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 101, CLEARFIELD, PA 16830-0101
PO BOX 102, CLEARFIELD, PA 16830-0102
PO BOX 103, CLEARFIELD, PA 16830-0103
PO BOX 104, CLEARFIELD, PA 16830-0104
PO BOX 105, CLEARFIELD, PA 16830-0105
PO BOX 106, CLEARFIELD, PA 16830-0106
PO BOX 107, CLEARFIELD, PA 16830-0107
PO BOX 108, CLEARFIELD, PA 16830-0108
PO BOX 109, CLEARFIELD, PA 16830-0109
PO BOX 110, CLEARFIELD, PA 16830-0110
PO BOX 111, CLEARFIELD, PA 16830-0111
PO BOX 112, CLEARFIELD, PA 16830-0112
PO BOX 113, CLEARFIELD, PA 16830-0113
PO BOX 114, CLEARFIELD, PA 16830-0114
PO BOX 115, CLEARFIELD, PA 16830-0115
PO BOX 116, CLEARFIELD, PA 16830-0116
PO BOX 117, CLEARFIELD, PA 16830-0117
PO BOX 118, CLEARFIELD, PA 16830-0118
PO BOX 119, CLEARFIELD, PA 16830-0119
PO BOX 120, CLEARFIELD, PA 16830-0120
PO BOX 121, CLEARFIELD, PA 16830-0121
PO BOX 122, CLEARFIELD, PA 16830-0122
PO BOX 123, CLEARFIELD, PA 16830-0123
PO BOX 124, CLEARFIELD, PA 16830-0124
PO BOX 125, CLEARFIELD, PA 16830-0125
PO BOX 126, CLEARFIELD, PA 16830-0126
PO BOX 127, CLEARFIELD, PA 16830-0127
PO BOX 128, CLEARFIELD, PA 16830-0128
PO BOX 129, CLEARFIELD, PA 16830-0129
PO BOX 130, CLEARFIELD, PA 16830-0130
PO BOX 131, CLEARFIELD, PA 16830-0131
PO BOX 132, CLEARFIELD, PA 16830-0132
PO BOX 133, CLEARFIELD, PA 16830-0133
PO BOX 134, CLEARFIELD, PA 16830-0134
PO BOX 135, CLEARFIELD, PA 16830-0135
PO BOX 136, CLEARFIELD, PA 16830-0136
PO BOX 137, CLEARFIELD, PA 16830-0137
PO BOX 138, CLEARFIELD, PA 16830-0138
PO BOX 139, CLEARFIELD, PA 16830-0139
PO BOX 140, CLEARFIELD, PA 16830-0140
PO BOX 141, CLEARFIELD, PA 16830-0141
PO BOX 142, CLEARFIELD, PA 16830-0142
PO BOX 143, CLEARFIELD, PA 16830-0143
PO BOX 144, CLEARFIELD, PA 16830-0144
PO BOX 145, CLEARFIELD, PA 16830-0145
PO BOX 146, CLEARFIELD, PA 16830-0146
PO BOX 147, CLEARFIELD, PA 16830-0147
PO BOX 148, CLEARFIELD, PA 16830-0148
PO BOX 149, CLEARFIELD, PA 16830-0149
PO BOX 150, CLEARFIELD, PA 16830-0150
PO BOX 151, CLEARFIELD, PA 16830-0151
PO BOX 152, CLEARFIELD, PA 16830-0152
PO BOX 153, CLEARFIELD, PA 16830-0153
PO BOX 154, CLEARFIELD, PA 16830-0154
PO BOX 155, CLEARFIELD, PA 16830-0155
PO BOX 156, CLEARFIELD, PA 16830-0156
PO BOX 157, CLEARFIELD, PA 16830-0157
PO BOX 158, CLEARFIELD, PA 16830-0158
PO BOX 159, CLEARFIELD, PA 16830-0159
PO BOX 160, CLEARFIELD, PA 16830-0160
PO BOX 161, CLEARFIELD, PA 16830-0161
PO BOX 162, CLEARFIELD, PA 16830-0162
PO BOX 163, CLEARFIELD, PA 16830-0163
