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 5641, NEWPORT BEACH, CA 92662-5641
PO BOX 5642, NEWPORT BEACH, CA 92662-5642
PO BOX 5643, NEWPORT BEACH, CA 92662-5643
PO BOX 5644, NEWPORT BEACH, CA 92662-5644
PO BOX 5645, NEWPORT BEACH, CA 92662-5645
PO BOX 5646, NEWPORT BEACH, CA 92662-5646
PO BOX 5647, NEWPORT BEACH, CA 92662-5647
PO BOX 5648, NEWPORT BEACH, CA 92662-5648
PO BOX 5649, NEWPORT BEACH, CA 92662-5649
PO BOX 5650, NEWPORT BEACH, CA 92662-5650
PO BOX 5651, NEWPORT BEACH, CA 92662-5651
PO BOX 5652, NEWPORT BEACH, CA 92662-5652
PO BOX 5653, NEWPORT BEACH, CA 92662-5653
PO BOX 5654, NEWPORT BEACH, CA 92662-5654
PO BOX 5655, NEWPORT BEACH, CA 92662-5655
PO BOX 5656, NEWPORT BEACH, CA 92662-5656
PO BOX 5657, NEWPORT BEACH, CA 92662-5657
PO BOX 5658, NEWPORT BEACH, CA 92662-5658
PO BOX 5659, NEWPORT BEACH, CA 92662-5659
PO BOX 5660, NEWPORT BEACH, CA 92662-5660
PO BOX 5661, NEWPORT BEACH, CA 92662-5661
PO BOX 5662, NEWPORT BEACH, CA 92662-5662
PO BOX 5663, NEWPORT BEACH, CA 92662-5663
PO BOX 5664, NEWPORT BEACH, CA 92662-5664
PO BOX 5665, NEWPORT BEACH, CA 92662-5665
PO BOX 5666, NEWPORT BEACH, CA 92662-5666
PO BOX 5667, NEWPORT BEACH, CA 92662-5667
PO BOX 5668, NEWPORT BEACH, CA 92662-5668
PO BOX 5669, NEWPORT BEACH, CA 92662-5669
PO BOX 5670, NEWPORT BEACH, CA 92662-5670
PO BOX 5671, NEWPORT BEACH, CA 92662-5671
PO BOX 5672, NEWPORT BEACH, CA 92662-5672
PO BOX 5673, NEWPORT BEACH, CA 92662-5673
PO BOX 5674, NEWPORT BEACH, CA 92662-5674
PO BOX 5675, NEWPORT BEACH, CA 92662-5675
PO BOX 5676, NEWPORT BEACH, CA 92662-5676
PO BOX 5677, NEWPORT BEACH, CA 92662-5677
PO BOX 5678, NEWPORT BEACH, CA 92662-5678
PO BOX 5679, NEWPORT BEACH, CA 92662-5679
PO BOX 5680, NEWPORT BEACH, CA 92662-5680
PO BOX 5681, NEWPORT BEACH, CA 92662-5681
PO BOX 5682, NEWPORT BEACH, CA 92662-5682
PO BOX 5683, NEWPORT BEACH, CA 92662-5683
PO BOX 5684, NEWPORT BEACH, CA 92662-5684
PO BOX 5685, NEWPORT BEACH, CA 92662-5685
PO BOX 5686, NEWPORT BEACH, CA 92662-5686
PO BOX 5687, NEWPORT BEACH, CA 92662-5687
PO BOX 5688, NEWPORT BEACH, CA 92662-5688
PO BOX 5689, NEWPORT BEACH, CA 92662-5689
PO BOX 5690, NEWPORT BEACH, CA 92662-5690
PO BOX 5691, NEWPORT BEACH, CA 92662-5691
PO BOX 5692, NEWPORT BEACH, CA 92662-5692
PO BOX 5693, NEWPORT BEACH, CA 92662-5693
