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 301, MOUNT OLIVE, NC 28365-0301
PO BOX 302, MOUNT OLIVE, NC 28365-0302
PO BOX 303, MOUNT OLIVE, NC 28365-0303
PO BOX 304, MOUNT OLIVE, NC 28365-0304
PO BOX 305, MOUNT OLIVE, NC 28365-0305
PO BOX 306, MOUNT OLIVE, NC 28365-0306
PO BOX 307, MOUNT OLIVE, NC 28365-0307
PO BOX 308, MOUNT OLIVE, NC 28365-0308
PO BOX 309, MOUNT OLIVE, NC 28365-0309
PO BOX 310, MOUNT OLIVE, NC 28365-0310
PO BOX 311, MOUNT OLIVE, NC 28365-0311
PO BOX 312, MOUNT OLIVE, NC 28365-0312
PO BOX 313, MOUNT OLIVE, NC 28365-0313
PO BOX 314, MOUNT OLIVE, NC 28365-0314
PO BOX 315, MOUNT OLIVE, NC 28365-0315
PO BOX 316, MOUNT OLIVE, NC 28365-0316
PO BOX 317, MOUNT OLIVE, NC 28365-0317
PO BOX 318, MOUNT OLIVE, NC 28365-0318
PO BOX 319, MOUNT OLIVE, NC 28365-0319
PO BOX 320, MOUNT OLIVE, NC 28365-0320
PO BOX 321, MOUNT OLIVE, NC 28365-0321
PO BOX 322, MOUNT OLIVE, NC 28365-0322
PO BOX 323, MOUNT OLIVE, NC 28365-0323
PO BOX 324, MOUNT OLIVE, NC 28365-0324
PO BOX 325, MOUNT OLIVE, NC 28365-0325
PO BOX 326, MOUNT OLIVE, NC 28365-0326
PO BOX 327, MOUNT OLIVE, NC 28365-0327
PO BOX 328, MOUNT OLIVE, NC 28365-0328
PO BOX 329, MOUNT OLIVE, NC 28365-0329
PO BOX 330, MOUNT OLIVE, NC 28365-0330
PO BOX 331, MOUNT OLIVE, NC 28365-0331
PO BOX 332, MOUNT OLIVE, NC 28365-0332
PO BOX 333, MOUNT OLIVE, NC 28365-0333
PO BOX 334, MOUNT OLIVE, NC 28365-0334
PO BOX 335, MOUNT OLIVE, NC 28365-0335
PO BOX 336, MOUNT OLIVE, NC 28365-0336
PO BOX 337, MOUNT OLIVE, NC 28365-0337
PO BOX 338, MOUNT OLIVE, NC 28365-0338
PO BOX 339, MOUNT OLIVE, NC 28365-0339
PO BOX 340, MOUNT OLIVE, NC 28365-0340
PO BOX 341, MOUNT OLIVE, NC 28365-0341
PO BOX 342, MOUNT OLIVE, NC 28365-0342
PO BOX 343, MOUNT OLIVE, NC 28365-0343
PO BOX 344, MOUNT OLIVE, NC 28365-0344
PO BOX 345, MOUNT OLIVE, NC 28365-0345
PO BOX 346, MOUNT OLIVE, NC 28365-0346
PO BOX 347, MOUNT OLIVE, NC 28365-0347
PO BOX 348, MOUNT OLIVE, NC 28365-0348
PO BOX 349, MOUNT OLIVE, NC 28365-0349
PO BOX 350, MOUNT OLIVE, NC 28365-0350
PO BOX 351, MOUNT OLIVE, NC 28365-0351
PO BOX 352, MOUNT OLIVE, NC 28365-0352
PO BOX 353, MOUNT OLIVE, NC 28365-0353
PO BOX 354, MOUNT OLIVE, NC 28365-0354
PO BOX 355, MOUNT OLIVE, NC 28365-0355
PO BOX 356, MOUNT OLIVE, NC 28365-0356
PO BOX 357, MOUNT OLIVE, NC 28365-0357
PO BOX 358, MOUNT OLIVE, NC 28365-0358
PO BOX 359, MOUNT OLIVE, NC 28365-0359
PO BOX 360, MOUNT OLIVE, NC 28365-0360
