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 1221, ROCKDALE, TX 76567-1221
PO BOX 1222, ROCKDALE, TX 76567-1222
PO BOX 1223, ROCKDALE, TX 76567-1223
PO BOX 1224, ROCKDALE, TX 76567-1224
PO BOX 1225, ROCKDALE, TX 76567-1225
PO BOX 1226, ROCKDALE, TX 76567-1226
PO BOX 1227, ROCKDALE, TX 76567-1227
PO BOX 1228, ROCKDALE, TX 76567-1228
PO BOX 1229, ROCKDALE, TX 76567-1229
PO BOX 1230, ROCKDALE, TX 76567-1230
PO BOX 1231, ROCKDALE, TX 76567-1231
PO BOX 1232, ROCKDALE, TX 76567-1232
PO BOX 1233, ROCKDALE, TX 76567-1233
PO BOX 1234, ROCKDALE, TX 76567-1234
PO BOX 1235, ROCKDALE, TX 76567-1235
PO BOX 1236, ROCKDALE, TX 76567-1236
PO BOX 1237, ROCKDALE, TX 76567-1237
PO BOX 1238, ROCKDALE, TX 76567-1238
PO BOX 1239, ROCKDALE, TX 76567-1239
PO BOX 1240, ROCKDALE, TX 76567-1240
PO BOX 1241, ROCKDALE, TX 76567-1241
PO BOX 1242, ROCKDALE, TX 76567-1242
PO BOX 1243, ROCKDALE, TX 76567-1243
PO BOX 1244, ROCKDALE, TX 76567-1244
PO BOX 1245, ROCKDALE, TX 76567-1245
PO BOX 1246, ROCKDALE, TX 76567-1246
PO BOX 1247, ROCKDALE, TX 76567-1247
PO BOX 1248, ROCKDALE, TX 76567-1248
PO BOX 1249, ROCKDALE, TX 76567-1249
PO BOX 1250, ROCKDALE, TX 76567-1250
PO BOX 1251, ROCKDALE, TX 76567-1251
PO BOX 1252, ROCKDALE, TX 76567-1252
PO BOX 1253, ROCKDALE, TX 76567-1253
PO BOX 1254, ROCKDALE, TX 76567-1254
PO BOX 1255, ROCKDALE, TX 76567-1255
PO BOX 1256, ROCKDALE, TX 76567-1256
PO BOX 1257, ROCKDALE, TX 76567-1257
PO BOX 1258, ROCKDALE, TX 76567-1258
PO BOX 1259, ROCKDALE, TX 76567-1259
PO BOX 1260, ROCKDALE, TX 76567-1260
PO BOX 1261, ROCKDALE, TX 76567-1261
PO BOX 1262, ROCKDALE, TX 76567-1262
PO BOX 1263, ROCKDALE, TX 76567-1263
PO BOX 1264, ROCKDALE, TX 76567-1264
PO BOX 1265, ROCKDALE, TX 76567-1265
PO BOX 1266, ROCKDALE, TX 76567-1266
PO BOX 1267, ROCKDALE, TX 76567-1267
PO BOX 1268, ROCKDALE, TX 76567-1268
PO BOX 1269, ROCKDALE, TX 76567-1269
PO BOX 1270, ROCKDALE, TX 76567-1270
PO BOX 1271, ROCKDALE, TX 76567-1271
PO BOX 1272, ROCKDALE, TX 76567-1272
PO BOX 1273, ROCKDALE, TX 76567-1273
PO BOX 1274, ROCKDALE, TX 76567-1274
PO BOX 1275, ROCKDALE, TX 76567-1275
PO BOX 1276, ROCKDALE, TX 76567-1276
PO BOX 1277, ROCKDALE, TX 76567-1277
PO BOX 1278, ROCKDALE, TX 76567-1278
PO BOX 1279, ROCKDALE, TX 76567-1279
PO BOX 1280, ROCKDALE, TX 76567-1280
PO BOX 1281, ROCKDALE, TX 76567-1281
PO BOX 1282, ROCKDALE, TX 76567-1282
PO BOX 1283, ROCKDALE, TX 76567-1283
PO BOX 1284, ROCKDALE, TX 76567-1284
PO BOX 1285, ROCKDALE, TX 76567-1285
PO BOX 1286, ROCKDALE, TX 76567-1286
PO BOX 1287, ROCKDALE, TX 76567-1287
