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 121, DICKERSON RUN, PA 15430-0121
PO BOX 122, DICKERSON RUN, PA 15430-0122
PO BOX 123, DICKERSON RUN, PA 15430-0123
PO BOX 124, DICKERSON RUN, PA 15430-0124
PO BOX 125, DICKERSON RUN, PA 15430-0125
PO BOX 126, DICKERSON RUN, PA 15430-0126
PO BOX 127, DICKERSON RUN, PA 15430-0127
PO BOX 128, DICKERSON RUN, PA 15430-0128
PO BOX 129, DICKERSON RUN, PA 15430-0129
PO BOX 130, DICKERSON RUN, PA 15430-0130
PO BOX 131, DICKERSON RUN, PA 15430-0131
PO BOX 132, DICKERSON RUN, PA 15430-0132
PO BOX 133, DICKERSON RUN, PA 15430-0133
PO BOX 134, DICKERSON RUN, PA 15430-0134
PO BOX 135, DICKERSON RUN, PA 15430-0135
PO BOX 136, DICKERSON RUN, PA 15430-0136
PO BOX 137, DICKERSON RUN, PA 15430-0137
PO BOX 138, DICKERSON RUN, PA 15430-0138
PO BOX 139, DICKERSON RUN, PA 15430-0139
PO BOX 140, DICKERSON RUN, PA 15430-0140
PO BOX 141, DICKERSON RUN, PA 15430-0141
PO BOX 142, DICKERSON RUN, PA 15430-0142
PO BOX 143, DICKERSON RUN, PA 15430-0143
PO BOX 144, DICKERSON RUN, PA 15430-0144
PO BOX 145, DICKERSON RUN, PA 15430-0145
PO BOX 146, DICKERSON RUN, PA 15430-0146
PO BOX 147, DICKERSON RUN, PA 15430-0147
PO BOX 148, DICKERSON RUN, PA 15430-0148
PO BOX 149, DICKERSON RUN, PA 15430-0149
PO BOX 150, DICKERSON RUN, PA 15430-0150
PO BOX 151, DICKERSON RUN, PA 15430-0151
PO BOX 152, DICKERSON RUN, PA 15430-0152
PO BOX 153, DICKERSON RUN, PA 15430-0153
PO BOX 154, DICKERSON RUN, PA 15430-0154
PO BOX 155, DICKERSON RUN, PA 15430-0155
PO BOX 156, DICKERSON RUN, PA 15430-0156
PO BOX 157, DICKERSON RUN, PA 15430-0157
PO BOX 158, DICKERSON RUN, PA 15430-0158
PO BOX 159, DICKERSON RUN, PA 15430-0159
PO BOX 160, DICKERSON RUN, PA 15430-0160
PO BOX 161, DICKERSON RUN, PA 15430-0161
PO BOX 162, DICKERSON RUN, PA 15430-0162
PO BOX 163, DICKERSON RUN, PA 15430-0163
PO BOX 164, DICKERSON RUN, PA 15430-0164
PO BOX 165, DICKERSON RUN, PA 15430-0165
PO BOX 166, DICKERSON RUN, PA 15430-0166
PO BOX 167, DICKERSON RUN, PA 15430-0167
PO BOX 168, DICKERSON RUN, PA 15430-0168
PO BOX 169, DICKERSON RUN, PA 15430-0169
PO BOX 170, DICKERSON RUN, PA 15430-0170
PO BOX 171, DICKERSON RUN, PA 15430-0171
PO BOX 172, DICKERSON RUN, PA 15430-0172
PO BOX 173, DICKERSON RUN, PA 15430-0173
PO BOX 174, DICKERSON RUN, PA 15430-0174
PO BOX 175, DICKERSON RUN, PA 15430-0175
PO BOX 176, DICKERSON RUN, PA 15430-0176
PO BOX 177, DICKERSON RUN, PA 15430-0177
PO BOX 178, DICKERSON RUN, PA 15430-0178
PO BOX 179, DICKERSON RUN, PA 15430-0179
