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 1, HARRISON CITY, PA 15636-0001
PO BOX 2, HARRISON CITY, PA 15636-0002
PO BOX 3, HARRISON CITY, PA 15636-0003
PO BOX 4, HARRISON CITY, PA 15636-0004
PO BOX 5, HARRISON CITY, PA 15636-0005
PO BOX 6, HARRISON CITY, PA 15636-0006
PO BOX 7, HARRISON CITY, PA 15636-0007
PO BOX 8, HARRISON CITY, PA 15636-0008
PO BOX 9, HARRISON CITY, PA 15636-0009
PO BOX 10, HARRISON CITY, PA 15636-0010
PO BOX 11, HARRISON CITY, PA 15636-0011
PO BOX 12, HARRISON CITY, PA 15636-0012
PO BOX 13, HARRISON CITY, PA 15636-0013
PO BOX 14, HARRISON CITY, PA 15636-0014
PO BOX 15, HARRISON CITY, PA 15636-0015
PO BOX 16, HARRISON CITY, PA 15636-0016
PO BOX 17, HARRISON CITY, PA 15636-0017
PO BOX 18, HARRISON CITY, PA 15636-0018
PO BOX 19, HARRISON CITY, PA 15636-0019
PO BOX 20, HARRISON CITY, PA 15636-0020
PO BOX 21, HARRISON CITY, PA 15636-0021
PO BOX 22, HARRISON CITY, PA 15636-0022
PO BOX 23, HARRISON CITY, PA 15636-0023
PO BOX 24, HARRISON CITY, PA 15636-0024
PO BOX 25, HARRISON CITY, PA 15636-0025
PO BOX 26, HARRISON CITY, PA 15636-0026
PO BOX 27, HARRISON CITY, PA 15636-0027
PO BOX 28, HARRISON CITY, PA 15636-0028
PO BOX 29, HARRISON CITY, PA 15636-0029
PO BOX 30, HARRISON CITY, PA 15636-0030
PO BOX 31, HARRISON CITY, PA 15636-0031
PO BOX 32, HARRISON CITY, PA 15636-0032
PO BOX 33, HARRISON CITY, PA 15636-0033
PO BOX 34, HARRISON CITY, PA 15636-0034
PO BOX 35, HARRISON CITY, PA 15636-0035
PO BOX 36, HARRISON CITY, PA 15636-0036
PO BOX 37, HARRISON CITY, PA 15636-0037
PO BOX 38, HARRISON CITY, PA 15636-0038
PO BOX 39, HARRISON CITY, PA 15636-0039
PO BOX 40, HARRISON CITY, PA 15636-0040
PO BOX 41, HARRISON CITY, PA 15636-0041
PO BOX 42, HARRISON CITY, PA 15636-0042
PO BOX 43, HARRISON CITY, PA 15636-0043
PO BOX 44, HARRISON CITY, PA 15636-0044
PO BOX 45, HARRISON CITY, PA 15636-0045
PO BOX 46, HARRISON CITY, PA 15636-0046
PO BOX 47, HARRISON CITY, PA 15636-0047
PO BOX 48, HARRISON CITY, PA 15636-0048
PO BOX 49, HARRISON CITY, PA 15636-0049
PO BOX 50, HARRISON CITY, PA 15636-0050
PO BOX 51, HARRISON CITY, PA 15636-0051
PO BOX 52, HARRISON CITY, PA 15636-0052
PO BOX 53, HARRISON CITY, PA 15636-0053
PO BOX 54, HARRISON CITY, PA 15636-0054
PO BOX 55, HARRISON CITY, PA 15636-0055
PO BOX 56, HARRISON CITY, PA 15636-0056
PO BOX 57, HARRISON CITY, PA 15636-0057
PO BOX 58, HARRISON CITY, PA 15636-0058
PO BOX 59, HARRISON CITY, PA 15636-0059
PO BOX 60, HARRISON CITY, PA 15636-0060
