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 35, NEAVITT, MD 21652-0035
PO BOX 36, NEAVITT, MD 21652-0036
PO BOX 37, NEAVITT, MD 21652-0037
PO BOX 38, NEAVITT, MD 21652-0038
PO BOX 39, NEAVITT, MD 21652-0039
PO BOX 40, NEAVITT, MD 21652-0040
PO BOX 41, NEAVITT, MD 21652-0041
PO BOX 42, NEAVITT, MD 21652-0042
PO BOX 43, NEAVITT, MD 21652-0043
PO BOX 44, NEAVITT, MD 21652-0044
PO BOX 45, NEAVITT, MD 21652-0045
PO BOX 46, NEAVITT, MD 21652-0046
PO BOX 47, NEAVITT, MD 21652-0047
PO BOX 48, NEAVITT, MD 21652-0048
PO BOX 49, NEAVITT, MD 21652-0049
PO BOX 50, NEAVITT, MD 21652-0050
PO BOX 51, NEAVITT, MD 21652-0051
PO BOX 52, NEAVITT, MD 21652-0052
PO BOX 53, NEAVITT, MD 21652-0053
PO BOX 54, NEAVITT, MD 21652-0054
PO BOX 55, NEAVITT, MD 21652-0055
PO BOX 56, NEAVITT, MD 21652-0056
PO BOX 57, NEAVITT, MD 21652-0057
PO BOX 58, NEAVITT, MD 21652-0058
PO BOX 59, NEAVITT, MD 21652-0059
PO BOX 60, NEAVITT, MD 21652-0060
PO BOX 61, NEAVITT, MD 21652-0061
PO BOX 62, NEAVITT, MD 21652-0062
PO BOX 63, NEAVITT, MD 21652-0063
PO BOX 64, NEAVITT, MD 21652-0064
PO BOX 65, NEAVITT, MD 21652-0065
PO BOX 66, NEAVITT, MD 21652-0066
PO BOX 67, NEAVITT, MD 21652-0067
PO BOX 68, NEAVITT, MD 21652-0068
PO BOX 69, NEAVITT, MD 21652-0069
PO BOX 70, NEAVITT, MD 21652-0070
PO BOX 71, NEAVITT, MD 21652-0071
PO BOX 72, NEAVITT, MD 21652-0072
PO BOX 73, NEAVITT, MD 21652-0073
PO BOX 74, NEAVITT, MD 21652-0074
PO BOX 75, NEAVITT, MD 21652-0075
PO BOX 76, NEAVITT, MD 21652-0076
PO BOX 77, NEAVITT, MD 21652-0077
PO BOX 78, NEAVITT, MD 21652-0078
PO BOX 79, NEAVITT, MD 21652-0079
PO BOX 80, NEAVITT, MD 21652-0080
PO BOX 81, NEAVITT, MD 21652-0081
PO BOX 82, NEAVITT, MD 21652-0082
PO BOX 83, NEAVITT, MD 21652-0083
PO BOX 84, NEAVITT, MD 21652-0084
PO BOX 85, NEAVITT, MD 21652-0085
PO BOX 86, NEAVITT, MD 21652-0086
PO BOX 87, NEAVITT, MD 21652-0087
PO BOX 88, NEAVITT, MD 21652-0088
PO BOX 89, NEAVITT, MD 21652-0089
PO BOX 90, NEAVITT, MD 21652-0090
PO BOX 91, NEAVITT, MD 21652-0091
PO BOX 92, NEAVITT, MD 21652-0092
PO BOX 93, NEAVITT, MD 21652-0093
PO BOX 94, NEAVITT, MD 21652-0094
PO BOX 95, NEAVITT, MD 21652-0095
PO BOX 96, NEAVITT, MD 21652-0096
PO BOX 97, NEAVITT, MD 21652-0097
PO BOX 98, NEAVITT, MD 21652-0098
PO BOX 99, NEAVITT, MD 21652-0099
PO BOX 100, NEAVITT, MD 21652-0100
PO BOX 101, NEAVITT, MD 21652-0101
PO BOX 102, NEAVITT, MD 21652-0102
