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, TOLEDO, OH 43603-1561
PO BOX 1562, TOLEDO, OH 43603-1562
PO BOX 1563, TOLEDO, OH 43603-1563
PO BOX 1564, TOLEDO, OH 43603-1564
PO BOX 1565, TOLEDO, OH 43603-1565
PO BOX 1566, TOLEDO, OH 43603-1566
PO BOX 1567, TOLEDO, OH 43603-1567
PO BOX 1568, TOLEDO, OH 43603-1568
PO BOX 1569, TOLEDO, OH 43603-1569
PO BOX 1570, TOLEDO, OH 43603-1570
PO BOX 1571, TOLEDO, OH 43603-1571
PO BOX 1572, TOLEDO, OH 43603-1572
PO BOX 1573, TOLEDO, OH 43603-1573
PO BOX 1574, TOLEDO, OH 43603-1574
PO BOX 1575, TOLEDO, OH 43603-1575
PO BOX 1576, TOLEDO, OH 43603-1576
PO BOX 1577, TOLEDO, OH 43603-1577
PO BOX 1578, TOLEDO, OH 43603-1578
PO BOX 1579, TOLEDO, OH 43603-1579
PO BOX 1580, TOLEDO, OH 43603-1580
PO BOX 1581, TOLEDO, OH 43603-1581
PO BOX 1582, TOLEDO, OH 43603-1582
PO BOX 1583, TOLEDO, OH 43603-1583
PO BOX 1584, TOLEDO, OH 43603-1584
PO BOX 1585, TOLEDO, OH 43603-1585
PO BOX 1586, TOLEDO, OH 43603-1586
PO BOX 1587, TOLEDO, OH 43603-1587
PO BOX 1588, TOLEDO, OH 43603-1588
PO BOX 1589, TOLEDO, OH 43603-1589
PO BOX 1590, TOLEDO, OH 43603-1590
PO BOX 1591, TOLEDO, OH 43603-1591
PO BOX 1592, TOLEDO, OH 43603-1592
PO BOX 1593, TOLEDO, OH 43603-1593
PO BOX 1594, TOLEDO, OH 43603-1594
PO BOX 1595, TOLEDO, OH 43603-1595
PO BOX 1596, TOLEDO, OH 43603-1596
PO BOX 1597, TOLEDO, OH 43603-1597
PO BOX 1598, TOLEDO, OH 43603-1598
PO BOX 1599, TOLEDO, OH 43603-1599
PO BOX 1600, TOLEDO, OH 43603-1600
PO BOX 1601, TOLEDO, OH 43603-1601
PO BOX 1602, TOLEDO, OH 43603-1602
PO BOX 1603, TOLEDO, OH 43603-1603
PO BOX 1604, TOLEDO, OH 43603-1604
PO BOX 1605, TOLEDO, OH 43603-1605
PO BOX 1606, TOLEDO, OH 43603-1606
PO BOX 1607, TOLEDO, OH 43603-1607
PO BOX 1608, TOLEDO, OH 43603-1608
PO BOX 1609, TOLEDO, OH 43603-1609
PO BOX 1610, TOLEDO, OH 43603-1610
PO BOX 1611, TOLEDO, OH 43603-1611
PO BOX 1612, TOLEDO, OH 43603-1612
PO BOX 1613, TOLEDO, OH 43603-1613
PO BOX 1614, TOLEDO, OH 43603-1614
PO BOX 1615, TOLEDO, OH 43603-1615
PO BOX 1616, TOLEDO, OH 43603-1616
PO BOX 1617, TOLEDO, OH 43603-1617
PO BOX 1618, TOLEDO, OH 43603-1618
PO BOX 1619, TOLEDO, OH 43603-1619
PO BOX 1620, TOLEDO, OH 43603-1620
PO BOX 1621, TOLEDO, OH 43603-1621
PO BOX 1622, TOLEDO, OH 43603-1622
PO BOX 1623, TOLEDO, OH 43603-1623
PO BOX 1624, TOLEDO, OH 43603-1624
PO BOX 1625, TOLEDO, OH 43603-1625
PO BOX 1626, TOLEDO, OH 43603-1626
PO BOX 1627, TOLEDO, OH 43603-1627
PO BOX 1628, TOLEDO, OH 43603-1628
PO BOX 1629, TOLEDO, OH 43603-1629
PO BOX 1630, TOLEDO, OH 43603-1630
PO BOX 1631, TOLEDO, OH 43603-1631
PO BOX 1632, TOLEDO, OH 43603-1632
PO BOX 1633, TOLEDO, OH 43603-1633
PO BOX 1634, TOLEDO, OH 43603-1634
PO BOX 1635, TOLEDO, OH 43603-1635
PO BOX 1636, TOLEDO, OH 43603-1636
PO BOX 1637, TOLEDO, OH 43603-1637
PO BOX 1638, TOLEDO, OH 43603-1638
PO BOX 1639, TOLEDO, OH 43603-1639
PO BOX 1640, TOLEDO, OH 43603-1640
PO BOX 1641, TOLEDO, OH 43603-1641
PO BOX 1642, TOLEDO, OH 43603-1642
PO BOX 1643, TOLEDO, OH 43603-1643
PO BOX 1644, TOLEDO, OH 43603-1644
PO BOX 1645, TOLEDO, OH 43603-1645
PO BOX 1646, TOLEDO, OH 43603-1646
PO BOX 1647, TOLEDO, OH 43603-1647
