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 1561, FALLBROOK, CA 92088-1561
PO BOX 1562, FALLBROOK, CA 92088-1562
PO BOX 1563, FALLBROOK, CA 92088-1563
PO BOX 1564, FALLBROOK, CA 92088-1564
PO BOX 1565, FALLBROOK, CA 92088-1565
PO BOX 1566, FALLBROOK, CA 92088-1566
PO BOX 1567, FALLBROOK, CA 92088-1567
PO BOX 1568, FALLBROOK, CA 92088-1568
PO BOX 1569, FALLBROOK, CA 92088-1569
PO BOX 1570, FALLBROOK, CA 92088-1570
PO BOX 1571, FALLBROOK, CA 92088-1571
PO BOX 1572, FALLBROOK, CA 92088-1572
PO BOX 1573, FALLBROOK, CA 92088-1573
PO BOX 1574, FALLBROOK, CA 92088-1574
PO BOX 1575, FALLBROOK, CA 92088-1575
PO BOX 1576, FALLBROOK, CA 92088-1576
PO BOX 1577, FALLBROOK, CA 92088-1577
PO BOX 1578, FALLBROOK, CA 92088-1578
PO BOX 1579, FALLBROOK, CA 92088-1579
PO BOX 1580, FALLBROOK, CA 92088-1580
PO BOX 1581, FALLBROOK, CA 92088-1581
PO BOX 1582, FALLBROOK, CA 92088-1582
PO BOX 1583, FALLBROOK, CA 92088-1583
PO BOX 1584, FALLBROOK, CA 92088-1584
PO BOX 1585, FALLBROOK, CA 92088-1585
PO BOX 1586, FALLBROOK, CA 92088-1586
PO BOX 1587, FALLBROOK, CA 92088-1587
PO BOX 1588, FALLBROOK, CA 92088-1588
PO BOX 1589, FALLBROOK, CA 92088-1589
PO BOX 1590, FALLBROOK, CA 92088-1590
PO BOX 1591, FALLBROOK, CA 92088-1591
PO BOX 1592, FALLBROOK, CA 92088-1592
PO BOX 1593, FALLBROOK, CA 92088-1593
PO BOX 1594, FALLBROOK, CA 92088-1594
PO BOX 1595, FALLBROOK, CA 92088-1595
PO BOX 1596, FALLBROOK, CA 92088-1596
PO BOX 1597, FALLBROOK, CA 92088-1597
PO BOX 1598, FALLBROOK, CA 92088-1598
PO BOX 1599, FALLBROOK, CA 92088-1599
PO BOX 1600, FALLBROOK, CA 92088-1600
PO BOX 1601, FALLBROOK, CA 92088-1601
PO BOX 1602, FALLBROOK, CA 92088-1602
PO BOX 1603, FALLBROOK, CA 92088-1603
PO BOX 1604, FALLBROOK, CA 92088-1604
PO BOX 1605, FALLBROOK, CA 92088-1605
PO BOX 1606, FALLBROOK, CA 92088-1606
PO BOX 1607, FALLBROOK, CA 92088-1607
PO BOX 1608, FALLBROOK, CA 92088-1608
PO BOX 1609, FALLBROOK, CA 92088-1609
PO BOX 1610, FALLBROOK, CA 92088-1610
PO BOX 1611, FALLBROOK, CA 92088-1611
PO BOX 1612, FALLBROOK, CA 92088-1612
PO BOX 1613, FALLBROOK, CA 92088-1613
PO BOX 1614, FALLBROOK, CA 92088-1614
PO BOX 1615, FALLBROOK, CA 92088-1615
PO BOX 1616, FALLBROOK, CA 92088-1616
PO BOX 1617, FALLBROOK, CA 92088-1617
PO BOX 1618, FALLBROOK, CA 92088-1618
PO BOX 1619, FALLBROOK, CA 92088-1619
