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 7001, SAINT PETERSBURG, FL 33734-7001
PO BOX 7002, SAINT PETERSBURG, FL 33734-7002
PO BOX 7003, SAINT PETERSBURG, FL 33734-7003
PO BOX 7004, SAINT PETERSBURG, FL 33734-7004
PO BOX 7005, SAINT PETERSBURG, FL 33734-7005
PO BOX 7006, SAINT PETERSBURG, FL 33734-7006
PO BOX 7007, SAINT PETERSBURG, FL 33734-7007
PO BOX 7008, SAINT PETERSBURG, FL 33734-7008
PO BOX 7009, SAINT PETERSBURG, FL 33734-7009
PO BOX 7010, SAINT PETERSBURG, FL 33734-7010
PO BOX 7011, SAINT PETERSBURG, FL 33734-7011
PO BOX 7012, SAINT PETERSBURG, FL 33734-7012
PO BOX 7013, SAINT PETERSBURG, FL 33734-7013
PO BOX 7014, SAINT PETERSBURG, FL 33734-7014
PO BOX 7015, SAINT PETERSBURG, FL 33734-7015
PO BOX 7016, SAINT PETERSBURG, FL 33734-7016
PO BOX 7017, SAINT PETERSBURG, FL 33734-7017
PO BOX 7018, SAINT PETERSBURG, FL 33734-7018
PO BOX 7019, SAINT PETERSBURG, FL 33734-7019
PO BOX 7020, SAINT PETERSBURG, FL 33734-7020
PO BOX 7021, SAINT PETERSBURG, FL 33734-7021
PO BOX 7022, SAINT PETERSBURG, FL 33734-7022
PO BOX 7023, SAINT PETERSBURG, FL 33734-7023
PO BOX 7024, SAINT PETERSBURG, FL 33734-7024
PO BOX 7025, SAINT PETERSBURG, FL 33734-7025
PO BOX 7026, SAINT PETERSBURG, FL 33734-7026
PO BOX 7027, SAINT PETERSBURG, FL 33734-7027
PO BOX 7028, SAINT PETERSBURG, FL 33734-7028
PO BOX 7029, SAINT PETERSBURG, FL 33734-7029
PO BOX 7030, SAINT PETERSBURG, FL 33734-7030
PO BOX 7031, SAINT PETERSBURG, FL 33734-7031
PO BOX 7032, SAINT PETERSBURG, FL 33734-7032
PO BOX 7033, SAINT PETERSBURG, FL 33734-7033
PO BOX 7034, SAINT PETERSBURG, FL 33734-7034
PO BOX 7035, SAINT PETERSBURG, FL 33734-7035
PO BOX 7036, SAINT PETERSBURG, FL 33734-7036
PO BOX 7037, SAINT PETERSBURG, FL 33734-7037
PO BOX 7038, SAINT PETERSBURG, FL 33734-7038
PO BOX 7039, SAINT PETERSBURG, FL 33734-7039
PO BOX 7040, SAINT PETERSBURG, FL 33734-7040
PO BOX 7041, SAINT PETERSBURG, FL 33734-7041
PO BOX 7042, SAINT PETERSBURG, FL 33734-7042
PO BOX 7043, SAINT PETERSBURG, FL 33734-7043
PO BOX 7044, SAINT PETERSBURG, FL 33734-7044
PO BOX 7045, SAINT PETERSBURG, FL 33734-7045
PO BOX 7046, SAINT PETERSBURG, FL 33734-7046
PO BOX 7047, SAINT PETERSBURG, FL 33734-7047
PO BOX 7048, SAINT PETERSBURG, FL 33734-7048
PO BOX 7049, SAINT PETERSBURG, FL 33734-7049
PO BOX 7050, SAINT PETERSBURG, FL 33734-7050
PO BOX 7051, SAINT PETERSBURG, FL 33734-7051
PO BOX 7052, SAINT PETERSBURG, FL 33734-7052
PO BOX 7053, SAINT PETERSBURG, FL 33734-7053
PO BOX 7054, SAINT PETERSBURG, FL 33734-7054
PO BOX 7055, SAINT PETERSBURG, FL 33734-7055
PO BOX 7056, SAINT PETERSBURG, FL 33734-7056
PO BOX 7057, SAINT PETERSBURG, FL 33734-7057
PO BOX 7058, SAINT PETERSBURG, FL 33734-7058
PO BOX 7059, SAINT PETERSBURG, FL 33734-7059
