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, DONNELLSON, IA 52625-0001
PO BOX 2, DONNELLSON, IA 52625-0002
PO BOX 3, DONNELLSON, IA 52625-0003
PO BOX 4, DONNELLSON, IA 52625-0004
PO BOX 5, DONNELLSON, IA 52625-0005
PO BOX 6, DONNELLSON, IA 52625-0006
PO BOX 7, DONNELLSON, IA 52625-0007
PO BOX 8, DONNELLSON, IA 52625-0008
PO BOX 9, DONNELLSON, IA 52625-0009
PO BOX 10, DONNELLSON, IA 52625-0010
PO BOX 11, DONNELLSON, IA 52625-0011
PO BOX 12, DONNELLSON, IA 52625-0012
PO BOX 13, DONNELLSON, IA 52625-0013
PO BOX 14, DONNELLSON, IA 52625-0014
PO BOX 15, DONNELLSON, IA 52625-0015
PO BOX 16, DONNELLSON, IA 52625-0016
PO BOX 17, DONNELLSON, IA 52625-0017
PO BOX 18, DONNELLSON, IA 52625-0018
PO BOX 19, DONNELLSON, IA 52625-0019
PO BOX 20, DONNELLSON, IA 52625-0020
PO BOX 21, DONNELLSON, IA 52625-0021
PO BOX 22, DONNELLSON, IA 52625-0022
PO BOX 23, DONNELLSON, IA 52625-0023
PO BOX 24, DONNELLSON, IA 52625-0024
PO BOX 25, DONNELLSON, IA 52625-0025
PO BOX 26, DONNELLSON, IA 52625-0026
PO BOX 27, DONNELLSON, IA 52625-0027
PO BOX 28, DONNELLSON, IA 52625-0028
PO BOX 29, DONNELLSON, IA 52625-0029
PO BOX 30, DONNELLSON, IA 52625-0030
PO BOX 31, DONNELLSON, IA 52625-0031
PO BOX 32, DONNELLSON, IA 52625-0032
PO BOX 33, DONNELLSON, IA 52625-0033
PO BOX 34, DONNELLSON, IA 52625-0034
PO BOX 35, DONNELLSON, IA 52625-0035
PO BOX 36, DONNELLSON, IA 52625-0036
PO BOX 37, DONNELLSON, IA 52625-0037
PO BOX 38, DONNELLSON, IA 52625-0038
PO BOX 39, DONNELLSON, IA 52625-0039
PO BOX 40, DONNELLSON, IA 52625-0040
PO BOX 41, DONNELLSON, IA 52625-0041
PO BOX 42, DONNELLSON, IA 52625-0042
PO BOX 43, DONNELLSON, IA 52625-0043
PO BOX 44, DONNELLSON, IA 52625-0044
PO BOX 45, DONNELLSON, IA 52625-0045
PO BOX 46, DONNELLSON, IA 52625-0046
PO BOX 47, DONNELLSON, IA 52625-0047
PO BOX 48, DONNELLSON, IA 52625-0048
PO BOX 49, DONNELLSON, IA 52625-0049
PO BOX 50, DONNELLSON, IA 52625-0050
PO BOX 51, DONNELLSON, IA 52625-0051
PO BOX 52, DONNELLSON, IA 52625-0052
PO BOX 53, DONNELLSON, IA 52625-0053
PO BOX 54, DONNELLSON, IA 52625-0054
PO BOX 55, DONNELLSON, IA 52625-0055
PO BOX 56, DONNELLSON, IA 52625-0056
PO BOX 57, DONNELLSON, IA 52625-0057
PO BOX 58, DONNELLSON, IA 52625-0058
PO BOX 59, DONNELLSON, IA 52625-0059
PO BOX 60, DONNELLSON, IA 52625-0060
PO BOX 61, DONNELLSON, IA 52625-0061
PO BOX 62, DONNELLSON, IA 52625-0062
PO BOX 63, DONNELLSON, IA 52625-0063
PO BOX 64, DONNELLSON, IA 52625-0064
PO BOX 65, DONNELLSON, IA 52625-0065
PO BOX 66, DONNELLSON, IA 52625-0066
PO BOX 67, DONNELLSON, IA 52625-0067
PO BOX 68, DONNELLSON, IA 52625-0068