PO BOX 103, NEAVITT, MD 21652-0103
PO BOX 104, NEAVITT, MD 21652-0104
PO BOX 105, NEAVITT, MD 21652-0105
PO BOX 106, NEAVITT, MD 21652-0106
PO BOX 107, NEAVITT, MD 21652-0107
PO BOX 108, NEAVITT, MD 21652-0108
PO BOX 109, NEAVITT, MD 21652-0109
PO BOX 110, NEAVITT, MD 21652-0110
PO BOX 111, NEAVITT, MD 21652-0111
PO BOX 112, NEAVITT, MD 21652-0112
PO BOX 113, NEAVITT, MD 21652-0113
PO BOX 114, NEAVITT, MD 21652-0114
PO BOX 115, NEAVITT, MD 21652-0115
PO BOX 116, NEAVITT, MD 21652-0116
PO BOX 117, NEAVITT, MD 21652-0117
PO BOX 118, NEAVITT, MD 21652-0118
PO BOX 119, NEAVITT, MD 21652-0119
PO BOX 120, NEAVITT, MD 21652-0120
PO BOX 121, NEAVITT, MD 21652-0121
PO BOX 122, NEAVITT, MD 21652-0122
PO BOX 123, NEAVITT, MD 21652-0123
PO BOX 124, NEAVITT, MD 21652-0124
PO BOX 125, NEAVITT, MD 21652-0125
PO BOX 126, NEAVITT, MD 21652-0126
PO BOX 127, NEAVITT, MD 21652-0127
PO BOX 128, NEAVITT, MD 21652-0128
PO BOX 129, NEAVITT, MD 21652-0129
PO BOX 130, NEAVITT, MD 21652-0130
PO BOX 131, NEAVITT, MD 21652-0131
PO BOX 132, NEAVITT, MD 21652-0132
PO BOX 133, NEAVITT, MD 21652-0133
PO BOX 134, NEAVITT, MD 21652-0134
PO BOX 135, NEAVITT, MD 21652-0135
PO BOX 136, NEAVITT, MD 21652-0136
PO BOX 137, NEAVITT, MD 21652-0137
PO BOX 138, NEAVITT, MD 21652-0138
PO BOX 139, NEAVITT, MD 21652-0139
PO BOX 140, NEAVITT, MD 21652-0140
PO BOX 141, NEAVITT, MD 21652-0141
PO BOX 142, NEAVITT, MD 21652-0142
PO BOX 143, NEAVITT, MD 21652-0143
PO BOX 144, NEAVITT, MD 21652-0144
PO BOX 145, NEAVITT, MD 21652-0145
PO BOX 146, NEAVITT, MD 21652-0146
PO BOX 147, NEAVITT, MD 21652-0147
PO BOX 148, NEAVITT, MD 21652-0148
PO BOX 149, NEAVITT, MD 21652-0149
PO BOX 150, NEAVITT, MD 21652-0150
PO BOX 151, NEAVITT, MD 21652-0151
PO BOX 152, NEAVITT, MD 21652-0152
PO BOX 153, NEAVITT, MD 21652-0153
PO BOX 154, NEAVITT, MD 21652-0154
PO BOX 155, NEAVITT, MD 21652-0155
PO BOX 156, NEAVITT, MD 21652-0156
PO BOX 157, NEAVITT, MD 21652-0157
PO BOX 158, NEAVITT, MD 21652-0158
PO BOX 159, NEAVITT, MD 21652-0159
PO BOX 160, NEAVITT, MD 21652-0160
PO BOX 161, NEAVITT, MD 21652-0161
PO BOX 162, NEAVITT, MD 21652-0162
PO BOX 163, NEAVITT, MD 21652-0163
PO BOX 164, NEAVITT, MD 21652-0164
PO BOX 165, NEAVITT, MD 21652-0165
PO BOX 166, NEAVITT, MD 21652-0166
PO BOX 167, NEAVITT, MD 21652-0167
PO BOX 168, NEAVITT, MD 21652-0168
PO BOX 169, NEAVITT, MD 21652-0169
