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 501, TENAKEE SPRINGS, AK 99841-0501
PO BOX 502, TENAKEE SPRINGS, AK 99841-0502
PO BOX 503, TENAKEE SPRINGS, AK 99841-0503
PO BOX 504, TENAKEE SPRINGS, AK 99841-0504
PO BOX 505, TENAKEE SPRINGS, AK 99841-0505
PO BOX 506, TENAKEE SPRINGS, AK 99841-0506
PO BOX 507, TENAKEE SPRINGS, AK 99841-0507
PO BOX 508, TENAKEE SPRINGS, AK 99841-0508
PO BOX 509, TENAKEE SPRINGS, AK 99841-0509
PO BOX 510, TENAKEE SPRINGS, AK 99841-0510
PO BOX 511, TENAKEE SPRINGS, AK 99841-0511
PO BOX 512, TENAKEE SPRINGS, AK 99841-0512
PO BOX 513, TENAKEE SPRINGS, AK 99841-0513
PO BOX 514, TENAKEE SPRINGS, AK 99841-0514
PO BOX 515, TENAKEE SPRINGS, AK 99841-0515
PO BOX 516, TENAKEE SPRINGS, AK 99841-0516
PO BOX 517, TENAKEE SPRINGS, AK 99841-0517
PO BOX 518, TENAKEE SPRINGS, AK 99841-0518
PO BOX 519, TENAKEE SPRINGS, AK 99841-0519
PO BOX 520, TENAKEE SPRINGS, AK 99841-0520
PO BOX 521, TENAKEE SPRINGS, AK 99841-0521
PO BOX 522, TENAKEE SPRINGS, AK 99841-0522
PO BOX 523, TENAKEE SPRINGS, AK 99841-0523
PO BOX 524, TENAKEE SPRINGS, AK 99841-0524
PO BOX 525, TENAKEE SPRINGS, AK 99841-0525
PO BOX 526, TENAKEE SPRINGS, AK 99841-0526
PO BOX 527, TENAKEE SPRINGS, AK 99841-0527
PO BOX 528, TENAKEE SPRINGS, AK 99841-0528
PO BOX 529, TENAKEE SPRINGS, AK 99841-0529
PO BOX 530, TENAKEE SPRINGS, AK 99841-0530
PO BOX 531, TENAKEE SPRINGS, AK 99841-0531
PO BOX 532, TENAKEE SPRINGS, AK 99841-0532
PO BOX 533, TENAKEE SPRINGS, AK 99841-0533
PO BOX 534, TENAKEE SPRINGS, AK 99841-0534
PO BOX 535, TENAKEE SPRINGS, AK 99841-0535
PO BOX 536, TENAKEE SPRINGS, AK 99841-0536
PO BOX 537, TENAKEE SPRINGS, AK 99841-0537
PO BOX 538, TENAKEE SPRINGS, AK 99841-0538
PO BOX 539, TENAKEE SPRINGS, AK 99841-0539
PO BOX 540, TENAKEE SPRINGS, AK 99841-0540
PO BOX 541, TENAKEE SPRINGS, AK 99841-0541
PO BOX 542, TENAKEE SPRINGS, AK 99841-0542
PO BOX 543, TENAKEE SPRINGS, AK 99841-0543
PO BOX 544, TENAKEE SPRINGS, AK 99841-0544
PO BOX 545, TENAKEE SPRINGS, AK 99841-0545
PO BOX 546, TENAKEE SPRINGS, AK 99841-0546
PO BOX 547, TENAKEE SPRINGS, AK 99841-0547
PO BOX 548, TENAKEE SPRINGS, AK 99841-0548
PO BOX 549, TENAKEE SPRINGS, AK 99841-0549
PO BOX 550, TENAKEE SPRINGS, AK 99841-0550
PO BOX 551, TENAKEE SPRINGS, AK 99841-0551
PO BOX 552, TENAKEE SPRINGS, AK 99841-0552
PO BOX 553, TENAKEE SPRINGS, AK 99841-0553
PO BOX 554, TENAKEE SPRINGS, AK 99841-0554
PO BOX 555, TENAKEE SPRINGS, AK 99841-0555
PO BOX 556, TENAKEE SPRINGS, AK 99841-0556
PO BOX 557, TENAKEE SPRINGS, AK 99841-0557
PO BOX 558, TENAKEE SPRINGS, AK 99841-0558
PO BOX 559, TENAKEE SPRINGS, AK 99841-0559
PO BOX 560, TENAKEE SPRINGS, AK 99841-0560
PO BOX 561, TENAKEE SPRINGS, AK 99841-0561
PO BOX 562, TENAKEE SPRINGS, AK 99841-0562
PO BOX 563, TENAKEE SPRINGS, AK 99841-0563
PO BOX 564, TENAKEE SPRINGS, AK 99841-0564
PO BOX 565, TENAKEE SPRINGS, AK 99841-0565
PO BOX 566, TENAKEE SPRINGS, AK 99841-0566
PO BOX 567, TENAKEE SPRINGS, AK 99841-0567
PO BOX 568, TENAKEE SPRINGS, AK 99841-0568
PO BOX 569, TENAKEE SPRINGS, AK 99841-0569
PO BOX 570, TENAKEE SPRINGS, AK 99841-0570
PO BOX 571, TENAKEE SPRINGS, AK 99841-0571
