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, FORT WALTON BEACH, FL 32549-1201
PO BOX 1202, FORT WALTON BEACH, FL 32549-1202
PO BOX 1203, FORT WALTON BEACH, FL 32549-1203
PO BOX 1204, FORT WALTON BEACH, FL 32549-1204
PO BOX 1205, FORT WALTON BEACH, FL 32549-1205
PO BOX 1206, FORT WALTON BEACH, FL 32549-1206
PO BOX 1207, FORT WALTON BEACH, FL 32549-1207
PO BOX 1208, FORT WALTON BEACH, FL 32549-1208
PO BOX 1209, FORT WALTON BEACH, FL 32549-1209
PO BOX 1210, FORT WALTON BEACH, FL 32549-1210
PO BOX 1211, FORT WALTON BEACH, FL 32549-1211
PO BOX 1212, FORT WALTON BEACH, FL 32549-1212
PO BOX 1213, FORT WALTON BEACH, FL 32549-1213
PO BOX 1214, FORT WALTON BEACH, FL 32549-1214
PO BOX 1215, FORT WALTON BEACH, FL 32549-1215
PO BOX 1216, FORT WALTON BEACH, FL 32549-1216
PO BOX 1217, FORT WALTON BEACH, FL 32549-1217
PO BOX 1218, FORT WALTON BEACH, FL 32549-1218
PO BOX 1219, FORT WALTON BEACH, FL 32549-1219
PO BOX 1220, FORT WALTON BEACH, FL 32549-1220
PO BOX 1221, FORT WALTON BEACH, FL 32549-1221
PO BOX 1222, FORT WALTON BEACH, FL 32549-1222
PO BOX 1223, FORT WALTON BEACH, FL 32549-1223
PO BOX 1224, FORT WALTON BEACH, FL 32549-1224
PO BOX 1225, FORT WALTON BEACH, FL 32549-1225
PO BOX 1226, FORT WALTON BEACH, FL 32549-1226
PO BOX 1227, FORT WALTON BEACH, FL 32549-1227
PO BOX 1228, FORT WALTON BEACH, FL 32549-1228
PO BOX 1229, FORT WALTON BEACH, FL 32549-1229
PO BOX 1230, FORT WALTON BEACH, FL 32549-1230
PO BOX 1231, FORT WALTON BEACH, FL 32549-1231
PO BOX 1232, FORT WALTON BEACH, FL 32549-1232
PO BOX 1233, FORT WALTON BEACH, FL 32549-1233
PO BOX 1234, FORT WALTON BEACH, FL 32549-1234
PO BOX 1235, FORT WALTON BEACH, FL 32549-1235
PO BOX 1236, FORT WALTON BEACH, FL 32549-1236
PO BOX 1237, FORT WALTON BEACH, FL 32549-1237
PO BOX 1238, FORT WALTON BEACH, FL 32549-1238
PO BOX 1239, FORT WALTON BEACH, FL 32549-1239
PO BOX 1240, FORT WALTON BEACH, FL 32549-1240
PO BOX 1241, FORT WALTON BEACH, FL 32549-1241
PO BOX 1242, FORT WALTON BEACH, FL 32549-1242
PO BOX 1243, FORT WALTON BEACH, FL 32549-1243
PO BOX 1244, FORT WALTON BEACH, FL 32549-1244
PO BOX 1245, FORT WALTON BEACH, FL 32549-1245
PO BOX 1246, FORT WALTON BEACH, FL 32549-1246
PO BOX 1247, FORT WALTON BEACH, FL 32549-1247
PO BOX 1248, FORT WALTON BEACH, FL 32549-1248
PO BOX 1249, FORT WALTON BEACH, FL 32549-1249
PO BOX 1250, FORT WALTON BEACH, FL 32549-1250
PO BOX 1251, FORT WALTON BEACH, FL 32549-1251
PO BOX 1252, FORT WALTON BEACH, FL 32549-1252
PO BOX 1253, FORT WALTON BEACH, FL 32549-1253
PO BOX 1254, FORT WALTON BEACH, FL 32549-1254
PO BOX 1255, FORT WALTON BEACH, FL 32549-1255
PO BOX 1256, FORT WALTON BEACH, FL 32549-1256
PO BOX 1257, FORT WALTON BEACH, FL 32549-1257
PO BOX 1258, FORT WALTON BEACH, FL 32549-1258
