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 98001, LOUISVILLE, KY 40298-8001
PO BOX 98002, LOUISVILLE, KY 40298-8002
PO BOX 98003, LOUISVILLE, KY 40298-8003
PO BOX 98004, LOUISVILLE, KY 40298-8004
PO BOX 98005, LOUISVILLE, KY 40298-8005
PO BOX 98006, LOUISVILLE, KY 40298-8006
PO BOX 98007, LOUISVILLE, KY 40298-8007
PO BOX 98008, LOUISVILLE, KY 40298-8008
PO BOX 98009, LOUISVILLE, KY 40298-8009
PO BOX 98010, LOUISVILLE, KY 40298-8010
PO BOX 98011, LOUISVILLE, KY 40298-8011
PO BOX 98012, LOUISVILLE, KY 40298-8012
PO BOX 98013, LOUISVILLE, KY 40298-8013
PO BOX 98014, LOUISVILLE, KY 40298-8014
PO BOX 98015, LOUISVILLE, KY 40298-8015
PO BOX 98016, LOUISVILLE, KY 40298-8016
PO BOX 98017, LOUISVILLE, KY 40298-8017
PO BOX 98018, LOUISVILLE, KY 40298-8018
PO BOX 98019, LOUISVILLE, KY 40298-8019
PO BOX 98020, LOUISVILLE, KY 40298-8020
PO BOX 98021, LOUISVILLE, KY 40298-8021
PO BOX 98022, LOUISVILLE, KY 40298-8022
PO BOX 98023, LOUISVILLE, KY 40298-8023
PO BOX 98024, LOUISVILLE, KY 40298-8024
PO BOX 98025, LOUISVILLE, KY 40298-8025
PO BOX 98026, LOUISVILLE, KY 40298-8026
PO BOX 98027, LOUISVILLE, KY 40298-8027
PO BOX 98028, LOUISVILLE, KY 40298-8028
PO BOX 98029, LOUISVILLE, KY 40298-8029
PO BOX 98030, LOUISVILLE, KY 40298-8030
PO BOX 98031, LOUISVILLE, KY 40298-8031
PO BOX 98032, LOUISVILLE, KY 40298-8032
PO BOX 98033, LOUISVILLE, KY 40298-8033
PO BOX 98034, LOUISVILLE, KY 40298-8034
PO BOX 98035, LOUISVILLE, KY 40298-8035
PO BOX 98036, LOUISVILLE, KY 40298-8036
PO BOX 98037, LOUISVILLE, KY 40298-8037
PO BOX 98038, LOUISVILLE, KY 40298-8038
PO BOX 98039, LOUISVILLE, KY 40298-8039
PO BOX 98040, LOUISVILLE, KY 40298-8040
PO BOX 98041, LOUISVILLE, KY 40298-8041
PO BOX 98042, LOUISVILLE, KY 40298-8042
PO BOX 98043, LOUISVILLE, KY 40298-8043
PO BOX 98044, LOUISVILLE, KY 40298-8044
PO BOX 98045, LOUISVILLE, KY 40298-8045
PO BOX 98046, LOUISVILLE, KY 40298-8046
PO BOX 98047, LOUISVILLE, KY 40298-8047
PO BOX 98048, LOUISVILLE, KY 40298-8048
PO BOX 98049, LOUISVILLE, KY 40298-8049
PO BOX 98050, LOUISVILLE, KY 40298-8050
PO BOX 98051, LOUISVILLE, KY 40298-8051
PO BOX 98052, LOUISVILLE, KY 40298-8052
PO BOX 98053, LOUISVILLE, KY 40298-8053
PO BOX 98054, LOUISVILLE, KY 40298-8054
PO BOX 98055, LOUISVILLE, KY 40298-8055
PO BOX 98056, LOUISVILLE, KY 40298-8056
PO BOX 98057, LOUISVILLE, KY 40298-8057
PO BOX 98058, LOUISVILLE, KY 40298-8058
PO BOX 98059, LOUISVILLE, KY 40298-8059
PO BOX 98060, LOUISVILLE, KY 40298-8060
PO BOX 98061, LOUISVILLE, KY 40298-8061
PO BOX 98062, LOUISVILLE, KY 40298-8062
PO BOX 98063, LOUISVILLE, KY 40298-8063
PO BOX 98064, LOUISVILLE, KY 40298-8064
PO BOX 98065, LOUISVILLE, KY 40298-8065
PO BOX 98066, LOUISVILLE, KY 40298-8066
PO BOX 98067, LOUISVILLE, KY 40298-8067
