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, ALLISON, TX 79003-0001
PO BOX 2, ALLISON, TX 79003-0002
PO BOX 3, ALLISON, TX 79003-0003
PO BOX 4, ALLISON, TX 79003-0004
PO BOX 5, ALLISON, TX 79003-0005
PO BOX 6, ALLISON, TX 79003-0006
PO BOX 7, ALLISON, TX 79003-0007
PO BOX 8, ALLISON, TX 79003-0008
PO BOX 9, ALLISON, TX 79003-0009
PO BOX 10, ALLISON, TX 79003-0010
PO BOX 11, ALLISON, TX 79003-0011
PO BOX 12, ALLISON, TX 79003-0012
PO BOX 13, ALLISON, TX 79003-0013
PO BOX 14, ALLISON, TX 79003-0014
PO BOX 15, ALLISON, TX 79003-0015
PO BOX 16, ALLISON, TX 79003-0016
PO BOX 17, ALLISON, TX 79003-0017
PO BOX 18, ALLISON, TX 79003-0018
PO BOX 19, ALLISON, TX 79003-0019
PO BOX 20, ALLISON, TX 79003-0020
PO BOX 21, ALLISON, TX 79003-0021
PO BOX 22, ALLISON, TX 79003-0022
PO BOX 23, ALLISON, TX 79003-0023
PO BOX 24, ALLISON, TX 79003-0024
PO BOX 25, ALLISON, TX 79003-0025
PO BOX 26, ALLISON, TX 79003-0026
PO BOX 27, ALLISON, TX 79003-0027
PO BOX 28, ALLISON, TX 79003-0028
PO BOX 29, ALLISON, TX 79003-0029
PO BOX 30, ALLISON, TX 79003-0030
PO BOX 31, ALLISON, TX 79003-0031
PO BOX 32, ALLISON, TX 79003-0032
PO BOX 33, ALLISON, TX 79003-0033
PO BOX 34, ALLISON, TX 79003-0034
PO BOX 35, ALLISON, TX 79003-0035
PO BOX 36, ALLISON, TX 79003-0036
PO BOX 37, ALLISON, TX 79003-0037
PO BOX 38, ALLISON, TX 79003-0038
PO BOX 39, ALLISON, TX 79003-0039
PO BOX 40, ALLISON, TX 79003-0040
PO BOX 41, ALLISON, TX 79003-0041
PO BOX 42, ALLISON, TX 79003-0042
PO BOX 43, ALLISON, TX 79003-0043
PO BOX 44, ALLISON, TX 79003-0044
PO BOX 45, ALLISON, TX 79003-0045
PO BOX 46, ALLISON, TX 79003-0046
PO BOX 47, ALLISON, TX 79003-0047
PO BOX 48, ALLISON, TX 79003-0048
PO BOX 49, ALLISON, TX 79003-0049
PO BOX 50, ALLISON, TX 79003-0050
PO BOX 51, ALLISON, TX 79003-0051
PO BOX 52, ALLISON, TX 79003-0052
PO BOX 53, ALLISON, TX 79003-0053
PO BOX 54, ALLISON, TX 79003-0054
PO BOX 55, ALLISON, TX 79003-0055
PO BOX 56, ALLISON, TX 79003-0056
PO BOX 57, ALLISON, TX 79003-0057
PO BOX 58, ALLISON, TX 79003-0058
PO BOX 59, ALLISON, TX 79003-0059
PO BOX 60, ALLISON, TX 79003-0060
PO BOX 61, ALLISON, TX 79003-0061
PO BOX 62, ALLISON, TX 79003-0062
PO BOX 63, ALLISON, TX 79003-0063
PO BOX 64, ALLISON, TX 79003-0064
PO BOX 65, ALLISON, TX 79003-0065
PO BOX 66, ALLISON, TX 79003-0066
PO BOX 67, ALLISON, TX 79003-0067
PO BOX 68, ALLISON, TX 79003-0068
