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 921, SALEMBURG, NC 28385-0921
PO BOX 922, SALEMBURG, NC 28385-0922
PO BOX 923, SALEMBURG, NC 28385-0923
PO BOX 924, SALEMBURG, NC 28385-0924
PO BOX 925, SALEMBURG, NC 28385-0925
PO BOX 926, SALEMBURG, NC 28385-0926
PO BOX 927, SALEMBURG, NC 28385-0927
PO BOX 928, SALEMBURG, NC 28385-0928
PO BOX 929, SALEMBURG, NC 28385-0929
PO BOX 930, SALEMBURG, NC 28385-0930
PO BOX 931, SALEMBURG, NC 28385-0931
PO BOX 932, SALEMBURG, NC 28385-0932
PO BOX 933, SALEMBURG, NC 28385-0933
PO BOX 934, SALEMBURG, NC 28385-0934
PO BOX 935, SALEMBURG, NC 28385-0935
PO BOX 936, SALEMBURG, NC 28385-0936
PO BOX 937, SALEMBURG, NC 28385-0937
PO BOX 938, SALEMBURG, NC 28385-0938
PO BOX 939, SALEMBURG, NC 28385-0939
PO BOX 940, SALEMBURG, NC 28385-0940
PO BOX 941, SALEMBURG, NC 28385-0941
PO BOX 942, SALEMBURG, NC 28385-0942
PO BOX 943, SALEMBURG, NC 28385-0943
PO BOX 944, SALEMBURG, NC 28385-0944
PO BOX 945, SALEMBURG, NC 28385-0945
PO BOX 946, SALEMBURG, NC 28385-0946
PO BOX 947, SALEMBURG, NC 28385-0947
PO BOX 948, SALEMBURG, NC 28385-0948
PO BOX 949, SALEMBURG, NC 28385-0949
PO BOX 950, SALEMBURG, NC 28385-0950
PO BOX 951, SALEMBURG, NC 28385-0951
PO BOX 952, SALEMBURG, NC 28385-0952
PO BOX 953, SALEMBURG, NC 28385-0953
PO BOX 954, SALEMBURG, NC 28385-0954
PO BOX 955, SALEMBURG, NC 28385-0955
PO BOX 956, SALEMBURG, NC 28385-0956
PO BOX 957, SALEMBURG, NC 28385-0957
PO BOX 958, SALEMBURG, NC 28385-0958
PO BOX 959, SALEMBURG, NC 28385-0959
PO BOX 960, SALEMBURG, NC 28385-0960
PO BOX 961, SALEMBURG, NC 28385-0961
PO BOX 962, SALEMBURG, NC 28385-0962
PO BOX 963, SALEMBURG, NC 28385-0963
PO BOX 964, SALEMBURG, NC 28385-0964
PO BOX 965, SALEMBURG, NC 28385-0965
PO BOX 966, SALEMBURG, NC 28385-0966
PO BOX 967, SALEMBURG, NC 28385-0967
PO BOX 968, SALEMBURG, NC 28385-0968
PO BOX 969, SALEMBURG, NC 28385-0969
PO BOX 970, SALEMBURG, NC 28385-0970
PO BOX 971, SALEMBURG, NC 28385-0971
PO BOX 972, SALEMBURG, NC 28385-0972
PO BOX 973, SALEMBURG, NC 28385-0973
PO BOX 974, SALEMBURG, NC 28385-0974
PO BOX 975, SALEMBURG, NC 28385-0975
PO BOX 976, SALEMBURG, NC 28385-0976
PO BOX 977, SALEMBURG, NC 28385-0977
PO BOX 978, SALEMBURG, NC 28385-0978
PO BOX 979, SALEMBURG, NC 28385-0979
PO BOX 980, SALEMBURG, NC 28385-0980
PO BOX 981, SALEMBURG, NC 28385-0981
PO BOX 982, SALEMBURG, NC 28385-0982
PO BOX 983, SALEMBURG, NC 28385-0983
PO BOX 984, SALEMBURG, NC 28385-0984
PO BOX 985, SALEMBURG, NC 28385-0985
PO BOX 986, SALEMBURG, NC 28385-0986
PO BOX 987, SALEMBURG, NC 28385-0987
PO BOX 988, SALEMBURG, NC 28385-0988
PO BOX 989, SALEMBURG, NC 28385-0989
PO BOX 990, SALEMBURG, NC 28385-0990
PO BOX 991, SALEMBURG, NC 28385-0991
PO BOX 992, SALEMBURG, NC 28385-0992
PO BOX 993, SALEMBURG, NC 28385-0993
PO BOX 994, SALEMBURG, NC 28385-0994
PO BOX 995, SALEMBURG, NC 28385-0995
PO BOX 996, SALEMBURG, NC 28385-0996
PO BOX 997, SALEMBURG, NC 28385-0997
PO BOX 998, SALEMBURG, NC 28385-0998
PO BOX 999, SALEMBURG, NC 28385-0999
PO BOX 1000, SALEMBURG, NC 28385-1000
PO BOX 1001, SALEMBURG, NC 28385-1001
PO BOX 1002, SALEMBURG, NC 28385-1002
PO BOX 1003, SALEMBURG, NC 28385-1003
PO BOX 1004, SALEMBURG, NC 28385-1004
PO BOX 1005, SALEMBURG, NC 28385-1005
PO BOX 1006, SALEMBURG, NC 28385-1006
PO BOX 1007, SALEMBURG, NC 28385-1007
PO BOX 1008, SALEMBURG, NC 28385-1008
PO BOX 1009, SALEMBURG, NC 28385-1009
PO BOX 1010, SALEMBURG, NC 28385-1010
PO BOX 1011, SALEMBURG, NC 28385-1011