PO BOX 164, CLEARFIELD, PA 16830-0164
PO BOX 165, CLEARFIELD, PA 16830-0165
PO BOX 166, CLEARFIELD, PA 16830-0166
PO BOX 167, CLEARFIELD, PA 16830-0167
PO BOX 168, CLEARFIELD, PA 16830-0168
PO BOX 169, CLEARFIELD, PA 16830-0169
PO BOX 170, CLEARFIELD, PA 16830-0170
PO BOX 171, CLEARFIELD, PA 16830-0171
PO BOX 172, CLEARFIELD, PA 16830-0172
PO BOX 173, CLEARFIELD, PA 16830-0173
PO BOX 174, CLEARFIELD, PA 16830-0174
PO BOX 175, CLEARFIELD, PA 16830-0175
PO BOX 176, CLEARFIELD, PA 16830-0176
PO BOX 177, CLEARFIELD, PA 16830-0177
PO BOX 178, CLEARFIELD, PA 16830-0178
PO BOX 179, CLEARFIELD, PA 16830-0179
PO BOX 180, CLEARFIELD, PA 16830-0180
PO BOX 181, CLEARFIELD, PA 16830-0181
PO BOX 182, CLEARFIELD, PA 16830-0182
PO BOX 183, CLEARFIELD, PA 16830-0183
PO BOX 184, CLEARFIELD, PA 16830-0184
PO BOX 185, CLEARFIELD, PA 16830-0185
PO BOX 186, CLEARFIELD, PA 16830-0186
PO BOX 187, CLEARFIELD, PA 16830-0187
PO BOX 188, CLEARFIELD, PA 16830-0188
PO BOX 189, CLEARFIELD, PA 16830-0189
PO BOX 190, CLEARFIELD, PA 16830-0190
PO BOX 191, CLEARFIELD, PA 16830-0191
PO BOX 192, CLEARFIELD, PA 16830-0192
PO BOX 193, CLEARFIELD, PA 16830-0193
PO BOX 194, CLEARFIELD, PA 16830-0194
PO BOX 195, CLEARFIELD, PA 16830-0195
PO BOX 196, CLEARFIELD, PA 16830-0196
PO BOX 197, CLEARFIELD, PA 16830-0197
PO BOX 198, CLEARFIELD, PA 16830-0198
PO BOX 199, CLEARFIELD, PA 16830-0199
PO BOX 200, CLEARFIELD, PA 16830-0200
PO BOX 201, CLEARFIELD, PA 16830-0201
PO BOX 202, CLEARFIELD, PA 16830-0202
PO BOX 203, CLEARFIELD, PA 16830-0203
PO BOX 204, CLEARFIELD, PA 16830-0204
PO BOX 205, CLEARFIELD, PA 16830-0205
PO BOX 206, CLEARFIELD, PA 16830-0206
PO BOX 207, CLEARFIELD, PA 16830-0207
PO BOX 208, CLEARFIELD, PA 16830-0208
PO BOX 209, CLEARFIELD, PA 16830-0209
PO BOX 210, CLEARFIELD, PA 16830-0210
PO BOX 211, CLEARFIELD, PA 16830-0211
PO BOX 212, CLEARFIELD, PA 16830-0212
PO BOX 213, CLEARFIELD, PA 16830-0213
PO BOX 214, CLEARFIELD, PA 16830-0214
PO BOX 215, CLEARFIELD, PA 16830-0215
PO BOX 216, CLEARFIELD, PA 16830-0216
PO BOX 217, CLEARFIELD, PA 16830-0217
PO BOX 218, CLEARFIELD, PA 16830-0218
PO BOX 219, CLEARFIELD, PA 16830-0219
PO BOX 220, CLEARFIELD, PA 16830-0220
PO BOX 221, CLEARFIELD, PA 16830-0221
PO BOX 222, CLEARFIELD, PA 16830-0222
PO BOX 223, CLEARFIELD, PA 16830-0223
PO BOX 224, CLEARFIELD, PA 16830-0224
PO BOX 225, CLEARFIELD, PA 16830-0225
PO BOX 226, CLEARFIELD, PA 16830-0226
PO BOX 227, CLEARFIELD, PA 16830-0227
PO BOX 228, CLEARFIELD, PA 16830-0228
