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 851, FRANKLINTON, NC 27525-0851
PO BOX 852, FRANKLINTON, NC 27525-0852
PO BOX 853, FRANKLINTON, NC 27525-0853
PO BOX 854, FRANKLINTON, NC 27525-0854
PO BOX 855, FRANKLINTON, NC 27525-0855
PO BOX 856, FRANKLINTON, NC 27525-0856
PO BOX 857, FRANKLINTON, NC 27525-0857
PO BOX 858, FRANKLINTON, NC 27525-0858
PO BOX 859, FRANKLINTON, NC 27525-0859
PO BOX 860, FRANKLINTON, NC 27525-0860
PO BOX 861, FRANKLINTON, NC 27525-0861
PO BOX 862, FRANKLINTON, NC 27525-0862
PO BOX 863, FRANKLINTON, NC 27525-0863
PO BOX 864, FRANKLINTON, NC 27525-0864
PO BOX 865, FRANKLINTON, NC 27525-0865
PO BOX 866, FRANKLINTON, NC 27525-0866
PO BOX 867, FRANKLINTON, NC 27525-0867
PO BOX 868, FRANKLINTON, NC 27525-0868
PO BOX 869, FRANKLINTON, NC 27525-0869
PO BOX 870, FRANKLINTON, NC 27525-0870
PO BOX 871, FRANKLINTON, NC 27525-0871
PO BOX 872, FRANKLINTON, NC 27525-0872
PO BOX 873, FRANKLINTON, NC 27525-0873
PO BOX 874, FRANKLINTON, NC 27525-0874
PO BOX 875, FRANKLINTON, NC 27525-0875
PO BOX 876, FRANKLINTON, NC 27525-0876
PO BOX 877, FRANKLINTON, NC 27525-0877
PO BOX 878, FRANKLINTON, NC 27525-0878
PO BOX 879, FRANKLINTON, NC 27525-0879
PO BOX 880, FRANKLINTON, NC 27525-0880
PO BOX 881, FRANKLINTON, NC 27525-0881
PO BOX 882, FRANKLINTON, NC 27525-0882
PO BOX 883, FRANKLINTON, NC 27525-0883
PO BOX 884, FRANKLINTON, NC 27525-0884
PO BOX 885, FRANKLINTON, NC 27525-0885
PO BOX 886, FRANKLINTON, NC 27525-0886
PO BOX 887, FRANKLINTON, NC 27525-0887
PO BOX 888, FRANKLINTON, NC 27525-0888
PO BOX 889, FRANKLINTON, NC 27525-0889
PO BOX 890, FRANKLINTON, NC 27525-0890
PO BOX 891, FRANKLINTON, NC 27525-0891
PO BOX 892, FRANKLINTON, NC 27525-0892
PO BOX 893, FRANKLINTON, NC 27525-0893
PO BOX 894, FRANKLINTON, NC 27525-0894
PO BOX 895, FRANKLINTON, NC 27525-0895
PO BOX 896, FRANKLINTON, NC 27525-0896
PO BOX 897, FRANKLINTON, NC 27525-0897
PO BOX 898, FRANKLINTON, NC 27525-0898
PO BOX 899, FRANKLINTON, NC 27525-0899
PO BOX 900, FRANKLINTON, NC 27525-0900
PO BOX 901, FRANKLINTON, NC 27525-0901
PO BOX 902, FRANKLINTON, NC 27525-0902
PO BOX 903, FRANKLINTON, NC 27525-0903
PO BOX 904, FRANKLINTON, NC 27525-0904
PO BOX 905, FRANKLINTON, NC 27525-0905
PO BOX 906, FRANKLINTON, NC 27525-0906
PO BOX 907, FRANKLINTON, NC 27525-0907
PO BOX 908, FRANKLINTON, NC 27525-0908
PO BOX 909, FRANKLINTON, NC 27525-0909
PO BOX 910, FRANKLINTON, NC 27525-0910