PO BOX 69, DONNELLSON, IA 52625-0069
PO BOX 70, DONNELLSON, IA 52625-0070
PO BOX 71, DONNELLSON, IA 52625-0071
PO BOX 72, DONNELLSON, IA 52625-0072
PO BOX 73, DONNELLSON, IA 52625-0073
PO BOX 74, DONNELLSON, IA 52625-0074
PO BOX 75, DONNELLSON, IA 52625-0075
PO BOX 76, DONNELLSON, IA 52625-0076
PO BOX 77, DONNELLSON, IA 52625-0077
PO BOX 78, DONNELLSON, IA 52625-0078
PO BOX 79, DONNELLSON, IA 52625-0079
PO BOX 80, DONNELLSON, IA 52625-0080
PO BOX 81, DONNELLSON, IA 52625-0081
PO BOX 82, DONNELLSON, IA 52625-0082
PO BOX 83, DONNELLSON, IA 52625-0083
PO BOX 84, DONNELLSON, IA 52625-0084
PO BOX 85, DONNELLSON, IA 52625-0085
PO BOX 86, DONNELLSON, IA 52625-0086
PO BOX 87, DONNELLSON, IA 52625-0087
PO BOX 88, DONNELLSON, IA 52625-0088
PO BOX 89, DONNELLSON, IA 52625-0089
PO BOX 90, DONNELLSON, IA 52625-0090
PO BOX 91, DONNELLSON, IA 52625-0091
PO BOX 92, DONNELLSON, IA 52625-0092
PO BOX 93, DONNELLSON, IA 52625-0093
PO BOX 94, DONNELLSON, IA 52625-0094
PO BOX 95, DONNELLSON, IA 52625-0095
PO BOX 96, DONNELLSON, IA 52625-0096
PO BOX 97, DONNELLSON, IA 52625-0097
PO BOX 98, DONNELLSON, IA 52625-0098
PO BOX 99, DONNELLSON, IA 52625-0099
PO BOX 100, DONNELLSON, IA 52625-0100
PO BOX 101, DONNELLSON, IA 52625-0101
PO BOX 102, DONNELLSON, IA 52625-0102
PO BOX 103, DONNELLSON, IA 52625-0103
PO BOX 104, DONNELLSON, IA 52625-0104
PO BOX 105, DONNELLSON, IA 52625-0105
PO BOX 106, DONNELLSON, IA 52625-0106
PO BOX 107, DONNELLSON, IA 52625-0107
PO BOX 108, DONNELLSON, IA 52625-0108
PO BOX 109, DONNELLSON, IA 52625-0109
PO BOX 110, DONNELLSON, IA 52625-0110
PO BOX 111, DONNELLSON, IA 52625-0111
PO BOX 112, DONNELLSON, IA 52625-0112
PO BOX 113, DONNELLSON, IA 52625-0113
PO BOX 114, DONNELLSON, IA 52625-0114
PO BOX 115, DONNELLSON, IA 52625-0115
PO BOX 116, DONNELLSON, IA 52625-0116
PO BOX 117, DONNELLSON, IA 52625-0117
PO BOX 118, DONNELLSON, IA 52625-0118
PO BOX 119, DONNELLSON, IA 52625-0119
PO BOX 120, DONNELLSON, IA 52625-0120
PO BOX 121, DONNELLSON, IA 52625-0121
PO BOX 122, DONNELLSON, IA 52625-0122
PO BOX 123, DONNELLSON, IA 52625-0123
PO BOX 124, DONNELLSON, IA 52625-0124
PO BOX 125, DONNELLSON, IA 52625-0125
PO BOX 126, DONNELLSON, IA 52625-0126
PO BOX 127, DONNELLSON, IA 52625-0127
PO BOX 128, DONNELLSON, IA 52625-0128
PO BOX 129, DONNELLSON, IA 52625-0129
PO BOX 130, DONNELLSON, IA 52625-0130
PO BOX 131, DONNELLSON, IA 52625-0131
PO BOX 132, DONNELLSON, IA 52625-0132
PO BOX 133, DONNELLSON, IA 52625-0133
PO BOX 134, DONNELLSON, IA 52625-0134
PO BOX 135, DONNELLSON, IA 52625-0135
