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 321, ARTESIA, NM 88211-0321
PO BOX 322, ARTESIA, NM 88211-0322
PO BOX 323, ARTESIA, NM 88211-0323
PO BOX 324, ARTESIA, NM 88211-0324
PO BOX 325, ARTESIA, NM 88211-0325
PO BOX 326, ARTESIA, NM 88211-0326
PO BOX 327, ARTESIA, NM 88211-0327
PO BOX 328, ARTESIA, NM 88211-0328
PO BOX 329, ARTESIA, NM 88211-0329
PO BOX 330, ARTESIA, NM 88211-0330
PO BOX 331, ARTESIA, NM 88211-0331
PO BOX 332, ARTESIA, NM 88211-0332
PO BOX 333, ARTESIA, NM 88211-0333
PO BOX 334, ARTESIA, NM 88211-0334
PO BOX 335, ARTESIA, NM 88211-0335
PO BOX 336, ARTESIA, NM 88211-0336
PO BOX 337, ARTESIA, NM 88211-0337
PO BOX 338, ARTESIA, NM 88211-0338
PO BOX 339, ARTESIA, NM 88211-0339
PO BOX 340, ARTESIA, NM 88211-0340
PO BOX 341, ARTESIA, NM 88211-0341
PO BOX 342, ARTESIA, NM 88211-0342
PO BOX 343, ARTESIA, NM 88211-0343
PO BOX 344, ARTESIA, NM 88211-0344
PO BOX 345, ARTESIA, NM 88211-0345
PO BOX 346, ARTESIA, NM 88211-0346
PO BOX 347, ARTESIA, NM 88211-0347
PO BOX 348, ARTESIA, NM 88211-0348
PO BOX 349, ARTESIA, NM 88211-0349
PO BOX 350, ARTESIA, NM 88211-0350
PO BOX 351, ARTESIA, NM 88211-0351
PO BOX 352, ARTESIA, NM 88211-0352
PO BOX 353, ARTESIA, NM 88211-0353
PO BOX 354, ARTESIA, NM 88211-0354
PO BOX 355, ARTESIA, NM 88211-0355
PO BOX 356, ARTESIA, NM 88211-0356
PO BOX 357, ARTESIA, NM 88211-0357
PO BOX 358, ARTESIA, NM 88211-0358
PO BOX 359, ARTESIA, NM 88211-0359
PO BOX 360, ARTESIA, NM 88211-0360
PO BOX 361, ARTESIA, NM 88211-0361
PO BOX 362, ARTESIA, NM 88211-0362
PO BOX 363, ARTESIA, NM 88211-0363
PO BOX 364, ARTESIA, NM 88211-0364
PO BOX 365, ARTESIA, NM 88211-0365
PO BOX 366, ARTESIA, NM 88211-0366
PO BOX 367, ARTESIA, NM 88211-0367
PO BOX 368, ARTESIA, NM 88211-0368
PO BOX 369, ARTESIA, NM 88211-0369
PO BOX 370, ARTESIA, NM 88211-0370
PO BOX 371, ARTESIA, NM 88211-0371
PO BOX 372, ARTESIA, NM 88211-0372
PO BOX 373, ARTESIA, NM 88211-0373
PO BOX 374, ARTESIA, NM 88211-0374
PO BOX 375, ARTESIA, NM 88211-0375
PO BOX 376, ARTESIA, NM 88211-0376
PO BOX 377, ARTESIA, NM 88211-0377
PO BOX 378, ARTESIA, NM 88211-0378
PO BOX 379, ARTESIA, NM 88211-0379
PO BOX 380, ARTESIA, NM 88211-0380
PO BOX 381, ARTESIA, NM 88211-0381
PO BOX 382, ARTESIA, NM 88211-0382
PO BOX 383, ARTESIA, NM 88211-0383
PO BOX 384, ARTESIA, NM 88211-0384
PO BOX 385, ARTESIA, NM 88211-0385
PO BOX 386, ARTESIA, NM 88211-0386
PO BOX 387, ARTESIA, NM 88211-0387
PO BOX 388, ARTESIA, NM 88211-0388
PO BOX 389, ARTESIA, NM 88211-0389
PO BOX 390, ARTESIA, NM 88211-0390
PO BOX 391, ARTESIA, NM 88211-0391
PO BOX 392, ARTESIA, NM 88211-0392
PO BOX 393, ARTESIA, NM 88211-0393
PO BOX 394, ARTESIA, NM 88211-0394
PO BOX 395, ARTESIA, NM 88211-0395
PO BOX 396, ARTESIA, NM 88211-0396
PO BOX 397, ARTESIA, NM 88211-0397
PO BOX 398, ARTESIA, NM 88211-0398
PO BOX 399, ARTESIA, NM 88211-0399
PO BOX 400, ARTESIA, NM 88211-0400
PO BOX 401, ARTESIA, NM 88211-0401
PO BOX 402, ARTESIA, NM 88211-0402
PO BOX 403, ARTESIA, NM 88211-0403
PO BOX 404, ARTESIA, NM 88211-0404
PO BOX 405, ARTESIA, NM 88211-0405
PO BOX 406, ARTESIA, NM 88211-0406
PO BOX 407, ARTESIA, NM 88211-0407
PO BOX 408, ARTESIA, NM 88211-0408
PO BOX 409, ARTESIA, NM 88211-0409
