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 261, CLINTON, NC 28329-0261
PO BOX 262, CLINTON, NC 28329-0262
PO BOX 263, CLINTON, NC 28329-0263
PO BOX 264, CLINTON, NC 28329-0264
PO BOX 265, CLINTON, NC 28329-0265
PO BOX 266, CLINTON, NC 28329-0266
PO BOX 267, CLINTON, NC 28329-0267
PO BOX 268, CLINTON, NC 28329-0268
PO BOX 269, CLINTON, NC 28329-0269
PO BOX 270, CLINTON, NC 28329-0270
PO BOX 271, CLINTON, NC 28329-0271
PO BOX 272, CLINTON, NC 28329-0272
PO BOX 273, CLINTON, NC 28329-0273
PO BOX 274, CLINTON, NC 28329-0274
PO BOX 275, CLINTON, NC 28329-0275
PO BOX 276, CLINTON, NC 28329-0276
PO BOX 277, CLINTON, NC 28329-0277
PO BOX 278, CLINTON, NC 28329-0278
PO BOX 279, CLINTON, NC 28329-0279
PO BOX 280, CLINTON, NC 28329-0280
PO BOX 281, CLINTON, NC 28329-0281
PO BOX 282, CLINTON, NC 28329-0282
PO BOX 283, CLINTON, NC 28329-0283
PO BOX 284, CLINTON, NC 28329-0284
PO BOX 285, CLINTON, NC 28329-0285
PO BOX 286, CLINTON, NC 28329-0286
PO BOX 287, CLINTON, NC 28329-0287
PO BOX 288, CLINTON, NC 28329-0288
PO BOX 289, CLINTON, NC 28329-0289
PO BOX 290, CLINTON, NC 28329-0290
PO BOX 291, CLINTON, NC 28329-0291
PO BOX 292, CLINTON, NC 28329-0292
PO BOX 293, CLINTON, NC 28329-0293
PO BOX 294, CLINTON, NC 28329-0294
PO BOX 295, CLINTON, NC 28329-0295
PO BOX 296, CLINTON, NC 28329-0296
PO BOX 297, CLINTON, NC 28329-0297
PO BOX 298, CLINTON, NC 28329-0298
PO BOX 299, CLINTON, NC 28329-0299
PO BOX 300, CLINTON, NC 28329-0300
PO BOX 301, CLINTON, NC 28329-0301
PO BOX 302, CLINTON, NC 28329-0302
PO BOX 303, CLINTON, NC 28329-0303
PO BOX 304, CLINTON, NC 28329-0304
PO BOX 305, CLINTON, NC 28329-0305
PO BOX 306, CLINTON, NC 28329-0306
PO BOX 307, CLINTON, NC 28329-0307
PO BOX 308, CLINTON, NC 28329-0308
PO BOX 309, CLINTON, NC 28329-0309
PO BOX 310, CLINTON, NC 28329-0310
PO BOX 311, CLINTON, NC 28329-0311
PO BOX 312, CLINTON, NC 28329-0312
PO BOX 313, CLINTON, NC 28329-0313
PO BOX 314, CLINTON, NC 28329-0314
PO BOX 315, CLINTON, NC 28329-0315
PO BOX 316, CLINTON, NC 28329-0316
PO BOX 317, CLINTON, NC 28329-0317
PO BOX 318, CLINTON, NC 28329-0318
PO BOX 319, CLINTON, NC 28329-0319
PO BOX 320, CLINTON, NC 28329-0320
PO BOX 321, CLINTON, NC 28329-0321
PO BOX 322, CLINTON, NC 28329-0322
PO BOX 323, CLINTON, NC 28329-0323
PO BOX 324, CLINTON, NC 28329-0324
PO BOX 325, CLINTON, NC 28329-0325
PO BOX 326, CLINTON, NC 28329-0326
PO BOX 327, CLINTON, NC 28329-0327
