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 2981, MERCED, CA 95344-0981
PO BOX 2982, MERCED, CA 95344-0982
PO BOX 2983, MERCED, CA 95344-0983
PO BOX 2984, MERCED, CA 95344-0984
PO BOX 2985, MERCED, CA 95344-0985
PO BOX 2986, MERCED, CA 95344-0986
PO BOX 2987, MERCED, CA 95344-0987
PO BOX 2988, MERCED, CA 95344-0988
PO BOX 2989, MERCED, CA 95344-0989
PO BOX 2990, MERCED, CA 95344-0990
PO BOX 2991, MERCED, CA 95344-0991
PO BOX 2992, MERCED, CA 95344-0992
PO BOX 2993, MERCED, CA 95344-0993
PO BOX 2994, MERCED, CA 95344-0994
PO BOX 2995, MERCED, CA 95344-0995
PO BOX 2996, MERCED, CA 95344-0996
PO BOX 2997, MERCED, CA 95344-0997
PO BOX 2998, MERCED, CA 95344-0998
PO BOX 2999, MERCED, CA 95344-0999
PO BOX 3000, MERCED, CA 95344-1000
PO BOX 3001, MERCED, CA 95344-1001
PO BOX 3002, MERCED, CA 95344-1002
PO BOX 3003, MERCED, CA 95344-1003
PO BOX 3004, MERCED, CA 95344-1004
PO BOX 3005, MERCED, CA 95344-1005
PO BOX 3006, MERCED, CA 95344-1006
PO BOX 3007, MERCED, CA 95344-1007
PO BOX 3008, MERCED, CA 95344-1008
PO BOX 3009, MERCED, CA 95344-1009
PO BOX 3010, MERCED, CA 95344-1010
PO BOX 3011, MERCED, CA 95344-1011
PO BOX 3012, MERCED, CA 95344-1012
PO BOX 3013, MERCED, CA 95344-1013
PO BOX 3014, MERCED, CA 95344-1014
PO BOX 3015, MERCED, CA 95344-1015
PO BOX 3016, MERCED, CA 95344-1016
PO BOX 3017, MERCED, CA 95344-1017
PO BOX 3018, MERCED, CA 95344-1018
PO BOX 3019, MERCED, CA 95344-1019
PO BOX 3020, MERCED, CA 95344-1020
PO BOX 3021, MERCED, CA 95344-1021
PO BOX 3022, MERCED, CA 95344-1022
PO BOX 3023, MERCED, CA 95344-1023
PO BOX 3024, MERCED, CA 95344-1024
PO BOX 3025, MERCED, CA 95344-1025
PO BOX 3026, MERCED, CA 95344-1026
PO BOX 3027, MERCED, CA 95344-1027
PO BOX 3028, MERCED, CA 95344-1028
PO BOX 3029, MERCED, CA 95344-1029
PO BOX 3030, MERCED, CA 95344-1030
PO BOX 3031, MERCED, CA 95344-1031
PO BOX 3032, MERCED, CA 95344-1032
PO BOX 3033, MERCED, CA 95344-1033
PO BOX 3034, MERCED, CA 95344-1034
PO BOX 3035, MERCED, CA 95344-1035
PO BOX 3036, MERCED, CA 95344-1036
PO BOX 3037, MERCED, CA 95344-1037
PO BOX 3038, MERCED, CA 95344-1038
PO BOX 3039, MERCED, CA 95344-1039
PO BOX 3040, MERCED, CA 95344-1040
PO BOX 3041, MERCED, CA 95344-1041
PO BOX 3042, MERCED, CA 95344-1042
PO BOX 3043, MERCED, CA 95344-1043
PO BOX 3044, MERCED, CA 95344-1044
PO BOX 3045, MERCED, CA 95344-1045
PO BOX 3046, MERCED, CA 95344-1046
PO BOX 3047, MERCED, CA 95344-1047
PO BOX 3048, MERCED, CA 95344-1048
PO BOX 3049, MERCED, CA 95344-1049
PO BOX 3050, MERCED, CA 95344-1050
PO BOX 3051, MERCED, CA 95344-1051
PO BOX 3052, MERCED, CA 95344-1052
PO BOX 3053, MERCED, CA 95344-1053
PO BOX 3054, MERCED, CA 95344-1054
PO BOX 3055, MERCED, CA 95344-1055
PO BOX 3056, MERCED, CA 95344-1056
PO BOX 3057, MERCED, CA 95344-1057
PO BOX 3058, MERCED, CA 95344-1058
PO BOX 3059, MERCED, CA 95344-1059
PO BOX 3060, MERCED, CA 95344-1060
PO BOX 3061, MERCED, CA 95344-1061
PO BOX 3062, MERCED, CA 95344-1062
PO BOX 3063, MERCED, CA 95344-1063
PO BOX 3064, MERCED, CA 95344-1064
PO BOX 3065, MERCED, CA 95344-1065
PO BOX 3066, MERCED, CA 95344-1066
PO BOX 3067, MERCED, CA 95344-1067
PO BOX 3068, MERCED, CA 95344-1068
