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, CLEMSON, SC 29633-0481
PO BOX 482, CLEMSON, SC 29633-0482
PO BOX 483, CLEMSON, SC 29633-0483
PO BOX 484, CLEMSON, SC 29633-0484
PO BOX 485, CLEMSON, SC 29633-0485
PO BOX 486, CLEMSON, SC 29633-0486
PO BOX 487, CLEMSON, SC 29633-0487
PO BOX 488, CLEMSON, SC 29633-0488
PO BOX 489, CLEMSON, SC 29633-0489
PO BOX 490, CLEMSON, SC 29633-0490
PO BOX 491, CLEMSON, SC 29633-0491
PO BOX 492, CLEMSON, SC 29633-0492
PO BOX 493, CLEMSON, SC 29633-0493
PO BOX 494, CLEMSON, SC 29633-0494
PO BOX 495, CLEMSON, SC 29633-0495
PO BOX 496, CLEMSON, SC 29633-0496
PO BOX 497, CLEMSON, SC 29633-0497
PO BOX 498, CLEMSON, SC 29633-0498
PO BOX 499, CLEMSON, SC 29633-0499
PO BOX 500, CLEMSON, SC 29633-0500
PO BOX 501, CLEMSON, SC 29633-0501
PO BOX 502, CLEMSON, SC 29633-0502
PO BOX 503, CLEMSON, SC 29633-0503
PO BOX 504, CLEMSON, SC 29633-0504
PO BOX 505, CLEMSON, SC 29633-0505
PO BOX 506, CLEMSON, SC 29633-0506
PO BOX 507, CLEMSON, SC 29633-0507
PO BOX 508, CLEMSON, SC 29633-0508
PO BOX 509, CLEMSON, SC 29633-0509
PO BOX 510, CLEMSON, SC 29633-0510
PO BOX 511, CLEMSON, SC 29633-0511
PO BOX 512, CLEMSON, SC 29633-0512
PO BOX 513, CLEMSON, SC 29633-0513
PO BOX 514, CLEMSON, SC 29633-0514
PO BOX 515, CLEMSON, SC 29633-0515
PO BOX 516, CLEMSON, SC 29633-0516
PO BOX 517, CLEMSON, SC 29633-0517
PO BOX 518, CLEMSON, SC 29633-0518
PO BOX 519, CLEMSON, SC 29633-0519
PO BOX 520, CLEMSON, SC 29633-0520
PO BOX 521, CLEMSON, SC 29633-0521
PO BOX 522, CLEMSON, SC 29633-0522
PO BOX 523, CLEMSON, SC 29633-0523
PO BOX 524, CLEMSON, SC 29633-0524
PO BOX 525, CLEMSON, SC 29633-0525
PO BOX 526, CLEMSON, SC 29633-0526
PO BOX 527, CLEMSON, SC 29633-0527
PO BOX 528, CLEMSON, SC 29633-0528
PO BOX 529, CLEMSON, SC 29633-0529
PO BOX 530, CLEMSON, SC 29633-0530
PO BOX 531, CLEMSON, SC 29633-0531
PO BOX 532, CLEMSON, SC 29633-0532
PO BOX 533, CLEMSON, SC 29633-0533
PO BOX 534, CLEMSON, SC 29633-0534
PO BOX 535, CLEMSON, SC 29633-0535
PO BOX 536, CLEMSON, SC 29633-0536
PO BOX 537, CLEMSON, SC 29633-0537
PO BOX 538, CLEMSON, SC 29633-0538
PO BOX 539, CLEMSON, SC 29633-0539
PO BOX 540, CLEMSON, SC 29633-0540
PO BOX 541, CLEMSON, SC 29633-0541
PO BOX 542, CLEMSON, SC 29633-0542
PO BOX 543, CLEMSON, SC 29633-0543
PO BOX 544, CLEMSON, SC 29633-0544
PO BOX 545, CLEMSON, SC 29633-0545
PO BOX 546, CLEMSON, SC 29633-0546
PO BOX 547, CLEMSON, SC 29633-0547
PO BOX 548, CLEMSON, SC 29633-0548
PO BOX 549, CLEMSON, SC 29633-0549
PO BOX 550, CLEMSON, SC 29633-0550
PO BOX 551, CLEMSON, SC 29633-0551
PO BOX 552, CLEMSON, SC 29633-0552
PO BOX 553, CLEMSON, SC 29633-0553
PO BOX 554, CLEMSON, SC 29633-0554
PO BOX 555, CLEMSON, SC 29633-0555
PO BOX 556, CLEMSON, SC 29633-0556
