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 9001, CHANDLER HEIGHTS, AZ 85127-9001
PO BOX 9002, CHANDLER HEIGHTS, AZ 85127-9002
PO BOX 9003, CHANDLER HEIGHTS, AZ 85127-9003
PO BOX 9004, CHANDLER HEIGHTS, AZ 85127-9004
PO BOX 9005, CHANDLER HEIGHTS, AZ 85127-9005
PO BOX 9006, CHANDLER HEIGHTS, AZ 85127-9006
PO BOX 9007, CHANDLER HEIGHTS, AZ 85127-9007
PO BOX 9008, CHANDLER HEIGHTS, AZ 85127-9008
PO BOX 9009, CHANDLER HEIGHTS, AZ 85127-9009
PO BOX 9010, CHANDLER HEIGHTS, AZ 85127-9010
PO BOX 9011, CHANDLER HEIGHTS, AZ 85127-9011
PO BOX 9012, CHANDLER HEIGHTS, AZ 85127-9012
PO BOX 9013, CHANDLER HEIGHTS, AZ 85127-9013
PO BOX 9014, CHANDLER HEIGHTS, AZ 85127-9014
PO BOX 9015, CHANDLER HEIGHTS, AZ 85127-9015
PO BOX 9016, CHANDLER HEIGHTS, AZ 85127-9016
PO BOX 9017, CHANDLER HEIGHTS, AZ 85127-9017
PO BOX 9018, CHANDLER HEIGHTS, AZ 85127-9018
PO BOX 9019, CHANDLER HEIGHTS, AZ 85127-9019
PO BOX 9020, CHANDLER HEIGHTS, AZ 85127-9020
PO BOX 9021, CHANDLER HEIGHTS, AZ 85127-9021
PO BOX 9022, CHANDLER HEIGHTS, AZ 85127-9022
PO BOX 9023, CHANDLER HEIGHTS, AZ 85127-9023
PO BOX 9024, CHANDLER HEIGHTS, AZ 85127-9024
PO BOX 9025, CHANDLER HEIGHTS, AZ 85127-9025
PO BOX 9026, CHANDLER HEIGHTS, AZ 85127-9026
PO BOX 9027, CHANDLER HEIGHTS, AZ 85127-9027
PO BOX 9028, CHANDLER HEIGHTS, AZ 85127-9028
PO BOX 9029, CHANDLER HEIGHTS, AZ 85127-9029
PO BOX 9030, CHANDLER HEIGHTS, AZ 85127-9030
PO BOX 9031, CHANDLER HEIGHTS, AZ 85127-9031
PO BOX 9032, CHANDLER HEIGHTS, AZ 85127-9032
PO BOX 9033, CHANDLER HEIGHTS, AZ 85127-9033
PO BOX 9034, CHANDLER HEIGHTS, AZ 85127-9034
PO BOX 9035, CHANDLER HEIGHTS, AZ 85127-9035
PO BOX 9036, CHANDLER HEIGHTS, AZ 85127-9036
PO BOX 9037, CHANDLER HEIGHTS, AZ 85127-9037
PO BOX 9038, CHANDLER HEIGHTS, AZ 85127-9038
PO BOX 9039, CHANDLER HEIGHTS, AZ 85127-9039
PO BOX 9040, CHANDLER HEIGHTS, AZ 85127-9040
PO BOX 9041, CHANDLER HEIGHTS, AZ 85127-9041
PO BOX 9042, CHANDLER HEIGHTS, AZ 85127-9042
PO BOX 9043, CHANDLER HEIGHTS, AZ 85127-9043
PO BOX 9044, CHANDLER HEIGHTS, AZ 85127-9044
PO BOX 9045, CHANDLER HEIGHTS, AZ 85127-9045
PO BOX 9046, CHANDLER HEIGHTS, AZ 85127-9046
PO BOX 9047, CHANDLER HEIGHTS, AZ 85127-9047
PO BOX 9048, CHANDLER HEIGHTS, AZ 85127-9048
PO BOX 9049, CHANDLER HEIGHTS, AZ 85127-9049
PO BOX 9050, CHANDLER HEIGHTS, AZ 85127-9050
PO BOX 9051, CHANDLER HEIGHTS, AZ 85127-9051
PO BOX 9052, CHANDLER HEIGHTS, AZ 85127-9052
PO BOX 9053, CHANDLER HEIGHTS, AZ 85127-9053
PO BOX 9054, CHANDLER HEIGHTS, AZ 85127-9054
PO BOX 9055, CHANDLER HEIGHTS, AZ 85127-9055
PO BOX 9056, CHANDLER HEIGHTS, AZ 85127-9056
PO BOX 9057, CHANDLER HEIGHTS, AZ 85127-9057
PO BOX 9058, CHANDLER HEIGHTS, AZ 85127-9058
PO BOX 9059, CHANDLER HEIGHTS, AZ 85127-9059
