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 11, BANCROFT, IA 50517-0011
PO BOX 12, BANCROFT, IA 50517-0012
PO BOX 13, BANCROFT, IA 50517-0013
PO BOX 14, BANCROFT, IA 50517-0014
PO BOX 15, BANCROFT, IA 50517-0015
PO BOX 16, BANCROFT, IA 50517-0016
PO BOX 17, BANCROFT, IA 50517-0017
PO BOX 18, BANCROFT, IA 50517-0018
PO BOX 19, BANCROFT, IA 50517-0019
PO BOX 20, BANCROFT, IA 50517-0020
PO BOX 21, BANCROFT, IA 50517-0021
PO BOX 22, BANCROFT, IA 50517-0022
PO BOX 23, BANCROFT, IA 50517-0023
PO BOX 24, BANCROFT, IA 50517-0024
PO BOX 25, BANCROFT, IA 50517-0025
PO BOX 26, BANCROFT, IA 50517-0026
PO BOX 27, BANCROFT, IA 50517-0027
PO BOX 28, BANCROFT, IA 50517-0028
PO BOX 29, BANCROFT, IA 50517-0029
PO BOX 30, BANCROFT, IA 50517-0030
PO BOX 31, BANCROFT, IA 50517-0031
PO BOX 32, BANCROFT, IA 50517-0032
PO BOX 33, BANCROFT, IA 50517-0033
PO BOX 34, BANCROFT, IA 50517-0034
PO BOX 35, BANCROFT, IA 50517-0035
PO BOX 36, BANCROFT, IA 50517-0036
PO BOX 37, BANCROFT, IA 50517-0037
PO BOX 38, BANCROFT, IA 50517-0038
PO BOX 39, BANCROFT, IA 50517-0039
PO BOX 40, BANCROFT, IA 50517-0040
PO BOX 41, BANCROFT, IA 50517-0041
PO BOX 42, BANCROFT, IA 50517-0042
PO BOX 43, BANCROFT, IA 50517-0043
PO BOX 44, BANCROFT, IA 50517-0044
PO BOX 45, BANCROFT, IA 50517-0045
PO BOX 46, BANCROFT, IA 50517-0046
PO BOX 47, BANCROFT, IA 50517-0047
PO BOX 48, BANCROFT, IA 50517-0048
PO BOX 49, BANCROFT, IA 50517-0049
PO BOX 50, BANCROFT, IA 50517-0050
PO BOX 51, BANCROFT, IA 50517-0051
PO BOX 52, BANCROFT, IA 50517-0052
PO BOX 53, BANCROFT, IA 50517-0053
PO BOX 54, BANCROFT, IA 50517-0054
PO BOX 55, BANCROFT, IA 50517-0055
PO BOX 56, BANCROFT, IA 50517-0056
PO BOX 57, BANCROFT, IA 50517-0057
PO BOX 58, BANCROFT, IA 50517-0058
PO BOX 59, BANCROFT, IA 50517-0059
PO BOX 60, BANCROFT, IA 50517-0060
PO BOX 61, BANCROFT, IA 50517-0061
PO BOX 62, BANCROFT, IA 50517-0062
PO BOX 63, BANCROFT, IA 50517-0063
PO BOX 64, BANCROFT, IA 50517-0064
PO BOX 65, BANCROFT, IA 50517-0065
PO BOX 66, BANCROFT, IA 50517-0066
PO BOX 67, BANCROFT, IA 50517-0067
PO BOX 68, BANCROFT, IA 50517-0068
PO BOX 69, BANCROFT, IA 50517-0069
PO BOX 70, BANCROFT, IA 50517-0070
PO BOX 71, BANCROFT, IA 50517-0071
PO BOX 72, BANCROFT, IA 50517-0072
PO BOX 73, BANCROFT, IA 50517-0073
PO BOX 74, BANCROFT, IA 50517-0074
PO BOX 75, BANCROFT, IA 50517-0075
PO BOX 76, BANCROFT, IA 50517-0076
PO BOX 77, BANCROFT, IA 50517-0077