PO BOX 1259, FORT WALTON BEACH, FL 32549-1259
PO BOX 1260, FORT WALTON BEACH, FL 32549-1260
PO BOX 1261, FORT WALTON BEACH, FL 32549-1261
PO BOX 1262, FORT WALTON BEACH, FL 32549-1262
PO BOX 1263, FORT WALTON BEACH, FL 32549-1263
PO BOX 1264, FORT WALTON BEACH, FL 32549-1264
PO BOX 1265, FORT WALTON BEACH, FL 32549-1265
PO BOX 1266, FORT WALTON BEACH, FL 32549-1266
PO BOX 1267, FORT WALTON BEACH, FL 32549-1267
PO BOX 1268, FORT WALTON BEACH, FL 32549-1268
PO BOX 1269, FORT WALTON BEACH, FL 32549-1269
PO BOX 1270, FORT WALTON BEACH, FL 32549-1270
PO BOX 1271, FORT WALTON BEACH, FL 32549-1271
PO BOX 1272, FORT WALTON BEACH, FL 32549-1272
PO BOX 1273, FORT WALTON BEACH, FL 32549-1273
PO BOX 1274, FORT WALTON BEACH, FL 32549-1274
PO BOX 1275, FORT WALTON BEACH, FL 32549-1275
PO BOX 1276, FORT WALTON BEACH, FL 32549-1276
PO BOX 1277, FORT WALTON BEACH, FL 32549-1277
PO BOX 1278, FORT WALTON BEACH, FL 32549-1278
PO BOX 1279, FORT WALTON BEACH, FL 32549-1279
PO BOX 1280, FORT WALTON BEACH, FL 32549-1280
PO BOX 1281, FORT WALTON BEACH, FL 32549-1281
PO BOX 1282, FORT WALTON BEACH, FL 32549-1282
PO BOX 1283, FORT WALTON BEACH, FL 32549-1283
PO BOX 1284, FORT WALTON BEACH, FL 32549-1284
PO BOX 1285, FORT WALTON BEACH, FL 32549-1285
PO BOX 1286, FORT WALTON BEACH, FL 32549-1286
PO BOX 1287, FORT WALTON BEACH, FL 32549-1287
PO BOX 1288, FORT WALTON BEACH, FL 32549-1288
PO BOX 1289, FORT WALTON BEACH, FL 32549-1289
PO BOX 1290, FORT WALTON BEACH, FL 32549-1290
PO BOX 1291, FORT WALTON BEACH, FL 32549-1291
PO BOX 1292, FORT WALTON BEACH, FL 32549-1292
PO BOX 1293, FORT WALTON BEACH, FL 32549-1293
PO BOX 1294, FORT WALTON BEACH, FL 32549-1294
PO BOX 1295, FORT WALTON BEACH, FL 32549-1295
PO BOX 1296, FORT WALTON BEACH, FL 32549-1296
PO BOX 1297, FORT WALTON BEACH, FL 32549-1297
PO BOX 1298, FORT WALTON BEACH, FL 32549-1298
PO BOX 1299, FORT WALTON BEACH, FL 32549-1299
PO BOX 1300, FORT WALTON BEACH, FL 32549-1300
PO BOX 1301, FORT WALTON BEACH, FL 32549-1301
PO BOX 1302, FORT WALTON BEACH, FL 32549-1302
PO BOX 1303, FORT WALTON BEACH, FL 32549-1303
PO BOX 1304, FORT WALTON BEACH, FL 32549-1304
PO BOX 1305, FORT WALTON BEACH, FL 32549-1305
PO BOX 1306, FORT WALTON BEACH, FL 32549-1306
PO BOX 1307, FORT WALTON BEACH, FL 32549-1307
PO BOX 1308, FORT WALTON BEACH, FL 32549-1308
PO BOX 1309, FORT WALTON BEACH, FL 32549-1309
PO BOX 1310, FORT WALTON BEACH, FL 32549-1310
PO BOX 1311, FORT WALTON BEACH, FL 32549-1311
PO BOX 1312, FORT WALTON BEACH, FL 32549-1312
PO BOX 1313, FORT WALTON BEACH, FL 32549-1313
PO BOX 1314, FORT WALTON BEACH, FL 32549-1314
PO BOX 1315, FORT WALTON BEACH, FL 32549-1315
PO BOX 1316, FORT WALTON BEACH, FL 32549-1316
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