PO BOX 136, DONNELLSON, IA 52625-0136
PO BOX 137, DONNELLSON, IA 52625-0137
PO BOX 138, DONNELLSON, IA 52625-0138
PO BOX 139, DONNELLSON, IA 52625-0139
PO BOX 140, DONNELLSON, IA 52625-0140
PO BOX 141, DONNELLSON, IA 52625-0141
PO BOX 142, DONNELLSON, IA 52625-0142
PO BOX 143, DONNELLSON, IA 52625-0143
PO BOX 144, DONNELLSON, IA 52625-0144
PO BOX 145, DONNELLSON, IA 52625-0145
PO BOX 146, DONNELLSON, IA 52625-0146
PO BOX 147, DONNELLSON, IA 52625-0147
PO BOX 148, DONNELLSON, IA 52625-0148
PO BOX 149, DONNELLSON, IA 52625-0149
PO BOX 150, DONNELLSON, IA 52625-0150
PO BOX 151, DONNELLSON, IA 52625-0151
PO BOX 152, DONNELLSON, IA 52625-0152
PO BOX 153, DONNELLSON, IA 52625-0153
PO BOX 154, DONNELLSON, IA 52625-0154
PO BOX 155, DONNELLSON, IA 52625-0155
PO BOX 156, DONNELLSON, IA 52625-0156
PO BOX 157, DONNELLSON, IA 52625-0157
PO BOX 158, DONNELLSON, IA 52625-0158
PO BOX 159, DONNELLSON, IA 52625-0159
PO BOX 160, DONNELLSON, IA 52625-0160
PO BOX 161, DONNELLSON, IA 52625-0161
PO BOX 162, DONNELLSON, IA 52625-0162
PO BOX 163, DONNELLSON, IA 52625-0163
PO BOX 164, DONNELLSON, IA 52625-0164
PO BOX 165, DONNELLSON, IA 52625-0165
PO BOX 166, DONNELLSON, IA 52625-0166
PO BOX 167, DONNELLSON, IA 52625-0167
PO BOX 168, DONNELLSON, IA 52625-0168
PO BOX 169, DONNELLSON, IA 52625-0169
PO BOX 170, DONNELLSON, IA 52625-0170
PO BOX 171, DONNELLSON, IA 52625-0171
PO BOX 172, DONNELLSON, IA 52625-0172
PO BOX 173, DONNELLSON, IA 52625-0173
PO BOX 174, DONNELLSON, IA 52625-0174
PO BOX 175, DONNELLSON, IA 52625-0175
PO BOX 176, DONNELLSON, IA 52625-0176
PO BOX 177, DONNELLSON, IA 52625-0177
PO BOX 178, DONNELLSON, IA 52625-0178
PO BOX 179, DONNELLSON, IA 52625-0179
PO BOX 180, DONNELLSON, IA 52625-0180
PO BOX 181, DONNELLSON, IA 52625-0181
PO BOX 182, DONNELLSON, IA 52625-0182
PO BOX 183, DONNELLSON, IA 52625-0183
PO BOX 184, DONNELLSON, IA 52625-0184
PO BOX 185, DONNELLSON, IA 52625-0185
PO BOX 186, DONNELLSON, IA 52625-0186
PO BOX 187, DONNELLSON, IA 52625-0187
PO BOX 188, DONNELLSON, IA 52625-0188
PO BOX 189, DONNELLSON, IA 52625-0189
PO BOX 190, DONNELLSON, IA 52625-0190
PO BOX 191, DONNELLSON, IA 52625-0191
PO BOX 192, DONNELLSON, IA 52625-0192
PO BOX 193, DONNELLSON, IA 52625-0193
PO BOX 194, DONNELLSON, IA 52625-0194
PO BOX 195, DONNELLSON, IA 52625-0195
PO BOX 196, DONNELLSON, IA 52625-0196
PO BOX 197, DONNELLSON, IA 52625-0197
PO BOX 198, DONNELLSON, IA 52625-0198
PO BOX 199, DONNELLSON, IA 52625-0199
PO BOX 200, DONNELLSON, IA 52625-0200
PO BOX 201, DONNELLSON, IA 52625-0201
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