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 1381, FALLBROOK, CA 92088-1381
PO BOX 1382, FALLBROOK, CA 92088-1382
PO BOX 1383, FALLBROOK, CA 92088-1383
PO BOX 1384, FALLBROOK, CA 92088-1384
PO BOX 1385, FALLBROOK, CA 92088-1385
PO BOX 1386, FALLBROOK, CA 92088-1386
PO BOX 1387, FALLBROOK, CA 92088-1387
PO BOX 1388, FALLBROOK, CA 92088-1388
PO BOX 1389, FALLBROOK, CA 92088-1389
PO BOX 1390, FALLBROOK, CA 92088-1390
PO BOX 1391, FALLBROOK, CA 92088-1391
PO BOX 1392, FALLBROOK, CA 92088-1392
PO BOX 1393, FALLBROOK, CA 92088-1393
PO BOX 1394, FALLBROOK, CA 92088-1394
PO BOX 1395, FALLBROOK, CA 92088-1395
PO BOX 1396, FALLBROOK, CA 92088-1396
PO BOX 1397, FALLBROOK, CA 92088-1397
PO BOX 1398, FALLBROOK, CA 92088-1398
PO BOX 1399, FALLBROOK, CA 92088-1399
PO BOX 1400, FALLBROOK, CA 92088-1400
PO BOX 1401, FALLBROOK, CA 92088-1401
PO BOX 1402, FALLBROOK, CA 92088-1402
PO BOX 1403, FALLBROOK, CA 92088-1403
PO BOX 1404, FALLBROOK, CA 92088-1404
PO BOX 1405, FALLBROOK, CA 92088-1405
PO BOX 1406, FALLBROOK, CA 92088-1406
PO BOX 1407, FALLBROOK, CA 92088-1407
PO BOX 1408, FALLBROOK, CA 92088-1408
PO BOX 1409, FALLBROOK, CA 92088-1409
PO BOX 1410, FALLBROOK, CA 92088-1410
PO BOX 1411, FALLBROOK, CA 92088-1411
PO BOX 1412, FALLBROOK, CA 92088-1412
PO BOX 1413, FALLBROOK, CA 92088-1413
PO BOX 1414, FALLBROOK, CA 92088-1414
PO BOX 1415, FALLBROOK, CA 92088-1415
PO BOX 1416, FALLBROOK, CA 92088-1416
PO BOX 1417, FALLBROOK, CA 92088-1417
PO BOX 1418, FALLBROOK, CA 92088-1418
PO BOX 1419, FALLBROOK, CA 92088-1419
PO BOX 1420, FALLBROOK, CA 92088-1420
PO BOX 1421, FALLBROOK, CA 92088-1421
PO BOX 1422, FALLBROOK, CA 92088-1422
PO BOX 1423, FALLBROOK, CA 92088-1423
PO BOX 1424, FALLBROOK, CA 92088-1424
PO BOX 1425, FALLBROOK, CA 92088-1425
PO BOX 1426, FALLBROOK, CA 92088-1426
PO BOX 1427, FALLBROOK, CA 92088-1427
PO BOX 1428, FALLBROOK, CA 92088-1428
PO BOX 1429, FALLBROOK, CA 92088-1429
PO BOX 1430, FALLBROOK, CA 92088-1430
PO BOX 1431, FALLBROOK, CA 92088-1431
PO BOX 1432, FALLBROOK, CA 92088-1432
PO BOX 1433, FALLBROOK, CA 92088-1433
PO BOX 1434, FALLBROOK, CA 92088-1434
PO BOX 1435, FALLBROOK, CA 92088-1435
PO BOX 1436, FALLBROOK, CA 92088-1436
PO BOX 1437, FALLBROOK, CA 92088-1437
PO BOX 1438, FALLBROOK, CA 92088-1438
PO BOX 1439, FALLBROOK, CA 92088-1439
