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 1501, WISCONSIN RAPIDS, WI 54495-1501
PO BOX 1502, WISCONSIN RAPIDS, WI 54495-1502
PO BOX 1503, WISCONSIN RAPIDS, WI 54495-1503
PO BOX 1504, WISCONSIN RAPIDS, WI 54495-1504
PO BOX 1505, WISCONSIN RAPIDS, WI 54495-1505
PO BOX 1506, WISCONSIN RAPIDS, WI 54495-1506
PO BOX 1507, WISCONSIN RAPIDS, WI 54495-1507
PO BOX 1508, WISCONSIN RAPIDS, WI 54495-1508
PO BOX 1509, WISCONSIN RAPIDS, WI 54495-1509
PO BOX 1510, WISCONSIN RAPIDS, WI 54495-1510
PO BOX 1511, WISCONSIN RAPIDS, WI 54495-1511
PO BOX 1512, WISCONSIN RAPIDS, WI 54495-1512
PO BOX 1513, WISCONSIN RAPIDS, WI 54495-1513
PO BOX 1514, WISCONSIN RAPIDS, WI 54495-1514
PO BOX 1515, WISCONSIN RAPIDS, WI 54495-1515
PO BOX 1516, WISCONSIN RAPIDS, WI 54495-1516
PO BOX 1517, WISCONSIN RAPIDS, WI 54495-1517
PO BOX 1518, WISCONSIN RAPIDS, WI 54495-1518
PO BOX 1519, WISCONSIN RAPIDS, WI 54495-1519
PO BOX 1520, WISCONSIN RAPIDS, WI 54495-1520
PO BOX 1521, WISCONSIN RAPIDS, WI 54495-1521
PO BOX 1522, WISCONSIN RAPIDS, WI 54495-1522
PO BOX 1523, WISCONSIN RAPIDS, WI 54495-1523
PO BOX 1524, WISCONSIN RAPIDS, WI 54495-1524
PO BOX 1525, WISCONSIN RAPIDS, WI 54495-1525
PO BOX 1526, WISCONSIN RAPIDS, WI 54495-1526
PO BOX 1527, WISCONSIN RAPIDS, WI 54495-1527
PO BOX 1528, WISCONSIN RAPIDS, WI 54495-1528
PO BOX 1529, WISCONSIN RAPIDS, WI 54495-1529
PO BOX 1530, WISCONSIN RAPIDS, WI 54495-1530
PO BOX 1531, WISCONSIN RAPIDS, WI 54495-1531
PO BOX 1532, WISCONSIN RAPIDS, WI 54495-1532
PO BOX 1533, WISCONSIN RAPIDS, WI 54495-1533
PO BOX 1534, WISCONSIN RAPIDS, WI 54495-1534
PO BOX 1535, WISCONSIN RAPIDS, WI 54495-1535
PO BOX 1536, WISCONSIN RAPIDS, WI 54495-1536
PO BOX 1537, WISCONSIN RAPIDS, WI 54495-1537
PO BOX 1538, WISCONSIN RAPIDS, WI 54495-1538
PO BOX 1539, WISCONSIN RAPIDS, WI 54495-1539
PO BOX 1540, WISCONSIN RAPIDS, WI 54495-1540
PO BOX 1541, WISCONSIN RAPIDS, WI 54495-1541
PO BOX 1542, WISCONSIN RAPIDS, WI 54495-1542
PO BOX 1543, WISCONSIN RAPIDS, WI 54495-1543
PO BOX 1544, WISCONSIN RAPIDS, WI 54495-1544
PO BOX 1545, WISCONSIN RAPIDS, WI 54495-1545
PO BOX 1546, WISCONSIN RAPIDS, WI 54495-1546
PO BOX 1547, WISCONSIN RAPIDS, WI 54495-1547
PO BOX 1548, WISCONSIN RAPIDS, WI 54495-1548
PO BOX 1549, WISCONSIN RAPIDS, WI 54495-1549
PO BOX 1550, WISCONSIN RAPIDS, WI 54495-1550
PO BOX 1551, WISCONSIN RAPIDS, WI 54495-1551
PO BOX 1552, WISCONSIN RAPIDS, WI 54495-1552
PO BOX 1553, WISCONSIN RAPIDS, WI 54495-1553
PO BOX 1554, WISCONSIN RAPIDS, WI 54495-1554
PO BOX 1555, WISCONSIN RAPIDS, WI 54495-1555
PO BOX 1556, WISCONSIN RAPIDS, WI 54495-1556
PO BOX 1557, WISCONSIN RAPIDS, WI 54495-1557
PO BOX 1558, WISCONSIN RAPIDS, WI 54495-1558
PO BOX 1559, WISCONSIN RAPIDS, WI 54495-1559
PO BOX 1560, WISCONSIN RAPIDS, WI 54495-1560
