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 1141, HIGHLAND LAKES, NJ 07422-4141
PO BOX 1142, HIGHLAND LAKES, NJ 07422-4142
PO BOX 1143, HIGHLAND LAKES, NJ 07422-4143
PO BOX 1144, HIGHLAND LAKES, NJ 07422-4144
PO BOX 1145, HIGHLAND LAKES, NJ 07422-4145
PO BOX 1146, HIGHLAND LAKES, NJ 07422-4146
PO BOX 1147, HIGHLAND LAKES, NJ 07422-4147
PO BOX 1148, HIGHLAND LAKES, NJ 07422-4148
PO BOX 1149, HIGHLAND LAKES, NJ 07422-4149
PO BOX 1150, HIGHLAND LAKES, NJ 07422-4150
PO BOX 1151, HIGHLAND LAKES, NJ 07422-4151
PO BOX 1152, HIGHLAND LAKES, NJ 07422-4152
PO BOX 1153, HIGHLAND LAKES, NJ 07422-4153
PO BOX 1154, HIGHLAND LAKES, NJ 07422-4154
PO BOX 1155, HIGHLAND LAKES, NJ 07422-4155
PO BOX 1156, HIGHLAND LAKES, NJ 07422-4156
PO BOX 1157, HIGHLAND LAKES, NJ 07422-4157
PO BOX 1158, HIGHLAND LAKES, NJ 07422-4158
PO BOX 1159, HIGHLAND LAKES, NJ 07422-4159
PO BOX 1160, HIGHLAND LAKES, NJ 07422-4160
PO BOX 1161, HIGHLAND LAKES, NJ 07422-4161
PO BOX 1162, HIGHLAND LAKES, NJ 07422-4162
PO BOX 1163, HIGHLAND LAKES, NJ 07422-4163
PO BOX 1164, HIGHLAND LAKES, NJ 07422-4164
PO BOX 1165, HIGHLAND LAKES, NJ 07422-4165
PO BOX 1166, HIGHLAND LAKES, NJ 07422-4166
PO BOX 1167, HIGHLAND LAKES, NJ 07422-4167
PO BOX 1168, HIGHLAND LAKES, NJ 07422-4168
PO BOX 1169, HIGHLAND LAKES, NJ 07422-4169
PO BOX 1170, HIGHLAND LAKES, NJ 07422-4170
PO BOX 1171, HIGHLAND LAKES, NJ 07422-4171
PO BOX 1172, HIGHLAND LAKES, NJ 07422-4172
PO BOX 1173, HIGHLAND LAKES, NJ 07422-4173
PO BOX 1174, HIGHLAND LAKES, NJ 07422-4174
PO BOX 1175, HIGHLAND LAKES, NJ 07422-4175
PO BOX 1176, HIGHLAND LAKES, NJ 07422-4176
PO BOX 1177, HIGHLAND LAKES, NJ 07422-4177
PO BOX 1178, HIGHLAND LAKES, NJ 07422-4178
PO BOX 1179, HIGHLAND LAKES, NJ 07422-4179
PO BOX 1180, HIGHLAND LAKES, NJ 07422-4180
PO BOX 1181, HIGHLAND LAKES, NJ 07422-4181
PO BOX 1182, HIGHLAND LAKES, NJ 07422-4182
PO BOX 1183, HIGHLAND LAKES, NJ 07422-4183
PO BOX 1184, HIGHLAND LAKES, NJ 07422-4184
PO BOX 1185, HIGHLAND LAKES, NJ 07422-4185
PO BOX 1186, HIGHLAND LAKES, NJ 07422-4186
PO BOX 1187, HIGHLAND LAKES, NJ 07422-4187
PO BOX 1188, HIGHLAND LAKES, NJ 07422-4188
PO BOX 1189, HIGHLAND LAKES, NJ 07422-4189
PO BOX 1190, HIGHLAND LAKES, NJ 07422-4190
PO BOX 1191, HIGHLAND LAKES, NJ 07422-4191
PO BOX 1192, HIGHLAND LAKES, NJ 07422-4192
PO BOX 1193, HIGHLAND LAKES, NJ 07422-4193
