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 1101, BROOKFIELD, WI 53008-1101
PO BOX 1102, BROOKFIELD, WI 53008-1102
PO BOX 1103, BROOKFIELD, WI 53008-1103
PO BOX 1104, BROOKFIELD, WI 53008-1104
PO BOX 1105, BROOKFIELD, WI 53008-1105
PO BOX 1106, BROOKFIELD, WI 53008-1106
PO BOX 1107, BROOKFIELD, WI 53008-1107
PO BOX 1108, BROOKFIELD, WI 53008-1108
PO BOX 1109, BROOKFIELD, WI 53008-1109
PO BOX 1110, BROOKFIELD, WI 53008-1110
PO BOX 1111, BROOKFIELD, WI 53008-1111
PO BOX 1112, BROOKFIELD, WI 53008-1112
PO BOX 1113, BROOKFIELD, WI 53008-1113
PO BOX 1114, BROOKFIELD, WI 53008-1114
PO BOX 1115, BROOKFIELD, WI 53008-1115
PO BOX 1116, BROOKFIELD, WI 53008-1116
PO BOX 1117, BROOKFIELD, WI 53008-1117
PO BOX 1118, BROOKFIELD, WI 53008-1118
PO BOX 1119, BROOKFIELD, WI 53008-1119
PO BOX 1120, BROOKFIELD, WI 53008-1120
PO BOX 1121, BROOKFIELD, WI 53008-1121
PO BOX 1122, BROOKFIELD, WI 53008-1122
PO BOX 1123, BROOKFIELD, WI 53008-1123
PO BOX 1124, BROOKFIELD, WI 53008-1124
PO BOX 1125, BROOKFIELD, WI 53008-1125
PO BOX 1126, BROOKFIELD, WI 53008-1126
PO BOX 1127, BROOKFIELD, WI 53008-1127
PO BOX 1128, BROOKFIELD, WI 53008-1128
PO BOX 1129, BROOKFIELD, WI 53008-1129
PO BOX 1130, BROOKFIELD, WI 53008-1130
PO BOX 1131, BROOKFIELD, WI 53008-1131
PO BOX 1132, BROOKFIELD, WI 53008-1132
PO BOX 1133, BROOKFIELD, WI 53008-1133
PO BOX 1134, BROOKFIELD, WI 53008-1134
PO BOX 1135, BROOKFIELD, WI 53008-1135
PO BOX 1136, BROOKFIELD, WI 53008-1136
PO BOX 1137, BROOKFIELD, WI 53008-1137
PO BOX 1138, BROOKFIELD, WI 53008-1138
PO BOX 1139, BROOKFIELD, WI 53008-1139
PO BOX 1140, BROOKFIELD, WI 53008-1140
PO BOX 1141, BROOKFIELD, WI 53008-1141
PO BOX 1142, BROOKFIELD, WI 53008-1142
PO BOX 1143, BROOKFIELD, WI 53008-1143
PO BOX 1144, BROOKFIELD, WI 53008-1144
PO BOX 1145, BROOKFIELD, WI 53008-1145
PO BOX 1146, BROOKFIELD, WI 53008-1146
PO BOX 1147, BROOKFIELD, WI 53008-1147
PO BOX 1148, BROOKFIELD, WI 53008-1148
PO BOX 1149, BROOKFIELD, WI 53008-1149
PO BOX 1150, BROOKFIELD, WI 53008-1150
PO BOX 1151, BROOKFIELD, WI 53008-1151
PO BOX 1152, BROOKFIELD, WI 53008-1152
PO BOX 1153, BROOKFIELD, WI 53008-1153
PO BOX 1154, BROOKFIELD, WI 53008-1154
PO BOX 1155, BROOKFIELD, WI 53008-1155
PO BOX 1156, BROOKFIELD, WI 53008-1156
PO BOX 1157, BROOKFIELD, WI 53008-1157
PO BOX 1158, BROOKFIELD, WI 53008-1158
PO BOX 1159, BROOKFIELD, WI 53008-1159
PO BOX 1160, BROOKFIELD, WI 53008-1160
PO BOX 1161, BROOKFIELD, WI 53008-1161
PO BOX 1162, BROOKFIELD, WI 53008-1162
PO BOX 1163, BROOKFIELD, WI 53008-1163
PO BOX 1164, BROOKFIELD, WI 53008-1164
PO BOX 1165, BROOKFIELD, WI 53008-1165
PO BOX 1166, BROOKFIELD, WI 53008-1166
PO BOX 1167, BROOKFIELD, WI 53008-1167
