS, FL 32043-0917
PO BOX 918, GREEN COVE SPRINGS, FL 32043-0918
PO BOX 919, GREEN COVE SPRINGS, FL 32043-0919
PO BOX 920, GREEN COVE SPRINGS, FL 32043-0920
PO BOX 921, GREEN COVE SPRINGS, FL 32043-0921
PO BOX 922, GREEN COVE SPRINGS, FL 32043-0922
PO BOX 923, GREEN COVE SPRINGS, FL 32043-0923
PO BOX 924, GREEN COVE SPRINGS, FL 32043-0924
PO BOX 925, GREEN COVE SPRINGS, FL 32043-0925
PO BOX 926, GREEN COVE SPRINGS, FL 32043-0926
PO BOX 927, GREEN COVE SPRINGS, FL 32043-0927
PO BOX 928, GREEN COVE SPRINGS, FL 32043-0928
PO BOX 929, GREEN COVE SPRINGS, FL 32043-0929
PO BOX 930, GREEN COVE SPRINGS, FL 32043-0930
PO BOX 931, GREEN COVE SPRINGS, FL 32043-0931
PO BOX 932, GREEN COVE SPRINGS, FL 32043-0932
PO BOX 933, GREEN COVE SPRINGS, FL 32043-0933
PO BOX 934, GREEN COVE SPRINGS, FL 32043-0934
PO BOX 935, GREEN COVE SPRINGS, FL 32043-0935
PO BOX 936, GREEN COVE SPRINGS, FL 32043-0936
PO BOX 937, GREEN COVE SPRINGS, FL 32043-0937
PO BOX 938, GREEN COVE SPRINGS, FL 32043-0938
PO BOX 939, GREEN COVE SPRINGS, FL 32043-0939
PO BOX 940, GREEN COVE SPRINGS, FL 32043-0940
PO BOX 941, GREEN COVE SPRINGS, FL 32043-0941
PO BOX 942, GREEN COVE SPRINGS, FL 32043-0942
PO BOX 943, GREEN COVE SPRINGS, FL 32043-0943
PO BOX 944, GREEN COVE SPRINGS, FL 32043-0944
PO BOX 945, GREEN COVE SPRINGS, FL 32043-0945
PO BOX 946, GREEN COVE SPRINGS, FL 32043-0946
PO BOX 947, GREEN COVE SPRINGS, FL 32043-0947
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