PO BOX 1620, FALLBROOK, CA 92088-1620
PO BOX 1621, FALLBROOK, CA 92088-1621
PO BOX 1622, FALLBROOK, CA 92088-1622
PO BOX 1623, FALLBROOK, CA 92088-1623
PO BOX 1624, FALLBROOK, CA 92088-1624
PO BOX 1625, FALLBROOK, CA 92088-1625
PO BOX 1626, FALLBROOK, CA 92088-1626
PO BOX 1627, FALLBROOK, CA 92088-1627
PO BOX 1628, FALLBROOK, CA 92088-1628
PO BOX 1629, FALLBROOK, CA 92088-1629
PO BOX 1630, FALLBROOK, CA 92088-1630
PO BOX 1631, FALLBROOK, CA 92088-1631
PO BOX 1632, FALLBROOK, CA 92088-1632
PO BOX 1633, FALLBROOK, CA 92088-1633
PO BOX 1634, FALLBROOK, CA 92088-1634
PO BOX 1635, FALLBROOK, CA 92088-1635
PO BOX 1636, FALLBROOK, CA 92088-1636
PO BOX 1637, FALLBROOK, CA 92088-1637
PO BOX 1638, FALLBROOK, CA 92088-1638
PO BOX 1639, FALLBROOK, CA 92088-1639
PO BOX 1640, FALLBROOK, CA 92088-1640
PO BOX 1641, FALLBROOK, CA 92088-1641
PO BOX 1642, FALLBROOK, CA 92088-1642
PO BOX 1643, FALLBROOK, CA 92088-1643
PO BOX 1644, FALLBROOK, CA 92088-1644
PO BOX 1645, FALLBROOK, CA 92088-1645
PO BOX 1646, FALLBROOK, CA 92088-1646
PO BOX 1647, FALLBROOK, CA 92088-1647
PO BOX 1648, FALLBROOK, CA 92088-1648
PO BOX 1649, FALLBROOK, CA 92088-1649
PO BOX 1650, FALLBROOK, CA 92088-1650
PO BOX 1651, FALLBROOK, CA 92088-1651
PO BOX 1652, FALLBROOK, CA 92088-1652
PO BOX 1653, FALLBROOK, CA 92088-1653
PO BOX 1654, FALLBROOK, CA 92088-1654
PO BOX 1655, FALLBROOK, CA 92088-1655
PO BOX 1656, FALLBROOK, CA 92088-1656
PO BOX 1657, FALLBROOK, CA 92088-1657
PO BOX 1658, FALLBROOK, CA 92088-1658
PO BOX 1659, FALLBROOK, CA 92088-1659
PO BOX 1660, FALLBROOK, CA 92088-1660
PO BOX 1661, FALLBROOK, CA 92088-1661
PO BOX 1662, FALLBROOK, CA 92088-1662
PO BOX 1663, FALLBROOK, CA 92088-1663
PO BOX 1664, FALLBROOK, CA 92088-1664
PO BOX 1665, FALLBROOK, CA 92088-1665
PO BOX 1666, FALLBROOK, CA 92088-1666
PO BOX 1667, FALLBROOK, CA 92088-1667
PO BOX 1668, FALLBROOK, CA 92088-1668
PO BOX 1669, FALLBROOK, CA 92088-1669
PO BOX 1670, FALLBROOK, CA 92088-1670
PO BOX 1671, FALLBROOK, CA 92088-1671
PO BOX 1672, FALLBROOK, CA 92088-1672
PO BOX 1673, FALLBROOK, CA 92088-1673
PO BOX 1674, FALLBROOK, CA 92088-1674
PO BOX 1675, FALLBROOK, CA 92088-1675
PO BOX 1676, FALLBROOK, CA 92088-1676
PO BOX 1677, FALLBROOK, CA 92088-1677
PO BOX 1678, FALLBROOK, CA 92088-1678
PO BOX 1679, FALLBROOK, CA 92088-1679
