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 534001, PITTSBURGH, PA 15253-4001
PO BOX 534002, PITTSBURGH, PA 15253-4002
PO BOX 534003, PITTSBURGH, PA 15253-4003
PO BOX 534004, PITTSBURGH, PA 15253-4004
PO BOX 534005, PITTSBURGH, PA 15253-4005
PO BOX 534006, PITTSBURGH, PA 15253-4006
PO BOX 534007, PITTSBURGH, PA 15253-4007
PO BOX 534008, PITTSBURGH, PA 15253-4008
PO BOX 534009, PITTSBURGH, PA 15253-4009
PO BOX 534010, PITTSBURGH, PA 15253-4010
PO BOX 534011, PITTSBURGH, PA 15253-4011
PO BOX 534012, PITTSBURGH, PA 15253-4012
PO BOX 534013, PITTSBURGH, PA 15253-4013
PO BOX 534014, PITTSBURGH, PA 15253-4014
PO BOX 534015, PITTSBURGH, PA 15253-4015
PO BOX 534016, PITTSBURGH, PA 15253-4016
PO BOX 534017, PITTSBURGH, PA 15253-4017
PO BOX 534018, PITTSBURGH, PA 15253-4018
PO BOX 534019, PITTSBURGH, PA 15253-4019
PO BOX 534020, PITTSBURGH, PA 15253-4020
PO BOX 534021, PITTSBURGH, PA 15253-4021
PO BOX 534022, PITTSBURGH, PA 15253-4022
PO BOX 534023, PITTSBURGH, PA 15253-4023
PO BOX 534024, PITTSBURGH, PA 15253-4024
PO BOX 534025, PITTSBURGH, PA 15253-4025
PO BOX 534026, PITTSBURGH, PA 15253-4026
PO BOX 534027, PITTSBURGH, PA 15253-4027
PO BOX 534028, PITTSBURGH, PA 15253-4028
PO BOX 534029, PITTSBURGH, PA 15253-4029
PO BOX 534030, PITTSBURGH, PA 15253-4030
PO BOX 534031, PITTSBURGH, PA 15253-4031
PO BOX 534032, PITTSBURGH, PA 15253-4032
PO BOX 534033, PITTSBURGH, PA 15253-4033
PO BOX 534034, PITTSBURGH, PA 15253-4034
PO BOX 534035, PITTSBURGH, PA 15253-4035
PO BOX 534036, PITTSBURGH, PA 15253-4036
PO BOX 534037, PITTSBURGH, PA 15253-4037
PO BOX 534038, PITTSBURGH, PA 15253-4038
PO BOX 534039, PITTSBURGH, PA 15253-4039
PO BOX 534040, PITTSBURGH, PA 15253-4040
PO BOX 534041, PITTSBURGH, PA 15253-4041
PO BOX 534042, PITTSBURGH, PA 15253-4042
PO BOX 534043, PITTSBURGH, PA 15253-4043
PO BOX 534044, PITTSBURGH, PA 15253-4044
PO BOX 534045, PITTSBURGH, PA 15253-4045
PO BOX 534046, PITTSBURGH, PA 15253-4046
PO BOX 534047, PITTSBURGH, PA 15253-4047
PO BOX 534048, PITTSBURGH, PA 15253-4048
PO BOX 534049, PITTSBURGH, PA 15253-4049
PO BOX 534050, PITTSBURGH, PA 15253-4050
PO BOX 534051, PITTSBURGH, PA 15253-4051
PO BOX 534052, PITTSBURGH, PA 15253-4052
PO BOX 534053, PITTSBURGH, PA 15253-4053
PO BOX 534054, PITTSBURGH, PA 15253-4054
PO BOX 534055, PITTSBURGH, PA 15253-4055
PO BOX 534056, PITTSBURGH, PA 15253-4056
PO BOX 534057, PITTSBURGH, PA 15253-4057
PO BOX 534058, PITTSBURGH, PA 15253-4058
PO BOX 534059, PITTSBURGH, PA 15253-4059
PO BOX 534060, PITTSBURGH, PA 15253-4060
PO BOX 534061, PITTSBURGH, PA 15253-4061
PO BOX 534062, PITTSBURGH, PA 15253-4062
PO BOX 534063, PITTSBURGH, PA 15253-4063
PO BOX 534064, PITTSBURGH, PA 15253-4064
PO BOX 534065, PITTSBURGH, PA 15253-4065
PO BOX 534066, PITTSBURGH, PA 15253-4066
