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 13002, LA JOLLA, CA 92039-3002
PO BOX 13003, LA JOLLA, CA 92039-3003
PO BOX 13004, LA JOLLA, CA 92039-3004
PO BOX 13005, LA JOLLA, CA 92039-3005
PO BOX 13006, LA JOLLA, CA 92039-3006
PO BOX 13007, LA JOLLA, CA 92039-3007
PO BOX 13008, LA JOLLA, CA 92039-3008
PO BOX 13009, LA JOLLA, CA 92039-3009
PO BOX 13010, LA JOLLA, CA 92039-3010
PO BOX 13011, LA JOLLA, CA 92039-3011
PO BOX 13012, LA JOLLA, CA 92039-3012
PO BOX 13013, LA JOLLA, CA 92039-3013
PO BOX 13014, LA JOLLA, CA 92039-3014
PO BOX 13015, LA JOLLA, CA 92039-3015
PO BOX 13016, LA JOLLA, CA 92039-3016
PO BOX 13017, LA JOLLA, CA 92039-3017
PO BOX 13018, LA JOLLA, CA 92039-3018
PO BOX 13019, LA JOLLA, CA 92039-3019
PO BOX 13020, LA JOLLA, CA 92039-3020
PO BOX 13021, LA JOLLA, CA 92039-3021
PO BOX 13022, LA JOLLA, CA 92039-3022
PO BOX 13023, LA JOLLA, CA 92039-3023
PO BOX 13024, LA JOLLA, CA 92039-3024
PO BOX 13025, LA JOLLA, CA 92039-3025
PO BOX 13026, LA JOLLA, CA 92039-3026
PO BOX 13027, LA JOLLA, CA 92039-3027
PO BOX 13028, LA JOLLA, CA 92039-3028
PO BOX 13029, LA JOLLA, CA 92039-3029
PO BOX 13030, LA JOLLA, CA 92039-3030
PO BOX 13031, LA JOLLA, CA 92039-3031
PO BOX 13032, LA JOLLA, CA 92039-3032
PO BOX 13033, LA JOLLA, CA 92039-3033
PO BOX 13034, LA JOLLA, CA 92039-3034
PO BOX 13035, LA JOLLA, CA 92039-3035
PO BOX 13036, LA JOLLA, CA 92039-3036
PO BOX 13037, LA JOLLA, CA 92039-3037
PO BOX 13038, LA JOLLA, CA 92039-3038
PO BOX 13039, LA JOLLA, CA 92039-3039
PO BOX 13040, LA JOLLA, CA 92039-3040
PO BOX 13041, LA JOLLA, CA 92039-3041
PO BOX 13042, LA JOLLA, CA 92039-3042
PO BOX 13043, LA JOLLA, CA 92039-3043
PO BOX 13044, LA JOLLA, CA 92039-3044
PO BOX 13045, LA JOLLA, CA 92039-3045
PO BOX 13046, LA JOLLA, CA 92039-3046
PO BOX 13047, LA JOLLA, CA 92039-3047
PO BOX 13048, LA JOLLA, CA 92039-3048
PO BOX 13049, LA JOLLA, CA 92039-3049
PO BOX 13050, LA JOLLA, CA 92039-3050
PO BOX 13051, LA JOLLA, CA 92039-3051
PO BOX 13052, LA JOLLA, CA 92039-3052
PO BOX 13053, LA JOLLA, CA 92039-3053
PO BOX 13054, LA JOLLA, CA 92039-3054
PO BOX 13055, LA JOLLA, CA 92039-3055
PO BOX 13056, LA JOLLA, CA 92039-3056
PO BOX 13057, LA JOLLA, CA 92039-3057
PO BOX 13058, LA JOLLA, CA 92039-3058
PO BOX 13059, LA JOLLA, CA 92039-3059
PO BOX 13060, LA JOLLA, CA 92039-3060
PO BOX 13061, LA JOLLA, CA 92039-3061
PO BOX 13062, LA JOLLA, CA 92039-3062