PO BOX 9060, CHANDLER HEIGHTS, AZ 85127-9060
PO BOX 9061, CHANDLER HEIGHTS, AZ 85127-9061
PO BOX 9062, CHANDLER HEIGHTS, AZ 85127-9062
PO BOX 9063, CHANDLER HEIGHTS, AZ 85127-9063
PO BOX 9064, CHANDLER HEIGHTS, AZ 85127-9064
PO BOX 9065, CHANDLER HEIGHTS, AZ 85127-9065
PO BOX 9066, CHANDLER HEIGHTS, AZ 85127-9066
PO BOX 9067, CHANDLER HEIGHTS, AZ 85127-9067
PO BOX 9068, CHANDLER HEIGHTS, AZ 85127-9068
PO BOX 9069, CHANDLER HEIGHTS, AZ 85127-9069
PO BOX 9070, CHANDLER HEIGHTS, AZ 85127-9070
PO BOX 9071, CHANDLER HEIGHTS, AZ 85127-9071
PO BOX 9072, CHANDLER HEIGHTS, AZ 85127-9072
PO BOX 9073, CHANDLER HEIGHTS, AZ 85127-9073
PO BOX 9074, CHANDLER HEIGHTS, AZ 85127-9074
PO BOX 9075, CHANDLER HEIGHTS, AZ 85127-9075
PO BOX 9076, CHANDLER HEIGHTS, AZ 85127-9076
PO BOX 9077, CHANDLER HEIGHTS, AZ 85127-9077
PO BOX 9078, CHANDLER HEIGHTS, AZ 85127-9078
PO BOX 9079, CHANDLER HEIGHTS, AZ 85127-9079
PO BOX 9080, CHANDLER HEIGHTS, AZ 85127-9080
PO BOX 9081, CHANDLER HEIGHTS, AZ 85127-9081
PO BOX 9082, CHANDLER HEIGHTS, AZ 85127-9082
PO BOX 9083, CHANDLER HEIGHTS, AZ 85127-9083
PO BOX 9084, CHANDLER HEIGHTS, AZ 85127-9084
PO BOX 9085, CHANDLER HEIGHTS, AZ 85127-9085
PO BOX 9086, CHANDLER HEIGHTS, AZ 85127-9086
PO BOX 9087, CHANDLER HEIGHTS, AZ 85127-9087
PO BOX 9088, CHANDLER HEIGHTS, AZ 85127-9088
PO BOX 9089, CHANDLER HEIGHTS, AZ 85127-9089
PO BOX 9090, CHANDLER HEIGHTS, AZ 85127-9090
PO BOX 9091, CHANDLER HEIGHTS, AZ 85127-9091
PO BOX 9092, CHANDLER HEIGHTS, AZ 85127-9092
PO BOX 9093, CHANDLER HEIGHTS, AZ 85127-9093
PO BOX 9094, CHANDLER HEIGHTS, AZ 85127-9094
PO BOX 9095, CHANDLER HEIGHTS, AZ 85127-9095
PO BOX 9096, CHANDLER HEIGHTS, AZ 85127-9096
PO BOX 9097, CHANDLER HEIGHTS, AZ 85127-9097
PO BOX 9098, CHANDLER HEIGHTS, AZ 85127-9098
PO BOX 9099, CHANDLER HEIGHTS, AZ 85127-9099
PO BOX 9100, CHANDLER HEIGHTS, AZ 85127-9100
PO BOX 9101, CHANDLER HEIGHTS, AZ 85127-9101
PO BOX 9102, CHANDLER HEIGHTS, AZ 85127-9102
PO BOX 9103, CHANDLER HEIGHTS, AZ 85127-9103
PO BOX 9104, CHANDLER HEIGHTS, AZ 85127-9104
PO BOX 9105, CHANDLER HEIGHTS, AZ 85127-9105
PO BOX 9106, CHANDLER HEIGHTS, AZ 85127-9106
PO BOX 9107, CHANDLER HEIGHTS, AZ 85127-9107
PO BOX 9108, CHANDLER HEIGHTS, AZ 85127-9108
PO BOX 9109, CHANDLER HEIGHTS, AZ 85127-9109
PO BOX 9110, CHANDLER HEIGHTS, AZ 85127-9110
PO BOX 9111, CHANDLER HEIGHTS, AZ 85127-9111
PO BOX 9112, CHANDLER HEIGHTS, AZ 85127-9112
PO BOX 9113, CHANDLER HEIGHTS, AZ 85127-9113
PO BOX 9114, CHANDLER HEIGHTS, AZ 85127-9114
PO BOX 9115, CHANDLER HEIGHTS, AZ 85127-9115
PO BOX 9116, CHANDLER HEIGHTS, AZ 85127-9116
PO BOX 9117, CHANDLER HEIGHTS, AZ 85127-9117
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