PO BOX 911, FRANKLINTON, NC 27525-0911
PO BOX 912, FRANKLINTON, NC 27525-0912
PO BOX 913, FRANKLINTON, NC 27525-0913
PO BOX 914, FRANKLINTON, NC 27525-0914
PO BOX 915, FRANKLINTON, NC 27525-0915
PO BOX 916, FRANKLINTON, NC 27525-0916
PO BOX 917, FRANKLINTON, NC 27525-0917
PO BOX 918, FRANKLINTON, NC 27525-0918
PO BOX 919, FRANKLINTON, NC 27525-0919
PO BOX 920, FRANKLINTON, NC 27525-0920
PO BOX 921, FRANKLINTON, NC 27525-0921
PO BOX 922, FRANKLINTON, NC 27525-0922
PO BOX 923, FRANKLINTON, NC 27525-0923
PO BOX 924, FRANKLINTON, NC 27525-0924
PO BOX 925, FRANKLINTON, NC 27525-0925
PO BOX 926, FRANKLINTON, NC 27525-0926
PO BOX 927, FRANKLINTON, NC 27525-0927
PO BOX 928, FRANKLINTON, NC 27525-0928
PO BOX 929, FRANKLINTON, NC 27525-0929
PO BOX 930, FRANKLINTON, NC 27525-0930
PO BOX 931, FRANKLINTON, NC 27525-0931
PO BOX 932, FRANKLINTON, NC 27525-0932
PO BOX 933, FRANKLINTON, NC 27525-0933
PO BOX 934, FRANKLINTON, NC 27525-0934
PO BOX 935, FRANKLINTON, NC 27525-0935
PO BOX 936, FRANKLINTON, NC 27525-0936
PO BOX 937, FRANKLINTON, NC 27525-0937
PO BOX 938, FRANKLINTON, NC 27525-0938
PO BOX 939, FRANKLINTON, NC 27525-0939
PO BOX 940, FRANKLINTON, NC 27525-0940
PO BOX 941, FRANKLINTON, NC 27525-0941
PO BOX 942, FRANKLINTON, NC 27525-0942
PO BOX 943, FRANKLINTON, NC 27525-0943
PO BOX 944, FRANKLINTON, NC 27525-0944
PO BOX 945, FRANKLINTON, NC 27525-0945
PO BOX 946, FRANKLINTON, NC 27525-0946
PO BOX 947, FRANKLINTON, NC 27525-0947
PO BOX 948, FRANKLINTON, NC 27525-0948
PO BOX 949, FRANKLINTON, NC 27525-0949
PO BOX 950, FRANKLINTON, NC 27525-0950
PO BOX 951, FRANKLINTON, NC 27525-0951
PO BOX 952, FRANKLINTON, NC 27525-0952
PO BOX 953, FRANKLINTON, NC 27525-0953
PO BOX 954, FRANKLINTON, NC 27525-0954
PO BOX 955, FRANKLINTON, NC 27525-0955
PO BOX 956, FRANKLINTON, NC 27525-0956
PO BOX 957, FRANKLINTON, NC 27525-0957
PO BOX 958, FRANKLINTON, NC 27525-0958
PO BOX 959, FRANKLINTON, NC 27525-0959
PO BOX 960, FRANKLINTON, NC 27525-0960
PO BOX 961, FRANKLINTON, NC 27525-0961
PO BOX 962, FRANKLINTON, NC 27525-0962
PO BOX 963, FRANKLINTON, NC 27525-0963
PO BOX 964, FRANKLINTON, NC 27525-0964
PO BOX 965, FRANKLINTON, NC 27525-0965
PO BOX 966, FRANKLINTON, NC 27525-0966
PO BOX 967, FRANKLINTON, NC 27525-0967
PO BOX 968, FRANKLINTON, NC 27525-0968
PO BOX 969, FRANKLINTON, NC 27525-0969
PO BOX 970, FRANKLINTON, NC 27525-0970
PO BOX 971, FRANKLINTON, NC 27525-0971
