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 1261, GLENDALE, AZ 85311-1261
PO BOX 1262, GLENDALE, AZ 85311-1262
PO BOX 1263, GLENDALE, AZ 85311-1263
PO BOX 1264, GLENDALE, AZ 85311-1264
PO BOX 1265, GLENDALE, AZ 85311-1265
PO BOX 1266, GLENDALE, AZ 85311-1266
PO BOX 1267, GLENDALE, AZ 85311-1267
PO BOX 1268, GLENDALE, AZ 85311-1268
PO BOX 1269, GLENDALE, AZ 85311-1269
PO BOX 1270, GLENDALE, AZ 85311-1270
PO BOX 1271, GLENDALE, AZ 85311-1271
PO BOX 1272, GLENDALE, AZ 85311-1272
PO BOX 1273, GLENDALE, AZ 85311-1273
PO BOX 1274, GLENDALE, AZ 85311-1274
PO BOX 1275, GLENDALE, AZ 85311-1275
PO BOX 1276, GLENDALE, AZ 85311-1276
PO BOX 1277, GLENDALE, AZ 85311-1277
PO BOX 1278, GLENDALE, AZ 85311-1278
PO BOX 1279, GLENDALE, AZ 85311-1279
PO BOX 1280, GLENDALE, AZ 85311-1280
PO BOX 1281, GLENDALE, AZ 85311-1281
PO BOX 1282, GLENDALE, AZ 85311-1282
PO BOX 1283, GLENDALE, AZ 85311-1283
PO BOX 1284, GLENDALE, AZ 85311-1284
PO BOX 1285, GLENDALE, AZ 85311-1285
PO BOX 1286, GLENDALE, AZ 85311-1286
PO BOX 1287, GLENDALE, AZ 85311-1287
PO BOX 1288, GLENDALE, AZ 85311-1288
PO BOX 1289, GLENDALE, AZ 85311-1289
PO BOX 1290, GLENDALE, AZ 85311-1290
PO BOX 1291, GLENDALE, AZ 85311-1291
PO BOX 1292, GLENDALE, AZ 85311-1292
PO BOX 1293, GLENDALE, AZ 85311-1293
PO BOX 1294, GLENDALE, AZ 85311-1294
PO BOX 1295, GLENDALE, AZ 85311-1295
PO BOX 1296, GLENDALE, AZ 85311-1296
PO BOX 1297, GLENDALE, AZ 85311-1297
PO BOX 1298, GLENDALE, AZ 85311-1298
PO BOX 1299, GLENDALE, AZ 85311-1299
PO BOX 1300, GLENDALE, AZ 85311-1300
PO BOX 1301, GLENDALE, AZ 85311-1301
PO BOX 1302, GLENDALE, AZ 85311-1302
PO BOX 1303, GLENDALE, AZ 85311-1303
PO BOX 1304, GLENDALE, AZ 85311-1304
PO BOX 1305, GLENDALE, AZ 85311-1305
PO BOX 1306, GLENDALE, AZ 85311-1306
PO BOX 1307, GLENDALE, AZ 85311-1307
PO BOX 1308, GLENDALE, AZ 85311-1308
PO BOX 1309, GLENDALE, AZ 85311-1309
PO BOX 1310, GLENDALE, AZ 85311-1310
PO BOX 1311, GLENDALE, AZ 85311-1311
PO BOX 1312, GLENDALE, AZ 85311-1312
PO BOX 1313, GLENDALE, AZ 85311-1313
PO BOX 1314, GLENDALE, AZ 85311-1314
PO BOX 1315, GLENDALE, AZ 85311-1315
PO BOX 1316, GLENDALE, AZ 85311-1316
PO BOX 1317, GLENDALE, AZ 85311-1317
PO BOX 1318, GLENDALE, AZ 85311-1318
PO BOX 1319, GLENDALE, AZ 85311-1319