PO BOX 69, ALLISON, TX 79003-0069
PO BOX 70, ALLISON, TX 79003-0070
PO BOX 71, ALLISON, TX 79003-0071
PO BOX 72, ALLISON, TX 79003-0072
PO BOX 73, ALLISON, TX 79003-0073
PO BOX 74, ALLISON, TX 79003-0074
PO BOX 75, ALLISON, TX 79003-0075
PO BOX 76, ALLISON, TX 79003-0076
PO BOX 77, ALLISON, TX 79003-0077
PO BOX 78, ALLISON, TX 79003-0078
PO BOX 79, ALLISON, TX 79003-0079
PO BOX 80, ALLISON, TX 79003-0080
PO BOX 81, ALLISON, TX 79003-0081
PO BOX 82, ALLISON, TX 79003-0082
PO BOX 83, ALLISON, TX 79003-0083
PO BOX 84, ALLISON, TX 79003-0084
PO BOX 85, ALLISON, TX 79003-0085
PO BOX 86, ALLISON, TX 79003-0086
PO BOX 87, ALLISON, TX 79003-0087
PO BOX 88, ALLISON, TX 79003-0088
PO BOX 89, ALLISON, TX 79003-0089
PO BOX 90, ALLISON, TX 79003-0090
PO BOX 91, ALLISON, TX 79003-0091
PO BOX 92, ALLISON, TX 79003-0092
PO BOX 93, ALLISON, TX 79003-0093
PO BOX 94, ALLISON, TX 79003-0094
PO BOX 95, ALLISON, TX 79003-0095
PO BOX 96, ALLISON, TX 79003-0096
PO BOX 97, ALLISON, TX 79003-0097
PO BOX 98, ALLISON, TX 79003-0098
PO BOX 99, ALLISON, TX 79003-0099
PO BOX 100, ALLISON, TX 79003-0100
PO BOX 101, ALLISON, TX 79003-0101
PO BOX 102, ALLISON, TX 79003-0102
PO BOX 103, ALLISON, TX 79003-0103
PO BOX 104, ALLISON, TX 79003-0104
PO BOX 105, ALLISON, TX 79003-0105
PO BOX 106, ALLISON, TX 79003-0106
PO BOX 107, ALLISON, TX 79003-0107
PO BOX 108, ALLISON, TX 79003-0108
PO BOX 109, ALLISON, TX 79003-0109
PO BOX 110, ALLISON, TX 79003-0110
PO BOX 111, ALLISON, TX 79003-0111
PO BOX 112, ALLISON, TX 79003-0112
PO BOX 113, ALLISON, TX 79003-0113
PO BOX 114, ALLISON, TX 79003-0114
PO BOX 115, ALLISON, TX 79003-0115
PO BOX 116, ALLISON, TX 79003-0116
PO BOX 117, ALLISON, TX 79003-0117
PO BOX 118, ALLISON, TX 79003-0118
PO BOX 119, ALLISON, TX 79003-0119
PO BOX 120, ALLISON, TX 79003-0120
PO BOX 121, ALLISON, TX 79003-0121
PO BOX 122, ALLISON, TX 79003-0122
PO BOX 123, ALLISON, TX 79003-0123
PO BOX 124, ALLISON, TX 79003-0124
PO BOX 125, ALLISON, TX 79003-0125
PO BOX 126, ALLISON, TX 79003-0126
PO BOX 127, ALLISON, TX 79003-0127
PO BOX 128, ALLISON, TX 79003-0128
PO BOX 129, ALLISON, TX 79003-0129
PO BOX 130, ALLISON, TX 79003-0130
PO BOX 131, ALLISON, TX 79003-0131
PO BOX 132, ALLISON, TX 79003-0132
PO BOX 133, ALLISON, TX 79003-0133
PO BOX 134, ALLISON, TX 79003-0134
PO BOX 135, ALLISON, TX 79003-0135
PO BOX 136, ALLISON, TX 79003-0136
