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, EDGEWOOD, IA 52042-0001
PO BOX 2, EDGEWOOD, IA 52042-0002
PO BOX 3, EDGEWOOD, IA 52042-0003
PO BOX 4, EDGEWOOD, IA 52042-0004
PO BOX 5, EDGEWOOD, IA 52042-0005
PO BOX 6, EDGEWOOD, IA 52042-0006
PO BOX 7, EDGEWOOD, IA 52042-0007
PO BOX 8, EDGEWOOD, IA 52042-0008
PO BOX 9, EDGEWOOD, IA 52042-0009
PO BOX 10, EDGEWOOD, IA 52042-0010
PO BOX 11, EDGEWOOD, IA 52042-0011
PO BOX 12, EDGEWOOD, IA 52042-0012
PO BOX 13, EDGEWOOD, IA 52042-0013
PO BOX 14, EDGEWOOD, IA 52042-0014
PO BOX 15, EDGEWOOD, IA 52042-0015
PO BOX 16, EDGEWOOD, IA 52042-0016
PO BOX 17, EDGEWOOD, IA 52042-0017
PO BOX 18, EDGEWOOD, IA 52042-0018
PO BOX 19, EDGEWOOD, IA 52042-0019
PO BOX 20, EDGEWOOD, IA 52042-0020
PO BOX 21, EDGEWOOD, IA 52042-0021
PO BOX 22, EDGEWOOD, IA 52042-0022
PO BOX 23, EDGEWOOD, IA 52042-0023
PO BOX 24, EDGEWOOD, IA 52042-0024
PO BOX 25, EDGEWOOD, IA 52042-0025
PO BOX 26, EDGEWOOD, IA 52042-0026
PO BOX 27, EDGEWOOD, IA 52042-0027
PO BOX 28, EDGEWOOD, IA 52042-0028
PO BOX 29, EDGEWOOD, IA 52042-0029
PO BOX 30, EDGEWOOD, IA 52042-0030
PO BOX 31, EDGEWOOD, IA 52042-0031
PO BOX 32, EDGEWOOD, IA 52042-0032
PO BOX 33, EDGEWOOD, IA 52042-0033
PO BOX 34, EDGEWOOD, IA 52042-0034
PO BOX 35, EDGEWOOD, IA 52042-0035
PO BOX 36, EDGEWOOD, IA 52042-0036
PO BOX 37, EDGEWOOD, IA 52042-0037
PO BOX 38, EDGEWOOD, IA 52042-0038
PO BOX 39, EDGEWOOD, IA 52042-0039
PO BOX 40, EDGEWOOD, IA 52042-0040
PO BOX 41, EDGEWOOD, IA 52042-0041
PO BOX 42, EDGEWOOD, IA 52042-0042
PO BOX 43, EDGEWOOD, IA 52042-0043
PO BOX 44, EDGEWOOD, IA 52042-0044
PO BOX 45, EDGEWOOD, IA 52042-0045
PO BOX 46, EDGEWOOD, IA 52042-0046
PO BOX 47, EDGEWOOD, IA 52042-0047
PO BOX 48, EDGEWOOD, IA 52042-0048
PO BOX 49, EDGEWOOD, IA 52042-0049
PO BOX 50, EDGEWOOD, IA 52042-0050
PO BOX 51, EDGEWOOD, IA 52042-0051
PO BOX 52, EDGEWOOD, IA 52042-0052
PO BOX 53, EDGEWOOD, IA 52042-0053
PO BOX 54, EDGEWOOD, IA 52042-0054
PO BOX 55, EDGEWOOD, IA 52042-0055
PO BOX 56, EDGEWOOD, IA 52042-0056
PO BOX 57, EDGEWOOD, IA 52042-0057
PO BOX 58, EDGEWOOD, IA 52042-0058
PO BOX 59, EDGEWOOD, IA 52042-0059
PO BOX 60, EDGEWOOD, IA 52042-0060
PO BOX 61, EDGEWOOD, IA 52042-0061
PO BOX 62, EDGEWOOD, IA 52042-0062
PO BOX 63, EDGEWOOD, IA 52042-0063
PO BOX 64, EDGEWOOD, IA 52042-0064
PO BOX 65, EDGEWOOD, IA 52042-0065
PO BOX 66, EDGEWOOD, IA 52042-0066
PO BOX 67, EDGEWOOD, IA 52042-0067
PO BOX 68, EDGEWOOD, IA 52042-0068