PO BOX 61, HARRISON CITY, PA 15636-0061
PO BOX 62, HARRISON CITY, PA 15636-0062
PO BOX 63, HARRISON CITY, PA 15636-0063
PO BOX 64, HARRISON CITY, PA 15636-0064
PO BOX 65, HARRISON CITY, PA 15636-0065
PO BOX 66, HARRISON CITY, PA 15636-0066
PO BOX 67, HARRISON CITY, PA 15636-0067
PO BOX 68, HARRISON CITY, PA 15636-0068
PO BOX 69, HARRISON CITY, PA 15636-0069
PO BOX 70, HARRISON CITY, PA 15636-0070
PO BOX 71, HARRISON CITY, PA 15636-0071
PO BOX 72, HARRISON CITY, PA 15636-0072
PO BOX 73, HARRISON CITY, PA 15636-0073
PO BOX 74, HARRISON CITY, PA 15636-0074
PO BOX 75, HARRISON CITY, PA 15636-0075
PO BOX 76, HARRISON CITY, PA 15636-0076
PO BOX 77, HARRISON CITY, PA 15636-0077
PO BOX 78, HARRISON CITY, PA 15636-0078
PO BOX 79, HARRISON CITY, PA 15636-0079
PO BOX 80, HARRISON CITY, PA 15636-0080
PO BOX 81, HARRISON CITY, PA 15636-0081
PO BOX 82, HARRISON CITY, PA 15636-0082
PO BOX 83, HARRISON CITY, PA 15636-0083
PO BOX 84, HARRISON CITY, PA 15636-0084
PO BOX 85, HARRISON CITY, PA 15636-0085
PO BOX 86, HARRISON CITY, PA 15636-0086
PO BOX 87, HARRISON CITY, PA 15636-0087
PO BOX 88, HARRISON CITY, PA 15636-0088
PO BOX 89, HARRISON CITY, PA 15636-0089
PO BOX 90, HARRISON CITY, PA 15636-0090
PO BOX 91, HARRISON CITY, PA 15636-0091
PO BOX 92, HARRISON CITY, PA 15636-0092
PO BOX 93, HARRISON CITY, PA 15636-0093
PO BOX 94, HARRISON CITY, PA 15636-0094
PO BOX 95, HARRISON CITY, PA 15636-0095
PO BOX 96, HARRISON CITY, PA 15636-0096
PO BOX 97, HARRISON CITY, PA 15636-0097
PO BOX 98, HARRISON CITY, PA 15636-0098
PO BOX 99, HARRISON CITY, PA 15636-0099
PO BOX 100, HARRISON CITY, PA 15636-0100
PO BOX 101, HARRISON CITY, PA 15636-0101
PO BOX 102, HARRISON CITY, PA 15636-0102
PO BOX 103, HARRISON CITY, PA 15636-0103
PO BOX 104, HARRISON CITY, PA 15636-0104
PO BOX 105, HARRISON CITY, PA 15636-0105
PO BOX 106, HARRISON CITY, PA 15636-0106
PO BOX 107, HARRISON CITY, PA 15636-0107
PO BOX 108, HARRISON CITY, PA 15636-0108
PO BOX 109, HARRISON CITY, PA 15636-0109
PO BOX 110, HARRISON CITY, PA 15636-0110
PO BOX 111, HARRISON CITY, PA 15636-0111
PO BOX 112, HARRISON CITY, PA 15636-0112
PO BOX 113, HARRISON CITY, PA 15636-0113
PO BOX 114, HARRISON CITY, PA 15636-0114
PO BOX 115, HARRISON CITY, PA 15636-0115
PO BOX 116, HARRISON CITY, PA 15636-0116
PO BOX 117, HARRISON CITY, PA 15636-0117
PO BOX 118, HARRISON CITY, PA 15636-0118
PO BOX 119, HARRISON CITY, PA 15636-0119
PO BOX 120, HARRISON CITY, PA 15636-0120
PO BOX 121, HARRISON CITY, PA 15636-0121
