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 29600, PHOENIX, AZ 85038-9600
PO BOX 29601, PHOENIX, AZ 85038-9601
PO BOX 29602, PHOENIX, AZ 85038-9602
PO BOX 29603, PHOENIX, AZ 85038-9603
PO BOX 29604, PHOENIX, AZ 85038-9604
PO BOX 29605, PHOENIX, AZ 85038-9605
PO BOX 29606, PHOENIX, AZ 85038-9606
PO BOX 29607, PHOENIX, AZ 85038-9607
PO BOX 29608, PHOENIX, AZ 85038-9608
PO BOX 29609, PHOENIX, AZ 85038-9609
PO BOX 29610, PHOENIX, AZ 85038-9610
PO BOX 29611, PHOENIX, AZ 85038-9611
PO BOX 29612, PHOENIX, AZ 85038-9612
PO BOX 29613, PHOENIX, AZ 85038-9613
PO BOX 29614, PHOENIX, AZ 85038-9614
PO BOX 29615, PHOENIX, AZ 85038-9615
PO BOX 29616, PHOENIX, AZ 85038-9616
PO BOX 29617, PHOENIX, AZ 85038-9617
PO BOX 29618, PHOENIX, AZ 85038-9618
PO BOX 29619, PHOENIX, AZ 85038-9619
PO BOX 29620, PHOENIX, AZ 85038-9620
PO BOX 29621, PHOENIX, AZ 85038-9621
PO BOX 29622, PHOENIX, AZ 85038-9622
PO BOX 29623, PHOENIX, AZ 85038-9623
PO BOX 29624, PHOENIX, AZ 85038-9624
PO BOX 29625, PHOENIX, AZ 85038-9625
PO BOX 29626, PHOENIX, AZ 85038-9626
PO BOX 29627, PHOENIX, AZ 85038-9627
PO BOX 29628, PHOENIX, AZ 85038-9628
PO BOX 29629, PHOENIX, AZ 85038-9629
PO BOX 29630, PHOENIX, AZ 85038-9630
PO BOX 29631, PHOENIX, AZ 85038-9631
PO BOX 29632, PHOENIX, AZ 85038-9632
PO BOX 29633, PHOENIX, AZ 85038-9633
PO BOX 29634, PHOENIX, AZ 85038-9634
PO BOX 29635, PHOENIX, AZ 85038-9635
PO BOX 29636, PHOENIX, AZ 85038-9636
PO BOX 29637, PHOENIX, AZ 85038-9637
PO BOX 29638, PHOENIX, AZ 85038-9638
PO BOX 29639, PHOENIX, AZ 85038-9639
PO BOX 29640, PHOENIX, AZ 85038-9640
PO BOX 29641, PHOENIX, AZ 85038-9641
PO BOX 29642, PHOENIX, AZ 85038-9642
PO BOX 29643, PHOENIX, AZ 85038-9643
PO BOX 29644, PHOENIX, AZ 85038-9644
PO BOX 29645, PHOENIX, AZ 85038-9645
PO BOX 29646, PHOENIX, AZ 85038-9646
PO BOX 29647, PHOENIX, AZ 85038-9647
PO BOX 29648, PHOENIX, AZ 85038-9648
PO BOX 29649, PHOENIX, AZ 85038-9649
PO BOX 29650, PHOENIX, AZ 85038-9650
PO BOX 29651, PHOENIX, AZ 85038-9651
PO BOX 29652, PHOENIX, AZ 85038-9652
PO BOX 29653, PHOENIX, AZ 85038-9653
PO BOX 29654, PHOENIX, AZ 85038-9654
PO BOX 29655, PHOENIX, AZ 85038-9655
PO BOX 29656, PHOENIX, AZ 85038-9656
PO BOX 29657, PHOENIX, AZ 85038-9657
PO BOX 29658, PHOENIX, AZ 85038-9658
PO BOX 29659, PHOENIX, AZ 85038-9659
PO BOX 29660, PHOENIX, AZ 85038-9660
PO BOX 29661, PHOENIX, AZ 85038-9661
PO BOX 29662, PHOENIX, AZ 85038-9662
PO BOX 29663, PHOENIX, AZ 85038-9663
PO BOX 29664, PHOENIX, AZ 85038-9664
PO BOX 29665, PHOENIX, AZ 85038-9665
