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 151, CARRINGTON, ND 58421-0151
PO BOX 152, CARRINGTON, ND 58421-0152
PO BOX 153, CARRINGTON, ND 58421-0153
PO BOX 154, CARRINGTON, ND 58421-0154
PO BOX 155, CARRINGTON, ND 58421-0155
PO BOX 156, CARRINGTON, ND 58421-0156
PO BOX 157, CARRINGTON, ND 58421-0157
PO BOX 158, CARRINGTON, ND 58421-0158
PO BOX 159, CARRINGTON, ND 58421-0159
PO BOX 160, CARRINGTON, ND 58421-0160
PO BOX 161, CARRINGTON, ND 58421-0161
PO BOX 162, CARRINGTON, ND 58421-0162
PO BOX 163, CARRINGTON, ND 58421-0163
PO BOX 164, CARRINGTON, ND 58421-0164
PO BOX 165, CARRINGTON, ND 58421-0165
PO BOX 166, CARRINGTON, ND 58421-0166
PO BOX 167, CARRINGTON, ND 58421-0167
PO BOX 168, CARRINGTON, ND 58421-0168
PO BOX 169, CARRINGTON, ND 58421-0169
PO BOX 170, CARRINGTON, ND 58421-0170
PO BOX 171, CARRINGTON, ND 58421-0171
PO BOX 172, CARRINGTON, ND 58421-0172
PO BOX 173, CARRINGTON, ND 58421-0173
PO BOX 174, CARRINGTON, ND 58421-0174
PO BOX 175, CARRINGTON, ND 58421-0175
PO BOX 176, CARRINGTON, ND 58421-0176
PO BOX 177, CARRINGTON, ND 58421-0177
PO BOX 178, CARRINGTON, ND 58421-0178
PO BOX 179, CARRINGTON, ND 58421-0179
PO BOX 180, CARRINGTON, ND 58421-0180
PO BOX 181, CARRINGTON, ND 58421-0181
PO BOX 182, CARRINGTON, ND 58421-0182
PO BOX 183, CARRINGTON, ND 58421-0183
PO BOX 184, CARRINGTON, ND 58421-0184
PO BOX 185, CARRINGTON, ND 58421-0185
PO BOX 186, CARRINGTON, ND 58421-0186
PO BOX 187, CARRINGTON, ND 58421-0187
PO BOX 188, CARRINGTON, ND 58421-0188
PO BOX 189, CARRINGTON, ND 58421-0189
PO BOX 190, CARRINGTON, ND 58421-0190
PO BOX 191, CARRINGTON, ND 58421-0191
PO BOX 192, CARRINGTON, ND 58421-0192
PO BOX 193, CARRINGTON, ND 58421-0193
PO BOX 194, CARRINGTON, ND 58421-0194
PO BOX 195, CARRINGTON, ND 58421-0195
PO BOX 196, CARRINGTON, ND 58421-0196
PO BOX 197, CARRINGTON, ND 58421-0197
PO BOX 198, CARRINGTON, ND 58421-0198
PO BOX 199, CARRINGTON, ND 58421-0199
PO BOX 200, CARRINGTON, ND 58421-0200
PO BOX 201, CARRINGTON, ND 58421-0201
PO BOX 202, CARRINGTON, ND 58421-0202
PO BOX 203, CARRINGTON, ND 58421-0203
PO BOX 204, CARRINGTON, ND 58421-0204
PO BOX 205, CARRINGTON, ND 58421-0205
PO BOX 206, CARRINGTON, ND 58421-0206
PO BOX 207, CARRINGTON, ND 58421-0207
PO BOX 208, CARRINGTON, ND 58421-0208
PO BOX 209, CARRINGTON, ND 58421-0209
PO BOX 210, CARRINGTON, ND 58421-0210
PO BOX 211, CARRINGTON, ND 58421-0211
PO BOX 212, CARRINGTON, ND 58421-0212
PO BOX 213, CARRINGTON, ND 58421-0213
PO BOX 214, CARRINGTON, ND 58421-0214