PO BOX 328, CLINTON, NC 28329-0328
PO BOX 329, CLINTON, NC 28329-0329
PO BOX 330, CLINTON, NC 28329-0330
PO BOX 331, CLINTON, NC 28329-0331
PO BOX 332, CLINTON, NC 28329-0332
PO BOX 333, CLINTON, NC 28329-0333
PO BOX 334, CLINTON, NC 28329-0334
PO BOX 335, CLINTON, NC 28329-0335
PO BOX 336, CLINTON, NC 28329-0336
PO BOX 337, CLINTON, NC 28329-0337
PO BOX 338, CLINTON, NC 28329-0338
PO BOX 339, CLINTON, NC 28329-0339
PO BOX 340, CLINTON, NC 28329-0340
PO BOX 341, CLINTON, NC 28329-0341
PO BOX 342, CLINTON, NC 28329-0342
PO BOX 343, CLINTON, NC 28329-0343
PO BOX 344, CLINTON, NC 28329-0344
PO BOX 345, CLINTON, NC 28329-0345
PO BOX 346, CLINTON, NC 28329-0346
PO BOX 347, CLINTON, NC 28329-0347
PO BOX 348, CLINTON, NC 28329-0348
PO BOX 349, CLINTON, NC 28329-0349
PO BOX 350, CLINTON, NC 28329-0350
PO BOX 351, CLINTON, NC 28329-0351
PO BOX 352, CLINTON, NC 28329-0352
PO BOX 353, CLINTON, NC 28329-0353
PO BOX 354, CLINTON, NC 28329-0354
PO BOX 355, CLINTON, NC 28329-0355
PO BOX 356, CLINTON, NC 28329-0356
PO BOX 357, CLINTON, NC 28329-0357
PO BOX 358, CLINTON, NC 28329-0358
PO BOX 359, CLINTON, NC 28329-0359
PO BOX 360, CLINTON, NC 28329-0360
PO BOX 361, CLINTON, NC 28329-0361
PO BOX 362, CLINTON, NC 28329-0362
PO BOX 363, CLINTON, NC 28329-0363
PO BOX 364, CLINTON, NC 28329-0364
PO BOX 365, CLINTON, NC 28329-0365
PO BOX 366, CLINTON, NC 28329-0366
PO BOX 367, CLINTON, NC 28329-0367
PO BOX 368, CLINTON, NC 28329-0368
PO BOX 369, CLINTON, NC 28329-0369
PO BOX 370, CLINTON, NC 28329-0370
PO BOX 371, CLINTON, NC 28329-0371
PO BOX 372, CLINTON, NC 28329-0372
PO BOX 373, CLINTON, NC 28329-0373
PO BOX 374, CLINTON, NC 28329-0374
PO BOX 375, CLINTON, NC 28329-0375
PO BOX 376, CLINTON, NC 28329-0376
PO BOX 377, CLINTON, NC 28329-0377
PO BOX 378, CLINTON, NC 28329-0378
PO BOX 379, CLINTON, NC 28329-0379
PO BOX 380, CLINTON, NC 28329-0380
PO BOX 381, CLINTON, NC 28329-0381
PO BOX 382, CLINTON, NC 28329-0382
PO BOX 383, CLINTON, NC 28329-0383
PO BOX 384, CLINTON, NC 28329-0384
PO BOX 385, CLINTON, NC 28329-0385
PO BOX 386, CLINTON, NC 28329-0386
PO BOX 387, CLINTON, NC 28329-0387
PO BOX 388, CLINTON, NC 28329-0388
PO BOX 389, CLINTON, NC 28329-0389
PO BOX 390, CLINTON, NC 28329-0390
PO BOX 391, CLINTON, NC 28329-0391
PO BOX 392, CLINTON, NC 28329-0392
PO BOX 393, CLINTON, NC 28329-0393
PO BOX 394, CLINTON, NC 28329-0394
PO BOX 395, CLINTON, NC 28329-0395