PO BOX 3069, MERCED, CA 95344-1069
PO BOX 3070, MERCED, CA 95344-1070
PO BOX 3071, MERCED, CA 95344-1071
PO BOX 3072, MERCED, CA 95344-1072
PO BOX 3073, MERCED, CA 95344-1073
PO BOX 3074, MERCED, CA 95344-1074
PO BOX 3075, MERCED, CA 95344-1075
PO BOX 3076, MERCED, CA 95344-1076
PO BOX 3077, MERCED, CA 95344-1077
PO BOX 3078, MERCED, CA 95344-1078
PO BOX 3079, MERCED, CA 95344-1079
PO BOX 3080, MERCED, CA 95344-1080
PO BOX 3081, MERCED, CA 95344-1081
PO BOX 3082, MERCED, CA 95344-1082
PO BOX 3083, MERCED, CA 95344-1083
PO BOX 3084, MERCED, CA 95344-1084
PO BOX 3085, MERCED, CA 95344-1085
PO BOX 3086, MERCED, CA 95344-1086
PO BOX 3087, MERCED, CA 95344-1087
PO BOX 3088, MERCED, CA 95344-1088
PO BOX 3089, MERCED, CA 95344-1089
PO BOX 3090, MERCED, CA 95344-1090
PO BOX 3091, MERCED, CA 95344-1091
PO BOX 3092, MERCED, CA 95344-1092
PO BOX 3093, MERCED, CA 95344-1093
PO BOX 3094, MERCED, CA 95344-1094
PO BOX 3095, MERCED, CA 95344-1095
PO BOX 3096, MERCED, CA 95344-1096
PO BOX 3097, MERCED, CA 95344-1097
PO BOX 3098, MERCED, CA 95344-1098
PO BOX 3099, MERCED, CA 95344-1099
PO BOX 3100, MERCED, CA 95344-1100
PO BOX 3101, MERCED, CA 95344-1101
PO BOX 3102, MERCED, CA 95344-1102
PO BOX 3103, MERCED, CA 95344-1103
PO BOX 3104, MERCED, CA 95344-1104
PO BOX 3105, MERCED, CA 95344-1105
PO BOX 3106, MERCED, CA 95344-1106
PO BOX 3107, MERCED, CA 95344-1107
PO BOX 3108, MERCED, CA 95344-1108
PO BOX 3109, MERCED, CA 95344-1109
PO BOX 3110, MERCED, CA 95344-1110
PO BOX 3111, MERCED, CA 95344-1111
PO BOX 3112, MERCED, CA 95344-1112
PO BOX 3113, MERCED, CA 95344-1113
PO BOX 3114, MERCED, CA 95344-1114
PO BOX 3115, MERCED, CA 95344-1115
PO BOX 3116, MERCED, CA 95344-1116
PO BOX 3117, MERCED, CA 95344-1117
PO BOX 3118, MERCED, CA 95344-1118
PO BOX 3119, MERCED, CA 95344-1119
PO BOX 3120, MERCED, CA 95344-1120
PO BOX 3121, MERCED, CA 95344-1121
PO BOX 3122, MERCED, CA 95344-1122
PO BOX 3123, MERCED, CA 95344-1123
PO BOX 3124, MERCED, CA 95344-1124
PO BOX 3125, MERCED, CA 95344-1125
PO BOX 3126, MERCED, CA 95344-1126
PO BOX 3127, MERCED, CA 95344-1127
PO BOX 3128, MERCED, CA 95344-1128
PO BOX 3129, MERCED, CA 95344-1129
PO BOX 3130, MERCED, CA 95344-1130
PO BOX 3131, MERCED, CA 95344-1131
PO BOX 3132, MERCED, CA 95344-1132
PO BOX 3133, MERCED, CA 95344-1133
PO BOX 3134, MERCED, CA 95344-1134
PO BOX 3135, MERCED, CA 95344-1135
PO BOX 3136, MERCED, CA 95344-1136
PO BOX 3137, MERCED, CA 95344-1137
PO BOX 3138, MERCED, CA 95344-1138
PO BOX 3139, MERCED, CA 95344-1139
PO BOX 3140, MERCED, CA 95344-1140
PO BOX 3141, MERCED, CA 95344-1141
PO BOX 3142, MERCED, CA 95344-1142
PO BOX 3143, MERCED, CA 95344-1143
PO BOX 3144, MERCED, CA 95344-1144
PO BOX 3145, MERCED, CA 95344-1145
PO BOX 3146, MERCED, CA 95344-1146
PO BOX 3147, MERCED, CA 95344-1147
PO BOX 3148, MERCED, CA 95344-1148
PO BOX 3149, MERCED, CA 95344-1149
PO BOX 3150, MERCED, CA 95344-1150
PO BOX 3151, MERCED, CA 95344-1151
PO BOX 3152, MERCED, CA 95344-1152
PO BOX 3153, MERCED, CA 95344-1153
PO BOX 3154, MERCED, CA 95344-1154
PO BOX 3155, MERCED, CA 95344-1155
PO BOX 3156, MERCED, CA 95344-1156
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