PO BOX 69, EDGEWOOD, IA 52042-0069
PO BOX 70, EDGEWOOD, IA 52042-0070
PO BOX 71, EDGEWOOD, IA 52042-0071
PO BOX 72, EDGEWOOD, IA 52042-0072
PO BOX 73, EDGEWOOD, IA 52042-0073
PO BOX 74, EDGEWOOD, IA 52042-0074
PO BOX 75, EDGEWOOD, IA 52042-0075
PO BOX 76, EDGEWOOD, IA 52042-0076
PO BOX 77, EDGEWOOD, IA 52042-0077
PO BOX 78, EDGEWOOD, IA 52042-0078
PO BOX 79, EDGEWOOD, IA 52042-0079
PO BOX 80, EDGEWOOD, IA 52042-0080
PO BOX 81, EDGEWOOD, IA 52042-0081
PO BOX 82, EDGEWOOD, IA 52042-0082
PO BOX 83, EDGEWOOD, IA 52042-0083
PO BOX 84, EDGEWOOD, IA 52042-0084
PO BOX 85, EDGEWOOD, IA 52042-0085
PO BOX 86, EDGEWOOD, IA 52042-0086
PO BOX 87, EDGEWOOD, IA 52042-0087
PO BOX 88, EDGEWOOD, IA 52042-0088
PO BOX 89, EDGEWOOD, IA 52042-0089
PO BOX 90, EDGEWOOD, IA 52042-0090
PO BOX 91, EDGEWOOD, IA 52042-0091
PO BOX 92, EDGEWOOD, IA 52042-0092
PO BOX 93, EDGEWOOD, IA 52042-0093
PO BOX 94, EDGEWOOD, IA 52042-0094
PO BOX 95, EDGEWOOD, IA 52042-0095
PO BOX 96, EDGEWOOD, IA 52042-0096
PO BOX 97, EDGEWOOD, IA 52042-0097
PO BOX 98, EDGEWOOD, IA 52042-0098
PO BOX 99, EDGEWOOD, IA 52042-0099
PO BOX 100, EDGEWOOD, IA 52042-0100
PO BOX 101, EDGEWOOD, IA 52042-0101
PO BOX 102, EDGEWOOD, IA 52042-0102
PO BOX 103, EDGEWOOD, IA 52042-0103
PO BOX 104, EDGEWOOD, IA 52042-0104
PO BOX 105, EDGEWOOD, IA 52042-0105
PO BOX 106, EDGEWOOD, IA 52042-0106
PO BOX 107, EDGEWOOD, IA 52042-0107
PO BOX 108, EDGEWOOD, IA 52042-0108
PO BOX 109, EDGEWOOD, IA 52042-0109
PO BOX 110, EDGEWOOD, IA 52042-0110
PO BOX 111, EDGEWOOD, IA 52042-0111
PO BOX 112, EDGEWOOD, IA 52042-0112
PO BOX 113, EDGEWOOD, IA 52042-0113
PO BOX 114, EDGEWOOD, IA 52042-0114
PO BOX 115, EDGEWOOD, IA 52042-0115
PO BOX 116, EDGEWOOD, IA 52042-0116
PO BOX 117, EDGEWOOD, IA 52042-0117
PO BOX 118, EDGEWOOD, IA 52042-0118
PO BOX 119, EDGEWOOD, IA 52042-0119
PO BOX 120, EDGEWOOD, IA 52042-0120
PO BOX 121, EDGEWOOD, IA 52042-0121
PO BOX 122, EDGEWOOD, IA 52042-0122
PO BOX 123, EDGEWOOD, IA 52042-0123
PO BOX 124, EDGEWOOD, IA 52042-0124
PO BOX 125, EDGEWOOD, IA 52042-0125
PO BOX 126, EDGEWOOD, IA 52042-0126
PO BOX 127, EDGEWOOD, IA 52042-0127
PO BOX 128, EDGEWOOD, IA 52042-0128
PO BOX 129, EDGEWOOD, IA 52042-0129
PO BOX 130, EDGEWOOD, IA 52042-0130
PO BOX 131, EDGEWOOD, IA 52042-0131
PO BOX 132, EDGEWOOD, IA 52042-0132
PO BOX 133, EDGEWOOD, IA 52042-0133
PO BOX 134, EDGEWOOD, IA 52042-0134
PO BOX 135, EDGEWOOD, IA 52042-0135
PO BOX 136, EDGEWOOD, IA 52042-0136