PO BOX 1680, FALLBROOK, CA 92088-1680
PO BOX 1681, FALLBROOK, CA 92088-1681
PO BOX 1682, FALLBROOK, CA 92088-1682
PO BOX 1683, FALLBROOK, CA 92088-1683
PO BOX 1684, FALLBROOK, CA 92088-1684
PO BOX 1685, FALLBROOK, CA 92088-1685
PO BOX 1686, FALLBROOK, CA 92088-1686
PO BOX 1687, FALLBROOK, CA 92088-1687
PO BOX 1688, FALLBROOK, CA 92088-1688
PO BOX 1689, FALLBROOK, CA 92088-1689
PO BOX 1690, FALLBROOK, CA 92088-1690
PO BOX 1691, FALLBROOK, CA 92088-1691
PO BOX 1692, FALLBROOK, CA 92088-1692
PO BOX 1693, FALLBROOK, CA 92088-1693
PO BOX 1694, FALLBROOK, CA 92088-1694
PO BOX 1695, FALLBROOK, CA 92088-1695
PO BOX 1696, FALLBROOK, CA 92088-1696
PO BOX 1697, FALLBROOK, CA 92088-1697
PO BOX 1698, FALLBROOK, CA 92088-1698
PO BOX 1699, FALLBROOK, CA 92088-1699
PO BOX 1700, FALLBROOK, CA 92088-1700
PO BOX 1701, FALLBROOK, CA 92088-1701
PO BOX 1702, FALLBROOK, CA 92088-1702
PO BOX 1703, FALLBROOK, CA 92088-1703
PO BOX 1704, FALLBROOK, CA 92088-1704
PO BOX 1705, FALLBROOK, CA 92088-1705
PO BOX 1706, FALLBROOK, CA 92088-1706
PO BOX 1707, FALLBROOK, CA 92088-1707
PO BOX 1708, FALLBROOK, CA 92088-1708
PO BOX 1709, FALLBROOK, CA 92088-1709
PO BOX 1710, FALLBROOK, CA 92088-1710
PO BOX 1711, FALLBROOK, CA 92088-1711
PO BOX 1712, FALLBROOK, CA 92088-1712
PO BOX 1713, FALLBROOK, CA 92088-1713
PO BOX 1714, FALLBROOK, CA 92088-1714
PO BOX 1715, FALLBROOK, CA 92088-1715
PO BOX 1716, FALLBROOK, CA 92088-1716
PO BOX 1717, FALLBROOK, CA 92088-1717
PO BOX 1718, FALLBROOK, CA 92088-1718
PO BOX 1719, FALLBROOK, CA 92088-1719
PO BOX 1720, FALLBROOK, CA 92088-1720
PO BOX 1721, FALLBROOK, CA 92088-1721
PO BOX 1722, FALLBROOK, CA 92088-1722
PO BOX 1723, FALLBROOK, CA 92088-1723
PO BOX 1724, FALLBROOK, CA 92088-1724
PO BOX 1725, FALLBROOK, CA 92088-1725
PO BOX 1726, FALLBROOK, CA 92088-1726
PO BOX 1727, FALLBROOK, CA 92088-1727
PO BOX 1728, FALLBROOK, CA 92088-1728
PO BOX 1729, FALLBROOK, CA 92088-1729
PO BOX 1730, FALLBROOK, CA 92088-1730
PO BOX 1731, FALLBROOK, CA 92088-1731
PO BOX 1732, FALLBROOK, CA 92088-1732
PO BOX 1733, FALLBROOK, CA 92088-1733
PO BOX 1734, FALLBROOK, CA 92088-1734
PO BOX 1735, FALLBROOK, CA 92088-1735
PO BOX 1736, FALLBROOK, CA 92088-1736
PO BOX 1737, FALLBROOK, CA 92088-1737
PO BOX 1738, FALLBROOK, CA 92088-1738
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