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 481, MOUNTAIN HOME, NC 28758-0481
PO BOX 482, MOUNTAIN HOME, NC 28758-0482
PO BOX 483, MOUNTAIN HOME, NC 28758-0483
PO BOX 484, MOUNTAIN HOME, NC 28758-0484
PO BOX 485, MOUNTAIN HOME, NC 28758-0485
PO BOX 486, MOUNTAIN HOME, NC 28758-0486
PO BOX 487, MOUNTAIN HOME, NC 28758-0487
PO BOX 488, MOUNTAIN HOME, NC 28758-0488
PO BOX 489, MOUNTAIN HOME, NC 28758-0489
PO BOX 490, MOUNTAIN HOME, NC 28758-0490
PO BOX 491, MOUNTAIN HOME, NC 28758-0491
PO BOX 492, MOUNTAIN HOME, NC 28758-0492
PO BOX 493, MOUNTAIN HOME, NC 28758-0493
PO BOX 494, MOUNTAIN HOME, NC 28758-0494
PO BOX 495, MOUNTAIN HOME, NC 28758-0495
PO BOX 496, MOUNTAIN HOME, NC 28758-0496
PO BOX 497, MOUNTAIN HOME, NC 28758-0497
PO BOX 498, MOUNTAIN HOME, NC 28758-0498
PO BOX 499, MOUNTAIN HOME, NC 28758-0499
PO BOX 500, MOUNTAIN HOME, NC 28758-0500
PO BOX 501, MOUNTAIN HOME, NC 28758-0501
PO BOX 502, MOUNTAIN HOME, NC 28758-0502
PO BOX 503, MOUNTAIN HOME, NC 28758-0503
PO BOX 504, MOUNTAIN HOME, NC 28758-0504
PO BOX 505, MOUNTAIN HOME, NC 28758-0505
PO BOX 506, MOUNTAIN HOME, NC 28758-0506
PO BOX 507, MOUNTAIN HOME, NC 28758-0507
PO BOX 508, MOUNTAIN HOME, NC 28758-0508
PO BOX 509, MOUNTAIN HOME, NC 28758-0509
PO BOX 510, MOUNTAIN HOME, NC 28758-0510
PO BOX 511, MOUNTAIN HOME, NC 28758-0511
PO BOX 512, MOUNTAIN HOME, NC 28758-0512
PO BOX 513, MOUNTAIN HOME, NC 28758-0513
PO BOX 514, MOUNTAIN HOME, NC 28758-0514
PO BOX 515, MOUNTAIN HOME, NC 28758-0515
PO BOX 516, MOUNTAIN HOME, NC 28758-0516
PO BOX 517, MOUNTAIN HOME, NC 28758-0517
PO BOX 518, MOUNTAIN HOME, NC 28758-0518
PO BOX 519, MOUNTAIN HOME, NC 28758-0519
PO BOX 520, MOUNTAIN HOME, NC 28758-0520
PO BOX 521, MOUNTAIN HOME, NC 28758-0521
PO BOX 522, MOUNTAIN HOME, NC 28758-0522
PO BOX 523, MOUNTAIN HOME, NC 28758-0523
PO BOX 524, MOUNTAIN HOME, NC 28758-0524
PO BOX 525, MOUNTAIN HOME, NC 28758-0525
PO BOX 526, MOUNTAIN HOME, NC 28758-0526
PO BOX 527, MOUNTAIN HOME, NC 28758-0527
PO BOX 528, MOUNTAIN HOME, NC 28758-0528
PO BOX 529, MOUNTAIN HOME, NC 28758-0529
PO BOX 530, MOUNTAIN HOME, NC 28758-0530
PO BOX 531, MOUNTAIN HOME, NC 28758-0531
PO BOX 532, MOUNTAIN HOME, NC 28758-0532
PO BOX 533, MOUNTAIN HOME, NC 28758-0533
PO BOX 534, MOUNTAIN HOME, NC 28758-0534
PO BOX 535, MOUNTAIN HOME, NC 28758-0535
PO BOX 536, MOUNTAIN HOME, NC 28758-0536
PO BOX 537, MOUNTAIN HOME, NC 28758-0537
PO BOX 538, MOUNTAIN HOME, NC 28758-0538