PO BOX 1648, TOLEDO, OH 43603-1648
PO BOX 1649, TOLEDO, OH 43603-1649
PO BOX 1650, TOLEDO, OH 43603-1650
PO BOX 1651, TOLEDO, OH 43603-1651
PO BOX 1652, TOLEDO, OH 43603-1652
PO BOX 1653, TOLEDO, OH 43603-1653
PO BOX 1654, TOLEDO, OH 43603-1654
PO BOX 1655, TOLEDO, OH 43603-1655
PO BOX 1656, TOLEDO, OH 43603-1656
PO BOX 1657, TOLEDO, OH 43603-1657
PO BOX 1658, TOLEDO, OH 43603-1658
PO BOX 1659, TOLEDO, OH 43603-1659
PO BOX 1660, TOLEDO, OH 43603-1660
PO BOX 1661, TOLEDO, OH 43603-1661
PO BOX 1662, TOLEDO, OH 43603-1662
PO BOX 1663, TOLEDO, OH 43603-1663
PO BOX 1664, TOLEDO, OH 43603-1664
PO BOX 1665, TOLEDO, OH 43603-1665
PO BOX 1666, TOLEDO, OH 43603-1666
PO BOX 1667, TOLEDO, OH 43603-1667
PO BOX 1668, TOLEDO, OH 43603-1668
PO BOX 1669, TOLEDO, OH 43603-1669
PO BOX 1670, TOLEDO, OH 43603-1670
PO BOX 1671, TOLEDO, OH 43603-1671
PO BOX 1672, TOLEDO, OH 43603-1672
PO BOX 1673, TOLEDO, OH 43603-1673
PO BOX 1674, TOLEDO, OH 43603-1674
PO BOX 1675, TOLEDO, OH 43603-1675
PO BOX 1676, TOLEDO, OH 43603-1676
PO BOX 1677, TOLEDO, OH 43603-1677
PO BOX 1678, TOLEDO, OH 43603-1678
PO BOX 1679, TOLEDO, OH 43603-1679
PO BOX 1680, TOLEDO, OH 43603-1680
PO BOX 1681, TOLEDO, OH 43603-1681
PO BOX 1682, TOLEDO, OH 43603-1682
PO BOX 1683, TOLEDO, OH 43603-1683
PO BOX 1684, TOLEDO, OH 43603-1684
PO BOX 1685, TOLEDO, OH 43603-1685
PO BOX 1686, TOLEDO, OH 43603-1686
PO BOX 1687, TOLEDO, OH 43603-1687
PO BOX 1688, TOLEDO, OH 43603-1688
PO BOX 1689, TOLEDO, OH 43603-1689
PO BOX 1690, TOLEDO, OH 43603-1690
PO BOX 1691, TOLEDO, OH 43603-1691
PO BOX 1692, TOLEDO, OH 43603-1692
PO BOX 1693, TOLEDO, OH 43603-1693
PO BOX 1694, TOLEDO, OH 43603-1694
PO BOX 1695, TOLEDO, OH 43603-1695
PO BOX 1696, TOLEDO, OH 43603-1696
PO BOX 1697, TOLEDO, OH 43603-1697
PO BOX 1698, TOLEDO, OH 43603-1698
PO BOX 1699, TOLEDO, OH 43603-1699
PO BOX 1700, TOLEDO, OH 43603-1700
PO BOX 1701, TOLEDO, OH 43603-1701
PO BOX 1702, TOLEDO, OH 43603-1702
PO BOX 1703, TOLEDO, OH 43603-1703
PO BOX 1704, TOLEDO, OH 43603-1704
PO BOX 1705, TOLEDO, OH 43603-1705
PO BOX 1706, TOLEDO, OH 43603-1706
PO BOX 1707, TOLEDO, OH 43603-1707
PO BOX 1708, TOLEDO, OH 43603-1708
PO BOX 1709, TOLEDO, OH 43603-1709
PO BOX 1710, TOLEDO, OH 43603-1710
PO BOX 1711, TOLEDO, OH 43603-1711
PO BOX 1712, TOLEDO, OH 43603-1712
PO BOX 1713, TOLEDO, OH 43603-1713
PO BOX 1714, TOLEDO, OH 43603-1714
PO BOX 1715, TOLEDO, OH 43603-1715
PO BOX 1716, TOLEDO, OH 43603-1716
PO BOX 1717, TOLEDO, OH 43603-1717
PO BOX 1718, TOLEDO, OH 43603-1718
PO BOX 1719, TOLEDO, OH 43603-1719
PO BOX 1720, TOLEDO, OH 43603-1720
PO BOX 1721, TOLEDO, OH 43603-1721
PO BOX 1722, TOLEDO, OH 43603-1722
PO BOX 1723, TOLEDO, OH 43603-1723
PO BOX 1724, TOLEDO, OH 43603-1724
PO BOX 1725, TOLEDO, OH 43603-1725
PO BOX 1726, TOLEDO, OH 43603-1726
PO BOX 1727, TOLEDO, OH 43603-1727
PO BOX 1728, TOLEDO, OH 43603-1728
PO BOX 1729, TOLEDO, OH 43603-1729
PO BOX 1730, TOLEDO, OH 43603-1730
PO BOX 1731, TOLEDO, OH 43603-1731
PO BOX 1732, TOLEDO, OH 43603-1732
PO BOX 1733, TOLEDO, OH 43603-1733
PO BOX 1734, TOLEDO, OH 43603-1734
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