PO BOX 98068, LOUISVILLE, KY 40298-8068
PO BOX 98069, LOUISVILLE, KY 40298-8069
PO BOX 98070, LOUISVILLE, KY 40298-8070
PO BOX 98071, LOUISVILLE, KY 40298-8071
PO BOX 98072, LOUISVILLE, KY 40298-8072
PO BOX 98073, LOUISVILLE, KY 40298-8073
PO BOX 98074, LOUISVILLE, KY 40298-8074
PO BOX 98075, LOUISVILLE, KY 40298-8075
PO BOX 98076, LOUISVILLE, KY 40298-8076
PO BOX 98077, LOUISVILLE, KY 40298-8077
PO BOX 98078, LOUISVILLE, KY 40298-8078
PO BOX 98079, LOUISVILLE, KY 40298-8079
PO BOX 98080, LOUISVILLE, KY 40298-8080
PO BOX 98081, LOUISVILLE, KY 40298-8081
PO BOX 98082, LOUISVILLE, KY 40298-8082
PO BOX 98083, LOUISVILLE, KY 40298-8083
PO BOX 98084, LOUISVILLE, KY 40298-8084
PO BOX 98085, LOUISVILLE, KY 40298-8085
PO BOX 98086, LOUISVILLE, KY 40298-8086
PO BOX 98087, LOUISVILLE, KY 40298-8087
PO BOX 98088, LOUISVILLE, KY 40298-8088
PO BOX 98089, LOUISVILLE, KY 40298-8089
PO BOX 98090, LOUISVILLE, KY 40298-8090
PO BOX 98091, LOUISVILLE, KY 40298-8091
PO BOX 98092, LOUISVILLE, KY 40298-8092
PO BOX 98093, LOUISVILLE, KY 40298-8093
PO BOX 98094, LOUISVILLE, KY 40298-8094
PO BOX 98095, LOUISVILLE, KY 40298-8095
PO BOX 98096, LOUISVILLE, KY 40298-8096
PO BOX 98097, LOUISVILLE, KY 40298-8097
PO BOX 98098, LOUISVILLE, KY 40298-8098
PO BOX 98099, LOUISVILLE, KY 40298-8099
PO BOX 98100, LOUISVILLE, KY 40298-8100
PO BOX 98101, LOUISVILLE, KY 40298-8101
PO BOX 98102, LOUISVILLE, KY 40298-8102
PO BOX 98103, LOUISVILLE, KY 40298-8103
PO BOX 98104, LOUISVILLE, KY 40298-8104
PO BOX 98105, LOUISVILLE, KY 40298-8105
PO BOX 98106, LOUISVILLE, KY 40298-8106
PO BOX 98107, LOUISVILLE, KY 40298-8107
PO BOX 98108, LOUISVILLE, KY 40298-8108
PO BOX 98109, LOUISVILLE, KY 40298-8109
PO BOX 98110, LOUISVILLE, KY 40298-8110
PO BOX 98111, LOUISVILLE, KY 40298-8111
PO BOX 98112, LOUISVILLE, KY 40298-8112
PO BOX 98113, LOUISVILLE, KY 40298-8113
PO BOX 98114, LOUISVILLE, KY 40298-8114
PO BOX 98115, LOUISVILLE, KY 40298-8115
PO BOX 98116, LOUISVILLE, KY 40298-8116
PO BOX 98117, LOUISVILLE, KY 40298-8117
PO BOX 98118, LOUISVILLE, KY 40298-8118
PO BOX 98119, LOUISVILLE, KY 40298-8119
PO BOX 98120, LOUISVILLE, KY 40298-8120
PO BOX 98121, LOUISVILLE, KY 40298-8121
PO BOX 98122, LOUISVILLE, KY 40298-8122
PO BOX 98123, LOUISVILLE, KY 40298-8123
PO BOX 98124, LOUISVILLE, KY 40298-8124
PO BOX 98125, LOUISVILLE, KY 40298-8125
PO BOX 98126, LOUISVILLE, KY 40298-8126
PO BOX 98127, LOUISVILLE, KY 40298-8127
PO BOX 98128, LOUISVILLE, KY 40298-8128
PO BOX 98129, LOUISVILLE, KY 40298-8129
PO BOX 98130, LOUISVILLE, KY 40298-8130
PO BOX 98131, LOUISVILLE, KY 40298-8131
PO BOX 98132, LOUISVILLE, KY 40298-8132
PO BOX 98133, LOUISVILLE, KY 40298-8133
PO BOX 98134, LOUISVILLE, KY 40298-8134
