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 1201, FALLBROOK, CA 92088-1201
PO BOX 1202, FALLBROOK, CA 92088-1202
PO BOX 1203, FALLBROOK, CA 92088-1203
PO BOX 1204, FALLBROOK, CA 92088-1204
PO BOX 1205, FALLBROOK, CA 92088-1205
PO BOX 1206, FALLBROOK, CA 92088-1206
PO BOX 1207, FALLBROOK, CA 92088-1207
PO BOX 1208, FALLBROOK, CA 92088-1208
PO BOX 1209, FALLBROOK, CA 92088-1209
PO BOX 1210, FALLBROOK, CA 92088-1210
PO BOX 1211, FALLBROOK, CA 92088-1211
PO BOX 1212, FALLBROOK, CA 92088-1212
PO BOX 1213, FALLBROOK, CA 92088-1213
PO BOX 1214, FALLBROOK, CA 92088-1214
PO BOX 1215, FALLBROOK, CA 92088-1215
PO BOX 1216, FALLBROOK, CA 92088-1216
PO BOX 1217, FALLBROOK, CA 92088-1217
PO BOX 1218, FALLBROOK, CA 92088-1218
PO BOX 1219, FALLBROOK, CA 92088-1219
PO BOX 1220, FALLBROOK, CA 92088-1220
PO BOX 1221, FALLBROOK, CA 92088-1221
PO BOX 1222, FALLBROOK, CA 92088-1222
PO BOX 1223, FALLBROOK, CA 92088-1223
PO BOX 1224, FALLBROOK, CA 92088-1224
PO BOX 1225, FALLBROOK, CA 92088-1225
PO BOX 1226, FALLBROOK, CA 92088-1226
PO BOX 1227, FALLBROOK, CA 92088-1227
PO BOX 1228, FALLBROOK, CA 92088-1228
PO BOX 1229, FALLBROOK, CA 92088-1229
PO BOX 1230, FALLBROOK, CA 92088-1230
PO BOX 1231, FALLBROOK, CA 92088-1231
PO BOX 1232, FALLBROOK, CA 92088-1232
PO BOX 1233, FALLBROOK, CA 92088-1233
PO BOX 1234, FALLBROOK, CA 92088-1234
PO BOX 1235, FALLBROOK, CA 92088-1235
PO BOX 1236, FALLBROOK, CA 92088-1236
PO BOX 1237, FALLBROOK, CA 92088-1237
PO BOX 1238, FALLBROOK, CA 92088-1238
PO BOX 1239, FALLBROOK, CA 92088-1239
PO BOX 1240, FALLBROOK, CA 92088-1240
PO BOX 1241, FALLBROOK, CA 92088-1241
PO BOX 1242, FALLBROOK, CA 92088-1242
PO BOX 1243, FALLBROOK, CA 92088-1243
PO BOX 1244, FALLBROOK, CA 92088-1244
PO BOX 1245, FALLBROOK, CA 92088-1245
PO BOX 1246, FALLBROOK, CA 92088-1246
PO BOX 1247, FALLBROOK, CA 92088-1247
PO BOX 1248, FALLBROOK, CA 92088-1248
PO BOX 1249, FALLBROOK, CA 92088-1249
PO BOX 1250, FALLBROOK, CA 92088-1250
PO BOX 1251, FALLBROOK, CA 92088-1251
PO BOX 1252, FALLBROOK, CA 92088-1252
PO BOX 1253, FALLBROOK, CA 92088-1253
PO BOX 1254, FALLBROOK, CA 92088-1254
PO BOX 1255, FALLBROOK, CA 92088-1255
PO BOX 1256, FALLBROOK, CA 92088-1256
PO BOX 1257, FALLBROOK, CA 92088-1257
PO BOX 1258, FALLBROOK, CA 92088-1258
PO BOX 1259, FALLBROOK, CA 92088-1259