PO BOX 29666, PHOENIX, AZ 85038-9666
PO BOX 29667, PHOENIX, AZ 85038-9667
PO BOX 29668, PHOENIX, AZ 85038-9668
PO BOX 29669, PHOENIX, AZ 85038-9669
PO BOX 29670, PHOENIX, AZ 85038-9670
PO BOX 29671, PHOENIX, AZ 85038-9671
PO BOX 29672, PHOENIX, AZ 85038-9672
PO BOX 29673, PHOENIX, AZ 85038-9673
PO BOX 29674, PHOENIX, AZ 85038-9674
PO BOX 29675, PHOENIX, AZ 85038-9675
PO BOX 29676, PHOENIX, AZ 85038-9676
PO BOX 29677, PHOENIX, AZ 85038-9677
PO BOX 29678, PHOENIX, AZ 85038-9678
PO BOX 29679, PHOENIX, AZ 85038-9679
PO BOX 29680, PHOENIX, AZ 85038-9680
PO BOX 29681, PHOENIX, AZ 85038-9681
PO BOX 29682, PHOENIX, AZ 85038-9682
PO BOX 29683, PHOENIX, AZ 85038-9683
PO BOX 29684, PHOENIX, AZ 85038-9684
PO BOX 29685, PHOENIX, AZ 85038-9685
PO BOX 29686, PHOENIX, AZ 85038-9686
PO BOX 29687, PHOENIX, AZ 85038-9687
PO BOX 29688, PHOENIX, AZ 85038-9688
PO BOX 29689, PHOENIX, AZ 85038-9689
PO BOX 29690, PHOENIX, AZ 85038-9690
PO BOX 29691, PHOENIX, AZ 85038-9691
PO BOX 29692, PHOENIX, AZ 85038-9692
PO BOX 29693, PHOENIX, AZ 85038-9693
PO BOX 29694, PHOENIX, AZ 85038-9694
PO BOX 29695, PHOENIX, AZ 85038-9695
PO BOX 29696, PHOENIX, AZ 85038-9696
PO BOX 29697, PHOENIX, AZ 85038-9697
PO BOX 29698, PHOENIX, AZ 85038-9698
PO BOX 29699, PHOENIX, AZ 85038-9699
PO BOX 29700, PHOENIX, AZ 85038-9700
PO BOX 29701, PHOENIX, AZ 85038-9701
PO BOX 29702, PHOENIX, AZ 85038-9702
PO BOX 29703, PHOENIX, AZ 85038-9703
PO BOX 29704, PHOENIX, AZ 85038-9704
PO BOX 29705, PHOENIX, AZ 85038-9705
PO BOX 29706, PHOENIX, AZ 85038-9706
PO BOX 29707, PHOENIX, AZ 85038-9707
PO BOX 29708, PHOENIX, AZ 85038-9708
PO BOX 29709, PHOENIX, AZ 85038-9709
PO BOX 29710, PHOENIX, AZ 85038-9710
PO BOX 29711, PHOENIX, AZ 85038-9711
PO BOX 29712, PHOENIX, AZ 85038-9712
PO BOX 29713, PHOENIX, AZ 85038-9713
PO BOX 29714, PHOENIX, AZ 85038-9714
PO BOX 29715, PHOENIX, AZ 85038-9715
PO BOX 29716, PHOENIX, AZ 85038-9716
PO BOX 29717, PHOENIX, AZ 85038-9717
PO BOX 29718, PHOENIX, AZ 85038-9718
PO BOX 29719, PHOENIX, AZ 85038-9719
PO BOX 29720, PHOENIX, AZ 85038-9720
PO BOX 29721, PHOENIX, AZ 85038-9721
PO BOX 29722, PHOENIX, AZ 85038-9722
PO BOX 29723, PHOENIX, AZ 85038-9723
PO BOX 29724, PHOENIX, AZ 85038-9724
PO BOX 29725, PHOENIX, AZ 85038-9725
PO BOX 29726, PHOENIX, AZ 85038-9726
PO BOX 29727, PHOENIX, AZ 85038-9727
PO BOX 29728, PHOENIX, AZ 85038-9728
PO BOX 29729, PHOENIX, AZ 85038-9729
PO BOX 29730, PHOENIX, AZ 85038-9730
PO BOX 29731, PHOENIX, AZ 85038-9731
PO BOX 29732, PHOENIX, AZ 85038-9732
PO BOX 29733, PHOENIX, AZ 85038-9733