PO BOX 1440, FALLBROOK, CA 92088-1440
PO BOX 1441, FALLBROOK, CA 92088-1441
PO BOX 1442, FALLBROOK, CA 92088-1442
PO BOX 1443, FALLBROOK, CA 92088-1443
PO BOX 1444, FALLBROOK, CA 92088-1444
PO BOX 1445, FALLBROOK, CA 92088-1445
PO BOX 1446, FALLBROOK, CA 92088-1446
PO BOX 1447, FALLBROOK, CA 92088-1447
PO BOX 1448, FALLBROOK, CA 92088-1448
PO BOX 1449, FALLBROOK, CA 92088-1449
PO BOX 1450, FALLBROOK, CA 92088-1450
PO BOX 1451, FALLBROOK, CA 92088-1451
PO BOX 1452, FALLBROOK, CA 92088-1452
PO BOX 1453, FALLBROOK, CA 92088-1453
PO BOX 1454, FALLBROOK, CA 92088-1454
PO BOX 1455, FALLBROOK, CA 92088-1455
PO BOX 1456, FALLBROOK, CA 92088-1456
PO BOX 1457, FALLBROOK, CA 92088-1457
PO BOX 1458, FALLBROOK, CA 92088-1458
PO BOX 1459, FALLBROOK, CA 92088-1459
PO BOX 1460, FALLBROOK, CA 92088-1460
PO BOX 1461, FALLBROOK, CA 92088-1461
PO BOX 1462, FALLBROOK, CA 92088-1462
PO BOX 1463, FALLBROOK, CA 92088-1463
PO BOX 1464, FALLBROOK, CA 92088-1464
PO BOX 1465, FALLBROOK, CA 92088-1465
PO BOX 1466, FALLBROOK, CA 92088-1466
PO BOX 1467, FALLBROOK, CA 92088-1467
PO BOX 1468, FALLBROOK, CA 92088-1468
PO BOX 1469, FALLBROOK, CA 92088-1469
PO BOX 1470, FALLBROOK, CA 92088-1470
PO BOX 1471, FALLBROOK, CA 92088-1471
PO BOX 1472, FALLBROOK, CA 92088-1472
PO BOX 1473, FALLBROOK, CA 92088-1473
PO BOX 1474, FALLBROOK, CA 92088-1474
PO BOX 1475, FALLBROOK, CA 92088-1475
PO BOX 1476, FALLBROOK, CA 92088-1476
PO BOX 1477, FALLBROOK, CA 92088-1477
PO BOX 1478, FALLBROOK, CA 92088-1478
PO BOX 1479, FALLBROOK, CA 92088-1479
PO BOX 1480, FALLBROOK, CA 92088-1480
PO BOX 1481, FALLBROOK, CA 92088-1481
PO BOX 1482, FALLBROOK, CA 92088-1482
PO BOX 1483, FALLBROOK, CA 92088-1483
PO BOX 1484, FALLBROOK, CA 92088-1484
PO BOX 1485, FALLBROOK, CA 92088-1485
PO BOX 1486, FALLBROOK, CA 92088-1486
PO BOX 1487, FALLBROOK, CA 92088-1487
PO BOX 1488, FALLBROOK, CA 92088-1488
PO BOX 1489, FALLBROOK, CA 92088-1489
PO BOX 1490, FALLBROOK, CA 92088-1490
PO BOX 1491, FALLBROOK, CA 92088-1491
PO BOX 1492, FALLBROOK, CA 92088-1492
PO BOX 1493, FALLBROOK, CA 92088-1493
PO BOX 1494, FALLBROOK, CA 92088-1494
PO BOX 1495, FALLBROOK, CA 92088-1495
PO BOX 1496, FALLBROOK, CA 92088-1496
PO BOX 1497, FALLBROOK, CA 92088-1497
PO BOX 1498, FALLBROOK, CA 92088-1498
PO BOX 1499, FALLBROOK, CA 92088-1499