PO BOX 1260, FALLBROOK, CA 92088-1260
PO BOX 1261, FALLBROOK, CA 92088-1261
PO BOX 1262, FALLBROOK, CA 92088-1262
PO BOX 1263, FALLBROOK, CA 92088-1263
PO BOX 1264, FALLBROOK, CA 92088-1264
PO BOX 1265, FALLBROOK, CA 92088-1265
PO BOX 1266, FALLBROOK, CA 92088-1266
PO BOX 1267, FALLBROOK, CA 92088-1267
PO BOX 1268, FALLBROOK, CA 92088-1268
PO BOX 1269, FALLBROOK, CA 92088-1269
PO BOX 1270, FALLBROOK, CA 92088-1270
PO BOX 1271, FALLBROOK, CA 92088-1271
PO BOX 1272, FALLBROOK, CA 92088-1272
PO BOX 1273, FALLBROOK, CA 92088-1273
PO BOX 1274, FALLBROOK, CA 92088-1274
PO BOX 1275, FALLBROOK, CA 92088-1275
PO BOX 1276, FALLBROOK, CA 92088-1276
PO BOX 1277, FALLBROOK, CA 92088-1277
PO BOX 1278, FALLBROOK, CA 92088-1278
PO BOX 1279, FALLBROOK, CA 92088-1279
PO BOX 1280, FALLBROOK, CA 92088-1280
PO BOX 1281, FALLBROOK, CA 92088-1281
PO BOX 1282, FALLBROOK, CA 92088-1282
PO BOX 1283, FALLBROOK, CA 92088-1283
PO BOX 1284, FALLBROOK, CA 92088-1284
PO BOX 1285, FALLBROOK, CA 92088-1285
PO BOX 1286, FALLBROOK, CA 92088-1286
PO BOX 1287, FALLBROOK, CA 92088-1287
PO BOX 1288, FALLBROOK, CA 92088-1288
PO BOX 1289, FALLBROOK, CA 92088-1289
PO BOX 1290, FALLBROOK, CA 92088-1290
PO BOX 1291, FALLBROOK, CA 92088-1291
PO BOX 1292, FALLBROOK, CA 92088-1292
PO BOX 1293, FALLBROOK, CA 92088-1293
PO BOX 1294, FALLBROOK, CA 92088-1294
PO BOX 1295, FALLBROOK, CA 92088-1295
PO BOX 1296, FALLBROOK, CA 92088-1296
PO BOX 1297, FALLBROOK, CA 92088-1297
PO BOX 1298, FALLBROOK, CA 92088-1298
PO BOX 1299, FALLBROOK, CA 92088-1299
PO BOX 1300, FALLBROOK, CA 92088-1300
PO BOX 1301, FALLBROOK, CA 92088-1301
PO BOX 1302, FALLBROOK, CA 92088-1302
PO BOX 1303, FALLBROOK, CA 92088-1303
PO BOX 1304, FALLBROOK, CA 92088-1304
PO BOX 1305, FALLBROOK, CA 92088-1305
PO BOX 1306, FALLBROOK, CA 92088-1306
PO BOX 1307, FALLBROOK, CA 92088-1307
PO BOX 1308, FALLBROOK, CA 92088-1308
PO BOX 1309, FALLBROOK, CA 92088-1309
PO BOX 1310, FALLBROOK, CA 92088-1310
PO BOX 1311, FALLBROOK, CA 92088-1311
PO BOX 1312, FALLBROOK, CA 92088-1312
PO BOX 1313, FALLBROOK, CA 92088-1313
PO BOX 1314, FALLBROOK, CA 92088-1314
PO BOX 1315, FALLBROOK, CA 92088-1315
PO BOX 1316, FALLBROOK, CA 92088-1316
PO BOX 1317, FALLBROOK, CA 92088-1317
PO BOX 1318, FALLBROOK, CA 92088-1318
PO BOX 1319, FALLBROOK, CA 92088-1319