PO BOX 170, NEAVITT, MD 21652-0170
PO BOX 171, NEAVITT, MD 21652-0171
PO BOX 172, NEAVITT, MD 21652-0172
PO BOX 173, NEAVITT, MD 21652-0173
PO BOX 174, NEAVITT, MD 21652-0174
PO BOX 175, NEAVITT, MD 21652-0175
PO BOX 176, NEAVITT, MD 21652-0176
PO BOX 177, NEAVITT, MD 21652-0177
PO BOX 178, NEAVITT, MD 21652-0178
PO BOX 179, NEAVITT, MD 21652-0179
PO BOX 180, NEAVITT, MD 21652-0180
PO BOX 181, NEAVITT, MD 21652-0181
PO BOX 182, NEAVITT, MD 21652-0182
PO BOX 183, NEAVITT, MD 21652-0183
PO BOX 184, NEAVITT, MD 21652-0184
PO BOX 185, NEAVITT, MD 21652-0185
PO BOX 186, NEAVITT, MD 21652-0186
PO BOX 187, NEAVITT, MD 21652-0187
PO BOX 188, NEAVITT, MD 21652-0188
PO BOX 189, NEAVITT, MD 21652-0189
PO BOX 190, NEAVITT, MD 21652-0190
PO BOX 191, NEAVITT, MD 21652-0191
PO BOX 192, NEAVITT, MD 21652-0192
PO BOX 193, NEAVITT, MD 21652-0193
PO BOX 194, NEAVITT, MD 21652-0194
PO BOX 195, NEAVITT, MD 21652-0195
PO BOX 196, NEAVITT, MD 21652-0196
PO BOX 197, NEAVITT, MD 21652-0197
PO BOX 198, NEAVITT, MD 21652-0198
PO BOX 199, NEAVITT, MD 21652-0199
PO BOX 200, NEAVITT, MD 21652-0200
PO BOX 201, NEAVITT, MD 21652-0201
PO BOX 202, NEAVITT, MD 21652-0202
PO BOX 203, NEAVITT, MD 21652-0203
PO BOX 204, NEAVITT, MD 21652-0204
PO BOX 205, NEAVITT, MD 21652-0205
PO BOX 206, NEAVITT, MD 21652-0206
PO BOX 207, NEAVITT, MD 21652-0207
PO BOX 208, NEAVITT, MD 21652-0208
PO BOX 209, NEAVITT, MD 21652-0209
PO BOX 210, NEAVITT, MD 21652-0210
PO BOX 211, NEAVITT, MD 21652-0211
PO BOX 212, NEAVITT, MD 21652-0212
PO BOX 213, NEAVITT, MD 21652-0213
PO BOX 214, NEAVITT, MD 21652-0214
PO BOX 215, NEAVITT, MD 21652-0215
PO BOX 216, NEAVITT, MD 21652-0216
PO BOX 217, NEAVITT, MD 21652-0217
PO BOX 218, NEAVITT, MD 21652-0218
PO BOX 219, NEAVITT, MD 21652-0219
PO BOX 220, NEAVITT, MD 21652-0220
PO BOX 221, NEAVITT, MD 21652-0221
PO BOX 222, NEAVITT, MD 21652-0222
PO BOX 223, NEAVITT, MD 21652-0223
PO BOX 224, NEAVITT, MD 21652-0224
PO BOX 225, NEAVITT, MD 21652-0225
PO BOX 226, NEAVITT, MD 21652-0226
PO BOX 227, NEAVITT, MD 21652-0227
PO BOX 228, NEAVITT, MD 21652-0228
PO BOX 229, NEAVITT, MD 21652-0229
PO BOX 230, NEAVITT, MD 21652-0230
PO BOX 231, NEAVITT, MD 21652-0231
PO BOX 232, NEAVITT, MD 21652-0232
PO BOX 233, NEAVITT, MD 21652-0233
PO BOX 234, NEAVITT, MD 21652-0234
PO BOX 235, NEAVITT, MD 21652-0235
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