PO BOX 572, TENAKEE SPRINGS, AK 99841-0572
PO BOX 573, TENAKEE SPRINGS, AK 99841-0573
PO BOX 574, TENAKEE SPRINGS, AK 99841-0574
PO BOX 575, TENAKEE SPRINGS, AK 99841-0575
PO BOX 576, TENAKEE SPRINGS, AK 99841-0576
PO BOX 577, TENAKEE SPRINGS, AK 99841-0577
PO BOX 578, TENAKEE SPRINGS, AK 99841-0578
PO BOX 579, TENAKEE SPRINGS, AK 99841-0579
PO BOX 580, TENAKEE SPRINGS, AK 99841-0580
PO BOX 581, TENAKEE SPRINGS, AK 99841-0581
PO BOX 582, TENAKEE SPRINGS, AK 99841-0582
PO BOX 583, TENAKEE SPRINGS, AK 99841-0583
PO BOX 584, TENAKEE SPRINGS, AK 99841-0584
PO BOX 585, TENAKEE SPRINGS, AK 99841-0585
PO BOX 586, TENAKEE SPRINGS, AK 99841-0586
PO BOX 587, TENAKEE SPRINGS, AK 99841-0587
PO BOX 588, TENAKEE SPRINGS, AK 99841-0588
PO BOX 589, TENAKEE SPRINGS, AK 99841-0589
PO BOX 590, TENAKEE SPRINGS, AK 99841-0590
PO BOX 591, TENAKEE SPRINGS, AK 99841-0591
PO BOX 592, TENAKEE SPRINGS, AK 99841-0592
PO BOX 593, TENAKEE SPRINGS, AK 99841-0593
PO BOX 594, TENAKEE SPRINGS, AK 99841-0594
PO BOX 595, TENAKEE SPRINGS, AK 99841-0595
PO BOX 596, TENAKEE SPRINGS, AK 99841-0596
PO BOX 597, TENAKEE SPRINGS, AK 99841-0597
PO BOX 598, TENAKEE SPRINGS, AK 99841-0598
PO BOX 599, TENAKEE SPRINGS, AK 99841-0599
PO BOX 600, TENAKEE SPRINGS, AK 99841-0600
PO BOX 601, TENAKEE SPRINGS, AK 99841-0601
PO BOX 602, TENAKEE SPRINGS, AK 99841-0602
PO BOX 603, TENAKEE SPRINGS, AK 99841-0603
PO BOX 604, TENAKEE SPRINGS, AK 99841-0604
PO BOX 605, TENAKEE SPRINGS, AK 99841-0605
PO BOX 606, TENAKEE SPRINGS, AK 99841-0606
PO BOX 607, TENAKEE SPRINGS, AK 99841-0607
PO BOX 608, TENAKEE SPRINGS, AK 99841-0608
PO BOX 609, TENAKEE SPRINGS, AK 99841-0609
PO BOX 610, TENAKEE SPRINGS, AK 99841-0610
PO BOX 611, TENAKEE SPRINGS, AK 99841-0611
PO BOX 612, TENAKEE SPRINGS, AK 99841-0612
PO BOX 613, TENAKEE SPRINGS, AK 99841-0613
PO BOX 614, TENAKEE SPRINGS, AK 99841-0614
PO BOX 615, TENAKEE SPRINGS, AK 99841-0615
PO BOX 616, TENAKEE SPRINGS, AK 99841-0616
PO BOX 617, TENAKEE SPRINGS, AK 99841-0617
PO BOX 618, TENAKEE SPRINGS, AK 99841-0618
PO BOX 619, TENAKEE SPRINGS, AK 99841-0619
PO BOX 620, TENAKEE SPRINGS, AK 99841-0620
PO BOX 621, TENAKEE SPRINGS, AK 99841-0621
PO BOX 622, TENAKEE SPRINGS, AK 99841-0622
PO BOX 623, TENAKEE SPRINGS, AK 99841-0623
PO BOX 624, TENAKEE SPRINGS, AK 99841-0624
PO BOX 625, TENAKEE SPRINGS, AK 99841-0625
PO BOX 626, TENAKEE SPRINGS, AK 99841-0626
PO BOX 627, TENAKEE SPRINGS, AK 99841-0627
PO BOX 628, TENAKEE SPRINGS, AK 99841-0628
PO BOX 629, TENAKEE SPRINGS, AK 99841-0629
PO BOX 630, TENAKEE SPRINGS, AK 99841-0630
PO BOX 631, TENAKEE SPRINGS, AK 99841-0631
PO BOX 632, TENAKEE SPRINGS, AK 99841-0632
PO BOX 633, TENAKEE SPRINGS, AK 99841-0633
PO BOX 634, TENAKEE SPRINGS, AK 99841-0634
PO BOX 635, TENAKEE SPRINGS, AK 99841-0635
PO BOX 636, TENAKEE SPRINGS, AK 99841-0636
PO BOX 637, TENAKEE SPRINGS, AK 99841-0637
PO BOX 638, TENAKEE SPRINGS, AK 99841-0638
PO BOX 639, TENAKEE SPRINGS, AK 99841-0639
PO BOX 640, TENAKEE SPRINGS, AK 99841-0640
PO BOX 641, TENAKEE SPRINGS, AK 99841-0641
PO BOX 642, TENAKEE SPRINGS, AK 99841-0642
PO BOX 643, TENAKEE SPRINGS, AK 99841-0643
PO BOX 644, TENAKEE SPRINGS, AK 99841-0644