PO BOX 361, MOUNT OLIVE, NC 28365-0361
PO BOX 362, MOUNT OLIVE, NC 28365-0362
PO BOX 363, MOUNT OLIVE, NC 28365-0363
PO BOX 364, MOUNT OLIVE, NC 28365-0364
PO BOX 365, MOUNT OLIVE, NC 28365-0365
PO BOX 366, MOUNT OLIVE, NC 28365-0366
PO BOX 367, MOUNT OLIVE, NC 28365-0367
PO BOX 368, MOUNT OLIVE, NC 28365-0368
PO BOX 369, MOUNT OLIVE, NC 28365-0369
PO BOX 370, MOUNT OLIVE, NC 28365-0370
PO BOX 371, MOUNT OLIVE, NC 28365-0371
PO BOX 372, MOUNT OLIVE, NC 28365-0372
PO BOX 373, MOUNT OLIVE, NC 28365-0373
PO BOX 374, MOUNT OLIVE, NC 28365-0374
PO BOX 375, MOUNT OLIVE, NC 28365-0375
PO BOX 376, MOUNT OLIVE, NC 28365-0376
PO BOX 377, MOUNT OLIVE, NC 28365-0377
PO BOX 378, MOUNT OLIVE, NC 28365-0378
PO BOX 379, MOUNT OLIVE, NC 28365-0379
PO BOX 380, MOUNT OLIVE, NC 28365-0380
PO BOX 381, MOUNT OLIVE, NC 28365-0381
PO BOX 382, MOUNT OLIVE, NC 28365-0382
PO BOX 383, MOUNT OLIVE, NC 28365-0383
PO BOX 384, MOUNT OLIVE, NC 28365-0384
PO BOX 385, MOUNT OLIVE, NC 28365-0385
PO BOX 386, MOUNT OLIVE, NC 28365-0386
PO BOX 387, MOUNT OLIVE, NC 28365-0387
PO BOX 388, MOUNT OLIVE, NC 28365-0388
PO BOX 389, MOUNT OLIVE, NC 28365-0389
PO BOX 390, MOUNT OLIVE, NC 28365-0390
PO BOX 391, MOUNT OLIVE, NC 28365-0391
PO BOX 392, MOUNT OLIVE, NC 28365-0392
PO BOX 393, MOUNT OLIVE, NC 28365-0393
PO BOX 394, MOUNT OLIVE, NC 28365-0394
PO BOX 395, MOUNT OLIVE, NC 28365-0395
PO BOX 396, MOUNT OLIVE, NC 28365-0396
PO BOX 397, MOUNT OLIVE, NC 28365-0397
PO BOX 398, MOUNT OLIVE, NC 28365-0398
PO BOX 399, MOUNT OLIVE, NC 28365-0399
PO BOX 400, MOUNT OLIVE, NC 28365-0400
PO BOX 401, MOUNT OLIVE, NC 28365-0401
PO BOX 402, MOUNT OLIVE, NC 28365-0402
PO BOX 403, MOUNT OLIVE, NC 28365-0403
PO BOX 404, MOUNT OLIVE, NC 28365-0404
PO BOX 405, MOUNT OLIVE, NC 28365-0405
PO BOX 406, MOUNT OLIVE, NC 28365-0406
PO BOX 407, MOUNT OLIVE, NC 28365-0407
PO BOX 408, MOUNT OLIVE, NC 28365-0408
PO BOX 409, MOUNT OLIVE, NC 28365-0409
PO BOX 410, MOUNT OLIVE, NC 28365-0410
PO BOX 411, MOUNT OLIVE, NC 28365-0411
PO BOX 412, MOUNT OLIVE, NC 28365-0412
PO BOX 413, MOUNT OLIVE, NC 28365-0413
PO BOX 414, MOUNT OLIVE, NC 28365-0414
PO BOX 415, MOUNT OLIVE, NC 28365-0415
PO BOX 416, MOUNT OLIVE, NC 28365-0416
PO BOX 417, MOUNT OLIVE, NC 28365-0417
PO BOX 418, MOUNT OLIVE, NC 28365-0418
PO BOX 419, MOUNT OLIVE, NC 28365-0419
PO BOX 420, MOUNT OLIVE, NC 28365-0420
PO BOX 421, MOUNT OLIVE, NC 28365-0421