PO BOX 557, CLEMSON, SC 29633-0557
PO BOX 558, CLEMSON, SC 29633-0558
PO BOX 559, CLEMSON, SC 29633-0559
PO BOX 560, CLEMSON, SC 29633-0560
PO BOX 561, CLEMSON, SC 29633-0561
PO BOX 562, CLEMSON, SC 29633-0562
PO BOX 563, CLEMSON, SC 29633-0563
PO BOX 564, CLEMSON, SC 29633-0564
PO BOX 565, CLEMSON, SC 29633-0565
PO BOX 566, CLEMSON, SC 29633-0566
PO BOX 567, CLEMSON, SC 29633-0567
PO BOX 568, CLEMSON, SC 29633-0568
PO BOX 569, CLEMSON, SC 29633-0569
PO BOX 570, CLEMSON, SC 29633-0570
PO BOX 571, CLEMSON, SC 29633-0571
PO BOX 572, CLEMSON, SC 29633-0572
PO BOX 573, CLEMSON, SC 29633-0573
PO BOX 574, CLEMSON, SC 29633-0574
PO BOX 575, CLEMSON, SC 29633-0575
PO BOX 576, CLEMSON, SC 29633-0576
PO BOX 577, CLEMSON, SC 29633-0577
PO BOX 578, CLEMSON, SC 29633-0578
PO BOX 579, CLEMSON, SC 29633-0579
PO BOX 580, CLEMSON, SC 29633-0580
PO BOX 581, CLEMSON, SC 29633-0581
PO BOX 582, CLEMSON, SC 29633-0582
PO BOX 583, CLEMSON, SC 29633-0583
PO BOX 584, CLEMSON, SC 29633-0584
PO BOX 585, CLEMSON, SC 29633-0585
PO BOX 586, CLEMSON, SC 29633-0586
PO BOX 587, CLEMSON, SC 29633-0587
PO BOX 588, CLEMSON, SC 29633-0588
PO BOX 589, CLEMSON, SC 29633-0589
PO BOX 590, CLEMSON, SC 29633-0590
PO BOX 591, CLEMSON, SC 29633-0591
PO BOX 592, CLEMSON, SC 29633-0592
PO BOX 593, CLEMSON, SC 29633-0593
PO BOX 594, CLEMSON, SC 29633-0594
PO BOX 595, CLEMSON, SC 29633-0595
PO BOX 596, CLEMSON, SC 29633-0596
PO BOX 597, CLEMSON, SC 29633-0597
PO BOX 598, CLEMSON, SC 29633-0598
PO BOX 599, CLEMSON, SC 29633-0599
PO BOX 600, CLEMSON, SC 29633-0600
PO BOX 601, CLEMSON, SC 29633-0601
PO BOX 602, CLEMSON, SC 29633-0602
PO BOX 603, CLEMSON, SC 29633-0603
PO BOX 604, CLEMSON, SC 29633-0604
PO BOX 605, CLEMSON, SC 29633-0605
PO BOX 606, CLEMSON, SC 29633-0606
PO BOX 607, CLEMSON, SC 29633-0607
PO BOX 608, CLEMSON, SC 29633-0608
PO BOX 609, CLEMSON, SC 29633-0609
PO BOX 610, CLEMSON, SC 29633-0610
PO BOX 611, CLEMSON, SC 29633-0611
PO BOX 612, CLEMSON, SC 29633-0612
PO BOX 613, CLEMSON, SC 29633-0613
PO BOX 614, CLEMSON, SC 29633-0614
PO BOX 615, CLEMSON, SC 29633-0615
PO BOX 616, CLEMSON, SC 29633-0616
PO BOX 617, CLEMSON, SC 29633-0617
PO BOX 618, CLEMSON, SC 29633-0618
PO BOX 619, CLEMSON, SC 29633-0619
PO BOX 620, CLEMSON, SC 29633-0620
PO BOX 621, CLEMSON, SC 29633-0621
PO BOX 622, CLEMSON, SC 29633-0622
PO BOX 623, CLEMSON, SC 29633-0623
PO BOX 624, CLEMSON, SC 29633-0624
PO BOX 625, CLEMSON, SC 29633-0625
PO BOX 626, CLEMSON, SC 29633-0626
PO BOX 627, CLEMSON, SC 29633-0627
PO BOX 628, CLEMSON, SC 29633-0628
PO BOX 629, CLEMSON, SC 29633-0629
PO BOX 630, CLEMSON, SC 29633-0630
PO BOX 631, CLEMSON, SC 29633-0631
PO BOX 632, CLEMSON, SC 29633-0632
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