PO BOX 1500, FALLBROOK, CA 92088-1500
PO BOX 1501, FALLBROOK, CA 92088-1501
PO BOX 1502, FALLBROOK, CA 92088-1502
PO BOX 1503, FALLBROOK, CA 92088-1503
PO BOX 1504, FALLBROOK, CA 92088-1504
PO BOX 1505, FALLBROOK, CA 92088-1505
PO BOX 1506, FALLBROOK, CA 92088-1506
PO BOX 1507, FALLBROOK, CA 92088-1507
PO BOX 1508, FALLBROOK, CA 92088-1508
PO BOX 1509, FALLBROOK, CA 92088-1509
PO BOX 1510, FALLBROOK, CA 92088-1510
PO BOX 1511, FALLBROOK, CA 92088-1511
PO BOX 1512, FALLBROOK, CA 92088-1512
PO BOX 1513, FALLBROOK, CA 92088-1513
PO BOX 1514, FALLBROOK, CA 92088-1514
PO BOX 1515, FALLBROOK, CA 92088-1515
PO BOX 1516, FALLBROOK, CA 92088-1516
PO BOX 1517, FALLBROOK, CA 92088-1517
PO BOX 1518, FALLBROOK, CA 92088-1518
PO BOX 1519, FALLBROOK, CA 92088-1519
PO BOX 1520, FALLBROOK, CA 92088-1520
PO BOX 1521, FALLBROOK, CA 92088-1521
PO BOX 1522, FALLBROOK, CA 92088-1522
PO BOX 1523, FALLBROOK, CA 92088-1523
PO BOX 1524, FALLBROOK, CA 92088-1524
PO BOX 1525, FALLBROOK, CA 92088-1525
PO BOX 1526, FALLBROOK, CA 92088-1526
PO BOX 1527, FALLBROOK, CA 92088-1527
PO BOX 1528, FALLBROOK, CA 92088-1528
PO BOX 1529, FALLBROOK, CA 92088-1529
PO BOX 1530, FALLBROOK, CA 92088-1530
PO BOX 1531, FALLBROOK, CA 92088-1531
PO BOX 1532, FALLBROOK, CA 92088-1532
PO BOX 1533, FALLBROOK, CA 92088-1533
PO BOX 1534, FALLBROOK, CA 92088-1534
PO BOX 1535, FALLBROOK, CA 92088-1535
PO BOX 1536, FALLBROOK, CA 92088-1536
PO BOX 1537, FALLBROOK, CA 92088-1537
PO BOX 1538, FALLBROOK, CA 92088-1538
PO BOX 1539, FALLBROOK, CA 92088-1539
PO BOX 1540, FALLBROOK, CA 92088-1540
PO BOX 1541, FALLBROOK, CA 92088-1541
PO BOX 1542, FALLBROOK, CA 92088-1542
PO BOX 1543, FALLBROOK, CA 92088-1543
PO BOX 1544, FALLBROOK, CA 92088-1544
PO BOX 1545, FALLBROOK, CA 92088-1545
PO BOX 1546, FALLBROOK, CA 92088-1546
PO BOX 1547, FALLBROOK, CA 92088-1547
PO BOX 1548, FALLBROOK, CA 92088-1548
PO BOX 1549, FALLBROOK, CA 92088-1549
PO BOX 1550, FALLBROOK, CA 92088-1550
PO BOX 1551, FALLBROOK, CA 92088-1551
PO BOX 1552, FALLBROOK, CA 92088-1552
PO BOX 1553, FALLBROOK, CA 92088-1553
PO BOX 1554, FALLBROOK, CA 92088-1554
PO BOX 1555, FALLBROOK, CA 92088-1555
PO BOX 1556, FALLBROOK, CA 92088-1556
PO BOX 1557, FALLBROOK, CA 92088-1557
PO BOX 1558, FALLBROOK, CA 92088-1558
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