PO BOX 122, HARRISON CITY, PA 15636-0122
PO BOX 123, HARRISON CITY, PA 15636-0123
PO BOX 124, HARRISON CITY, PA 15636-0124
PO BOX 125, HARRISON CITY, PA 15636-0125
PO BOX 126, HARRISON CITY, PA 15636-0126
PO BOX 127, HARRISON CITY, PA 15636-0127
PO BOX 128, HARRISON CITY, PA 15636-0128
PO BOX 129, HARRISON CITY, PA 15636-0129
PO BOX 130, HARRISON CITY, PA 15636-0130
PO BOX 131, HARRISON CITY, PA 15636-0131
PO BOX 132, HARRISON CITY, PA 15636-0132
PO BOX 133, HARRISON CITY, PA 15636-0133
PO BOX 134, HARRISON CITY, PA 15636-0134
PO BOX 135, HARRISON CITY, PA 15636-0135
PO BOX 136, HARRISON CITY, PA 15636-0136
PO BOX 137, HARRISON CITY, PA 15636-0137
PO BOX 138, HARRISON CITY, PA 15636-0138
PO BOX 139, HARRISON CITY, PA 15636-0139
PO BOX 140, HARRISON CITY, PA 15636-0140
PO BOX 141, HARRISON CITY, PA 15636-0141
PO BOX 142, HARRISON CITY, PA 15636-0142
PO BOX 143, HARRISON CITY, PA 15636-0143
PO BOX 144, HARRISON CITY, PA 15636-0144
PO BOX 145, HARRISON CITY, PA 15636-0145
PO BOX 146, HARRISON CITY, PA 15636-0146
PO BOX 147, HARRISON CITY, PA 15636-0147
PO BOX 148, HARRISON CITY, PA 15636-0148
PO BOX 149, HARRISON CITY, PA 15636-0149
PO BOX 150, HARRISON CITY, PA 15636-0150
PO BOX 151, HARRISON CITY, PA 15636-0151
PO BOX 152, HARRISON CITY, PA 15636-0152
PO BOX 153, HARRISON CITY, PA 15636-0153
PO BOX 154, HARRISON CITY, PA 15636-0154
PO BOX 155, HARRISON CITY, PA 15636-0155
PO BOX 156, HARRISON CITY, PA 15636-0156
PO BOX 157, HARRISON CITY, PA 15636-0157
PO BOX 158, HARRISON CITY, PA 15636-0158
PO BOX 159, HARRISON CITY, PA 15636-0159
PO BOX 160, HARRISON CITY, PA 15636-0160
PO BOX 161, HARRISON CITY, PA 15636-0161
PO BOX 162, HARRISON CITY, PA 15636-0162
PO BOX 163, HARRISON CITY, PA 15636-0163
PO BOX 164, HARRISON CITY, PA 15636-0164
PO BOX 165, HARRISON CITY, PA 15636-0165
PO BOX 166, HARRISON CITY, PA 15636-0166
PO BOX 167, HARRISON CITY, PA 15636-0167
PO BOX 168, HARRISON CITY, PA 15636-0168
PO BOX 169, HARRISON CITY, PA 15636-0169
PO BOX 170, HARRISON CITY, PA 15636-0170
PO BOX 171, HARRISON CITY, PA 15636-0171
PO BOX 172, HARRISON CITY, PA 15636-0172
PO BOX 173, HARRISON CITY, PA 15636-0173
PO BOX 174, HARRISON CITY, PA 15636-0174
PO BOX 175, HARRISON CITY, PA 15636-0175
PO BOX 176, HARRISON CITY, PA 15636-0176
PO BOX 177, HARRISON CITY, PA 15636-0177
PO BOX 178, HARRISON CITY, PA 15636-0178
PO BOX 179, HARRISON CITY, PA 15636-0179
PO BOX 180, HARRISON CITY, PA 15636-0180
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