PO BOX 972, FRANKLINTON, NC 27525-0972
PO BOX 973, FRANKLINTON, NC 27525-0973
PO BOX 974, FRANKLINTON, NC 27525-0974
PO BOX 975, FRANKLINTON, NC 27525-0975
PO BOX 976, FRANKLINTON, NC 27525-0976
PO BOX 977, FRANKLINTON, NC 27525-0977
PO BOX 978, FRANKLINTON, NC 27525-0978
PO BOX 979, FRANKLINTON, NC 27525-0979
PO BOX 980, FRANKLINTON, NC 27525-0980
PO BOX 981, FRANKLINTON, NC 27525-0981
PO BOX 982, FRANKLINTON, NC 27525-0982
PO BOX 983, FRANKLINTON, NC 27525-0983
PO BOX 984, FRANKLINTON, NC 27525-0984
PO BOX 985, FRANKLINTON, NC 27525-0985
PO BOX 986, FRANKLINTON, NC 27525-0986
PO BOX 987, FRANKLINTON, NC 27525-0987
PO BOX 988, FRANKLINTON, NC 27525-0988
PO BOX 989, FRANKLINTON, NC 27525-0989
PO BOX 990, FRANKLINTON, NC 27525-0990
PO BOX 991, FRANKLINTON, NC 27525-0991
PO BOX 992, FRANKLINTON, NC 27525-0992
PO BOX 993, FRANKLINTON, NC 27525-0993
PO BOX 994, FRANKLINTON, NC 27525-0994
PO BOX 995, FRANKLINTON, NC 27525-0995
PO BOX 996, FRANKLINTON, NC 27525-0996
PO BOX 997, FRANKLINTON, NC 27525-0997
PO BOX 998, FRANKLINTON, NC 27525-0998
PO BOX 999, FRANKLINTON, NC 27525-0999
PO BOX 1000, FRANKLINTON, NC 27525-1000
PO BOX 1001, FRANKLINTON, NC 27525-1001
PO BOX 1002, FRANKLINTON, NC 27525-1002
PO BOX 1003, FRANKLINTON, NC 27525-1003
PO BOX 1004, FRANKLINTON, NC 27525-1004
PO BOX 1005, FRANKLINTON, NC 27525-1005
PO BOX 1006, FRANKLINTON, NC 27525-1006
PO BOX 1007, FRANKLINTON, NC 27525-1007
PO BOX 1008, FRANKLINTON, NC 27525-1008
PO BOX 1009, FRANKLINTON, NC 27525-1009
PO BOX 1010, FRANKLINTON, NC 27525-1010
PO BOX 1011, FRANKLINTON, NC 27525-1011
PO BOX 1012, FRANKLINTON, NC 27525-1012
PO BOX 1013, FRANKLINTON, NC 27525-1013
PO BOX 1014, FRANKLINTON, NC 27525-1014
PO BOX 1015, FRANKLINTON, NC 27525-1015
PO BOX 1016, FRANKLINTON, NC 27525-1016
PO BOX 1017, FRANKLINTON, NC 27525-1017
PO BOX 1018, FRANKLINTON, NC 27525-1018
PO BOX 1019, FRANKLINTON, NC 27525-1019
PO BOX 1020, FRANKLINTON, NC 27525-1020
PO BOX 1021, FRANKLINTON, NC 27525-1021
PO BOX 1022, FRANKLINTON, NC 27525-1022
PO BOX 1023, FRANKLINTON, NC 27525-1023
PO BOX 1024, FRANKLINTON, NC 27525-1024
PO BOX 1025, FRANKLINTON, NC 27525-1025
PO BOX 1026, FRANKLINTON, NC 27525-1026
PO BOX 1027, FRANKLINTON, NC 27525-1027
PO BOX 1028, FRANKLINTON, NC 27525-1028
PO BOX 1029, FRANKLINTON, NC 27525-1029
PO BOX 1030, FRANKLINTON, NC 27525-1030
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