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 211, BAYBORO, NC 28515-0211
PO BOX 212, BAYBORO, NC 28515-0212
PO BOX 213, BAYBORO, NC 28515-0213
PO BOX 214, BAYBORO, NC 28515-0214
PO BOX 215, BAYBORO, NC 28515-0215
PO BOX 216, BAYBORO, NC 28515-0216
PO BOX 217, BAYBORO, NC 28515-0217
PO BOX 218, BAYBORO, NC 28515-0218
PO BOX 219, BAYBORO, NC 28515-0219
PO BOX 220, BAYBORO, NC 28515-0220
PO BOX 221, BAYBORO, NC 28515-0221
PO BOX 222, BAYBORO, NC 28515-0222
PO BOX 223, BAYBORO, NC 28515-0223
PO BOX 224, BAYBORO, NC 28515-0224
PO BOX 225, BAYBORO, NC 28515-0225
PO BOX 226, BAYBORO, NC 28515-0226
PO BOX 227, BAYBORO, NC 28515-0227
PO BOX 228, BAYBORO, NC 28515-0228
PO BOX 229, BAYBORO, NC 28515-0229
PO BOX 230, BAYBORO, NC 28515-0230
PO BOX 231, BAYBORO, NC 28515-0231
PO BOX 232, BAYBORO, NC 28515-0232
PO BOX 233, BAYBORO, NC 28515-0233
PO BOX 234, BAYBORO, NC 28515-0234
PO BOX 235, BAYBORO, NC 28515-0235
PO BOX 236, BAYBORO, NC 28515-0236
PO BOX 237, BAYBORO, NC 28515-0237
PO BOX 238, BAYBORO, NC 28515-0238
PO BOX 239, BAYBORO, NC 28515-0239
PO BOX 240, BAYBORO, NC 28515-0240
PO BOX 241, BAYBORO, NC 28515-0241
PO BOX 242, BAYBORO, NC 28515-0242
PO BOX 243, BAYBORO, NC 28515-0243
PO BOX 244, BAYBORO, NC 28515-0244
PO BOX 245, BAYBORO, NC 28515-0245
PO BOX 246, BAYBORO, NC 28515-0246
PO BOX 247, BAYBORO, NC 28515-0247
PO BOX 248, BAYBORO, NC 28515-0248
PO BOX 249, BAYBORO, NC 28515-0249
PO BOX 250, BAYBORO, NC 28515-0250
PO BOX 251, BAYBORO, NC 28515-0251
PO BOX 252, BAYBORO, NC 28515-0252
PO BOX 253, BAYBORO, NC 28515-0253
PO BOX 254, BAYBORO, NC 28515-0254
PO BOX 255, BAYBORO, NC 28515-0255
PO BOX 256, BAYBORO, NC 28515-0256
PO BOX 257, BAYBORO, NC 28515-0257
PO BOX 258, BAYBORO, NC 28515-0258
PO BOX 259, BAYBORO, NC 28515-0259
PO BOX 260, BAYBORO, NC 28515-0260
PO BOX 261, BAYBORO, NC 28515-0261
PO BOX 262, BAYBORO, NC 28515-0262
PO BOX 263, BAYBORO, NC 28515-0263
PO BOX 264, BAYBORO, NC 28515-0264
PO BOX 265, BAYBORO, NC 28515-0265
PO BOX 266, BAYBORO, NC 28515-0266
PO BOX 267, BAYBORO, NC 28515-0267
PO BOX 268, BAYBORO, NC 28515-0268
PO BOX 269, BAYBORO, NC 28515-0269
PO BOX 270, BAYBORO, NC 28515-0270
PO BOX 271, BAYBORO, NC 28515-0271
PO BOX 272, BAYBORO, NC 28515-0272
PO BOX 273, BAYBORO, NC 28515-0273
PO BOX 274, BAYBORO, NC 28515-0274
PO BOX 275, BAYBORO, NC 28515-0275
PO BOX 276, BAYBORO, NC 28515-0276
PO BOX 277, BAYBORO, NC 28515-0277