PO BOX 78, BANCROFT, IA 50517-0078
PO BOX 79, BANCROFT, IA 50517-0079
PO BOX 80, BANCROFT, IA 50517-0080
PO BOX 81, BANCROFT, IA 50517-0081
PO BOX 82, BANCROFT, IA 50517-0082
PO BOX 83, BANCROFT, IA 50517-0083
PO BOX 84, BANCROFT, IA 50517-0084
PO BOX 85, BANCROFT, IA 50517-0085
PO BOX 86, BANCROFT, IA 50517-0086
PO BOX 87, BANCROFT, IA 50517-0087
PO BOX 88, BANCROFT, IA 50517-0088
PO BOX 89, BANCROFT, IA 50517-0089
PO BOX 90, BANCROFT, IA 50517-0090
PO BOX 91, BANCROFT, IA 50517-0091
PO BOX 92, BANCROFT, IA 50517-0092
PO BOX 93, BANCROFT, IA 50517-0093
PO BOX 94, BANCROFT, IA 50517-0094
PO BOX 95, BANCROFT, IA 50517-0095
PO BOX 96, BANCROFT, IA 50517-0096
PO BOX 97, BANCROFT, IA 50517-0097
PO BOX 98, BANCROFT, IA 50517-0098
PO BOX 99, BANCROFT, IA 50517-0099
PO BOX 100, BANCROFT, IA 50517-0100
PO BOX 101, BANCROFT, IA 50517-0101
PO BOX 102, BANCROFT, IA 50517-0102
PO BOX 103, BANCROFT, IA 50517-0103
PO BOX 104, BANCROFT, IA 50517-0104
PO BOX 105, BANCROFT, IA 50517-0105
PO BOX 106, BANCROFT, IA 50517-0106
PO BOX 107, BANCROFT, IA 50517-0107
PO BOX 108, BANCROFT, IA 50517-0108
PO BOX 109, BANCROFT, IA 50517-0109
PO BOX 110, BANCROFT, IA 50517-0110
PO BOX 111, BANCROFT, IA 50517-0111
PO BOX 112, BANCROFT, IA 50517-0112
PO BOX 113, BANCROFT, IA 50517-0113
PO BOX 114, BANCROFT, IA 50517-0114
PO BOX 115, BANCROFT, IA 50517-0115
PO BOX 116, BANCROFT, IA 50517-0116
PO BOX 117, BANCROFT, IA 50517-0117
PO BOX 118, BANCROFT, IA 50517-0118
PO BOX 119, BANCROFT, IA 50517-0119
PO BOX 120, BANCROFT, IA 50517-0120
PO BOX 121, BANCROFT, IA 50517-0121
PO BOX 122, BANCROFT, IA 50517-0122
PO BOX 123, BANCROFT, IA 50517-0123
PO BOX 124, BANCROFT, IA 50517-0124
PO BOX 125, BANCROFT, IA 50517-0125
PO BOX 126, BANCROFT, IA 50517-0126
PO BOX 127, BANCROFT, IA 50517-0127
PO BOX 128, BANCROFT, IA 50517-0128
PO BOX 129, BANCROFT, IA 50517-0129
PO BOX 130, BANCROFT, IA 50517-0130
PO BOX 131, BANCROFT, IA 50517-0131
PO BOX 132, BANCROFT, IA 50517-0132
PO BOX 133, BANCROFT, IA 50517-0133
PO BOX 134, BANCROFT, IA 50517-0134
PO BOX 135, BANCROFT, IA 50517-0135
PO BOX 136, BANCROFT, IA 50517-0136
PO BOX 137, BANCROFT, IA 50517-0137
PO BOX 138, BANCROFT, IA 50517-0138
PO BOX 139, BANCROFT, IA 50517-0139
PO BOX 140, BANCROFT, IA 50517-0140
PO BOX 141, BANCROFT, IA 50517-0141
PO BOX 142, BANCROFT, IA 50517-0142
PO BOX 143, BANCROFT, IA 50517-0143
PO BOX 144, BANCROFT, IA 50517-0144
PO BOX 145, BANCROFT, IA 50517-0145