PO BOX 180, DICKERSON RUN, PA 15430-0180
PO BOX 181, DICKERSON RUN, PA 15430-0181
PO BOX 182, DICKERSON RUN, PA 15430-0182
PO BOX 183, DICKERSON RUN, PA 15430-0183
PO BOX 184, DICKERSON RUN, PA 15430-0184
PO BOX 185, DICKERSON RUN, PA 15430-0185
PO BOX 186, DICKERSON RUN, PA 15430-0186
PO BOX 187, DICKERSON RUN, PA 15430-0187
PO BOX 188, DICKERSON RUN, PA 15430-0188
PO BOX 189, DICKERSON RUN, PA 15430-0189
PO BOX 190, DICKERSON RUN, PA 15430-0190
PO BOX 191, DICKERSON RUN, PA 15430-0191
PO BOX 192, DICKERSON RUN, PA 15430-0192
PO BOX 193, DICKERSON RUN, PA 15430-0193
PO BOX 194, DICKERSON RUN, PA 15430-0194
PO BOX 195, DICKERSON RUN, PA 15430-0195
PO BOX 196, DICKERSON RUN, PA 15430-0196
PO BOX 197, DICKERSON RUN, PA 15430-0197
PO BOX 198, DICKERSON RUN, PA 15430-0198
PO BOX 199, DICKERSON RUN, PA 15430-0199
PO BOX 200, DICKERSON RUN, PA 15430-0200
PO BOX 201, DICKERSON RUN, PA 15430-0201
PO BOX 202, DICKERSON RUN, PA 15430-0202
PO BOX 203, DICKERSON RUN, PA 15430-0203
PO BOX 204, DICKERSON RUN, PA 15430-0204
PO BOX 205, DICKERSON RUN, PA 15430-0205
PO BOX 206, DICKERSON RUN, PA 15430-0206
PO BOX 207, DICKERSON RUN, PA 15430-0207
PO BOX 208, DICKERSON RUN, PA 15430-0208
PO BOX 209, DICKERSON RUN, PA 15430-0209
PO BOX 210, DICKERSON RUN, PA 15430-0210
PO BOX 211, DICKERSON RUN, PA 15430-0211
PO BOX 212, DICKERSON RUN, PA 15430-0212
PO BOX 213, DICKERSON RUN, PA 15430-0213
PO BOX 214, DICKERSON RUN, PA 15430-0214
PO BOX 215, DICKERSON RUN, PA 15430-0215
PO BOX 216, DICKERSON RUN, PA 15430-0216
PO BOX 217, DICKERSON RUN, PA 15430-0217
PO BOX 218, DICKERSON RUN, PA 15430-0218
PO BOX 219, DICKERSON RUN, PA 15430-0219
PO BOX 220, DICKERSON RUN, PA 15430-0220
PO BOX 221, DICKERSON RUN, PA 15430-0221
PO BOX 222, DICKERSON RUN, PA 15430-0222
PO BOX 223, DICKERSON RUN, PA 15430-0223
PO BOX 224, DICKERSON RUN, PA 15430-0224
PO BOX 225, DICKERSON RUN, PA 15430-0225
PO BOX 226, DICKERSON RUN, PA 15430-0226
PO BOX 227, DICKERSON RUN, PA 15430-0227
PO BOX 228, DICKERSON RUN, PA 15430-0228
PO BOX 229, DICKERSON RUN, PA 15430-0229
PO BOX 230, DICKERSON RUN, PA 15430-0230
PO BOX 231, DICKERSON RUN, PA 15430-0231
PO BOX 232, DICKERSON RUN, PA 15430-0232
PO BOX 233, DICKERSON RUN, PA 15430-0233
PO BOX 234, DICKERSON RUN, PA 15430-0234
PO BOX 235, DICKERSON RUN, PA 15430-0235
PO BOX 236, DICKERSON RUN, PA 15430-0236
PO BOX 237, DICKERSON RUN, PA 15430-0237
PO BOX 238, DICKERSON RUN, PA 15430-0238
PO BOX 239, DICKERSON RUN, PA 15430-0239