PO BOX 1012, SALEMBURG, NC 28385-1012
PO BOX 1013, SALEMBURG, NC 28385-1013
PO BOX 1014, SALEMBURG, NC 28385-1014
PO BOX 1015, SALEMBURG, NC 28385-1015
PO BOX 1016, SALEMBURG, NC 28385-1016
PO BOX 1017, SALEMBURG, NC 28385-1017
PO BOX 1018, SALEMBURG, NC 28385-1018
PO BOX 1019, SALEMBURG, NC 28385-1019
PO BOX 1020, SALEMBURG, NC 28385-1020
PO BOX 1021, SALEMBURG, NC 28385-1021
PO BOX 1022, SALEMBURG, NC 28385-1022
PO BOX 1023, SALEMBURG, NC 28385-1023
PO BOX 1024, SALEMBURG, NC 28385-1024
PO BOX 1025, SALEMBURG, NC 28385-1025
PO BOX 1026, SALEMBURG, NC 28385-1026
PO BOX 1027, SALEMBURG, NC 28385-1027
PO BOX 1028, SALEMBURG, NC 28385-1028
PO BOX 1029, SALEMBURG, NC 28385-1029
PO BOX 1030, SALEMBURG, NC 28385-1030
PO BOX 1031, SALEMBURG, NC 28385-1031
PO BOX 1032, SALEMBURG, NC 28385-1032
PO BOX 1033, SALEMBURG, NC 28385-1033
PO BOX 1034, SALEMBURG, NC 28385-1034
PO BOX 1035, SALEMBURG, NC 28385-1035
PO BOX 1036, SALEMBURG, NC 28385-1036
PO BOX 1037, SALEMBURG, NC 28385-1037
PO BOX 1038, SALEMBURG, NC 28385-1038
PO BOX 1039, SALEMBURG, NC 28385-1039
PO BOX 1040, SALEMBURG, NC 28385-1040
PO BOX 1041, SALEMBURG, NC 28385-1041
PO BOX 1042, SALEMBURG, NC 28385-1042
PO BOX 1043, SALEMBURG, NC 28385-1043
PO BOX 1044, SALEMBURG, NC 28385-1044
PO BOX 1045, SALEMBURG, NC 28385-1045
PO BOX 1046, SALEMBURG, NC 28385-1046
PO BOX 1047, SALEMBURG, NC 28385-1047
PO BOX 1048, SALEMBURG, NC 28385-1048
PO BOX 1049, SALEMBURG, NC 28385-1049
PO BOX 1050, SALEMBURG, NC 28385-1050
PO BOX 1051, SALEMBURG, NC 28385-1051
PO BOX 1052, SALEMBURG, NC 28385-1052
PO BOX 1053, SALEMBURG, NC 28385-1053
PO BOX 1054, SALEMBURG, NC 28385-1054
PO BOX 1055, SALEMBURG, NC 28385-1055
PO BOX 1056, SALEMBURG, NC 28385-1056
PO BOX 1057, SALEMBURG, NC 28385-1057
PO BOX 1058, SALEMBURG, NC 28385-1058
PO BOX 1059, SALEMBURG, NC 28385-1059
PO BOX 1060, SALEMBURG, NC 28385-1060
PO BOX 1061, SALEMBURG, NC 28385-1061
PO BOX 1062, SALEMBURG, NC 28385-1062
PO BOX 1063, SALEMBURG, NC 28385-1063
PO BOX 1064, SALEMBURG, NC 28385-1064
PO BOX 1065, SALEMBURG, NC 28385-1065
PO BOX 1066, SALEMBURG, NC 28385-1066
PO BOX 1067, SALEMBURG, NC 28385-1067
PO BOX 1068, SALEMBURG, NC 28385-1068
PO BOX 1069, SALEMBURG, NC 28385-1069
PO BOX 1070, SALEMBURG, NC 28385-1070
PO BOX 1071, SALEMBURG, NC 28385-1071
PO BOX 1072, SALEMBURG, NC 28385-1072
PO BOX 1073, SALEMBURG, NC 28385-1073
PO BOX 1074, SALEMBURG, NC 28385-1074
PO BOX 1075, SALEMBURG, NC 28385-1075
PO BOX 1076, SALEMBURG, NC 28385-1076
PO BOX 1077, SALEMBURG, NC 28385-1077
PO BOX 1078, SALEMBURG, NC 28385-1078
PO BOX 1079, SALEMBURG, NC 28385-1079
PO BOX 1080, SALEMBURG, NC 28385-1080
PO BOX 1081, SALEMBURG, NC 28385-1081
PO BOX 1082, SALEMBURG, NC 28385-1082
PO BOX 1083, SALEMBURG, NC 28385-1083
PO BOX 1084, SALEMBURG, NC 28385-1084
PO BOX 1085, SALEMBURG, NC 28385-1085
PO BOX 1086, SALEMBURG, NC 28385-1086
PO BOX 1087, SALEMBURG, NC 28385-1087
PO BOX 1088, SALEMBURG, NC 28385-1088
PO BOX 1089, SALEMBURG, NC 28385-1089
PO BOX 1090, SALEMBURG, NC 28385-1090
PO BOX 1091, SALEMBURG, NC 28385-1091
PO BOX 1092, SALEMBURG, NC 28385-1092
PO BOX 1093, SALEMBURG, NC 28385-1093
PO BOX 1094, SALEMBURG, NC 28385-1094
PO BOX 1095, SALEMBURG, NC 28385-1095
PO BOX 1096, SALEMBURG, NC 28385-1096
PO BOX 1097, SALEMBURG, NC 28385-1097
PO BOX 1098, SALEMBURG, NC 28385-1098
PO BOX 1099, SALEMBURG, NC 28385-1099
PO BOX 1100, SALEMBURG, NC 28385-1100
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