PO BOX 5694, NEWPORT BEACH, CA 92662-5694
PO BOX 5695, NEWPORT BEACH, CA 92662-5695
PO BOX 5696, NEWPORT BEACH, CA 92662-5696
PO BOX 5697, NEWPORT BEACH, CA 92662-5697
PO BOX 5698, NEWPORT BEACH, CA 92662-5698
PO BOX 5699, NEWPORT BEACH, CA 92662-5699
PO BOX 5700, NEWPORT BEACH, CA 92662-5700
PO BOX 5701, NEWPORT BEACH, CA 92662-5701
PO BOX 5702, NEWPORT BEACH, CA 92662-5702
PO BOX 5703, NEWPORT BEACH, CA 92662-5703
PO BOX 5704, NEWPORT BEACH, CA 92662-5704
PO BOX 5705, NEWPORT BEACH, CA 92662-5705
PO BOX 5706, NEWPORT BEACH, CA 92662-5706
PO BOX 5707, NEWPORT BEACH, CA 92662-5707
PO BOX 5708, NEWPORT BEACH, CA 92662-5708
PO BOX 5709, NEWPORT BEACH, CA 92662-5709
PO BOX 5710, NEWPORT BEACH, CA 92662-5710
PO BOX 5711, NEWPORT BEACH, CA 92662-5711
PO BOX 5712, NEWPORT BEACH, CA 92662-5712
PO BOX 5713, NEWPORT BEACH, CA 92662-5713
PO BOX 5714, NEWPORT BEACH, CA 92662-5714
PO BOX 5715, NEWPORT BEACH, CA 92662-5715
PO BOX 5716, NEWPORT BEACH, CA 92662-5716
PO BOX 5717, NEWPORT BEACH, CA 92662-5717
PO BOX 5718, NEWPORT BEACH, CA 92662-5718
PO BOX 5719, NEWPORT BEACH, CA 92662-5719
PO BOX 5720, NEWPORT BEACH, CA 92662-5720
PO BOX 5721, NEWPORT BEACH, CA 92662-5721
PO BOX 5722, NEWPORT BEACH, CA 92662-5722
PO BOX 5723, NEWPORT BEACH, CA 92662-5723
PO BOX 5724, NEWPORT BEACH, CA 92662-5724
PO BOX 5725, NEWPORT BEACH, CA 92662-5725
PO BOX 5726, NEWPORT BEACH, CA 92662-5726
PO BOX 5727, NEWPORT BEACH, CA 92662-5727
PO BOX 5728, NEWPORT BEACH, CA 92662-5728
PO BOX 5729, NEWPORT BEACH, CA 92662-5729
PO BOX 5730, NEWPORT BEACH, CA 92662-5730
PO BOX 5731, NEWPORT BEACH, CA 92662-5731
PO BOX 5732, NEWPORT BEACH, CA 92662-5732
PO BOX 5733, NEWPORT BEACH, CA 92662-5733
PO BOX 5734, NEWPORT BEACH, CA 92662-5734
PO BOX 5735, NEWPORT BEACH, CA 92662-5735
PO BOX 5736, NEWPORT BEACH, CA 92662-5736
PO BOX 5737, NEWPORT BEACH, CA 92662-5737
PO BOX 5738, NEWPORT BEACH, CA 92662-5738
PO BOX 5739, NEWPORT BEACH, CA 92662-5739
PO BOX 5740, NEWPORT BEACH, CA 92662-5740
PO BOX 5741, NEWPORT BEACH, CA 92662-5741
PO BOX 5742, NEWPORT BEACH, CA 92662-5742
PO BOX 5743, NEWPORT BEACH, CA 92662-5743
PO BOX 5744, NEWPORT BEACH, CA 92662-5744
PO BOX 5745, NEWPORT BEACH, CA 92662-5745
PO BOX 5746, NEWPORT BEACH, CA 92662-5746
PO BOX 5747, NEWPORT BEACH, CA 92662-5747