PO BOX 422, MOUNT OLIVE, NC 28365-0422
PO BOX 423, MOUNT OLIVE, NC 28365-0423
PO BOX 424, MOUNT OLIVE, NC 28365-0424
PO BOX 425, MOUNT OLIVE, NC 28365-0425
PO BOX 426, MOUNT OLIVE, NC 28365-0426
PO BOX 427, MOUNT OLIVE, NC 28365-0427
PO BOX 428, MOUNT OLIVE, NC 28365-0428
PO BOX 429, MOUNT OLIVE, NC 28365-0429
PO BOX 430, MOUNT OLIVE, NC 28365-0430
PO BOX 431, MOUNT OLIVE, NC 28365-0431
PO BOX 432, MOUNT OLIVE, NC 28365-0432
PO BOX 433, MOUNT OLIVE, NC 28365-0433
PO BOX 434, MOUNT OLIVE, NC 28365-0434
PO BOX 435, MOUNT OLIVE, NC 28365-0435
PO BOX 436, MOUNT OLIVE, NC 28365-0436
PO BOX 437, MOUNT OLIVE, NC 28365-0437
PO BOX 438, MOUNT OLIVE, NC 28365-0438
PO BOX 439, MOUNT OLIVE, NC 28365-0439
PO BOX 440, MOUNT OLIVE, NC 28365-0440
PO BOX 441, MOUNT OLIVE, NC 28365-0441
PO BOX 442, MOUNT OLIVE, NC 28365-0442
PO BOX 443, MOUNT OLIVE, NC 28365-0443
PO BOX 444, MOUNT OLIVE, NC 28365-0444
PO BOX 445, MOUNT OLIVE, NC 28365-0445
PO BOX 446, MOUNT OLIVE, NC 28365-0446
PO BOX 447, MOUNT OLIVE, NC 28365-0447
PO BOX 448, MOUNT OLIVE, NC 28365-0448
PO BOX 449, MOUNT OLIVE, NC 28365-0449
PO BOX 450, MOUNT OLIVE, NC 28365-0450
PO BOX 451, MOUNT OLIVE, NC 28365-0451
PO BOX 452, MOUNT OLIVE, NC 28365-0452
PO BOX 453, MOUNT OLIVE, NC 28365-0453
PO BOX 454, MOUNT OLIVE, NC 28365-0454
PO BOX 455, MOUNT OLIVE, NC 28365-0455
PO BOX 456, MOUNT OLIVE, NC 28365-0456
PO BOX 457, MOUNT OLIVE, NC 28365-0457
PO BOX 458, MOUNT OLIVE, NC 28365-0458
PO BOX 459, MOUNT OLIVE, NC 28365-0459
PO BOX 460, MOUNT OLIVE, NC 28365-0460
PO BOX 461, MOUNT OLIVE, NC 28365-0461
PO BOX 462, MOUNT OLIVE, NC 28365-0462
PO BOX 463, MOUNT OLIVE, NC 28365-0463
PO BOX 464, MOUNT OLIVE, NC 28365-0464
PO BOX 465, MOUNT OLIVE, NC 28365-0465
PO BOX 466, MOUNT OLIVE, NC 28365-0466
PO BOX 467, MOUNT OLIVE, NC 28365-0467
PO BOX 468, MOUNT OLIVE, NC 28365-0468
PO BOX 469, MOUNT OLIVE, NC 28365-0469
PO BOX 470, MOUNT OLIVE, NC 28365-0470
PO BOX 471, MOUNT OLIVE, NC 28365-0471
PO BOX 472, MOUNT OLIVE, NC 28365-0472
PO BOX 473, MOUNT OLIVE, NC 28365-0473
PO BOX 474, MOUNT OLIVE, NC 28365-0474
PO BOX 475, MOUNT OLIVE, NC 28365-0475
PO BOX 476, MOUNT OLIVE, NC 28365-0476
PO BOX 477, MOUNT OLIVE, NC 28365-0477
PO BOX 478, MOUNT OLIVE, NC 28365-0478
PO BOX 479, MOUNT OLIVE, NC 28365-0479
PO BOX 480, MOUNT OLIVE, NC 28365-0480
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