PO BOX 1561, WISCONSIN RAPIDS, WI 54495-1561
PO BOX 1562, WISCONSIN RAPIDS, WI 54495-1562
PO BOX 1563, WISCONSIN RAPIDS, WI 54495-1563
PO BOX 1564, WISCONSIN RAPIDS, WI 54495-1564
PO BOX 1565, WISCONSIN RAPIDS, WI 54495-1565
PO BOX 1566, WISCONSIN RAPIDS, WI 54495-1566
PO BOX 1567, WISCONSIN RAPIDS, WI 54495-1567
PO BOX 1568, WISCONSIN RAPIDS, WI 54495-1568
PO BOX 1569, WISCONSIN RAPIDS, WI 54495-1569
PO BOX 1570, WISCONSIN RAPIDS, WI 54495-1570
PO BOX 1571, WISCONSIN RAPIDS, WI 54495-1571
PO BOX 1572, WISCONSIN RAPIDS, WI 54495-1572
PO BOX 1573, WISCONSIN RAPIDS, WI 54495-1573
PO BOX 1574, WISCONSIN RAPIDS, WI 54495-1574
PO BOX 1575, WISCONSIN RAPIDS, WI 54495-1575
PO BOX 1576, WISCONSIN RAPIDS, WI 54495-1576
PO BOX 1577, WISCONSIN RAPIDS, WI 54495-1577
PO BOX 1578, WISCONSIN RAPIDS, WI 54495-1578
PO BOX 1579, WISCONSIN RAPIDS, WI 54495-1579
PO BOX 1580, WISCONSIN RAPIDS, WI 54495-1580
PO BOX 1581, WISCONSIN RAPIDS, WI 54495-1581
PO BOX 1582, WISCONSIN RAPIDS, WI 54495-1582
PO BOX 1583, WISCONSIN RAPIDS, WI 54495-1583
PO BOX 1584, WISCONSIN RAPIDS, WI 54495-1584
PO BOX 1585, WISCONSIN RAPIDS, WI 54495-1585
PO BOX 1586, WISCONSIN RAPIDS, WI 54495-1586
PO BOX 1587, WISCONSIN RAPIDS, WI 54495-1587
PO BOX 1588, WISCONSIN RAPIDS, WI 54495-1588
PO BOX 1589, WISCONSIN RAPIDS, WI 54495-1589
PO BOX 1590, WISCONSIN RAPIDS, WI 54495-1590
PO BOX 1591, WISCONSIN RAPIDS, WI 54495-1591
PO BOX 1592, WISCONSIN RAPIDS, WI 54495-1592
PO BOX 1593, WISCONSIN RAPIDS, WI 54495-1593
PO BOX 1594, WISCONSIN RAPIDS, WI 54495-1594
PO BOX 1595, WISCONSIN RAPIDS, WI 54495-1595
PO BOX 1596, WISCONSIN RAPIDS, WI 54495-1596
PO BOX 1597, WISCONSIN RAPIDS, WI 54495-1597
PO BOX 1598, WISCONSIN RAPIDS, WI 54495-1598
PO BOX 1599, WISCONSIN RAPIDS, WI 54495-1599
PO BOX 1600, WISCONSIN RAPIDS, WI 54495-1600
PO BOX 1601, WISCONSIN RAPIDS, WI 54495-1601
PO BOX 1602, WISCONSIN RAPIDS, WI 54495-1602
PO BOX 1603, WISCONSIN RAPIDS, WI 54495-1603
PO BOX 1604, WISCONSIN RAPIDS, WI 54495-1604
PO BOX 1605, WISCONSIN RAPIDS, WI 54495-1605
PO BOX 1606, WISCONSIN RAPIDS, WI 54495-1606
PO BOX 1607, WISCONSIN RAPIDS, WI 54495-1607
PO BOX 1608, WISCONSIN RAPIDS, WI 54495-1608
PO BOX 1609, WISCONSIN RAPIDS, WI 54495-1609
PO BOX 1610, WISCONSIN RAPIDS, WI 54495-1610
PO BOX 1611, WISCONSIN RAPIDS, WI 54495-1611
PO BOX 1612, WISCONSIN RAPIDS, WI 54495-1612
PO BOX 1613, WISCONSIN RAPIDS, WI 54495-1613
PO BOX 1614, WISCONSIN RAPIDS, WI 54495-1614
PO BOX 1615, WISCONSIN RAPIDS, WI 54495-1615
PO BOX 1616, WISCONSIN RAPIDS, WI 54495-1616
PO BOX 1617, WISCONSIN RAPIDS, WI 54495-1617
PO BOX 1618, WISCONSIN RAPIDS, WI 54495-1618
PO BOX 1619, WISCONSIN RAPIDS, WI 54495-1619
PO BOX 1620, WISCONSIN RAPIDS, WI 54495-1620
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