PO BOX 215, CARRINGTON, ND 58421-0215
PO BOX 216, CARRINGTON, ND 58421-0216
PO BOX 217, CARRINGTON, ND 58421-0217
PO BOX 218, CARRINGTON, ND 58421-0218
PO BOX 219, CARRINGTON, ND 58421-0219
PO BOX 220, CARRINGTON, ND 58421-0220
PO BOX 221, CARRINGTON, ND 58421-0221
PO BOX 222, CARRINGTON, ND 58421-0222
PO BOX 223, CARRINGTON, ND 58421-0223
PO BOX 224, CARRINGTON, ND 58421-0224
PO BOX 225, CARRINGTON, ND 58421-0225
PO BOX 226, CARRINGTON, ND 58421-0226
PO BOX 227, CARRINGTON, ND 58421-0227
PO BOX 228, CARRINGTON, ND 58421-0228
PO BOX 229, CARRINGTON, ND 58421-0229
PO BOX 230, CARRINGTON, ND 58421-0230
PO BOX 231, CARRINGTON, ND 58421-0231
PO BOX 232, CARRINGTON, ND 58421-0232
PO BOX 233, CARRINGTON, ND 58421-0233
PO BOX 234, CARRINGTON, ND 58421-0234
PO BOX 235, CARRINGTON, ND 58421-0235
PO BOX 236, CARRINGTON, ND 58421-0236
PO BOX 237, CARRINGTON, ND 58421-0237
PO BOX 238, CARRINGTON, ND 58421-0238
PO BOX 239, CARRINGTON, ND 58421-0239
PO BOX 240, CARRINGTON, ND 58421-0240
PO BOX 241, CARRINGTON, ND 58421-0241
PO BOX 242, CARRINGTON, ND 58421-0242
PO BOX 243, CARRINGTON, ND 58421-0243
PO BOX 244, CARRINGTON, ND 58421-0244
PO BOX 245, CARRINGTON, ND 58421-0245
PO BOX 246, CARRINGTON, ND 58421-0246
PO BOX 247, CARRINGTON, ND 58421-0247
PO BOX 248, CARRINGTON, ND 58421-0248
PO BOX 249, CARRINGTON, ND 58421-0249
PO BOX 250, CARRINGTON, ND 58421-0250
PO BOX 251, CARRINGTON, ND 58421-0251
PO BOX 252, CARRINGTON, ND 58421-0252
PO BOX 253, CARRINGTON, ND 58421-0253
PO BOX 254, CARRINGTON, ND 58421-0254
PO BOX 255, CARRINGTON, ND 58421-0255
PO BOX 256, CARRINGTON, ND 58421-0256
PO BOX 257, CARRINGTON, ND 58421-0257
PO BOX 258, CARRINGTON, ND 58421-0258
PO BOX 259, CARRINGTON, ND 58421-0259
PO BOX 260, CARRINGTON, ND 58421-0260
PO BOX 261, CARRINGTON, ND 58421-0261
PO BOX 262, CARRINGTON, ND 58421-0262
PO BOX 263, CARRINGTON, ND 58421-0263
PO BOX 264, CARRINGTON, ND 58421-0264
PO BOX 265, CARRINGTON, ND 58421-0265
PO BOX 266, CARRINGTON, ND 58421-0266
PO BOX 267, CARRINGTON, ND 58421-0267
PO BOX 268, CARRINGTON, ND 58421-0268
PO BOX 269, CARRINGTON, ND 58421-0269
PO BOX 270, CARRINGTON, ND 58421-0270
PO BOX 271, CARRINGTON, ND 58421-0271
PO BOX 272, CARRINGTON, ND 58421-0272
PO BOX 273, CARRINGTON, ND 58421-0273
PO BOX 274, CARRINGTON, ND 58421-0274
PO BOX 275, CARRINGTON, ND 58421-0275
PO BOX 276, CARRINGTON, ND 58421-0276
PO BOX 277, CARRINGTON, ND 58421-0277
PO BOX 278, CARRINGTON, ND 58421-0278
PO BOX 279, CARRINGTON, ND 58421-0279