PO BOX 29734, PHOENIX, AZ 85038-9734
PO BOX 29735, PHOENIX, AZ 85038-9735
PO BOX 29736, PHOENIX, AZ 85038-9736
PO BOX 29737, PHOENIX, AZ 85038-9737
PO BOX 29738, PHOENIX, AZ 85038-9738
PO BOX 29739, PHOENIX, AZ 85038-9739
PO BOX 29740, PHOENIX, AZ 85038-9740
PO BOX 29741, PHOENIX, AZ 85038-9741
PO BOX 29742, PHOENIX, AZ 85038-9742
PO BOX 29743, PHOENIX, AZ 85038-9743
PO BOX 29744, PHOENIX, AZ 85038-9744
PO BOX 29745, PHOENIX, AZ 85038-9745
PO BOX 29746, PHOENIX, AZ 85038-9746
PO BOX 29747, PHOENIX, AZ 85038-9747
PO BOX 29748, PHOENIX, AZ 85038-9748
PO BOX 29749, PHOENIX, AZ 85038-9749
PO BOX 29750, PHOENIX, AZ 85038-9750
PO BOX 29751, PHOENIX, AZ 85038-9751
PO BOX 29752, PHOENIX, AZ 85038-9752
PO BOX 29753, PHOENIX, AZ 85038-9753
PO BOX 29754, PHOENIX, AZ 85038-9754
PO BOX 29755, PHOENIX, AZ 85038-9755
PO BOX 29756, PHOENIX, AZ 85038-9756
PO BOX 29757, PHOENIX, AZ 85038-9757
PO BOX 29758, PHOENIX, AZ 85038-9758
PO BOX 29759, PHOENIX, AZ 85038-9759
PO BOX 29760, PHOENIX, AZ 85038-9760
PO BOX 29761, PHOENIX, AZ 85038-9761
PO BOX 29762, PHOENIX, AZ 85038-9762
PO BOX 29763, PHOENIX, AZ 85038-9763
PO BOX 29764, PHOENIX, AZ 85038-9764
PO BOX 29765, PHOENIX, AZ 85038-9765
PO BOX 29766, PHOENIX, AZ 85038-9766
PO BOX 29767, PHOENIX, AZ 85038-9767
PO BOX 29768, PHOENIX, AZ 85038-9768
PO BOX 29769, PHOENIX, AZ 85038-9769
PO BOX 29770, PHOENIX, AZ 85038-9770
PO BOX 29771, PHOENIX, AZ 85038-9771
PO BOX 29772, PHOENIX, AZ 85038-9772
PO BOX 29773, PHOENIX, AZ 85038-9773
PO BOX 29774, PHOENIX, AZ 85038-9774
PO BOX 29775, PHOENIX, AZ 85038-9775
PO BOX 29776, PHOENIX, AZ 85038-9776
PO BOX 29777, PHOENIX, AZ 85038-9777
PO BOX 29778, PHOENIX, AZ 85038-9778
PO BOX 29779, PHOENIX, AZ 85038-9779
PO BOX 29780, PHOENIX, AZ 85038-9780
PO BOX 29781, PHOENIX, AZ 85038-9781
PO BOX 29782, PHOENIX, AZ 85038-9782
PO BOX 29783, PHOENIX, AZ 85038-9783
PO BOX 29784, PHOENIX, AZ 85038-9784
PO BOX 29785, PHOENIX, AZ 85038-9785
PO BOX 29786, PHOENIX, AZ 85038-9786
PO BOX 29787, PHOENIX, AZ 85038-9787
PO BOX 29788, PHOENIX, AZ 85038-9788
PO BOX 29789, PHOENIX, AZ 85038-9789
PO BOX 29790, PHOENIX, AZ 85038-9790
PO BOX 29791, PHOENIX, AZ 85038-9791
PO BOX 29792, PHOENIX, AZ 85038-9792
PO BOX 29793, PHOENIX, AZ 85038-9793
PO BOX 29794, PHOENIX, AZ 85038-9794
PO BOX 29795, PHOENIX, AZ 85038-9795
PO BOX 29796, PHOENIX, AZ 85038-9796
PO BOX 29797, PHOENIX, AZ 85038-9797
PO BOX 29798, PHOENIX, AZ 85038-9798
PO BOX 29799, PHOENIX, AZ 85038-9799
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