PO BOX 137, EDGEWOOD, IA 52042-0137
PO BOX 138, EDGEWOOD, IA 52042-0138
PO BOX 139, EDGEWOOD, IA 52042-0139
PO BOX 140, EDGEWOOD, IA 52042-0140
PO BOX 141, EDGEWOOD, IA 52042-0141
PO BOX 142, EDGEWOOD, IA 52042-0142
PO BOX 143, EDGEWOOD, IA 52042-0143
PO BOX 144, EDGEWOOD, IA 52042-0144
PO BOX 145, EDGEWOOD, IA 52042-0145
PO BOX 146, EDGEWOOD, IA 52042-0146
PO BOX 147, EDGEWOOD, IA 52042-0147
PO BOX 148, EDGEWOOD, IA 52042-0148
PO BOX 149, EDGEWOOD, IA 52042-0149
PO BOX 150, EDGEWOOD, IA 52042-0150
PO BOX 151, EDGEWOOD, IA 52042-0151
PO BOX 152, EDGEWOOD, IA 52042-0152
PO BOX 153, EDGEWOOD, IA 52042-0153
PO BOX 154, EDGEWOOD, IA 52042-0154
PO BOX 155, EDGEWOOD, IA 52042-0155
PO BOX 156, EDGEWOOD, IA 52042-0156
PO BOX 157, EDGEWOOD, IA 52042-0157
PO BOX 158, EDGEWOOD, IA 52042-0158
PO BOX 159, EDGEWOOD, IA 52042-0159
PO BOX 160, EDGEWOOD, IA 52042-0160
PO BOX 161, EDGEWOOD, IA 52042-0161
PO BOX 162, EDGEWOOD, IA 52042-0162
PO BOX 163, EDGEWOOD, IA 52042-0163
PO BOX 164, EDGEWOOD, IA 52042-0164
PO BOX 165, EDGEWOOD, IA 52042-0165
PO BOX 166, EDGEWOOD, IA 52042-0166
PO BOX 167, EDGEWOOD, IA 52042-0167
PO BOX 168, EDGEWOOD, IA 52042-0168
PO BOX 169, EDGEWOOD, IA 52042-0169
PO BOX 170, EDGEWOOD, IA 52042-0170
PO BOX 171, EDGEWOOD, IA 52042-0171
PO BOX 172, EDGEWOOD, IA 52042-0172
PO BOX 173, EDGEWOOD, IA 52042-0173
PO BOX 174, EDGEWOOD, IA 52042-0174
PO BOX 175, EDGEWOOD, IA 52042-0175
PO BOX 176, EDGEWOOD, IA 52042-0176
PO BOX 177, EDGEWOOD, IA 52042-0177
PO BOX 178, EDGEWOOD, IA 52042-0178
PO BOX 179, EDGEWOOD, IA 52042-0179
PO BOX 180, EDGEWOOD, IA 52042-0180
PO BOX 181, EDGEWOOD, IA 52042-0181
PO BOX 182, EDGEWOOD, IA 52042-0182
PO BOX 183, EDGEWOOD, IA 52042-0183
PO BOX 184, EDGEWOOD, IA 52042-0184
PO BOX 185, EDGEWOOD, IA 52042-0185
PO BOX 186, EDGEWOOD, IA 52042-0186
PO BOX 187, EDGEWOOD, IA 52042-0187
PO BOX 188, EDGEWOOD, IA 52042-0188
PO BOX 189, EDGEWOOD, IA 52042-0189
PO BOX 190, EDGEWOOD, IA 52042-0190
PO BOX 191, EDGEWOOD, IA 52042-0191
PO BOX 192, EDGEWOOD, IA 52042-0192
PO BOX 193, EDGEWOOD, IA 52042-0193
PO BOX 194, EDGEWOOD, IA 52042-0194
PO BOX 195, EDGEWOOD, IA 52042-0195
PO BOX 196, EDGEWOOD, IA 52042-0196
PO BOX 197, EDGEWOOD, IA 52042-0197
PO BOX 198, EDGEWOOD, IA 52042-0198
PO BOX 199, EDGEWOOD, IA 52042-0199
PO BOX 200, EDGEWOOD, IA 52042-0200
PO BOX 201, EDGEWOOD, IA 52042-0201
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