PO BOX 280, CARRINGTON, ND 58421-0280
PO BOX 281, CARRINGTON, ND 58421-0281
PO BOX 282, CARRINGTON, ND 58421-0282
PO BOX 283, CARRINGTON, ND 58421-0283
PO BOX 284, CARRINGTON, ND 58421-0284
PO BOX 285, CARRINGTON, ND 58421-0285
PO BOX 286, CARRINGTON, ND 58421-0286
PO BOX 287, CARRINGTON, ND 58421-0287
PO BOX 288, CARRINGTON, ND 58421-0288
PO BOX 289, CARRINGTON, ND 58421-0289
PO BOX 290, CARRINGTON, ND 58421-0290
PO BOX 291, CARRINGTON, ND 58421-0291
PO BOX 292, CARRINGTON, ND 58421-0292
PO BOX 293, CARRINGTON, ND 58421-0293
PO BOX 294, CARRINGTON, ND 58421-0294
PO BOX 295, CARRINGTON, ND 58421-0295
PO BOX 296, CARRINGTON, ND 58421-0296
PO BOX 297, CARRINGTON, ND 58421-0297
PO BOX 298, CARRINGTON, ND 58421-0298
PO BOX 299, CARRINGTON, ND 58421-0299
PO BOX 300, CARRINGTON, ND 58421-0300
PO BOX 301, CARRINGTON, ND 58421-0301
PO BOX 302, CARRINGTON, ND 58421-0302
PO BOX 303, CARRINGTON, ND 58421-0303
PO BOX 304, CARRINGTON, ND 58421-0304
PO BOX 305, CARRINGTON, ND 58421-0305
PO BOX 306, CARRINGTON, ND 58421-0306
PO BOX 307, CARRINGTON, ND 58421-0307
PO BOX 308, CARRINGTON, ND 58421-0308
PO BOX 309, CARRINGTON, ND 58421-0309
PO BOX 310, CARRINGTON, ND 58421-0310
PO BOX 311, CARRINGTON, ND 58421-0311
PO BOX 312, CARRINGTON, ND 58421-0312
PO BOX 313, CARRINGTON, ND 58421-0313
PO BOX 314, CARRINGTON, ND 58421-0314
PO BOX 315, CARRINGTON, ND 58421-0315
PO BOX 316, CARRINGTON, ND 58421-0316
PO BOX 317, CARRINGTON, ND 58421-0317
PO BOX 318, CARRINGTON, ND 58421-0318
PO BOX 319, CARRINGTON, ND 58421-0319
PO BOX 320, CARRINGTON, ND 58421-0320
PO BOX 321, CARRINGTON, ND 58421-0321
PO BOX 322, CARRINGTON, ND 58421-0322
PO BOX 323, CARRINGTON, ND 58421-0323
PO BOX 324, CARRINGTON, ND 58421-0324
PO BOX 325, CARRINGTON, ND 58421-0325
PO BOX 326, CARRINGTON, ND 58421-0326
PO BOX 327, CARRINGTON, ND 58421-0327
PO BOX 328, CARRINGTON, ND 58421-0328
PO BOX 329, CARRINGTON, ND 58421-0329
PO BOX 330, CARRINGTON, ND 58421-0330
PO BOX 331, CARRINGTON, ND 58421-0331
PO BOX 332, CARRINGTON, ND 58421-0332
PO BOX 333, CARRINGTON, ND 58421-0333
PO BOX 334, CARRINGTON, ND 58421-0334
PO BOX 335, CARRINGTON, ND 58421-0335
PO BOX 336, CARRINGTON, ND 58421-0336
PO BOX 337, CARRINGTON, ND 58421-0337
PO BOX 338, CARRINGTON, ND 58421-0338
PO BOX 339, CARRINGTON, ND 58421-0339
PO BOX 340, CARRINGTON, ND 58421-0340
PO BOX 341, CARRINGTON, ND 58421-0341
PO BOX 342, CARRINGTON, ND 58421-0342
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