PO BOX 137, ALLISON, TX 79003-0137
PO BOX 138, ALLISON, TX 79003-0138
PO BOX 139, ALLISON, TX 79003-0139
PO BOX 140, ALLISON, TX 79003-0140
PO BOX 141, ALLISON, TX 79003-0141
PO BOX 142, ALLISON, TX 79003-0142
PO BOX 143, ALLISON, TX 79003-0143
PO BOX 144, ALLISON, TX 79003-0144
PO BOX 145, ALLISON, TX 79003-0145
PO BOX 146, ALLISON, TX 79003-0146
PO BOX 147, ALLISON, TX 79003-0147
PO BOX 148, ALLISON, TX 79003-0148
PO BOX 149, ALLISON, TX 79003-0149
PO BOX 150, ALLISON, TX 79003-0150
PO BOX 151, ALLISON, TX 79003-0151
PO BOX 152, ALLISON, TX 79003-0152
PO BOX 153, ALLISON, TX 79003-0153
PO BOX 154, ALLISON, TX 79003-0154
PO BOX 155, ALLISON, TX 79003-0155
PO BOX 156, ALLISON, TX 79003-0156
PO BOX 157, ALLISON, TX 79003-0157
PO BOX 158, ALLISON, TX 79003-0158
PO BOX 159, ALLISON, TX 79003-0159
PO BOX 160, ALLISON, TX 79003-0160
PO BOX 161, ALLISON, TX 79003-0161
PO BOX 162, ALLISON, TX 79003-0162
PO BOX 163, ALLISON, TX 79003-0163
PO BOX 164, ALLISON, TX 79003-0164
PO BOX 165, ALLISON, TX 79003-0165
PO BOX 166, ALLISON, TX 79003-0166
PO BOX 167, ALLISON, TX 79003-0167
PO BOX 168, ALLISON, TX 79003-0168
PO BOX 169, ALLISON, TX 79003-0169
PO BOX 170, ALLISON, TX 79003-0170
PO BOX 171, ALLISON, TX 79003-0171
PO BOX 172, ALLISON, TX 79003-0172
PO BOX 173, ALLISON, TX 79003-0173
PO BOX 174, ALLISON, TX 79003-0174
PO BOX 175, ALLISON, TX 79003-0175
PO BOX 176, ALLISON, TX 79003-0176
PO BOX 177, ALLISON, TX 79003-0177
PO BOX 178, ALLISON, TX 79003-0178
PO BOX 179, ALLISON, TX 79003-0179
PO BOX 180, ALLISON, TX 79003-0180
PO BOX 181, ALLISON, TX 79003-0181
PO BOX 182, ALLISON, TX 79003-0182
PO BOX 183, ALLISON, TX 79003-0183
PO BOX 184, ALLISON, TX 79003-0184
PO BOX 185, ALLISON, TX 79003-0185
PO BOX 186, ALLISON, TX 79003-0186
PO BOX 187, ALLISON, TX 79003-0187
PO BOX 188, ALLISON, TX 79003-0188
PO BOX 189, ALLISON, TX 79003-0189
PO BOX 190, ALLISON, TX 79003-0190
PO BOX 191, ALLISON, TX 79003-0191
PO BOX 192, ALLISON, TX 79003-0192
PO BOX 193, ALLISON, TX 79003-0193
PO BOX 194, ALLISON, TX 79003-0194
PO BOX 195, ALLISON, TX 79003-0195
PO BOX 196, ALLISON, TX 79003-0196
PO BOX 197, ALLISON, TX 79003-0197
PO BOX 198, ALLISON, TX 79003-0198
PO BOX 199, ALLISON, TX 79003-0199
PO BOX 200, ALLISON, TX 79003-0200
PO BOX 201, ALLISON, TX 79003-0201
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