PO BOX 13063, LA JOLLA, CA 92039-3063
PO BOX 13064, LA JOLLA, CA 92039-3064
PO BOX 13065, LA JOLLA, CA 92039-3065
PO BOX 13066, LA JOLLA, CA 92039-3066
PO BOX 13067, LA JOLLA, CA 92039-3067
PO BOX 13068, LA JOLLA, CA 92039-3068
PO BOX 13069, LA JOLLA, CA 92039-3069
PO BOX 13070, LA JOLLA, CA 92039-3070
PO BOX 13071, LA JOLLA, CA 92039-3071
PO BOX 13072, LA JOLLA, CA 92039-3072
PO BOX 13073, LA JOLLA, CA 92039-3073
PO BOX 13074, LA JOLLA, CA 92039-3074
PO BOX 13075, LA JOLLA, CA 92039-3075
PO BOX 13076, LA JOLLA, CA 92039-3076
PO BOX 13077, LA JOLLA, CA 92039-3077
PO BOX 13078, LA JOLLA, CA 92039-3078
PO BOX 13079, LA JOLLA, CA 92039-3079
PO BOX 13080, LA JOLLA, CA 92039-3080
PO BOX 13081, LA JOLLA, CA 92039-3081
PO BOX 13082, LA JOLLA, CA 92039-3082
PO BOX 13083, LA JOLLA, CA 92039-3083
PO BOX 13084, LA JOLLA, CA 92039-3084
PO BOX 13085, LA JOLLA, CA 92039-3085
PO BOX 13086, LA JOLLA, CA 92039-3086
PO BOX 13087, LA JOLLA, CA 92039-3087
PO BOX 13088, LA JOLLA, CA 92039-3088
PO BOX 13089, LA JOLLA, CA 92039-3089
PO BOX 13090, LA JOLLA, CA 92039-3090
PO BOX 13091, LA JOLLA, CA 92039-3091
PO BOX 13092, LA JOLLA, CA 92039-3092
PO BOX 13093, LA JOLLA, CA 92039-3093
PO BOX 13094, LA JOLLA, CA 92039-3094
PO BOX 13095, LA JOLLA, CA 92039-3095
PO BOX 13096, LA JOLLA, CA 92039-3096
PO BOX 13097, LA JOLLA, CA 92039-3097
PO BOX 13098, LA JOLLA, CA 92039-3098
PO BOX 13099, LA JOLLA, CA 92039-3099
PO BOX 13100, LA JOLLA, CA 92039-3100
PO BOX 13101, LA JOLLA, CA 92039-3101
PO BOX 13102, LA JOLLA, CA 92039-3102
PO BOX 13103, LA JOLLA, CA 92039-3103
PO BOX 13104, LA JOLLA, CA 92039-3104
PO BOX 13105, LA JOLLA, CA 92039-3105
PO BOX 13106, LA JOLLA, CA 92039-3106
PO BOX 13107, LA JOLLA, CA 92039-3107
PO BOX 13108, LA JOLLA, CA 92039-3108
PO BOX 13109, LA JOLLA, CA 92039-3109
PO BOX 13110, LA JOLLA, CA 92039-3110
PO BOX 13111, LA JOLLA, CA 92039-3111
PO BOX 13112, LA JOLLA, CA 92039-3112
PO BOX 13113, LA JOLLA, CA 92039-3113
PO BOX 13114, LA JOLLA, CA 92039-3114
PO BOX 13115, LA JOLLA, CA 92039-3115
PO BOX 13116, LA JOLLA, CA 92039-3116
PO BOX 13117, LA JOLLA, CA 92039-3117
PO BOX 13118, LA JOLLA, CA 92039-3118
PO BOX 13119, LA JOLLA, CA 92039-3119
PO BOX 13120, LA JOLLA, CA 92039-3120
PO BOX 13121, LA JOLLA, CA 92039-3121
PO BOX 13122, LA JOLLA, CA 92039-3122
PO BOX 13123, LA JOLLA, CA 92039-3123
PO BOX 13124, LA JOLLA, CA 92039-3124