PO BOX 278, BAYBORO, NC 28515-0278
PO BOX 279, BAYBORO, NC 28515-0279
PO BOX 280, BAYBORO, NC 28515-0280
PO BOX 281, BAYBORO, NC 28515-0281
PO BOX 282, BAYBORO, NC 28515-0282
PO BOX 283, BAYBORO, NC 28515-0283
PO BOX 284, BAYBORO, NC 28515-0284
PO BOX 285, BAYBORO, NC 28515-0285
PO BOX 286, BAYBORO, NC 28515-0286
PO BOX 287, BAYBORO, NC 28515-0287
PO BOX 288, BAYBORO, NC 28515-0288
PO BOX 289, BAYBORO, NC 28515-0289
PO BOX 290, BAYBORO, NC 28515-0290
PO BOX 291, BAYBORO, NC 28515-0291
PO BOX 292, BAYBORO, NC 28515-0292
PO BOX 293, BAYBORO, NC 28515-0293
PO BOX 294, BAYBORO, NC 28515-0294
PO BOX 295, BAYBORO, NC 28515-0295
PO BOX 296, BAYBORO, NC 28515-0296
PO BOX 297, BAYBORO, NC 28515-0297
PO BOX 298, BAYBORO, NC 28515-0298
PO BOX 299, BAYBORO, NC 28515-0299
PO BOX 300, BAYBORO, NC 28515-0300
PO BOX 301, BAYBORO, NC 28515-0301
PO BOX 302, BAYBORO, NC 28515-0302
PO BOX 303, BAYBORO, NC 28515-0303
PO BOX 304, BAYBORO, NC 28515-0304
PO BOX 305, BAYBORO, NC 28515-0305
PO BOX 306, BAYBORO, NC 28515-0306
PO BOX 307, BAYBORO, NC 28515-0307
PO BOX 308, BAYBORO, NC 28515-0308
PO BOX 309, BAYBORO, NC 28515-0309
PO BOX 310, BAYBORO, NC 28515-0310
PO BOX 311, BAYBORO, NC 28515-0311
PO BOX 312, BAYBORO, NC 28515-0312
PO BOX 313, BAYBORO, NC 28515-0313
PO BOX 314, BAYBORO, NC 28515-0314
PO BOX 315, BAYBORO, NC 28515-0315
PO BOX 316, BAYBORO, NC 28515-0316
PO BOX 317, BAYBORO, NC 28515-0317
PO BOX 318, BAYBORO, NC 28515-0318
PO BOX 319, BAYBORO, NC 28515-0319
PO BOX 320, BAYBORO, NC 28515-0320
PO BOX 321, BAYBORO, NC 28515-0321
PO BOX 322, BAYBORO, NC 28515-0322
PO BOX 323, BAYBORO, NC 28515-0323
PO BOX 324, BAYBORO, NC 28515-0324
PO BOX 325, BAYBORO, NC 28515-0325
PO BOX 326, BAYBORO, NC 28515-0326
PO BOX 327, BAYBORO, NC 28515-0327
PO BOX 328, BAYBORO, NC 28515-0328
PO BOX 329, BAYBORO, NC 28515-0329
PO BOX 330, BAYBORO, NC 28515-0330
PO BOX 331, BAYBORO, NC 28515-0331
PO BOX 332, BAYBORO, NC 28515-0332
PO BOX 333, BAYBORO, NC 28515-0333
PO BOX 334, BAYBORO, NC 28515-0334
PO BOX 335, BAYBORO, NC 28515-0335
PO BOX 336, BAYBORO, NC 28515-0336
PO BOX 337, BAYBORO, NC 28515-0337
PO BOX 338, BAYBORO, NC 28515-0338
PO BOX 339, BAYBORO, NC 28515-0339
PO BOX 340, BAYBORO, NC 28515-0340
PO BOX 341, BAYBORO, NC 28515-0341
PO BOX 342, BAYBORO, NC 28515-0342
PO BOX 343, BAYBORO, NC 28515-0343
PO BOX 344, BAYBORO, NC 28515-0344
PO BOX 345, BAYBORO, NC 28515-0345