PO BOX 396, CLINTON, NC 28329-0396
PO BOX 397, CLINTON, NC 28329-0397
PO BOX 398, CLINTON, NC 28329-0398
PO BOX 399, CLINTON, NC 28329-0399
PO BOX 400, CLINTON, NC 28329-0400
PO BOX 401, CLINTON, NC 28329-0401
PO BOX 402, CLINTON, NC 28329-0402
PO BOX 403, CLINTON, NC 28329-0403
PO BOX 404, CLINTON, NC 28329-0404
PO BOX 405, CLINTON, NC 28329-0405
PO BOX 406, CLINTON, NC 28329-0406
PO BOX 407, CLINTON, NC 28329-0407
PO BOX 408, CLINTON, NC 28329-0408
PO BOX 409, CLINTON, NC 28329-0409
PO BOX 410, CLINTON, NC 28329-0410
PO BOX 411, CLINTON, NC 28329-0411
PO BOX 412, CLINTON, NC 28329-0412
PO BOX 413, CLINTON, NC 28329-0413
PO BOX 414, CLINTON, NC 28329-0414
PO BOX 415, CLINTON, NC 28329-0415
PO BOX 416, CLINTON, NC 28329-0416
PO BOX 417, CLINTON, NC 28329-0417
PO BOX 418, CLINTON, NC 28329-0418
PO BOX 419, CLINTON, NC 28329-0419
PO BOX 420, CLINTON, NC 28329-0420
PO BOX 421, CLINTON, NC 28329-0421
PO BOX 422, CLINTON, NC 28329-0422
PO BOX 423, CLINTON, NC 28329-0423
PO BOX 424, CLINTON, NC 28329-0424
PO BOX 425, CLINTON, NC 28329-0425
PO BOX 426, CLINTON, NC 28329-0426
PO BOX 427, CLINTON, NC 28329-0427
PO BOX 428, CLINTON, NC 28329-0428
PO BOX 429, CLINTON, NC 28329-0429
PO BOX 430, CLINTON, NC 28329-0430
PO BOX 431, CLINTON, NC 28329-0431
PO BOX 432, CLINTON, NC 28329-0432
PO BOX 433, CLINTON, NC 28329-0433
PO BOX 434, CLINTON, NC 28329-0434
PO BOX 435, CLINTON, NC 28329-0435
PO BOX 436, CLINTON, NC 28329-0436
PO BOX 437, CLINTON, NC 28329-0437
PO BOX 438, CLINTON, NC 28329-0438
PO BOX 439, CLINTON, NC 28329-0439
PO BOX 440, CLINTON, NC 28329-0440
PO BOX 441, CLINTON, NC 28329-0441
PO BOX 442, CLINTON, NC 28329-0442
PO BOX 443, CLINTON, NC 28329-0443
PO BOX 444, CLINTON, NC 28329-0444
PO BOX 445, CLINTON, NC 28329-0445
PO BOX 446, CLINTON, NC 28329-0446
PO BOX 447, CLINTON, NC 28329-0447
PO BOX 448, CLINTON, NC 28329-0448
PO BOX 449, CLINTON, NC 28329-0449
PO BOX 450, CLINTON, NC 28329-0450
PO BOX 451, CLINTON, NC 28329-0451
PO BOX 452, CLINTON, NC 28329-0452
PO BOX 453, CLINTON, NC 28329-0453
PO BOX 454, CLINTON, NC 28329-0454
PO BOX 455, CLINTON, NC 28329-0455
PO BOX 456, CLINTON, NC 28329-0456
PO BOX 457, CLINTON, NC 28329-0457
PO BOX 458, CLINTON, NC 28329-0458
PO BOX 459, CLINTON, NC 28329-0459
PO BOX 460, CLINTON, NC 28329-0460
PO BOX 461, CLINTON, NC 28329-0461
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