PO BOX 1320, GLENDALE, AZ 85311-1320
PO BOX 1321, GLENDALE, AZ 85311-1321
PO BOX 1322, GLENDALE, AZ 85311-1322
PO BOX 1323, GLENDALE, AZ 85311-1323
PO BOX 1324, GLENDALE, AZ 85311-1324
PO BOX 1325, GLENDALE, AZ 85311-1325
PO BOX 1326, GLENDALE, AZ 85311-1326
PO BOX 1327, GLENDALE, AZ 85311-1327
PO BOX 1328, GLENDALE, AZ 85311-1328
PO BOX 1329, GLENDALE, AZ 85311-1329
PO BOX 1330, GLENDALE, AZ 85311-1330
PO BOX 1331, GLENDALE, AZ 85311-1331
PO BOX 1332, GLENDALE, AZ 85311-1332
PO BOX 1333, GLENDALE, AZ 85311-1333
PO BOX 1334, GLENDALE, AZ 85311-1334
PO BOX 1335, GLENDALE, AZ 85311-1335
PO BOX 1336, GLENDALE, AZ 85311-1336
PO BOX 1337, GLENDALE, AZ 85311-1337
PO BOX 1338, GLENDALE, AZ 85311-1338
PO BOX 1339, GLENDALE, AZ 85311-1339
PO BOX 1340, GLENDALE, AZ 85311-1340
PO BOX 1341, GLENDALE, AZ 85311-1341
PO BOX 1342, GLENDALE, AZ 85311-1342
PO BOX 1343, GLENDALE, AZ 85311-1343
PO BOX 1344, GLENDALE, AZ 85311-1344
PO BOX 1345, GLENDALE, AZ 85311-1345
PO BOX 1346, GLENDALE, AZ 85311-1346
PO BOX 1347, GLENDALE, AZ 85311-1347
PO BOX 1348, GLENDALE, AZ 85311-1348
PO BOX 1349, GLENDALE, AZ 85311-1349
PO BOX 1350, GLENDALE, AZ 85311-1350
PO BOX 1351, GLENDALE, AZ 85311-1351
PO BOX 1352, GLENDALE, AZ 85311-1352
PO BOX 1353, GLENDALE, AZ 85311-1353
PO BOX 1354, GLENDALE, AZ 85311-1354
PO BOX 1355, GLENDALE, AZ 85311-1355
PO BOX 1356, GLENDALE, AZ 85311-1356
PO BOX 1357, GLENDALE, AZ 85311-1357
PO BOX 1358, GLENDALE, AZ 85311-1358
PO BOX 1359, GLENDALE, AZ 85311-1359
PO BOX 1360, GLENDALE, AZ 85311-1360
PO BOX 1361, GLENDALE, AZ 85311-1361
PO BOX 1362, GLENDALE, AZ 85311-1362
PO BOX 1363, GLENDALE, AZ 85311-1363
PO BOX 1364, GLENDALE, AZ 85311-1364
PO BOX 1365, GLENDALE, AZ 85311-1365
PO BOX 1366, GLENDALE, AZ 85311-1366
PO BOX 1367, GLENDALE, AZ 85311-1367
PO BOX 1368, GLENDALE, AZ 85311-1368
PO BOX 1369, GLENDALE, AZ 85311-1369
PO BOX 1370, GLENDALE, AZ 85311-1370
PO BOX 1371, GLENDALE, AZ 85311-1371
PO BOX 1372, GLENDALE, AZ 85311-1372
PO BOX 1373, GLENDALE, AZ 85311-1373
PO BOX 1374, GLENDALE, AZ 85311-1374
PO BOX 1375, GLENDALE, AZ 85311-1375
PO BOX 1376, GLENDALE, AZ 85311-1376
PO BOX 1377, GLENDALE, AZ 85311-1377
PO BOX 1378, GLENDALE, AZ 85311-1378
PO BOX 1379, GLENDALE, AZ 85311-1379
PO BOX 1380, GLENDALE, AZ 85311-1380
