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 11281, WILMINGTON, NC 28404-1281
PO BOX 11282, WILMINGTON, NC 28404-1282
PO BOX 11283, WILMINGTON, NC 28404-1283
PO BOX 11284, WILMINGTON, NC 28404-1284
PO BOX 11285, WILMINGTON, NC 28404-1285
PO BOX 11286, WILMINGTON, NC 28404-1286
PO BOX 11287, WILMINGTON, NC 28404-1287
PO BOX 11288, WILMINGTON, NC 28404-1288
PO BOX 11289, WILMINGTON, NC 28404-1289
PO BOX 11290, WILMINGTON, NC 28404-1290
PO BOX 11291, WILMINGTON, NC 28404-1291
PO BOX 11292, WILMINGTON, NC 28404-1292
PO BOX 11293, WILMINGTON, NC 28404-1293
PO BOX 11294, WILMINGTON, NC 28404-1294
PO BOX 11295, WILMINGTON, NC 28404-1295
PO BOX 11296, WILMINGTON, NC 28404-1296
PO BOX 11297, WILMINGTON, NC 28404-1297
PO BOX 11298, WILMINGTON, NC 28404-1298
PO BOX 11299, WILMINGTON, NC 28404-1299
PO BOX 11300, WILMINGTON, NC 28404-1300
PO BOX 11301, WILMINGTON, NC 28404-1301
PO BOX 11302, WILMINGTON, NC 28404-1302
PO BOX 11303, WILMINGTON, NC 28404-1303
PO BOX 11304, WILMINGTON, NC 28404-1304
PO BOX 11305, WILMINGTON, NC 28404-1305
PO BOX 11306, WILMINGTON, NC 28404-1306
PO BOX 11307, WILMINGTON, NC 28404-1307
PO BOX 11308, WILMINGTON, NC 28404-1308
PO BOX 11309, WILMINGTON, NC 28404-1309
PO BOX 11310, WILMINGTON, NC 28404-1310
PO BOX 11311, WILMINGTON, NC 28404-1311
PO BOX 11312, WILMINGTON, NC 28404-1312
PO BOX 11313, WILMINGTON, NC 28404-1313
PO BOX 11314, WILMINGTON, NC 28404-1314
PO BOX 11315, WILMINGTON, NC 28404-1315
PO BOX 11316, WILMINGTON, NC 28404-1316
PO BOX 11317, WILMINGTON, NC 28404-1317
PO BOX 11318, WILMINGTON, NC 28404-1318
PO BOX 11319, WILMINGTON, NC 28404-1319
PO BOX 11320, WILMINGTON, NC 28404-1320
PO BOX 11321, WILMINGTON, NC 28404-1321
PO BOX 11322, WILMINGTON, NC 28404-1322
PO BOX 11323, WILMINGTON, NC 28404-1323
PO BOX 11324, WILMINGTON, NC 28404-1324
PO BOX 11325, WILMINGTON, NC 28404-1325
PO BOX 11326, WILMINGTON, NC 28404-1326
PO BOX 11327, WILMINGTON, NC 28404-1327
PO BOX 11328, WILMINGTON, NC 28404-1328
PO BOX 11329, WILMINGTON, NC 28404-1329
PO BOX 11330, WILMINGTON, NC 28404-1330
PO BOX 11331, WILMINGTON, NC 28404-1331
PO BOX 11332, WILMINGTON, NC 28404-1332
PO BOX 11333, WILMINGTON, NC 28404-1333
PO BOX 11334, WILMINGTON, NC 28404-1334
PO BOX 11335, WILMINGTON, NC 28404-1335
PO BOX 11336, WILMINGTON, NC 28404-1336
PO BOX 11337, WILMINGTON, NC 28404-1337
PO BOX 11338, WILMINGTON, NC 28404-1338
PO BOX 11339, WILMINGTON, NC 28404-1339
PO BOX 11340, WILMINGTON, NC 28404-1340
PO BOX 11341, WILMINGTON, NC 28404-1341
PO BOX 11342, WILMINGTON, NC 28404-1342
PO BOX 11343, WILMINGTON, NC 28404-1343
PO BOX 11344, WILMINGTON, NC 28404-1344
PO BOX 11345, WILMINGTON, NC 28404-1345
PO BOX 11346, WILMINGTON, NC 28404-1346
PO BOX 11347, WILMINGTON, NC 28404-1347
PO BOX 11348, WILMINGTON, NC 28404-1348
PO BOX 11349, WILMINGTON, NC 28404-1349
PO BOX 11350, WILMINGTON, NC 28404-1350
PO BOX 11351, WILMINGTON, NC 28404-1351
PO BOX 11352, WILMINGTON, NC 28404-1352
PO BOX 11353, WILMINGTON, NC 28404-1353
PO BOX 11354, WILMINGTON, NC 28404-1354
PO BOX 11355, WILMINGTON, NC 28404-1355
PO BOX 11356, WILMINGTON, NC 28404-1356
PO BOX 11357, WILMINGTON, NC 28404-1357
PO BOX 11358, WILMINGTON, NC 28404-1358
PO BOX 11359, WILMINGTON, NC 28404-1359