PO BOX 5748, NEWPORT BEACH, CA 92662-5748
PO BOX 5749, NEWPORT BEACH, CA 92662-5749
PO BOX 5750, NEWPORT BEACH, CA 92662-5750
PO BOX 5751, NEWPORT BEACH, CA 92662-5751
PO BOX 5752, NEWPORT BEACH, CA 92662-5752
PO BOX 5753, NEWPORT BEACH, CA 92662-5753
PO BOX 5754, NEWPORT BEACH, CA 92662-5754
PO BOX 5755, NEWPORT BEACH, CA 92662-5755
PO BOX 5756, NEWPORT BEACH, CA 92662-5756
PO BOX 5757, NEWPORT BEACH, CA 92662-5757
PO BOX 5758, NEWPORT BEACH, CA 92662-5758
PO BOX 5759, NEWPORT BEACH, CA 92662-5759
PO BOX 5760, NEWPORT BEACH, CA 92662-5760
PO BOX 5761, NEWPORT BEACH, CA 92662-5761
PO BOX 5762, NEWPORT BEACH, CA 92662-5762
PO BOX 5763, NEWPORT BEACH, CA 92662-5763
PO BOX 5764, NEWPORT BEACH, CA 92662-5764
PO BOX 5765, NEWPORT BEACH, CA 92662-5765
PO BOX 5766, NEWPORT BEACH, CA 92662-5766
PO BOX 5767, NEWPORT BEACH, CA 92662-5767
PO BOX 5768, NEWPORT BEACH, CA 92662-5768
PO BOX 5769, NEWPORT BEACH, CA 92662-5769
PO BOX 5770, NEWPORT BEACH, CA 92662-5770
PO BOX 5771, NEWPORT BEACH, CA 92662-5771
PO BOX 5772, NEWPORT BEACH, CA 92662-5772
PO BOX 5773, NEWPORT BEACH, CA 92662-5773
PO BOX 5774, NEWPORT BEACH, CA 92662-5774
PO BOX 5775, NEWPORT BEACH, CA 92662-5775
PO BOX 5776, NEWPORT BEACH, CA 92662-5776
PO BOX 5777, NEWPORT BEACH, CA 92662-5777
PO BOX 5778, NEWPORT BEACH, CA 92662-5778
PO BOX 5779, NEWPORT BEACH, CA 92662-5779
PO BOX 5780, NEWPORT BEACH, CA 92662-5780
PO BOX 5781, NEWPORT BEACH, CA 92662-5781
PO BOX 5782, NEWPORT BEACH, CA 92662-5782
PO BOX 5783, NEWPORT BEACH, CA 92662-5783
PO BOX 5784, NEWPORT BEACH, CA 92662-5784
PO BOX 5785, NEWPORT BEACH, CA 92662-5785
PO BOX 5786, NEWPORT BEACH, CA 92662-5786
PO BOX 5787, NEWPORT BEACH, CA 92662-5787
PO BOX 5788, NEWPORT BEACH, CA 92662-5788
PO BOX 5789, NEWPORT BEACH, CA 92662-5789
PO BOX 5790, NEWPORT BEACH, CA 92662-5790
PO BOX 5791, NEWPORT BEACH, CA 92662-5791
PO BOX 5792, NEWPORT BEACH, CA 92662-5792
PO BOX 5793, NEWPORT BEACH, CA 92662-5793
PO BOX 5794, NEWPORT BEACH, CA 92662-5794
PO BOX 5795, NEWPORT BEACH, CA 92662-5795
PO BOX 5796, NEWPORT BEACH, CA 92662-5796
PO BOX 5797, NEWPORT BEACH, CA 92662-5797
PO BOX 5798, NEWPORT BEACH, CA 92662-5798
PO BOX 5799, NEWPORT BEACH, CA 92662-5799
PO BOX 5800, NEWPORT BEACH, CA 92662-5800
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