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 1001, FREDERICKSBURG, VA 22402-1001
PO BOX 1002, FREDERICKSBURG, VA 22402-1002
PO BOX 1003, FREDERICKSBURG, VA 22402-1003
PO BOX 1004, FREDERICKSBURG, VA 22402-1004
PO BOX 1005, FREDERICKSBURG, VA 22402-1005
PO BOX 1006, FREDERICKSBURG, VA 22402-1006
PO BOX 1007, FREDERICKSBURG, VA 22402-1007
PO BOX 1008, FREDERICKSBURG, VA 22402-1008
PO BOX 1009, FREDERICKSBURG, VA 22402-1009
PO BOX 1010, FREDERICKSBURG, VA 22402-1010
PO BOX 1011, FREDERICKSBURG, VA 22402-1011
PO BOX 1012, FREDERICKSBURG, VA 22402-1012
PO BOX 1013, FREDERICKSBURG, VA 22402-1013
PO BOX 1014, FREDERICKSBURG, VA 22402-1014
PO BOX 1015, FREDERICKSBURG, VA 22402-1015
PO BOX 1016, FREDERICKSBURG, VA 22402-1016
PO BOX 1017, FREDERICKSBURG, VA 22402-1017
PO BOX 1018, FREDERICKSBURG, VA 22402-1018
PO BOX 1019, FREDERICKSBURG, VA 22402-1019
PO BOX 1020, FREDERICKSBURG, VA 22402-1020
PO BOX 1021, FREDERICKSBURG, VA 22402-1021
PO BOX 1022, FREDERICKSBURG, VA 22402-1022
PO BOX 1023, FREDERICKSBURG, VA 22402-1023
PO BOX 1024, FREDERICKSBURG, VA 22402-1024
PO BOX 1025, FREDERICKSBURG, VA 22402-1025
PO BOX 1026, FREDERICKSBURG, VA 22402-1026
PO BOX 1027, FREDERICKSBURG, VA 22402-1027
PO BOX 1028, FREDERICKSBURG, VA 22402-1028
PO BOX 1029, FREDERICKSBURG, VA 22402-1029
PO BOX 1030, FREDERICKSBURG, VA 22402-1030
PO BOX 1031, FREDERICKSBURG, VA 22402-1031
PO BOX 1032, FREDERICKSBURG, VA 22402-1032
PO BOX 1033, FREDERICKSBURG, VA 22402-1033
PO BOX 1034, FREDERICKSBURG, VA 22402-1034
PO BOX 1035, FREDERICKSBURG, VA 22402-1035
PO BOX 1036, FREDERICKSBURG, VA 22402-1036
PO BOX 1037, FREDERICKSBURG, VA 22402-1037
PO BOX 1038, FREDERICKSBURG, VA 22402-1038
PO BOX 1039, FREDERICKSBURG, VA 22402-1039
PO BOX 1040, FREDERICKSBURG, VA 22402-1040
PO BOX 1041, FREDERICKSBURG, VA 22402-1041
PO BOX 1042, FREDERICKSBURG, VA 22402-1042
PO BOX 1043, FREDERICKSBURG, VA 22402-1043
PO BOX 1044, FREDERICKSBURG, VA 22402-1044
PO BOX 1045, FREDERICKSBURG, VA 22402-1045
PO BOX 1046, FREDERICKSBURG, VA 22402-1046
PO BOX 1047, FREDERICKSBURG, VA 22402-1047
PO BOX 1048, FREDERICKSBURG, VA 22402-1048
PO BOX 1049, FREDERICKSBURG, VA 22402-1049
PO BOX 1050, FREDERICKSBURG, VA 22402-1050
PO BOX 1051, FREDERICKSBURG, VA 22402-1051
PO BOX 1052, FREDERICKSBURG, VA 22402-1052
PO BOX 1053, FREDERICKSBURG, VA 22402-1053
PO BOX 1054, FREDERICKSBURG, VA 22402-1054
PO BOX 1055, FREDERICKSBURG, VA 22402-1055
PO BOX 1056, FREDERICKSBURG, VA 22402-1056
PO BOX 1057, FREDERICKSBURG, VA 22402-1057
PO BOX 1058, FREDERICKSBURG, VA 22402-1058
PO BOX 1059, FREDERICKSBURG, VA 22402-1059
PO BOX 1060, FREDERICKSBURG, VA 22402-1060
PO BOX 1061, FREDERICKSBURG, VA 22402-1061
PO BOX 1062, FREDERICKSBURG, VA 22402-1062
PO BOX 1063, FREDERICKSBURG, VA 22402-1063
PO BOX 1064, FREDERICKSBURG, VA 22402-1064
PO BOX 1065, FREDERICKSBURG, VA 22402-1065
PO BOX 1066, FREDERICKSBURG, VA 22402-1066
PO BOX 1067, FREDERICKSBURG, VA 22402-1067
PO BOX 1068, FREDERICKSBURG, VA 22402-1068
PO BOX 1069, FREDERICKSBURG, VA 22402-1069
PO BOX 1070, FREDERICKSBURG, VA 22402-1070
PO BOX 1071, FREDERICKSBURG, VA 22402-1071
PO BOX 1072, FREDERICKSBURG, VA 22402-1072
PO BOX 1073, FREDERICKSBURG, VA 22402-1073
PO BOX 1074, FREDERICKSBURG, VA 22402-1074