PO BOX 539, MOUNTAIN HOME, NC 28758-0539
PO BOX 540, MOUNTAIN HOME, NC 28758-0540
PO BOX 541, MOUNTAIN HOME, NC 28758-0541
PO BOX 542, MOUNTAIN HOME, NC 28758-0542
PO BOX 543, MOUNTAIN HOME, NC 28758-0543
PO BOX 544, MOUNTAIN HOME, NC 28758-0544
PO BOX 545, MOUNTAIN HOME, NC 28758-0545
PO BOX 546, MOUNTAIN HOME, NC 28758-0546
PO BOX 547, MOUNTAIN HOME, NC 28758-0547
PO BOX 548, MOUNTAIN HOME, NC 28758-0548
PO BOX 549, MOUNTAIN HOME, NC 28758-0549
PO BOX 550, MOUNTAIN HOME, NC 28758-0550
PO BOX 551, MOUNTAIN HOME, NC 28758-0551
PO BOX 552, MOUNTAIN HOME, NC 28758-0552
PO BOX 553, MOUNTAIN HOME, NC 28758-0553
PO BOX 554, MOUNTAIN HOME, NC 28758-0554
PO BOX 555, MOUNTAIN HOME, NC 28758-0555
PO BOX 556, MOUNTAIN HOME, NC 28758-0556
PO BOX 557, MOUNTAIN HOME, NC 28758-0557
PO BOX 558, MOUNTAIN HOME, NC 28758-0558
PO BOX 559, MOUNTAIN HOME, NC 28758-0559
PO BOX 560, MOUNTAIN HOME, NC 28758-0560
PO BOX 561, MOUNTAIN HOME, NC 28758-0561
PO BOX 562, MOUNTAIN HOME, NC 28758-0562
PO BOX 563, MOUNTAIN HOME, NC 28758-0563
PO BOX 564, MOUNTAIN HOME, NC 28758-0564
PO BOX 565, MOUNTAIN HOME, NC 28758-0565
PO BOX 566, MOUNTAIN HOME, NC 28758-0566
PO BOX 567, MOUNTAIN HOME, NC 28758-0567
PO BOX 568, MOUNTAIN HOME, NC 28758-0568
PO BOX 569, MOUNTAIN HOME, NC 28758-0569
PO BOX 570, MOUNTAIN HOME, NC 28758-0570
PO BOX 571, MOUNTAIN HOME, NC 28758-0571
PO BOX 572, MOUNTAIN HOME, NC 28758-0572
PO BOX 573, MOUNTAIN HOME, NC 28758-0573
PO BOX 574, MOUNTAIN HOME, NC 28758-0574
PO BOX 575, MOUNTAIN HOME, NC 28758-0575
PO BOX 576, MOUNTAIN HOME, NC 28758-0576
PO BOX 577, MOUNTAIN HOME, NC 28758-0577
PO BOX 578, MOUNTAIN HOME, NC 28758-0578
PO BOX 579, MOUNTAIN HOME, NC 28758-0579
PO BOX 580, MOUNTAIN HOME, NC 28758-0580
PO BOX 581, MOUNTAIN HOME, NC 28758-0581
PO BOX 582, MOUNTAIN HOME, NC 28758-0582
PO BOX 583, MOUNTAIN HOME, NC 28758-0583
PO BOX 584, MOUNTAIN HOME, NC 28758-0584
PO BOX 585, MOUNTAIN HOME, NC 28758-0585
PO BOX 586, MOUNTAIN HOME, NC 28758-0586
PO BOX 587, MOUNTAIN HOME, NC 28758-0587
PO BOX 588, MOUNTAIN HOME, NC 28758-0588
PO BOX 589, MOUNTAIN HOME, NC 28758-0589
PO BOX 590, MOUNTAIN HOME, NC 28758-0590
PO BOX 591, MOUNTAIN HOME, NC 28758-0591
PO BOX 592, MOUNTAIN HOME, NC 28758-0592
PO BOX 593, MOUNTAIN HOME, NC 28758-0593
PO BOX 594, MOUNTAIN HOME, NC 28758-0594
PO BOX 595, MOUNTAIN HOME, NC 28758-0595
PO BOX 596, MOUNTAIN HOME, NC 28758-0596
PO BOX 597, MOUNTAIN HOME, NC 28758-0597
PO BOX 598, MOUNTAIN HOME, NC 28758-0598