PO BOX 98135, LOUISVILLE, KY 40298-8135
PO BOX 98136, LOUISVILLE, KY 40298-8136
PO BOX 98137, LOUISVILLE, KY 40298-8137
PO BOX 98138, LOUISVILLE, KY 40298-8138
PO BOX 98139, LOUISVILLE, KY 40298-8139
PO BOX 98140, LOUISVILLE, KY 40298-8140
PO BOX 98141, LOUISVILLE, KY 40298-8141
PO BOX 98142, LOUISVILLE, KY 40298-8142
PO BOX 98143, LOUISVILLE, KY 40298-8143
PO BOX 98144, LOUISVILLE, KY 40298-8144
PO BOX 98145, LOUISVILLE, KY 40298-8145
PO BOX 98146, LOUISVILLE, KY 40298-8146
PO BOX 98147, LOUISVILLE, KY 40298-8147
PO BOX 98148, LOUISVILLE, KY 40298-8148
PO BOX 98149, LOUISVILLE, KY 40298-8149
PO BOX 98150, LOUISVILLE, KY 40298-8150
PO BOX 98151, LOUISVILLE, KY 40298-8151
PO BOX 98152, LOUISVILLE, KY 40298-8152
PO BOX 98153, LOUISVILLE, KY 40298-8153
PO BOX 98154, LOUISVILLE, KY 40298-8154
PO BOX 98155, LOUISVILLE, KY 40298-8155
PO BOX 98156, LOUISVILLE, KY 40298-8156
PO BOX 98157, LOUISVILLE, KY 40298-8157
PO BOX 98158, LOUISVILLE, KY 40298-8158
PO BOX 98159, LOUISVILLE, KY 40298-8159
PO BOX 98160, LOUISVILLE, KY 40298-8160
PO BOX 98161, LOUISVILLE, KY 40298-8161
PO BOX 98162, LOUISVILLE, KY 40298-8162
PO BOX 98163, LOUISVILLE, KY 40298-8163
PO BOX 98164, LOUISVILLE, KY 40298-8164
PO BOX 98165, LOUISVILLE, KY 40298-8165
PO BOX 98166, LOUISVILLE, KY 40298-8166
PO BOX 98167, LOUISVILLE, KY 40298-8167
PO BOX 98168, LOUISVILLE, KY 40298-8168
PO BOX 98169, LOUISVILLE, KY 40298-8169
PO BOX 98170, LOUISVILLE, KY 40298-8170
PO BOX 98171, LOUISVILLE, KY 40298-8171
PO BOX 98172, LOUISVILLE, KY 40298-8172
PO BOX 98173, LOUISVILLE, KY 40298-8173
PO BOX 98174, LOUISVILLE, KY 40298-8174
PO BOX 98175, LOUISVILLE, KY 40298-8175
PO BOX 98176, LOUISVILLE, KY 40298-8176
PO BOX 98177, LOUISVILLE, KY 40298-8177
PO BOX 98178, LOUISVILLE, KY 40298-8178
PO BOX 98179, LOUISVILLE, KY 40298-8179
PO BOX 98180, LOUISVILLE, KY 40298-8180
PO BOX 98181, LOUISVILLE, KY 40298-8181
PO BOX 98182, LOUISVILLE, KY 40298-8182
PO BOX 98183, LOUISVILLE, KY 40298-8183
PO BOX 98184, LOUISVILLE, KY 40298-8184
PO BOX 98185, LOUISVILLE, KY 40298-8185
PO BOX 98186, LOUISVILLE, KY 40298-8186
PO BOX 98187, LOUISVILLE, KY 40298-8187
PO BOX 98188, LOUISVILLE, KY 40298-8188
PO BOX 98189, LOUISVILLE, KY 40298-8189
PO BOX 98190, LOUISVILLE, KY 40298-8190
PO BOX 98191, LOUISVILLE, KY 40298-8191
PO BOX 98192, LOUISVILLE, KY 40298-8192
PO BOX 98193, LOUISVILLE, KY 40298-8193
PO BOX 98194, LOUISVILLE, KY 40298-8194
PO BOX 98195, LOUISVILLE, KY 40298-8195
PO BOX 98196, LOUISVILLE, KY 40298-8196
PO BOX 98197, LOUISVILLE, KY 40298-8197
PO BOX 98198, LOUISVILLE, KY 40298-8198
PO BOX 98199, LOUISVILLE, KY 40298-8199
PO BOX 98200, LOUISVILLE, KY 40298-8200
PO BOX 98201, LOUISVILLE, KY 40298-8201
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