PO BOX 1075, FREDERICKSBURG, VA 22402-1075
PO BOX 1076, FREDERICKSBURG, VA 22402-1076
PO BOX 1077, FREDERICKSBURG, VA 22402-1077
PO BOX 1078, FREDERICKSBURG, VA 22402-1078
PO BOX 1079, FREDERICKSBURG, VA 22402-1079
PO BOX 1080, FREDERICKSBURG, VA 22402-1080
PO BOX 1081, FREDERICKSBURG, VA 22402-1081
PO BOX 1082, FREDERICKSBURG, VA 22402-1082
PO BOX 1083, FREDERICKSBURG, VA 22402-1083
PO BOX 1084, FREDERICKSBURG, VA 22402-1084
PO BOX 1085, FREDERICKSBURG, VA 22402-1085
PO BOX 1086, FREDERICKSBURG, VA 22402-1086
PO BOX 1087, FREDERICKSBURG, VA 22402-1087
PO BOX 1088, FREDERICKSBURG, VA 22402-1088
PO BOX 1089, FREDERICKSBURG, VA 22402-1089
PO BOX 1090, FREDERICKSBURG, VA 22402-1090
PO BOX 1091, FREDERICKSBURG, VA 22402-1091
PO BOX 1092, FREDERICKSBURG, VA 22402-1092
PO BOX 1093, FREDERICKSBURG, VA 22402-1093
PO BOX 1094, FREDERICKSBURG, VA 22402-1094
PO BOX 1095, FREDERICKSBURG, VA 22402-1095
PO BOX 1096, FREDERICKSBURG, VA 22402-1096
PO BOX 1097, FREDERICKSBURG, VA 22402-1097
PO BOX 1098, FREDERICKSBURG, VA 22402-1098
PO BOX 1099, FREDERICKSBURG, VA 22402-1099
PO BOX 1100, FREDERICKSBURG, VA 22402-1100
PO BOX 1101, FREDERICKSBURG, VA 22402-1101
PO BOX 1102, FREDERICKSBURG, VA 22402-1102
PO BOX 1103, FREDERICKSBURG, VA 22402-1103
PO BOX 1104, FREDERICKSBURG, VA 22402-1104
PO BOX 1105, FREDERICKSBURG, VA 22402-1105
PO BOX 1106, FREDERICKSBURG, VA 22402-1106
PO BOX 1107, FREDERICKSBURG, VA 22402-1107
PO BOX 1108, FREDERICKSBURG, VA 22402-1108
PO BOX 1109, FREDERICKSBURG, VA 22402-1109
PO BOX 1110, FREDERICKSBURG, VA 22402-1110
PO BOX 1111, FREDERICKSBURG, VA 22402-1111
PO BOX 1112, FREDERICKSBURG, VA 22402-1112
PO BOX 1113, FREDERICKSBURG, VA 22402-1113
PO BOX 1114, FREDERICKSBURG, VA 22402-1114
PO BOX 1115, FREDERICKSBURG, VA 22402-1115
PO BOX 1116, FREDERICKSBURG, VA 22402-1116
PO BOX 1117, FREDERICKSBURG, VA 22402-1117
PO BOX 1118, FREDERICKSBURG, VA 22402-1118
PO BOX 1119, FREDERICKSBURG, VA 22402-1119
PO BOX 1120, FREDERICKSBURG, VA 22402-1120
PO BOX 1121, FREDERICKSBURG, VA 22402-1121
PO BOX 1122, FREDERICKSBURG, VA 22402-1122
PO BOX 1123, FREDERICKSBURG, VA 22402-1123
PO BOX 1124, FREDERICKSBURG, VA 22402-1124
PO BOX 1125, FREDERICKSBURG, VA 22402-1125
PO BOX 1126, FREDERICKSBURG, VA 22402-1126
PO BOX 1127, FREDERICKSBURG, VA 22402-1127
PO BOX 1128, FREDERICKSBURG, VA 22402-1128
PO BOX 1129, FREDERICKSBURG, VA 22402-1129
PO BOX 1130, FREDERICKSBURG, VA 22402-1130
PO BOX 1131, FREDERICKSBURG, VA 22402-1131
PO BOX 1132, FREDERICKSBURG, VA 22402-1132
PO BOX 1133, FREDERICKSBURG, VA 22402-1133
PO BOX 1134, FREDERICKSBURG, VA 22402-1134
PO BOX 1135, FREDERICKSBURG, VA 22402-1135
PO BOX 1136, FREDERICKSBURG, VA 22402-1136
PO BOX 1137, FREDERICKSBURG, VA 22402-1137
PO BOX 1138, FREDERICKSBURG, VA 22402-1138
PO BOX 1139, FREDERICKSBURG, VA 22402-1139
PO BOX 1140, FREDERICKSBURG, VA 22402-1140
PO BOX 1141, FREDERICKSBURG, VA 22402-1141
PO BOX 1142, FREDERICKSBURG, VA 22402-1142
PO BOX 1143, FREDERICKSBURG, VA 22402-1143
PO BOX 1144, FREDERICKSBURG, VA 22402-1144
PO BOX 1145, FREDERICKSBURG, VA 22402-1145
PO BOX 1146, FREDERICKSBURG, VA 22402-1146
PO BOX 1147, FREDERICKSBURG, VA 22402-1147
PO BOX 1148, FREDERICKSBURG, VA 22402-1148
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