PO BOX 13125, LA JOLLA, CA 92039-3125
PO BOX 13126, LA JOLLA, CA 92039-3126
PO BOX 13127, LA JOLLA, CA 92039-3127
PO BOX 13128, LA JOLLA, CA 92039-3128
PO BOX 13129, LA JOLLA, CA 92039-3129
PO BOX 13130, LA JOLLA, CA 92039-3130
PO BOX 13131, LA JOLLA, CA 92039-3131
PO BOX 13132, LA JOLLA, CA 92039-3132
PO BOX 13133, LA JOLLA, CA 92039-3133
PO BOX 13134, LA JOLLA, CA 92039-3134
PO BOX 13135, LA JOLLA, CA 92039-3135
PO BOX 13136, LA JOLLA, CA 92039-3136
PO BOX 13137, LA JOLLA, CA 92039-3137
PO BOX 13138, LA JOLLA, CA 92039-3138
PO BOX 13139, LA JOLLA, CA 92039-3139
PO BOX 13140, LA JOLLA, CA 92039-3140
PO BOX 13141, LA JOLLA, CA 92039-3141
PO BOX 13142, LA JOLLA, CA 92039-3142
PO BOX 13143, LA JOLLA, CA 92039-3143
PO BOX 13144, LA JOLLA, CA 92039-3144
PO BOX 13145, LA JOLLA, CA 92039-3145
PO BOX 13146, LA JOLLA, CA 92039-3146
PO BOX 13147, LA JOLLA, CA 92039-3147
PO BOX 13148, LA JOLLA, CA 92039-3148
PO BOX 13149, LA JOLLA, CA 92039-3149
PO BOX 13150, LA JOLLA, CA 92039-3150
PO BOX 13151, LA JOLLA, CA 92039-3151
PO BOX 13152, LA JOLLA, CA 92039-3152
PO BOX 13153, LA JOLLA, CA 92039-3153
PO BOX 13154, LA JOLLA, CA 92039-3154
PO BOX 13155, LA JOLLA, CA 92039-3155
PO BOX 13156, LA JOLLA, CA 92039-3156
PO BOX 13157, LA JOLLA, CA 92039-3157
PO BOX 13158, LA JOLLA, CA 92039-3158
PO BOX 13159, LA JOLLA, CA 92039-3159
PO BOX 13160, LA JOLLA, CA 92039-3160
PO BOX 13161, LA JOLLA, CA 92039-3161
PO BOX 13162, LA JOLLA, CA 92039-3162
PO BOX 13163, LA JOLLA, CA 92039-3163
PO BOX 13164, LA JOLLA, CA 92039-3164
PO BOX 13165, LA JOLLA, CA 92039-3165
PO BOX 13166, LA JOLLA, CA 92039-3166
PO BOX 13167, LA JOLLA, CA 92039-3167
PO BOX 13168, LA JOLLA, CA 92039-3168
PO BOX 13169, LA JOLLA, CA 92039-3169
PO BOX 13170, LA JOLLA, CA 92039-3170
PO BOX 13171, LA JOLLA, CA 92039-3171
PO BOX 13172, LA JOLLA, CA 92039-3172
PO BOX 13173, LA JOLLA, CA 92039-3173
PO BOX 13174, LA JOLLA, CA 92039-3174
PO BOX 13175, LA JOLLA, CA 92039-3175
PO BOX 13176, LA JOLLA, CA 92039-3176
PO BOX 13177, LA JOLLA, CA 92039-3177
PO BOX 13178, LA JOLLA, CA 92039-3178
PO BOX 13179, LA JOLLA, CA 92039-3179
PO BOX 13180, LA JOLLA, CA 92039-3180
PO BOX 13181, LA JOLLA, CA 92039-3181
PO BOX 13182, LA JOLLA, CA 92039-3182
PO BOX 13183, LA JOLLA, CA 92039-3183
PO BOX 13184, LA JOLLA, CA 92039-3184
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