PO BOX 1288, ROCKDALE, TX 76567-1288
PO BOX 1289, ROCKDALE, TX 76567-1289
PO BOX 1290, ROCKDALE, TX 76567-1290
PO BOX 1291, ROCKDALE, TX 76567-1291
PO BOX 1292, ROCKDALE, TX 76567-1292
PO BOX 1293, ROCKDALE, TX 76567-1293
PO BOX 1294, ROCKDALE, TX 76567-1294
PO BOX 1295, ROCKDALE, TX 76567-1295
PO BOX 1296, ROCKDALE, TX 76567-1296
PO BOX 1297, ROCKDALE, TX 76567-1297
PO BOX 1298, ROCKDALE, TX 76567-1298
PO BOX 1299, ROCKDALE, TX 76567-1299
PO BOX 1300, ROCKDALE, TX 76567-1300
PO BOX 1301, ROCKDALE, TX 76567-1301
PO BOX 1302, ROCKDALE, TX 76567-1302
PO BOX 1303, ROCKDALE, TX 76567-1303
PO BOX 1304, ROCKDALE, TX 76567-1304
PO BOX 1305, ROCKDALE, TX 76567-1305
PO BOX 1306, ROCKDALE, TX 76567-1306
PO BOX 1307, ROCKDALE, TX 76567-1307
PO BOX 1308, ROCKDALE, TX 76567-1308
PO BOX 1309, ROCKDALE, TX 76567-1309
PO BOX 1310, ROCKDALE, TX 76567-1310
PO BOX 1311, ROCKDALE, TX 76567-1311
PO BOX 1312, ROCKDALE, TX 76567-1312
PO BOX 1313, ROCKDALE, TX 76567-1313
PO BOX 1314, ROCKDALE, TX 76567-1314
PO BOX 1315, ROCKDALE, TX 76567-1315
PO BOX 1316, ROCKDALE, TX 76567-1316
PO BOX 1317, ROCKDALE, TX 76567-1317
PO BOX 1318, ROCKDALE, TX 76567-1318
PO BOX 1319, ROCKDALE, TX 76567-1319
PO BOX 1320, ROCKDALE, TX 76567-1320
PO BOX 1321, ROCKDALE, TX 76567-1321
PO BOX 1322, ROCKDALE, TX 76567-1322
PO BOX 1323, ROCKDALE, TX 76567-1323
PO BOX 1324, ROCKDALE, TX 76567-1324
PO BOX 1325, ROCKDALE, TX 76567-1325
PO BOX 1326, ROCKDALE, TX 76567-1326
PO BOX 1327, ROCKDALE, TX 76567-1327
PO BOX 1328, ROCKDALE, TX 76567-1328
PO BOX 1329, ROCKDALE, TX 76567-1329
PO BOX 1330, ROCKDALE, TX 76567-1330
PO BOX 1331, ROCKDALE, TX 76567-1331
PO BOX 1332, ROCKDALE, TX 76567-1332
PO BOX 1333, ROCKDALE, TX 76567-1333
PO BOX 1334, ROCKDALE, TX 76567-1334
PO BOX 1335, ROCKDALE, TX 76567-1335
PO BOX 1336, ROCKDALE, TX 76567-1336
PO BOX 1337, ROCKDALE, TX 76567-1337
PO BOX 1338, ROCKDALE, TX 76567-1338
PO BOX 1339, ROCKDALE, TX 76567-1339
PO BOX 1340, ROCKDALE, TX 76567-1340
PO BOX 1341, ROCKDALE, TX 76567-1341
PO BOX 1342, ROCKDALE, TX 76567-1342
PO BOX 1343, ROCKDALE, TX 76567-1343
PO BOX 1344, ROCKDALE, TX 76567-1344
PO BOX 1345, ROCKDALE, TX 76567-1345
PO BOX 1346, ROCKDALE, TX 76567-1346
PO BOX 1347, ROCKDALE, TX 76567-1347
PO BOX 1348, ROCKDALE, TX 76567-1348
PO BOX 1349, ROCKDALE, TX 76567-1349
PO BOX 1350, ROCKDALE, TX 76567-1350
PO BOX 1351, ROCKDALE, TX 76567-1351
PO BOX 1352, ROCKDALE, TX 76567-1352
PO BOX 1353, ROCKDALE, TX 76567-1353
PO BOX 1354, ROCKDALE, TX 76567-1354
PO BOX 1355, ROCKDALE, TX 76567-1355