PO BOX 1320, FALLBROOK, CA 92088-1320
PO BOX 1321, FALLBROOK, CA 92088-1321
PO BOX 1322, FALLBROOK, CA 92088-1322
PO BOX 1323, FALLBROOK, CA 92088-1323
PO BOX 1324, FALLBROOK, CA 92088-1324
PO BOX 1325, FALLBROOK, CA 92088-1325
PO BOX 1326, FALLBROOK, CA 92088-1326
PO BOX 1327, FALLBROOK, CA 92088-1327
PO BOX 1328, FALLBROOK, CA 92088-1328
PO BOX 1329, FALLBROOK, CA 92088-1329
PO BOX 1330, FALLBROOK, CA 92088-1330
PO BOX 1331, FALLBROOK, CA 92088-1331
PO BOX 1332, FALLBROOK, CA 92088-1332
PO BOX 1333, FALLBROOK, CA 92088-1333
PO BOX 1334, FALLBROOK, CA 92088-1334
PO BOX 1335, FALLBROOK, CA 92088-1335
PO BOX 1336, FALLBROOK, CA 92088-1336
PO BOX 1337, FALLBROOK, CA 92088-1337
PO BOX 1338, FALLBROOK, CA 92088-1338
PO BOX 1339, FALLBROOK, CA 92088-1339
PO BOX 1340, FALLBROOK, CA 92088-1340
PO BOX 1341, FALLBROOK, CA 92088-1341
PO BOX 1342, FALLBROOK, CA 92088-1342
PO BOX 1343, FALLBROOK, CA 92088-1343
PO BOX 1344, FALLBROOK, CA 92088-1344
PO BOX 1345, FALLBROOK, CA 92088-1345
PO BOX 1346, FALLBROOK, CA 92088-1346
PO BOX 1347, FALLBROOK, CA 92088-1347
PO BOX 1348, FALLBROOK, CA 92088-1348
PO BOX 1349, FALLBROOK, CA 92088-1349
PO BOX 1350, FALLBROOK, CA 92088-1350
PO BOX 1351, FALLBROOK, CA 92088-1351
PO BOX 1352, FALLBROOK, CA 92088-1352
PO BOX 1353, FALLBROOK, CA 92088-1353
PO BOX 1354, FALLBROOK, CA 92088-1354
PO BOX 1355, FALLBROOK, CA 92088-1355
PO BOX 1356, FALLBROOK, CA 92088-1356
PO BOX 1357, FALLBROOK, CA 92088-1357
PO BOX 1358, FALLBROOK, CA 92088-1358
PO BOX 1359, FALLBROOK, CA 92088-1359
PO BOX 1360, FALLBROOK, CA 92088-1360
PO BOX 1361, FALLBROOK, CA 92088-1361
PO BOX 1362, FALLBROOK, CA 92088-1362
PO BOX 1363, FALLBROOK, CA 92088-1363
PO BOX 1364, FALLBROOK, CA 92088-1364
PO BOX 1365, FALLBROOK, CA 92088-1365
PO BOX 1366, FALLBROOK, CA 92088-1366
PO BOX 1367, FALLBROOK, CA 92088-1367
PO BOX 1368, FALLBROOK, CA 92088-1368
PO BOX 1369, FALLBROOK, CA 92088-1369
PO BOX 1370, FALLBROOK, CA 92088-1370
PO BOX 1371, FALLBROOK, CA 92088-1371
PO BOX 1372, FALLBROOK, CA 92088-1372
PO BOX 1373, FALLBROOK, CA 92088-1373
PO BOX 1374, FALLBROOK, CA 92088-1374
PO BOX 1375, FALLBROOK, CA 92088-1375
PO BOX 1376, FALLBROOK, CA 92088-1376
PO BOX 1377, FALLBROOK, CA 92088-1377
PO BOX 1378, FALLBROOK, CA 92088-1378
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