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 11201, NEW BRUNSWICK, NJ 08906-1201
PO BOX 11202, NEW BRUNSWICK, NJ 08906-1202
PO BOX 11203, NEW BRUNSWICK, NJ 08906-1203
PO BOX 11204, NEW BRUNSWICK, NJ 08906-1204
PO BOX 11205, NEW BRUNSWICK, NJ 08906-1205
PO BOX 11206, NEW BRUNSWICK, NJ 08906-1206
PO BOX 11207, NEW BRUNSWICK, NJ 08906-1207
PO BOX 11208, NEW BRUNSWICK, NJ 08906-1208
PO BOX 11209, NEW BRUNSWICK, NJ 08906-1209
PO BOX 11210, NEW BRUNSWICK, NJ 08906-1210
PO BOX 11211, NEW BRUNSWICK, NJ 08906-1211
PO BOX 11212, NEW BRUNSWICK, NJ 08906-1212
PO BOX 11213, NEW BRUNSWICK, NJ 08906-1213
PO BOX 11214, NEW BRUNSWICK, NJ 08906-1214
PO BOX 11215, NEW BRUNSWICK, NJ 08906-1215
PO BOX 11216, NEW BRUNSWICK, NJ 08906-1216
PO BOX 11217, NEW BRUNSWICK, NJ 08906-1217
PO BOX 11218, NEW BRUNSWICK, NJ 08906-1218
PO BOX 11219, NEW BRUNSWICK, NJ 08906-1219
PO BOX 11220, NEW BRUNSWICK, NJ 08906-1220
PO BOX 11221, NEW BRUNSWICK, NJ 08906-1221
PO BOX 11222, NEW BRUNSWICK, NJ 08906-1222
PO BOX 11223, NEW BRUNSWICK, NJ 08906-1223
PO BOX 11224, NEW BRUNSWICK, NJ 08906-1224
PO BOX 11225, NEW BRUNSWICK, NJ 08906-1225
PO BOX 11226, NEW BRUNSWICK, NJ 08906-1226
PO BOX 11227, NEW BRUNSWICK, NJ 08906-1227
PO BOX 11228, NEW BRUNSWICK, NJ 08906-1228
PO BOX 11229, NEW BRUNSWICK, NJ 08906-1229
PO BOX 11230, NEW BRUNSWICK, NJ 08906-1230
PO BOX 11231, NEW BRUNSWICK, NJ 08906-1231
PO BOX 11232, NEW BRUNSWICK, NJ 08906-1232
PO BOX 11233, NEW BRUNSWICK, NJ 08906-1233
PO BOX 11234, NEW BRUNSWICK, NJ 08906-1234
PO BOX 11235, NEW BRUNSWICK, NJ 08906-1235
PO BOX 11236, NEW BRUNSWICK, NJ 08906-1236
PO BOX 11237, NEW BRUNSWICK, NJ 08906-1237
PO BOX 11238, NEW BRUNSWICK, NJ 08906-1238
PO BOX 11239, NEW BRUNSWICK, NJ 08906-1239
PO BOX 11240, NEW BRUNSWICK, NJ 08906-1240
PO BOX 11241, NEW BRUNSWICK, NJ 08906-1241
PO BOX 11242, NEW BRUNSWICK, NJ 08906-1242
PO BOX 11243, NEW BRUNSWICK, NJ 08906-1243
PO BOX 11244, NEW BRUNSWICK, NJ 08906-1244
PO BOX 11245, NEW BRUNSWICK, NJ 08906-1245
PO BOX 11246, NEW BRUNSWICK, NJ 08906-1246
PO BOX 11247, NEW BRUNSWICK, NJ 08906-1247
PO BOX 11248, NEW BRUNSWICK, NJ 08906-1248
PO BOX 11249, NEW BRUNSWICK, NJ 08906-1249
PO BOX 11250, NEW BRUNSWICK, NJ 08906-1250
PO BOX 11251, NEW BRUNSWICK, NJ 08906-1251
PO BOX 11252, NEW BRUNSWICK, NJ 08906-1252
PO BOX 11253, NEW BRUNSWICK, NJ 08906-1253
PO BOX 11254, NEW BRUNSWICK, NJ 08906-1254
PO BOX 11255, NEW BRUNSWICK, NJ 08906-1255
PO BOX 11256, NEW BRUNSWICK, NJ 08906-1256
PO BOX 11257, NEW BRUNSWICK, NJ 08906-1257
PO BOX 11258, NEW BRUNSWICK, NJ 08906-1258
PO BOX 11259, NEW BRUNSWICK, NJ 08906-1259
PO BOX 11260, NEW BRUNSWICK, NJ 08906-1260