PO BOX 1381, GLENDALE, AZ 85311-1381
PO BOX 1382, GLENDALE, AZ 85311-1382
PO BOX 1383, GLENDALE, AZ 85311-1383
PO BOX 1384, GLENDALE, AZ 85311-1384
PO BOX 1385, GLENDALE, AZ 85311-1385
PO BOX 1386, GLENDALE, AZ 85311-1386
PO BOX 1387, GLENDALE, AZ 85311-1387
PO BOX 1388, GLENDALE, AZ 85311-1388
PO BOX 1389, GLENDALE, AZ 85311-1389
PO BOX 1390, GLENDALE, AZ 85311-1390
PO BOX 1391, GLENDALE, AZ 85311-1391
PO BOX 1392, GLENDALE, AZ 85311-1392
PO BOX 1393, GLENDALE, AZ 85311-1393
PO BOX 1394, GLENDALE, AZ 85311-1394
PO BOX 1395, GLENDALE, AZ 85311-1395
PO BOX 1396, GLENDALE, AZ 85311-1396
PO BOX 1397, GLENDALE, AZ 85311-1397
PO BOX 1398, GLENDALE, AZ 85311-1398
PO BOX 1399, GLENDALE, AZ 85311-1399
PO BOX 1400, GLENDALE, AZ 85311-1400
PO BOX 1401, GLENDALE, AZ 85311-1401
PO BOX 1402, GLENDALE, AZ 85311-1402
PO BOX 1403, GLENDALE, AZ 85311-1403
PO BOX 1404, GLENDALE, AZ 85311-1404
PO BOX 1405, GLENDALE, AZ 85311-1405
PO BOX 1406, GLENDALE, AZ 85311-1406
PO BOX 1407, GLENDALE, AZ 85311-1407
PO BOX 1408, GLENDALE, AZ 85311-1408
PO BOX 1409, GLENDALE, AZ 85311-1409
PO BOX 1410, GLENDALE, AZ 85311-1410
PO BOX 1411, GLENDALE, AZ 85311-1411
PO BOX 1412, GLENDALE, AZ 85311-1412
PO BOX 1413, GLENDALE, AZ 85311-1413
PO BOX 1414, GLENDALE, AZ 85311-1414
PO BOX 1415, GLENDALE, AZ 85311-1415
PO BOX 1416, GLENDALE, AZ 85311-1416
PO BOX 1417, GLENDALE, AZ 85311-1417
PO BOX 1418, GLENDALE, AZ 85311-1418
PO BOX 1419, GLENDALE, AZ 85311-1419
PO BOX 1420, GLENDALE, AZ 85311-1420
PO BOX 1421, GLENDALE, AZ 85311-1421
PO BOX 1422, GLENDALE, AZ 85311-1422
PO BOX 1423, GLENDALE, AZ 85311-1423
PO BOX 1424, GLENDALE, AZ 85311-1424
PO BOX 1425, GLENDALE, AZ 85311-1425
PO BOX 1426, GLENDALE, AZ 85311-1426
PO BOX 1427, GLENDALE, AZ 85311-1427
PO BOX 1428, GLENDALE, AZ 85311-1428
PO BOX 1429, GLENDALE, AZ 85311-1429
PO BOX 1430, GLENDALE, AZ 85311-1430
PO BOX 1431, GLENDALE, AZ 85311-1431
PO BOX 1432, GLENDALE, AZ 85311-1432
PO BOX 1433, GLENDALE, AZ 85311-1433
PO BOX 1434, GLENDALE, AZ 85311-1434
PO BOX 1435, GLENDALE, AZ 85311-1435
PO BOX 1436, GLENDALE, AZ 85311-1436
PO BOX 1437, GLENDALE, AZ 85311-1437
PO BOX 1438, GLENDALE, AZ 85311-1438
PO BOX 1439, GLENDALE, AZ 85311-1439
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