PO BOX 1168, BROOKFIELD, WI 53008-1168
PO BOX 1169, BROOKFIELD, WI 53008-1169
PO BOX 1170, BROOKFIELD, WI 53008-1170
PO BOX 1171, BROOKFIELD, WI 53008-1171
PO BOX 1172, BROOKFIELD, WI 53008-1172
PO BOX 1173, BROOKFIELD, WI 53008-1173
PO BOX 1174, BROOKFIELD, WI 53008-1174
PO BOX 1175, BROOKFIELD, WI 53008-1175
PO BOX 1176, BROOKFIELD, WI 53008-1176
PO BOX 1177, BROOKFIELD, WI 53008-1177
PO BOX 1178, BROOKFIELD, WI 53008-1178
PO BOX 1179, BROOKFIELD, WI 53008-1179
PO BOX 1180, BROOKFIELD, WI 53008-1180
PO BOX 1181, BROOKFIELD, WI 53008-1181
PO BOX 1182, BROOKFIELD, WI 53008-1182
PO BOX 1183, BROOKFIELD, WI 53008-1183
PO BOX 1184, BROOKFIELD, WI 53008-1184
PO BOX 1185, BROOKFIELD, WI 53008-1185
PO BOX 1186, BROOKFIELD, WI 53008-1186
PO BOX 1187, BROOKFIELD, WI 53008-1187
PO BOX 1188, BROOKFIELD, WI 53008-1188
PO BOX 1189, BROOKFIELD, WI 53008-1189
PO BOX 1190, BROOKFIELD, WI 53008-1190
PO BOX 1191, BROOKFIELD, WI 53008-1191
PO BOX 1192, BROOKFIELD, WI 53008-1192
PO BOX 1193, BROOKFIELD, WI 53008-1193
PO BOX 1194, BROOKFIELD, WI 53008-1194
PO BOX 1195, BROOKFIELD, WI 53008-1195
PO BOX 1196, BROOKFIELD, WI 53008-1196
PO BOX 1197, BROOKFIELD, WI 53008-1197
PO BOX 1198, BROOKFIELD, WI 53008-1198
PO BOX 1199, BROOKFIELD, WI 53008-1199
PO BOX 1200, BROOKFIELD, WI 53008-1200
PO BOX 1201, BROOKFIELD, WI 53008-1201
PO BOX 1202, BROOKFIELD, WI 53008-1202
PO BOX 1203, BROOKFIELD, WI 53008-1203
PO BOX 1204, BROOKFIELD, WI 53008-1204
PO BOX 1205, BROOKFIELD, WI 53008-1205
PO BOX 1206, BROOKFIELD, WI 53008-1206
PO BOX 1207, BROOKFIELD, WI 53008-1207
PO BOX 1208, BROOKFIELD, WI 53008-1208
PO BOX 1209, BROOKFIELD, WI 53008-1209
PO BOX 1210, BROOKFIELD, WI 53008-1210
PO BOX 1211, BROOKFIELD, WI 53008-1211
PO BOX 1212, BROOKFIELD, WI 53008-1212
PO BOX 1213, BROOKFIELD, WI 53008-1213
PO BOX 1214, BROOKFIELD, WI 53008-1214
PO BOX 1215, BROOKFIELD, WI 53008-1215
PO BOX 1216, BROOKFIELD, WI 53008-1216
PO BOX 1217, BROOKFIELD, WI 53008-1217
PO BOX 1218, BROOKFIELD, WI 53008-1218
PO BOX 1219, BROOKFIELD, WI 53008-1219
PO BOX 1220, BROOKFIELD, WI 53008-1220
PO BOX 1221, BROOKFIELD, WI 53008-1221
PO BOX 1222, BROOKFIELD, WI 53008-1222
PO BOX 1223, BROOKFIELD, WI 53008-1223
PO BOX 1224, BROOKFIELD, WI 53008-1224
PO BOX 1225, BROOKFIELD, WI 53008-1225
PO BOX 1226, BROOKFIELD, WI 53008-1226
PO BOX 1227, BROOKFIELD, WI 53008-1227
PO BOX 1228, BROOKFIELD, WI 53008-1228
PO BOX 1229, BROOKFIELD, WI 53008-1229
PO BOX 1230, BROOKFIELD, WI 53008-1230
PO BOX 1231, BROOKFIELD, WI 53008-1231
PO BOX 1232, BROOKFIELD, WI 53008-1232
PO BOX 1233, BROOKFIELD, WI 53008-1233
PO BOX 1234, BROOKFIELD, WI 53008-1234
PO BOX 1235, BROOKFIELD, WI 53008-1235