PO BOX 11261, NEW BRUNSWICK, NJ 08906-1261
PO BOX 11262, NEW BRUNSWICK, NJ 08906-1262
PO BOX 11263, NEW BRUNSWICK, NJ 08906-1263
PO BOX 11264, NEW BRUNSWICK, NJ 08906-1264
PO BOX 11265, NEW BRUNSWICK, NJ 08906-1265
PO BOX 11266, NEW BRUNSWICK, NJ 08906-1266
PO BOX 11267, NEW BRUNSWICK, NJ 08906-1267
PO BOX 11268, NEW BRUNSWICK, NJ 08906-1268
PO BOX 11269, NEW BRUNSWICK, NJ 08906-1269
PO BOX 11270, NEW BRUNSWICK, NJ 08906-1270
PO BOX 11271, NEW BRUNSWICK, NJ 08906-1271
PO BOX 11272, NEW BRUNSWICK, NJ 08906-1272
PO BOX 11273, NEW BRUNSWICK, NJ 08906-1273
PO BOX 11274, NEW BRUNSWICK, NJ 08906-1274
PO BOX 11275, NEW BRUNSWICK, NJ 08906-1275
PO BOX 11276, NEW BRUNSWICK, NJ 08906-1276
PO BOX 11277, NEW BRUNSWICK, NJ 08906-1277
PO BOX 11278, NEW BRUNSWICK, NJ 08906-1278
PO BOX 11279, NEW BRUNSWICK, NJ 08906-1279
PO BOX 11280, NEW BRUNSWICK, NJ 08906-1280
PO BOX 11281, NEW BRUNSWICK, NJ 08906-1281
PO BOX 11282, NEW BRUNSWICK, NJ 08906-1282
PO BOX 11283, NEW BRUNSWICK, NJ 08906-1283
PO BOX 11284, NEW BRUNSWICK, NJ 08906-1284
PO BOX 11285, NEW BRUNSWICK, NJ 08906-1285
PO BOX 11286, NEW BRUNSWICK, NJ 08906-1286
PO BOX 11287, NEW BRUNSWICK, NJ 08906-1287
PO BOX 11288, NEW BRUNSWICK, NJ 08906-1288
PO BOX 11289, NEW BRUNSWICK, NJ 08906-1289
PO BOX 11290, NEW BRUNSWICK, NJ 08906-1290
PO BOX 11291, NEW BRUNSWICK, NJ 08906-1291
PO BOX 11292, NEW BRUNSWICK, NJ 08906-1292
PO BOX 11293, NEW BRUNSWICK, NJ 08906-1293
PO BOX 11294, NEW BRUNSWICK, NJ 08906-1294
PO BOX 11295, NEW BRUNSWICK, NJ 08906-1295
PO BOX 11296, NEW BRUNSWICK, NJ 08906-1296
PO BOX 11297, NEW BRUNSWICK, NJ 08906-1297
PO BOX 11298, NEW BRUNSWICK, NJ 08906-1298
PO BOX 11299, NEW BRUNSWICK, NJ 08906-1299
PO BOX 11300, NEW BRUNSWICK, NJ 08906-1300
PO BOX 11301, NEW BRUNSWICK, NJ 08906-1301
PO BOX 11302, NEW BRUNSWICK, NJ 08906-1302
PO BOX 11303, NEW BRUNSWICK, NJ 08906-1303
PO BOX 11304, NEW BRUNSWICK, NJ 08906-1304
PO BOX 11305, NEW BRUNSWICK, NJ 08906-1305
PO BOX 11306, NEW BRUNSWICK, NJ 08906-1306
PO BOX 11307, NEW BRUNSWICK, NJ 08906-1307
PO BOX 11308, NEW BRUNSWICK, NJ 08906-1308
PO BOX 11309, NEW BRUNSWICK, NJ 08906-1309
PO BOX 11310, NEW BRUNSWICK, NJ 08906-1310
PO BOX 11311, NEW BRUNSWICK, NJ 08906-1311
PO BOX 11312, NEW BRUNSWICK, NJ 08906-1312
PO BOX 11313, NEW BRUNSWICK, NJ 08906-1313
PO BOX 11314, NEW BRUNSWICK, NJ 08906-1314
PO BOX 11315, NEW BRUNSWICK, NJ 08906-1315
PO BOX 11316, NEW BRUNSWICK, NJ 08906-1316
PO BOX 11317, NEW BRUNSWICK, NJ 08906-1317
PO BOX 11318, NEW BRUNSWICK, NJ 08906-1318
PO BOX 11319, NEW BRUNSWICK, NJ 08906-1319
PO BOX 11320, NEW BRUNSWICK, NJ 08906-1320