PO BOX 346, BAYBORO, NC 28515-0346
PO BOX 347, BAYBORO, NC 28515-0347
PO BOX 348, BAYBORO, NC 28515-0348
PO BOX 349, BAYBORO, NC 28515-0349
PO BOX 350, BAYBORO, NC 28515-0350
PO BOX 351, BAYBORO, NC 28515-0351
PO BOX 352, BAYBORO, NC 28515-0352
PO BOX 353, BAYBORO, NC 28515-0353
PO BOX 354, BAYBORO, NC 28515-0354
PO BOX 355, BAYBORO, NC 28515-0355
PO BOX 356, BAYBORO, NC 28515-0356
PO BOX 357, BAYBORO, NC 28515-0357
PO BOX 358, BAYBORO, NC 28515-0358
PO BOX 359, BAYBORO, NC 28515-0359
PO BOX 360, BAYBORO, NC 28515-0360
PO BOX 361, BAYBORO, NC 28515-0361
PO BOX 362, BAYBORO, NC 28515-0362
PO BOX 363, BAYBORO, NC 28515-0363
PO BOX 364, BAYBORO, NC 28515-0364
PO BOX 365, BAYBORO, NC 28515-0365
PO BOX 366, BAYBORO, NC 28515-0366
PO BOX 367, BAYBORO, NC 28515-0367
PO BOX 368, BAYBORO, NC 28515-0368
PO BOX 369, BAYBORO, NC 28515-0369
PO BOX 370, BAYBORO, NC 28515-0370
PO BOX 371, BAYBORO, NC 28515-0371
PO BOX 372, BAYBORO, NC 28515-0372
PO BOX 373, BAYBORO, NC 28515-0373
PO BOX 374, BAYBORO, NC 28515-0374
PO BOX 375, BAYBORO, NC 28515-0375
PO BOX 376, BAYBORO, NC 28515-0376
PO BOX 377, BAYBORO, NC 28515-0377
PO BOX 378, BAYBORO, NC 28515-0378
PO BOX 379, BAYBORO, NC 28515-0379
PO BOX 380, BAYBORO, NC 28515-0380
PO BOX 381, BAYBORO, NC 28515-0381
PO BOX 382, BAYBORO, NC 28515-0382
PO BOX 383, BAYBORO, NC 28515-0383
PO BOX 384, BAYBORO, NC 28515-0384
PO BOX 385, BAYBORO, NC 28515-0385
PO BOX 386, BAYBORO, NC 28515-0386
PO BOX 387, BAYBORO, NC 28515-0387
PO BOX 388, BAYBORO, NC 28515-0388
PO BOX 389, BAYBORO, NC 28515-0389
PO BOX 390, BAYBORO, NC 28515-0390
PO BOX 391, BAYBORO, NC 28515-0391
PO BOX 392, BAYBORO, NC 28515-0392
PO BOX 393, BAYBORO, NC 28515-0393
PO BOX 394, BAYBORO, NC 28515-0394
PO BOX 395, BAYBORO, NC 28515-0395
PO BOX 396, BAYBORO, NC 28515-0396
PO BOX 397, BAYBORO, NC 28515-0397
PO BOX 398, BAYBORO, NC 28515-0398
PO BOX 399, BAYBORO, NC 28515-0399
PO BOX 400, BAYBORO, NC 28515-0400
PO BOX 401, BAYBORO, NC 28515-0401
PO BOX 402, BAYBORO, NC 28515-0402
PO BOX 403, BAYBORO, NC 28515-0403
PO BOX 404, BAYBORO, NC 28515-0404
PO BOX 405, BAYBORO, NC 28515-0405
PO BOX 406, BAYBORO, NC 28515-0406
PO BOX 407, BAYBORO, NC 28515-0407
PO BOX 408, BAYBORO, NC 28515-0408
PO BOX 409, BAYBORO, NC 28515-0409
PO BOX 410, BAYBORO, NC 28515-0410
PO BOX 411, BAYBORO, NC 28515-0411
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