PO BOX 240, DICKERSON RUN, PA 15430-0240
PO BOX 241, DICKERSON RUN, PA 15430-0241
PO BOX 242, DICKERSON RUN, PA 15430-0242
PO BOX 243, DICKERSON RUN, PA 15430-0243
PO BOX 244, DICKERSON RUN, PA 15430-0244
PO BOX 245, DICKERSON RUN, PA 15430-0245
PO BOX 246, DICKERSON RUN, PA 15430-0246
PO BOX 247, DICKERSON RUN, PA 15430-0247
PO BOX 248, DICKERSON RUN, PA 15430-0248
PO BOX 249, DICKERSON RUN, PA 15430-0249
PO BOX 250, DICKERSON RUN, PA 15430-0250
PO BOX 251, DICKERSON RUN, PA 15430-0251
PO BOX 252, DICKERSON RUN, PA 15430-0252
PO BOX 253, DICKERSON RUN, PA 15430-0253
PO BOX 254, DICKERSON RUN, PA 15430-0254
PO BOX 255, DICKERSON RUN, PA 15430-0255
PO BOX 256, DICKERSON RUN, PA 15430-0256
PO BOX 257, DICKERSON RUN, PA 15430-0257
PO BOX 258, DICKERSON RUN, PA 15430-0258
PO BOX 259, DICKERSON RUN, PA 15430-0259
PO BOX 260, DICKERSON RUN, PA 15430-0260
PO BOX 261, DICKERSON RUN, PA 15430-0261
PO BOX 262, DICKERSON RUN, PA 15430-0262
PO BOX 263, DICKERSON RUN, PA 15430-0263
PO BOX 264, DICKERSON RUN, PA 15430-0264
PO BOX 265, DICKERSON RUN, PA 15430-0265
PO BOX 266, DICKERSON RUN, PA 15430-0266
PO BOX 267, DICKERSON RUN, PA 15430-0267
PO BOX 268, DICKERSON RUN, PA 15430-0268
PO BOX 269, DICKERSON RUN, PA 15430-0269
PO BOX 270, DICKERSON RUN, PA 15430-0270
PO BOX 271, DICKERSON RUN, PA 15430-0271
PO BOX 272, DICKERSON RUN, PA 15430-0272
PO BOX 273, DICKERSON RUN, PA 15430-0273
PO BOX 274, DICKERSON RUN, PA 15430-0274
PO BOX 275, DICKERSON RUN, PA 15430-0275
PO BOX 276, DICKERSON RUN, PA 15430-0276
PO BOX 277, DICKERSON RUN, PA 15430-0277
PO BOX 278, DICKERSON RUN, PA 15430-0278
PO BOX 279, DICKERSON RUN, PA 15430-0279
PO BOX 280, DICKERSON RUN, PA 15430-0280
PO BOX 281, DICKERSON RUN, PA 15430-0281
PO BOX 282, DICKERSON RUN, PA 15430-0282
PO BOX 283, DICKERSON RUN, PA 15430-0283
PO BOX 284, DICKERSON RUN, PA 15430-0284
PO BOX 285, DICKERSON RUN, PA 15430-0285
PO BOX 286, DICKERSON RUN, PA 15430-0286
PO BOX 287, DICKERSON RUN, PA 15430-0287
PO BOX 288, DICKERSON RUN, PA 15430-0288
PO BOX 289, DICKERSON RUN, PA 15430-0289
PO BOX 290, DICKERSON RUN, PA 15430-0290
PO BOX 291, DICKERSON RUN, PA 15430-0291
PO BOX 292, DICKERSON RUN, PA 15430-0292
PO BOX 293, DICKERSON RUN, PA 15430-0293
PO BOX 294, DICKERSON RUN, PA 15430-0294
PO BOX 295, DICKERSON RUN, PA 15430-0295
PO BOX 296, DICKERSON RUN, PA 15430-0296
PO BOX 297, DICKERSON RUN, PA 15430-0297
PO BOX 298, DICKERSON RUN, PA 15430-0298
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