PO BOX 146, BANCROFT, IA 50517-0146
PO BOX 147, BANCROFT, IA 50517-0147
PO BOX 148, BANCROFT, IA 50517-0148
PO BOX 149, BANCROFT, IA 50517-0149
PO BOX 150, BANCROFT, IA 50517-0150
PO BOX 151, BANCROFT, IA 50517-0151
PO BOX 152, BANCROFT, IA 50517-0152
PO BOX 153, BANCROFT, IA 50517-0153
PO BOX 154, BANCROFT, IA 50517-0154
PO BOX 155, BANCROFT, IA 50517-0155
PO BOX 156, BANCROFT, IA 50517-0156
PO BOX 157, BANCROFT, IA 50517-0157
PO BOX 158, BANCROFT, IA 50517-0158
PO BOX 159, BANCROFT, IA 50517-0159
PO BOX 160, BANCROFT, IA 50517-0160
PO BOX 161, BANCROFT, IA 50517-0161
PO BOX 162, BANCROFT, IA 50517-0162
PO BOX 163, BANCROFT, IA 50517-0163
PO BOX 164, BANCROFT, IA 50517-0164
PO BOX 165, BANCROFT, IA 50517-0165
PO BOX 166, BANCROFT, IA 50517-0166
PO BOX 167, BANCROFT, IA 50517-0167
PO BOX 168, BANCROFT, IA 50517-0168
PO BOX 169, BANCROFT, IA 50517-0169
PO BOX 170, BANCROFT, IA 50517-0170
PO BOX 171, BANCROFT, IA 50517-0171
PO BOX 172, BANCROFT, IA 50517-0172
PO BOX 173, BANCROFT, IA 50517-0173
PO BOX 174, BANCROFT, IA 50517-0174
PO BOX 175, BANCROFT, IA 50517-0175
PO BOX 176, BANCROFT, IA 50517-0176
PO BOX 177, BANCROFT, IA 50517-0177
PO BOX 178, BANCROFT, IA 50517-0178
PO BOX 179, BANCROFT, IA 50517-0179
PO BOX 180, BANCROFT, IA 50517-0180
PO BOX 181, BANCROFT, IA 50517-0181
PO BOX 182, BANCROFT, IA 50517-0182
PO BOX 183, BANCROFT, IA 50517-0183
PO BOX 184, BANCROFT, IA 50517-0184
PO BOX 185, BANCROFT, IA 50517-0185
PO BOX 186, BANCROFT, IA 50517-0186
PO BOX 187, BANCROFT, IA 50517-0187
PO BOX 188, BANCROFT, IA 50517-0188
PO BOX 189, BANCROFT, IA 50517-0189
PO BOX 190, BANCROFT, IA 50517-0190
PO BOX 191, BANCROFT, IA 50517-0191
PO BOX 192, BANCROFT, IA 50517-0192
PO BOX 193, BANCROFT, IA 50517-0193
PO BOX 194, BANCROFT, IA 50517-0194
PO BOX 195, BANCROFT, IA 50517-0195
PO BOX 196, BANCROFT, IA 50517-0196
PO BOX 197, BANCROFT, IA 50517-0197
PO BOX 198, BANCROFT, IA 50517-0198
PO BOX 199, BANCROFT, IA 50517-0199
PO BOX 200, BANCROFT, IA 50517-0200
PO BOX 201, BANCROFT, IA 50517-0201
PO BOX 202, BANCROFT, IA 50517-0202
PO BOX 203, BANCROFT, IA 50517-0203
PO BOX 204, BANCROFT, IA 50517-0204
PO BOX 205, BANCROFT, IA 50517-0205
PO BOX 206, BANCROFT, IA 50517-0206
PO BOX 207, BANCROFT, IA 50517-0207
PO BOX 208, BANCROFT, IA 50517-0208
PO BOX 209, BANCROFT, IA 50517-0209
PO BOX 210, BANCROFT, IA 50517-0210
PO BOX 211, BANCROFT, IA 50517-0211
Add new comment