PO BOX 1194, HIGHLAND LAKES, NJ 07422-4194
PO BOX 1195, HIGHLAND LAKES, NJ 07422-4195
PO BOX 1196, HIGHLAND LAKES, NJ 07422-4196
PO BOX 1197, HIGHLAND LAKES, NJ 07422-4197
PO BOX 1198, HIGHLAND LAKES, NJ 07422-4198
PO BOX 1199, HIGHLAND LAKES, NJ 07422-4199
PO BOX 1200, HIGHLAND LAKES, NJ 07422-4200
PO BOX 1201, HIGHLAND LAKES, NJ 07422-4201
PO BOX 1202, HIGHLAND LAKES, NJ 07422-4202
PO BOX 1203, HIGHLAND LAKES, NJ 07422-4203
PO BOX 1204, HIGHLAND LAKES, NJ 07422-4204
PO BOX 1205, HIGHLAND LAKES, NJ 07422-4205
PO BOX 1206, HIGHLAND LAKES, NJ 07422-4206
PO BOX 1207, HIGHLAND LAKES, NJ 07422-4207
PO BOX 1208, HIGHLAND LAKES, NJ 07422-4208
PO BOX 1209, HIGHLAND LAKES, NJ 07422-4209
PO BOX 1210, HIGHLAND LAKES, NJ 07422-4210
PO BOX 1211, HIGHLAND LAKES, NJ 07422-4211
PO BOX 1212, HIGHLAND LAKES, NJ 07422-4212
PO BOX 1213, HIGHLAND LAKES, NJ 07422-4213
PO BOX 1214, HIGHLAND LAKES, NJ 07422-4214
PO BOX 1215, HIGHLAND LAKES, NJ 07422-4215
PO BOX 1216, HIGHLAND LAKES, NJ 07422-4216
PO BOX 1217, HIGHLAND LAKES, NJ 07422-4217
PO BOX 1218, HIGHLAND LAKES, NJ 07422-4218
PO BOX 1219, HIGHLAND LAKES, NJ 07422-4219
PO BOX 1220, HIGHLAND LAKES, NJ 07422-4220
PO BOX 1221, HIGHLAND LAKES, NJ 07422-4221
PO BOX 1222, HIGHLAND LAKES, NJ 07422-4222
PO BOX 1223, HIGHLAND LAKES, NJ 07422-4223
PO BOX 1224, HIGHLAND LAKES, NJ 07422-4224
PO BOX 1225, HIGHLAND LAKES, NJ 07422-4225
PO BOX 1226, HIGHLAND LAKES, NJ 07422-4226
PO BOX 1227, HIGHLAND LAKES, NJ 07422-4227
PO BOX 1228, HIGHLAND LAKES, NJ 07422-4228
PO BOX 1229, HIGHLAND LAKES, NJ 07422-4229
PO BOX 1230, HIGHLAND LAKES, NJ 07422-4230
PO BOX 1231, HIGHLAND LAKES, NJ 07422-4231
PO BOX 1232, HIGHLAND LAKES, NJ 07422-4232
PO BOX 1233, HIGHLAND LAKES, NJ 07422-4233
PO BOX 1234, HIGHLAND LAKES, NJ 07422-4234
PO BOX 1235, HIGHLAND LAKES, NJ 07422-4235
PO BOX 1236, HIGHLAND LAKES, NJ 07422-4236
PO BOX 1237, HIGHLAND LAKES, NJ 07422-4237
PO BOX 1238, HIGHLAND LAKES, NJ 07422-4238
PO BOX 1239, HIGHLAND LAKES, NJ 07422-4239
PO BOX 1240, HIGHLAND LAKES, NJ 07422-4240
PO BOX 1241, HIGHLAND LAKES, NJ 07422-4241
PO BOX 1242, HIGHLAND LAKES, NJ 07422-4242
PO BOX 1243, HIGHLAND LAKES, NJ 07422-4243
PO BOX 1244, HIGHLAND LAKES, NJ 07422-4244
PO BOX 1245, HIGHLAND LAKES, NJ 07422-4245
PO BOX 1246, HIGHLAND LAKES, NJ 07422-4246
PO BOX 1247, HIGHLAND LAKES, NJ 07422-4247