PO BOX 410, ARTESIA, NM 88211-0410
PO BOX 411, ARTESIA, NM 88211-0411
PO BOX 412, ARTESIA, NM 88211-0412
PO BOX 413, ARTESIA, NM 88211-0413
PO BOX 414, ARTESIA, NM 88211-0414
PO BOX 415, ARTESIA, NM 88211-0415
PO BOX 416, ARTESIA, NM 88211-0416
PO BOX 417, ARTESIA, NM 88211-0417
PO BOX 418, ARTESIA, NM 88211-0418
PO BOX 419, ARTESIA, NM 88211-0419
PO BOX 420, ARTESIA, NM 88211-0420
PO BOX 421, ARTESIA, NM 88211-0421
PO BOX 422, ARTESIA, NM 88211-0422
PO BOX 423, ARTESIA, NM 88211-0423
PO BOX 424, ARTESIA, NM 88211-0424
PO BOX 425, ARTESIA, NM 88211-0425
PO BOX 426, ARTESIA, NM 88211-0426
PO BOX 427, ARTESIA, NM 88211-0427
PO BOX 428, ARTESIA, NM 88211-0428
PO BOX 429, ARTESIA, NM 88211-0429
PO BOX 430, ARTESIA, NM 88211-0430
PO BOX 431, ARTESIA, NM 88211-0431
PO BOX 432, ARTESIA, NM 88211-0432
PO BOX 433, ARTESIA, NM 88211-0433
PO BOX 434, ARTESIA, NM 88211-0434
PO BOX 435, ARTESIA, NM 88211-0435
PO BOX 436, ARTESIA, NM 88211-0436
PO BOX 437, ARTESIA, NM 88211-0437
PO BOX 438, ARTESIA, NM 88211-0438
PO BOX 439, ARTESIA, NM 88211-0439
PO BOX 440, ARTESIA, NM 88211-0440
PO BOX 441, ARTESIA, NM 88211-0441
PO BOX 442, ARTESIA, NM 88211-0442
PO BOX 443, ARTESIA, NM 88211-0443
PO BOX 444, ARTESIA, NM 88211-0444
PO BOX 445, ARTESIA, NM 88211-0445
PO BOX 446, ARTESIA, NM 88211-0446
PO BOX 447, ARTESIA, NM 88211-0447
PO BOX 448, ARTESIA, NM 88211-0448
PO BOX 449, ARTESIA, NM 88211-0449
PO BOX 450, ARTESIA, NM 88211-0450
PO BOX 451, ARTESIA, NM 88211-0451
PO BOX 452, ARTESIA, NM 88211-0452
PO BOX 453, ARTESIA, NM 88211-0453
PO BOX 454, ARTESIA, NM 88211-0454
PO BOX 455, ARTESIA, NM 88211-0455
PO BOX 456, ARTESIA, NM 88211-0456
PO BOX 457, ARTESIA, NM 88211-0457
PO BOX 458, ARTESIA, NM 88211-0458
PO BOX 459, ARTESIA, NM 88211-0459
PO BOX 460, ARTESIA, NM 88211-0460
PO BOX 461, ARTESIA, NM 88211-0461
PO BOX 462, ARTESIA, NM 88211-0462
PO BOX 463, ARTESIA, NM 88211-0463
PO BOX 464, ARTESIA, NM 88211-0464
PO BOX 465, ARTESIA, NM 88211-0465
PO BOX 466, ARTESIA, NM 88211-0466
PO BOX 467, ARTESIA, NM 88211-0467
PO BOX 468, ARTESIA, NM 88211-0468
PO BOX 469, ARTESIA, NM 88211-0469
PO BOX 470, ARTESIA, NM 88211-0470
PO BOX 471, ARTESIA, NM 88211-0471
PO BOX 472, ARTESIA, NM 88211-0472
PO BOX 473, ARTESIA, NM 88211-0473
PO BOX 474, ARTESIA, NM 88211-0474
PO BOX 475, ARTESIA, NM 88211-0475
PO BOX 476, ARTESIA, NM 88211-0476
PO BOX 477, ARTESIA, NM 88211-0477
PO BOX 478, ARTESIA, NM 88211-0478
PO BOX 479, ARTESIA, NM 88211-0479
PO BOX 480, ARTESIA, NM 88211-0480
PO BOX 481, ARTESIA, NM 88211-0481
PO BOX 482, ARTESIA, NM 88211-0482
PO BOX 483, ARTESIA, NM 88211-0483
PO BOX 484, ARTESIA, NM 88211-0484
PO BOX 485, ARTESIA, NM 88211-0485
PO BOX 486, ARTESIA, NM 88211-0486
PO BOX 487, ARTESIA, NM 88211-0487
PO BOX 488, ARTESIA, NM 88211-0488
PO BOX 489, ARTESIA, NM 88211-0489
PO BOX 490, ARTESIA, NM 88211-0490
PO BOX 491, ARTESIA, NM 88211-0491
PO BOX 492, ARTESIA, NM 88211-0492
PO BOX 493, ARTESIA, NM 88211-0493
PO BOX 494, ARTESIA, NM 88211-0494
PO BOX 495, ARTESIA, NM 88211-0495
PO BOX 496, ARTESIA, NM 88211-0496
PO BOX 497, ARTESIA, NM 88211-0497
PO BOX 498, ARTESIA, NM 88211-0498
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