PO BOX 1356, ROCKDALE, TX 76567-1356
PO BOX 1357, ROCKDALE, TX 76567-1357
PO BOX 1358, ROCKDALE, TX 76567-1358
PO BOX 1359, ROCKDALE, TX 76567-1359
PO BOX 1360, ROCKDALE, TX 76567-1360
PO BOX 1361, ROCKDALE, TX 76567-1361
PO BOX 1362, ROCKDALE, TX 76567-1362
PO BOX 1363, ROCKDALE, TX 76567-1363
PO BOX 1364, ROCKDALE, TX 76567-1364
PO BOX 1365, ROCKDALE, TX 76567-1365
PO BOX 1366, ROCKDALE, TX 76567-1366
PO BOX 1367, ROCKDALE, TX 76567-1367
PO BOX 1368, ROCKDALE, TX 76567-1368
PO BOX 1369, ROCKDALE, TX 76567-1369
PO BOX 1370, ROCKDALE, TX 76567-1370
PO BOX 1371, ROCKDALE, TX 76567-1371
PO BOX 1372, ROCKDALE, TX 76567-1372
PO BOX 1373, ROCKDALE, TX 76567-1373
PO BOX 1374, ROCKDALE, TX 76567-1374
PO BOX 1375, ROCKDALE, TX 76567-1375
PO BOX 1376, ROCKDALE, TX 76567-1376
PO BOX 1377, ROCKDALE, TX 76567-1377
PO BOX 1378, ROCKDALE, TX 76567-1378
PO BOX 1379, ROCKDALE, TX 76567-1379
PO BOX 1380, ROCKDALE, TX 76567-1380
PO BOX 1381, ROCKDALE, TX 76567-1381
PO BOX 1382, ROCKDALE, TX 76567-1382
PO BOX 1383, ROCKDALE, TX 76567-1383
PO BOX 1384, ROCKDALE, TX 76567-1384
PO BOX 1385, ROCKDALE, TX 76567-1385
PO BOX 1386, ROCKDALE, TX 76567-1386
PO BOX 1387, ROCKDALE, TX 76567-1387
PO BOX 1388, ROCKDALE, TX 76567-1388
PO BOX 1389, ROCKDALE, TX 76567-1389
PO BOX 1390, ROCKDALE, TX 76567-1390
PO BOX 1391, ROCKDALE, TX 76567-1391
PO BOX 1392, ROCKDALE, TX 76567-1392
PO BOX 1393, ROCKDALE, TX 76567-1393
PO BOX 1394, ROCKDALE, TX 76567-1394
PO BOX 1395, ROCKDALE, TX 76567-1395
PO BOX 1396, ROCKDALE, TX 76567-1396
PO BOX 1397, ROCKDALE, TX 76567-1397
PO BOX 1398, ROCKDALE, TX 76567-1398
PO BOX 1399, ROCKDALE, TX 76567-1399
PO BOX 1400, ROCKDALE, TX 76567-1400
PO BOX 1401, ROCKDALE, TX 76567-1401
PO BOX 1402, ROCKDALE, TX 76567-1402
PO BOX 1403, ROCKDALE, TX 76567-1403
PO BOX 1404, ROCKDALE, TX 76567-1404
PO BOX 1405, ROCKDALE, TX 76567-1405
PO BOX 1406, ROCKDALE, TX 76567-1406
PO BOX 1407, ROCKDALE, TX 76567-1407
PO BOX 1408, ROCKDALE, TX 76567-1408
PO BOX 1409, ROCKDALE, TX 76567-1409
PO BOX 1410, ROCKDALE, TX 76567-1410
PO BOX 1411, ROCKDALE, TX 76567-1411
PO BOX 1412, ROCKDALE, TX 76567-1412
PO BOX 1413, ROCKDALE, TX 76567-1413
PO BOX 1414, ROCKDALE, TX 76567-1414
PO BOX 1415, ROCKDALE, TX 76567-1415
PO BOX 1416, ROCKDALE, TX 76567-1416
PO BOX 1417, ROCKDALE, TX 76567-1417
PO BOX 1418, ROCKDALE, TX 76567-1418
PO BOX 1419, ROCKDALE, TX 76567-1419
PO BOX 1420, ROCKDALE, TX 76567-1420
PO BOX 1421, ROCKDALE, TX 76567-1421
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