PO BOX 11321, NEW BRUNSWICK, NJ 08906-1321
PO BOX 11322, NEW BRUNSWICK, NJ 08906-1322
PO BOX 11323, NEW BRUNSWICK, NJ 08906-1323
PO BOX 11324, NEW BRUNSWICK, NJ 08906-1324
PO BOX 11325, NEW BRUNSWICK, NJ 08906-1325
PO BOX 11326, NEW BRUNSWICK, NJ 08906-1326
PO BOX 11327, NEW BRUNSWICK, NJ 08906-1327
PO BOX 11328, NEW BRUNSWICK, NJ 08906-1328
PO BOX 11329, NEW BRUNSWICK, NJ 08906-1329
PO BOX 11330, NEW BRUNSWICK, NJ 08906-1330
PO BOX 11331, NEW BRUNSWICK, NJ 08906-1331
PO BOX 11332, NEW BRUNSWICK, NJ 08906-1332
PO BOX 11333, NEW BRUNSWICK, NJ 08906-1333
PO BOX 11334, NEW BRUNSWICK, NJ 08906-1334
PO BOX 11335, NEW BRUNSWICK, NJ 08906-1335
PO BOX 11336, NEW BRUNSWICK, NJ 08906-1336
PO BOX 11337, NEW BRUNSWICK, NJ 08906-1337
PO BOX 11338, NEW BRUNSWICK, NJ 08906-1338
PO BOX 11339, NEW BRUNSWICK, NJ 08906-1339
PO BOX 11340, NEW BRUNSWICK, NJ 08906-1340
PO BOX 11341, NEW BRUNSWICK, NJ 08906-1341
PO BOX 11342, NEW BRUNSWICK, NJ 08906-1342
PO BOX 11343, NEW BRUNSWICK, NJ 08906-1343
PO BOX 11344, NEW BRUNSWICK, NJ 08906-1344
PO BOX 11345, NEW BRUNSWICK, NJ 08906-1345
PO BOX 11346, NEW BRUNSWICK, NJ 08906-1346
PO BOX 11347, NEW BRUNSWICK, NJ 08906-1347
PO BOX 11348, NEW BRUNSWICK, NJ 08906-1348
PO BOX 11349, NEW BRUNSWICK, NJ 08906-1349
PO BOX 11350, NEW BRUNSWICK, NJ 08906-1350
PO BOX 11351, NEW BRUNSWICK, NJ 08906-1351
PO BOX 11352, NEW BRUNSWICK, NJ 08906-1352
PO BOX 11353, NEW BRUNSWICK, NJ 08906-1353
PO BOX 11354, NEW BRUNSWICK, NJ 08906-1354
PO BOX 11355, NEW BRUNSWICK, NJ 08906-1355
PO BOX 11356, NEW BRUNSWICK, NJ 08906-1356
PO BOX 11357, NEW BRUNSWICK, NJ 08906-1357
PO BOX 11358, NEW BRUNSWICK, NJ 08906-1358
PO BOX 11359, NEW BRUNSWICK, NJ 08906-1359
PO BOX 11360, NEW BRUNSWICK, NJ 08906-1360
PO BOX 11361, NEW BRUNSWICK, NJ 08906-1361
PO BOX 11362, NEW BRUNSWICK, NJ 08906-1362
PO BOX 11363, NEW BRUNSWICK, NJ 08906-1363
PO BOX 11364, NEW BRUNSWICK, NJ 08906-1364
PO BOX 11365, NEW BRUNSWICK, NJ 08906-1365
PO BOX 11366, NEW BRUNSWICK, NJ 08906-1366
PO BOX 11367, NEW BRUNSWICK, NJ 08906-1367
PO BOX 11368, NEW BRUNSWICK, NJ 08906-1368
PO BOX 11369, NEW BRUNSWICK, NJ 08906-1369
PO BOX 11370, NEW BRUNSWICK, NJ 08906-1370
PO BOX 11371, NEW BRUNSWICK, NJ 08906-1371
PO BOX 11372, NEW BRUNSWICK, NJ 08906-1372
PO BOX 11373, NEW BRUNSWICK, NJ 08906-1373
PO BOX 11374, NEW BRUNSWICK, NJ 08906-1374
PO BOX 11375, NEW BRUNSWICK, NJ 08906-1375
PO BOX 11376, NEW BRUNSWICK, NJ 08906-1376
PO BOX 11377, NEW BRUNSWICK, NJ 08906-1377
PO BOX 11378, NEW BRUNSWICK, NJ 08906-1378
PO BOX 11379, NEW BRUNSWICK, NJ 08906-1379
PO BOX 11380, NEW BRUNSWICK, NJ 08906-1380
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