PO BOX 7060, SAINT PETERSBURG, FL 33734-7060
PO BOX 7061, SAINT PETERSBURG, FL 33734-7061
PO BOX 7062, SAINT PETERSBURG, FL 33734-7062
PO BOX 7063, SAINT PETERSBURG, FL 33734-7063
PO BOX 7064, SAINT PETERSBURG, FL 33734-7064
PO BOX 7065, SAINT PETERSBURG, FL 33734-7065
PO BOX 7066, SAINT PETERSBURG, FL 33734-7066
PO BOX 7067, SAINT PETERSBURG, FL 33734-7067
PO BOX 7068, SAINT PETERSBURG, FL 33734-7068
PO BOX 7069, SAINT PETERSBURG, FL 33734-7069
PO BOX 7070, SAINT PETERSBURG, FL 33734-7070
PO BOX 7071, SAINT PETERSBURG, FL 33734-7071
PO BOX 7072, SAINT PETERSBURG, FL 33734-7072
PO BOX 7073, SAINT PETERSBURG, FL 33734-7073
PO BOX 7074, SAINT PETERSBURG, FL 33734-7074
PO BOX 7075, SAINT PETERSBURG, FL 33734-7075
PO BOX 7076, SAINT PETERSBURG, FL 33734-7076
PO BOX 7077, SAINT PETERSBURG, FL 33734-7077
PO BOX 7078, SAINT PETERSBURG, FL 33734-7078
PO BOX 7079, SAINT PETERSBURG, FL 33734-7079
PO BOX 7080, SAINT PETERSBURG, FL 33734-7080
PO BOX 7081, SAINT PETERSBURG, FL 33734-7081
PO BOX 7082, SAINT PETERSBURG, FL 33734-7082
PO BOX 7083, SAINT PETERSBURG, FL 33734-7083
PO BOX 7084, SAINT PETERSBURG, FL 33734-7084
PO BOX 7085, SAINT PETERSBURG, FL 33734-7085
PO BOX 7086, SAINT PETERSBURG, FL 33734-7086
PO BOX 7087, SAINT PETERSBURG, FL 33734-7087
PO BOX 7088, SAINT PETERSBURG, FL 33734-7088
PO BOX 7089, SAINT PETERSBURG, FL 33734-7089
PO BOX 7090, SAINT PETERSBURG, FL 33734-7090
PO BOX 7091, SAINT PETERSBURG, FL 33734-7091
PO BOX 7092, SAINT PETERSBURG, FL 33734-7092
PO BOX 7093, SAINT PETERSBURG, FL 33734-7093
PO BOX 7094, SAINT PETERSBURG, FL 33734-7094
PO BOX 7095, SAINT PETERSBURG, FL 33734-7095
PO BOX 7096, SAINT PETERSBURG, FL 33734-7096
PO BOX 7097, SAINT PETERSBURG, FL 33734-7097
PO BOX 7098, SAINT PETERSBURG, FL 33734-7098
PO BOX 7099, SAINT PETERSBURG, FL 33734-7099
PO BOX 7100, SAINT PETERSBURG, FL 33734-7100
PO BOX 7101, SAINT PETERSBURG, FL 33734-7101
PO BOX 7102, SAINT PETERSBURG, FL 33734-7102
PO BOX 7103, SAINT PETERSBURG, FL 33734-7103
PO BOX 7104, SAINT PETERSBURG, FL 33734-7104
PO BOX 7105, SAINT PETERSBURG, FL 33734-7105
PO BOX 7106, SAINT PETERSBURG, FL 33734-7106
PO BOX 7107, SAINT PETERSBURG, FL 33734-7107
PO BOX 7108, SAINT PETERSBURG, FL 33734-7108
PO BOX 7109, SAINT PETERSBURG, FL 33734-7109
PO BOX 7110, SAINT PETERSBURG, FL 33734-7110
PO BOX 7111, SAINT PETERSBURG, FL 33734-7111
PO BOX 7112, SAINT PETERSBURG, FL 33734-7112
PO BOX 7113, SAINT PETERSBURG, FL 33734-7113
PO BOX 7114, SAINT PETERSBURG, FL 33734-7114
PO BOX 7115, SAINT PETERSBURG, FL 33734-7115
PO BOX 7116, SAINT PETERSBURG, FL 33734-7116
PO BOX 7117, SAINT PETERSBURG, FL 33734-7117
PO BOX 7118, SAINT PETERSBURG, FL 33734-7118
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