PO BOX 534067, PITTSBURGH, PA 15253-4067
PO BOX 534068, PITTSBURGH, PA 15253-4068
PO BOX 534069, PITTSBURGH, PA 15253-4069
PO BOX 534070, PITTSBURGH, PA 15253-4070
PO BOX 534071, PITTSBURGH, PA 15253-4071
PO BOX 534072, PITTSBURGH, PA 15253-4072
PO BOX 534073, PITTSBURGH, PA 15253-4073
PO BOX 534074, PITTSBURGH, PA 15253-4074
PO BOX 534075, PITTSBURGH, PA 15253-4075
PO BOX 534076, PITTSBURGH, PA 15253-4076
PO BOX 534077, PITTSBURGH, PA 15253-4077
PO BOX 534078, PITTSBURGH, PA 15253-4078
PO BOX 534079, PITTSBURGH, PA 15253-4079
PO BOX 534080, PITTSBURGH, PA 15253-4080
PO BOX 534081, PITTSBURGH, PA 15253-4081
PO BOX 534082, PITTSBURGH, PA 15253-4082
PO BOX 534083, PITTSBURGH, PA 15253-4083
PO BOX 534084, PITTSBURGH, PA 15253-4084
PO BOX 534085, PITTSBURGH, PA 15253-4085
PO BOX 534086, PITTSBURGH, PA 15253-4086
PO BOX 534087, PITTSBURGH, PA 15253-4087
PO BOX 534088, PITTSBURGH, PA 15253-4088
PO BOX 534089, PITTSBURGH, PA 15253-4089
PO BOX 534090, PITTSBURGH, PA 15253-4090
PO BOX 534091, PITTSBURGH, PA 15253-4091
PO BOX 534092, PITTSBURGH, PA 15253-4092
PO BOX 534093, PITTSBURGH, PA 15253-4093
PO BOX 534094, PITTSBURGH, PA 15253-4094
PO BOX 534095, PITTSBURGH, PA 15253-4095
PO BOX 534096, PITTSBURGH, PA 15253-4096
PO BOX 534097, PITTSBURGH, PA 15253-4097
PO BOX 534098, PITTSBURGH, PA 15253-4098
PO BOX 534099, PITTSBURGH, PA 15253-4099
PO BOX 534100, PITTSBURGH, PA 15253-4100
PO BOX 534101, PITTSBURGH, PA 15253-4101
PO BOX 534102, PITTSBURGH, PA 15253-4102
PO BOX 534103, PITTSBURGH, PA 15253-4103
PO BOX 534104, PITTSBURGH, PA 15253-4104
PO BOX 534105, PITTSBURGH, PA 15253-4105
PO BOX 534106, PITTSBURGH, PA 15253-4106
PO BOX 534107, PITTSBURGH, PA 15253-4107
PO BOX 534108, PITTSBURGH, PA 15253-4108
PO BOX 534109, PITTSBURGH, PA 15253-4109
PO BOX 534110, PITTSBURGH, PA 15253-4110
PO BOX 534111, PITTSBURGH, PA 15253-4111
PO BOX 534112, PITTSBURGH, PA 15253-4112
PO BOX 534113, PITTSBURGH, PA 15253-4113
PO BOX 534114, PITTSBURGH, PA 15253-4114
PO BOX 534115, PITTSBURGH, PA 15253-4115
PO BOX 534116, PITTSBURGH, PA 15253-4116
PO BOX 534117, PITTSBURGH, PA 15253-4117
PO BOX 534118, PITTSBURGH, PA 15253-4118
PO BOX 534119, PITTSBURGH, PA 15253-4119
PO BOX 534120, PITTSBURGH, PA 15253-4120
PO BOX 534121, PITTSBURGH, PA 15253-4121
PO BOX 534122, PITTSBURGH, PA 15253-4122
PO BOX 534123, PITTSBURGH, PA 15253-4123
PO BOX 534124, PITTSBURGH, PA 15253-4124
PO BOX 534125, PITTSBURGH, PA 15253-4125
PO BOX 534126, PITTSBURGH, PA 15253-4126
PO BOX 534127, PITTSBURGH, PA 15253-4127
PO BOX 534128, PITTSBURGH, PA 15253-4128
PO BOX 534129, PITTSBURGH, PA 15253-4129
PO BOX 534130, PITTSBURGH, PA 15253-4130
PO BOX 534131, PITTSBURGH, PA 15253-4131
PO BOX 534132, PITTSBURGH, PA 15253-4132
PO BOX 534133, PITTSBURGH, PA 15253-4133