PO BOX 1236, BROOKFIELD, WI 53008-1236
PO BOX 1237, BROOKFIELD, WI 53008-1237
PO BOX 1238, BROOKFIELD, WI 53008-1238
PO BOX 1239, BROOKFIELD, WI 53008-1239
PO BOX 1240, BROOKFIELD, WI 53008-1240
PO BOX 1241, BROOKFIELD, WI 53008-1241
PO BOX 1242, BROOKFIELD, WI 53008-1242
PO BOX 1243, BROOKFIELD, WI 53008-1243
PO BOX 1244, BROOKFIELD, WI 53008-1244
PO BOX 1245, BROOKFIELD, WI 53008-1245
PO BOX 1246, BROOKFIELD, WI 53008-1246
PO BOX 1247, BROOKFIELD, WI 53008-1247
PO BOX 1248, BROOKFIELD, WI 53008-1248
PO BOX 1249, BROOKFIELD, WI 53008-1249
PO BOX 1250, BROOKFIELD, WI 53008-1250
PO BOX 1251, BROOKFIELD, WI 53008-1251
PO BOX 1252, BROOKFIELD, WI 53008-1252
PO BOX 1253, BROOKFIELD, WI 53008-1253
PO BOX 1254, BROOKFIELD, WI 53008-1254
PO BOX 1255, BROOKFIELD, WI 53008-1255
PO BOX 1256, BROOKFIELD, WI 53008-1256
PO BOX 1257, BROOKFIELD, WI 53008-1257
PO BOX 1258, BROOKFIELD, WI 53008-1258
PO BOX 1259, BROOKFIELD, WI 53008-1259
PO BOX 1260, BROOKFIELD, WI 53008-1260
PO BOX 1261, BROOKFIELD, WI 53008-1261
PO BOX 1262, BROOKFIELD, WI 53008-1262
PO BOX 1263, BROOKFIELD, WI 53008-1263
PO BOX 1264, BROOKFIELD, WI 53008-1264
PO BOX 1265, BROOKFIELD, WI 53008-1265
PO BOX 1266, BROOKFIELD, WI 53008-1266
PO BOX 1267, BROOKFIELD, WI 53008-1267
PO BOX 1268, BROOKFIELD, WI 53008-1268
PO BOX 1269, BROOKFIELD, WI 53008-1269
PO BOX 1270, BROOKFIELD, WI 53008-1270
PO BOX 1271, BROOKFIELD, WI 53008-1271
PO BOX 1272, BROOKFIELD, WI 53008-1272
PO BOX 1273, BROOKFIELD, WI 53008-1273
PO BOX 1274, BROOKFIELD, WI 53008-1274
PO BOX 1275, BROOKFIELD, WI 53008-1275
PO BOX 1276, BROOKFIELD, WI 53008-1276
PO BOX 1277, BROOKFIELD, WI 53008-1277
PO BOX 1278, BROOKFIELD, WI 53008-1278
PO BOX 1279, BROOKFIELD, WI 53008-1279
PO BOX 1280, BROOKFIELD, WI 53008-1280
PO BOX 1281, BROOKFIELD, WI 53008-1281
PO BOX 1282, BROOKFIELD, WI 53008-1282
PO BOX 1283, BROOKFIELD, WI 53008-1283
PO BOX 1284, BROOKFIELD, WI 53008-1284
PO BOX 1285, BROOKFIELD, WI 53008-1285
PO BOX 1286, BROOKFIELD, WI 53008-1286
PO BOX 1287, BROOKFIELD, WI 53008-1287
PO BOX 1288, BROOKFIELD, WI 53008-1288
PO BOX 1289, BROOKFIELD, WI 53008-1289
PO BOX 1290, BROOKFIELD, WI 53008-1290
PO BOX 1291, BROOKFIELD, WI 53008-1291
PO BOX 1292, BROOKFIELD, WI 53008-1292
PO BOX 1293, BROOKFIELD, WI 53008-1293
PO BOX 1294, BROOKFIELD, WI 53008-1294
PO BOX 1295, BROOKFIELD, WI 53008-1295
PO BOX 1296, BROOKFIELD, WI 53008-1296
PO BOX 1297, BROOKFIELD, WI 53008-1297
PO BOX 1298, BROOKFIELD, WI 53008-1298
PO BOX 1299, BROOKFIELD, WI 53008-1299
PO BOX 1300, BROOKFIELD, WI 53008-1300
PO BOX 1301, BROOKFIELD, WI 53008-1301
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