PO BOX 229, CLEARFIELD, PA 16830-0229
PO BOX 230, CLEARFIELD, PA 16830-0230
PO BOX 231, CLEARFIELD, PA 16830-0231
PO BOX 232, CLEARFIELD, PA 16830-0232
PO BOX 233, CLEARFIELD, PA 16830-0233
PO BOX 234, CLEARFIELD, PA 16830-0234
PO BOX 235, CLEARFIELD, PA 16830-0235
PO BOX 236, CLEARFIELD, PA 16830-0236
PO BOX 237, CLEARFIELD, PA 16830-0237
PO BOX 238, CLEARFIELD, PA 16830-0238
PO BOX 239, CLEARFIELD, PA 16830-0239
PO BOX 240, CLEARFIELD, PA 16830-0240
PO BOX 241, CLEARFIELD, PA 16830-0241
PO BOX 242, CLEARFIELD, PA 16830-0242
PO BOX 243, CLEARFIELD, PA 16830-0243
PO BOX 244, CLEARFIELD, PA 16830-0244
PO BOX 245, CLEARFIELD, PA 16830-0245
PO BOX 246, CLEARFIELD, PA 16830-0246
PO BOX 247, CLEARFIELD, PA 16830-0247
PO BOX 248, CLEARFIELD, PA 16830-0248
PO BOX 249, CLEARFIELD, PA 16830-0249
PO BOX 250, CLEARFIELD, PA 16830-0250
PO BOX 251, CLEARFIELD, PA 16830-0251
PO BOX 252, CLEARFIELD, PA 16830-0252
PO BOX 253, CLEARFIELD, PA 16830-0253
PO BOX 254, CLEARFIELD, PA 16830-0254
PO BOX 255, CLEARFIELD, PA 16830-0255
PO BOX 256, CLEARFIELD, PA 16830-0256
PO BOX 257, CLEARFIELD, PA 16830-0257
PO BOX 258, CLEARFIELD, PA 16830-0258
PO BOX 259, CLEARFIELD, PA 16830-0259
PO BOX 260, CLEARFIELD, PA 16830-0260
PO BOX 261, CLEARFIELD, PA 16830-0261
PO BOX 262, CLEARFIELD, PA 16830-0262
PO BOX 263, CLEARFIELD, PA 16830-0263
PO BOX 264, CLEARFIELD, PA 16830-0264
PO BOX 265, CLEARFIELD, PA 16830-0265
PO BOX 266, CLEARFIELD, PA 16830-0266
PO BOX 267, CLEARFIELD, PA 16830-0267
PO BOX 268, CLEARFIELD, PA 16830-0268
PO BOX 269, CLEARFIELD, PA 16830-0269
PO BOX 270, CLEARFIELD, PA 16830-0270
PO BOX 271, CLEARFIELD, PA 16830-0271
PO BOX 272, CLEARFIELD, PA 16830-0272
PO BOX 273, CLEARFIELD, PA 16830-0273
PO BOX 274, CLEARFIELD, PA 16830-0274
PO BOX 275, CLEARFIELD, PA 16830-0275
PO BOX 276, CLEARFIELD, PA 16830-0276
PO BOX 277, CLEARFIELD, PA 16830-0277
PO BOX 278, CLEARFIELD, PA 16830-0278
PO BOX 279, CLEARFIELD, PA 16830-0279
PO BOX 280, CLEARFIELD, PA 16830-0280
PO BOX 281, CLEARFIELD, PA 16830-0281
PO BOX 282, CLEARFIELD, PA 16830-0282
PO BOX 283, CLEARFIELD, PA 16830-0283
PO BOX 284, CLEARFIELD, PA 16830-0284
PO BOX 285, CLEARFIELD, PA 16830-0285
PO BOX 286, CLEARFIELD, PA 16830-0286
PO BOX 287, CLEARFIELD, PA 16830-0287
PO BOX 288, CLEARFIELD, PA 16830-0288
PO BOX 289, CLEARFIELD, PA 16830-0289
PO BOX 290, CLEARFIELD, PA 16830-0290
PO BOX 291, CLEARFIELD, PA 16830-0291
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