PO BOX 1248, HIGHLAND LAKES, NJ 07422-4248
PO BOX 1249, HIGHLAND LAKES, NJ 07422-4249
PO BOX 1250, HIGHLAND LAKES, NJ 07422-4250
PO BOX 1251, HIGHLAND LAKES, NJ 07422-4251
PO BOX 1252, HIGHLAND LAKES, NJ 07422-4252
PO BOX 1253, HIGHLAND LAKES, NJ 07422-4253
PO BOX 1254, HIGHLAND LAKES, NJ 07422-4254
PO BOX 1255, HIGHLAND LAKES, NJ 07422-4255
PO BOX 1256, HIGHLAND LAKES, NJ 07422-4256
PO BOX 1257, HIGHLAND LAKES, NJ 07422-4257
PO BOX 1258, HIGHLAND LAKES, NJ 07422-4258
PO BOX 1259, HIGHLAND LAKES, NJ 07422-4259
PO BOX 1260, HIGHLAND LAKES, NJ 07422-4260
PO BOX 1261, HIGHLAND LAKES, NJ 07422-4261
PO BOX 1262, HIGHLAND LAKES, NJ 07422-4262
PO BOX 1263, HIGHLAND LAKES, NJ 07422-4263
PO BOX 1264, HIGHLAND LAKES, NJ 07422-4264
PO BOX 1265, HIGHLAND LAKES, NJ 07422-4265
PO BOX 1266, HIGHLAND LAKES, NJ 07422-4266
PO BOX 1267, HIGHLAND LAKES, NJ 07422-4267
PO BOX 1268, HIGHLAND LAKES, NJ 07422-4268
PO BOX 1269, HIGHLAND LAKES, NJ 07422-4269
PO BOX 1270, HIGHLAND LAKES, NJ 07422-4270
PO BOX 1271, HIGHLAND LAKES, NJ 07422-4271
PO BOX 1272, HIGHLAND LAKES, NJ 07422-4272
PO BOX 1273, HIGHLAND LAKES, NJ 07422-4273
PO BOX 1274, HIGHLAND LAKES, NJ 07422-4274
PO BOX 1275, HIGHLAND LAKES, NJ 07422-4275
PO BOX 1276, HIGHLAND LAKES, NJ 07422-4276
PO BOX 1277, HIGHLAND LAKES, NJ 07422-4277
PO BOX 1278, HIGHLAND LAKES, NJ 07422-4278
PO BOX 1279, HIGHLAND LAKES, NJ 07422-4279
PO BOX 1280, HIGHLAND LAKES, NJ 07422-4280
PO BOX 1281, HIGHLAND LAKES, NJ 07422-4281
PO BOX 1282, HIGHLAND LAKES, NJ 07422-4282
PO BOX 1283, HIGHLAND LAKES, NJ 07422-4283
PO BOX 1284, HIGHLAND LAKES, NJ 07422-4284
PO BOX 1285, HIGHLAND LAKES, NJ 07422-4285
PO BOX 1286, HIGHLAND LAKES, NJ 07422-4286
PO BOX 1287, HIGHLAND LAKES, NJ 07422-4287
PO BOX 1288, HIGHLAND LAKES, NJ 07422-4288
PO BOX 1289, HIGHLAND LAKES, NJ 07422-4289
PO BOX 1290, HIGHLAND LAKES, NJ 07422-4290
PO BOX 1291, HIGHLAND LAKES, NJ 07422-4291
PO BOX 1292, HIGHLAND LAKES, NJ 07422-4292
PO BOX 1293, HIGHLAND LAKES, NJ 07422-4293
PO BOX 1294, HIGHLAND LAKES, NJ 07422-4294
PO BOX 1295, HIGHLAND LAKES, NJ 07422-4295
PO BOX 1296, HIGHLAND LAKES, NJ 07422-4296
PO BOX 1297, HIGHLAND LAKES, NJ 07422-4297
PO BOX 1298, HIGHLAND LAKES, NJ 07422-4298
PO BOX 1299, HIGHLAND LAKES, NJ 07422-4299
PO BOX 1300, HIGHLAND LAKES, NJ 07422-4300
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