PO BOX 11360, WILMINGTON, NC 28404-1360
PO BOX 11361, WILMINGTON, NC 28404-1361
PO BOX 11362, WILMINGTON, NC 28404-1362
PO BOX 11363, WILMINGTON, NC 28404-1363
PO BOX 11364, WILMINGTON, NC 28404-1364
PO BOX 11365, WILMINGTON, NC 28404-1365
PO BOX 11366, WILMINGTON, NC 28404-1366
PO BOX 11367, WILMINGTON, NC 28404-1367
PO BOX 11368, WILMINGTON, NC 28404-1368
PO BOX 11369, WILMINGTON, NC 28404-1369
PO BOX 11370, WILMINGTON, NC 28404-1370
PO BOX 11371, WILMINGTON, NC 28404-1371
PO BOX 11372, WILMINGTON, NC 28404-1372
PO BOX 11373, WILMINGTON, NC 28404-1373
PO BOX 11374, WILMINGTON, NC 28404-1374
PO BOX 11375, WILMINGTON, NC 28404-1375
PO BOX 11376, WILMINGTON, NC 28404-1376
PO BOX 11377, WILMINGTON, NC 28404-1377
PO BOX 11378, WILMINGTON, NC 28404-1378
PO BOX 11379, WILMINGTON, NC 28404-1379
PO BOX 11380, WILMINGTON, NC 28404-1380
PO BOX 11381, WILMINGTON, NC 28404-1381
PO BOX 11382, WILMINGTON, NC 28404-1382
PO BOX 11383, WILMINGTON, NC 28404-1383
PO BOX 11384, WILMINGTON, NC 28404-1384
PO BOX 11385, WILMINGTON, NC 28404-1385
PO BOX 11386, WILMINGTON, NC 28404-1386
PO BOX 11387, WILMINGTON, NC 28404-1387
PO BOX 11388, WILMINGTON, NC 28404-1388
PO BOX 11389, WILMINGTON, NC 28404-1389
PO BOX 11390, WILMINGTON, NC 28404-1390
PO BOX 11391, WILMINGTON, NC 28404-1391
PO BOX 11392, WILMINGTON, NC 28404-1392
PO BOX 11393, WILMINGTON, NC 28404-1393
PO BOX 11394, WILMINGTON, NC 28404-1394
PO BOX 11395, WILMINGTON, NC 28404-1395
PO BOX 11396, WILMINGTON, NC 28404-1396
PO BOX 11397, WILMINGTON, NC 28404-1397
PO BOX 11398, WILMINGTON, NC 28404-1398
PO BOX 11399, WILMINGTON, NC 28404-1399
PO BOX 11400, WILMINGTON, NC 28404-1400
PO BOX 11401, WILMINGTON, NC 28404-1401
PO BOX 11402, WILMINGTON, NC 28404-1402
PO BOX 11403, WILMINGTON, NC 28404-1403
PO BOX 11404, WILMINGTON, NC 28404-1404
PO BOX 11405, WILMINGTON, NC 28404-1405
PO BOX 11406, WILMINGTON, NC 28404-1406
PO BOX 11407, WILMINGTON, NC 28404-1407
PO BOX 11408, WILMINGTON, NC 28404-1408
PO BOX 11409, WILMINGTON, NC 28404-1409
PO BOX 11410, WILMINGTON, NC 28404-1410
PO BOX 11411, WILMINGTON, NC 28404-1411
PO BOX 11412, WILMINGTON, NC 28404-1412
PO BOX 11413, WILMINGTON, NC 28404-1413
PO BOX 11414, WILMINGTON, NC 28404-1414
PO BOX 11415, WILMINGTON, NC 28404-1415
PO BOX 11416, WILMINGTON, NC 28404-1416
PO BOX 11417, WILMINGTON, NC 28404-1417
PO BOX 11418, WILMINGTON, NC 28404-1418
PO BOX 11419, WILMINGTON, NC 28404-1419
PO BOX 11420, WILMINGTON, NC 28404-1420
PO BOX 11421, WILMINGTON, NC 28404-1421
PO BOX 11422, WILMINGTON, NC 28404-1422
PO BOX 11423, WILMINGTON, NC 28404-1423
PO BOX 11424, WILMINGTON, NC 28404-1424
PO BOX 11425, WILMINGTON, NC 28404-1425
PO BOX 11426, WILMINGTON, NC 28404-1426
PO BOX 11427, WILMINGTON, NC 28404-1427
PO BOX 11428, WILMINGTON, NC 28404-1428
PO BOX 11429, WILMINGTON, NC 28404-1429
PO BOX 11430, WILMINGTON, NC 28404-1430
PO BOX 11431, WILMINGTON, NC 28404-1431
PO BOX 11432, WILMINGTON, NC 28404-1432
PO BOX 11433, WILMINGTON, NC 28404-1433
PO BOX 11434, WILMINGTON, NC 28404-1434
PO BOX 11435, WILMINGTON, NC 28404-1435
PO BOX 11436, WILMINGTON, NC 28404-1436
PO BOX 11437, WILMINGTON, NC 28404-1437
PO BOX 11438, WILMINGTON, NC 28404-1438
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