PO BOX 599, MOUNTAIN HOME, NC 28758-0599
PO BOX 600, MOUNTAIN HOME, NC 28758-0600
PO BOX 601, MOUNTAIN HOME, NC 28758-0601
PO BOX 602, MOUNTAIN HOME, NC 28758-0602
PO BOX 603, MOUNTAIN HOME, NC 28758-0603
PO BOX 604, MOUNTAIN HOME, NC 28758-0604
PO BOX 605, MOUNTAIN HOME, NC 28758-0605
PO BOX 606, MOUNTAIN HOME, NC 28758-0606
PO BOX 607, MOUNTAIN HOME, NC 28758-0607
PO BOX 608, MOUNTAIN HOME, NC 28758-0608
PO BOX 609, MOUNTAIN HOME, NC 28758-0609
PO BOX 610, MOUNTAIN HOME, NC 28758-0610
PO BOX 611, MOUNTAIN HOME, NC 28758-0611
PO BOX 612, MOUNTAIN HOME, NC 28758-0612
PO BOX 613, MOUNTAIN HOME, NC 28758-0613
PO BOX 614, MOUNTAIN HOME, NC 28758-0614
PO BOX 615, MOUNTAIN HOME, NC 28758-0615
PO BOX 616, MOUNTAIN HOME, NC 28758-0616
PO BOX 617, MOUNTAIN HOME, NC 28758-0617
PO BOX 618, MOUNTAIN HOME, NC 28758-0618
PO BOX 619, MOUNTAIN HOME, NC 28758-0619
PO BOX 620, MOUNTAIN HOME, NC 28758-0620
PO BOX 621, MOUNTAIN HOME, NC 28758-0621
PO BOX 622, MOUNTAIN HOME, NC 28758-0622
PO BOX 623, MOUNTAIN HOME, NC 28758-0623
PO BOX 624, MOUNTAIN HOME, NC 28758-0624
PO BOX 625, MOUNTAIN HOME, NC 28758-0625
PO BOX 626, MOUNTAIN HOME, NC 28758-0626
PO BOX 627, MOUNTAIN HOME, NC 28758-0627
PO BOX 628, MOUNTAIN HOME, NC 28758-0628
PO BOX 629, MOUNTAIN HOME, NC 28758-0629
PO BOX 630, MOUNTAIN HOME, NC 28758-0630
PO BOX 631, MOUNTAIN HOME, NC 28758-0631
PO BOX 632, MOUNTAIN HOME, NC 28758-0632
PO BOX 633, MOUNTAIN HOME, NC 28758-0633
PO BOX 634, MOUNTAIN HOME, NC 28758-0634
PO BOX 635, MOUNTAIN HOME, NC 28758-0635
PO BOX 636, MOUNTAIN HOME, NC 28758-0636
PO BOX 637, MOUNTAIN HOME, NC 28758-0637
PO BOX 638, MOUNTAIN HOME, NC 28758-0638
PO BOX 639, MOUNTAIN HOME, NC 28758-0639
PO BOX 640, MOUNTAIN HOME, NC 28758-0640
PO BOX 641, MOUNTAIN HOME, NC 28758-0641
PO BOX 642, MOUNTAIN HOME, NC 28758-0642
PO BOX 643, MOUNTAIN HOME, NC 28758-0643
PO BOX 644, MOUNTAIN HOME, NC 28758-0644
PO BOX 645, MOUNTAIN HOME, NC 28758-0645
PO BOX 646, MOUNTAIN HOME, NC 28758-0646
PO BOX 647, MOUNTAIN HOME, NC 28758-0647
PO BOX 648, MOUNTAIN HOME, NC 28758-0648
PO BOX 649, MOUNTAIN HOME, NC 28758-0649
PO BOX 650, MOUNTAIN HOME, NC 28758-0650
PO BOX 651, MOUNTAIN HOME, NC 28758-0651
PO BOX 652, MOUNTAIN HOME, NC 28758-0652
PO BOX 653, MOUNTAIN HOME, NC 28758-0653
PO BOX 654, MOUNTAIN HOME, NC 28758-0654
PO BOX 655, MOUNTAIN HOME, NC 28758-0655
PO BOX 656, MOUNTAIN HOME, NC 28758-0656
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