PO BOX 534134, PITTSBURGH, PA 15253-4134
PO BOX 534135, PITTSBURGH, PA 15253-4135
PO BOX 534136, PITTSBURGH, PA 15253-4136
PO BOX 534137, PITTSBURGH, PA 15253-4137
PO BOX 534138, PITTSBURGH, PA 15253-4138
PO BOX 534139, PITTSBURGH, PA 15253-4139
PO BOX 534140, PITTSBURGH, PA 15253-4140
PO BOX 534141, PITTSBURGH, PA 15253-4141
PO BOX 534142, PITTSBURGH, PA 15253-4142
PO BOX 534143, PITTSBURGH, PA 15253-4143
PO BOX 534144, PITTSBURGH, PA 15253-4144
PO BOX 534145, PITTSBURGH, PA 15253-4145
PO BOX 534146, PITTSBURGH, PA 15253-4146
PO BOX 534147, PITTSBURGH, PA 15253-4147
PO BOX 534148, PITTSBURGH, PA 15253-4148
PO BOX 534149, PITTSBURGH, PA 15253-4149
PO BOX 534150, PITTSBURGH, PA 15253-4150
PO BOX 534151, PITTSBURGH, PA 15253-4151
PO BOX 534152, PITTSBURGH, PA 15253-4152
PO BOX 534153, PITTSBURGH, PA 15253-4153
PO BOX 534154, PITTSBURGH, PA 15253-4154
PO BOX 534155, PITTSBURGH, PA 15253-4155
PO BOX 534156, PITTSBURGH, PA 15253-4156
PO BOX 534157, PITTSBURGH, PA 15253-4157
PO BOX 534158, PITTSBURGH, PA 15253-4158
PO BOX 534159, PITTSBURGH, PA 15253-4159
PO BOX 534160, PITTSBURGH, PA 15253-4160
PO BOX 534161, PITTSBURGH, PA 15253-4161
PO BOX 534162, PITTSBURGH, PA 15253-4162
PO BOX 534163, PITTSBURGH, PA 15253-4163
PO BOX 534164, PITTSBURGH, PA 15253-4164
PO BOX 534165, PITTSBURGH, PA 15253-4165
PO BOX 534166, PITTSBURGH, PA 15253-4166
PO BOX 534167, PITTSBURGH, PA 15253-4167
PO BOX 534168, PITTSBURGH, PA 15253-4168
PO BOX 534169, PITTSBURGH, PA 15253-4169
PO BOX 534170, PITTSBURGH, PA 15253-4170
PO BOX 534171, PITTSBURGH, PA 15253-4171
PO BOX 534172, PITTSBURGH, PA 15253-4172
PO BOX 534173, PITTSBURGH, PA 15253-4173
PO BOX 534174, PITTSBURGH, PA 15253-4174
PO BOX 534175, PITTSBURGH, PA 15253-4175
PO BOX 534176, PITTSBURGH, PA 15253-4176
PO BOX 534177, PITTSBURGH, PA 15253-4177
PO BOX 534178, PITTSBURGH, PA 15253-4178
PO BOX 534179, PITTSBURGH, PA 15253-4179
PO BOX 534180, PITTSBURGH, PA 15253-4180
PO BOX 534181, PITTSBURGH, PA 15253-4181
PO BOX 534182, PITTSBURGH, PA 15253-4182
PO BOX 534183, PITTSBURGH, PA 15253-4183
PO BOX 534184, PITTSBURGH, PA 15253-4184
PO BOX 534185, PITTSBURGH, PA 15253-4185
PO BOX 534186, PITTSBURGH, PA 15253-4186
PO BOX 534187, PITTSBURGH, PA 15253-4187
PO BOX 534188, PITTSBURGH, PA 15253-4188
PO BOX 534189, PITTSBURGH, PA 15253-4189
PO BOX 534190, PITTSBURGH, PA 15253-4190
PO BOX 534191, PITTSBURGH, PA 15253-4191
PO BOX 534192, PITTSBURGH, PA 15253-4192
PO BOX 534193, PITTSBURGH, PA 15253-4193
PO BOX 534194, PITTSBURGH, PA 15253-4194
PO BOX 534195, PITTSBURGH, PA 15253-4195
PO BOX 534196, PITTSBURGH, PA 15253-4196
PO BOX 534197, PITTSBURGH, PA 15253-4197
PO BOX 534198, PITTSBURGH, PA 15253-4198
PO BOX 534199, PITTSBURGH, PA 15253-4199
PO BOX 534200, PITTSBURGH, PA 15253-4200
Add new comment