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 3001, COLORADO SPRINGS, CO 80934-3001
PO BOX 3002, COLORADO SPRINGS, CO 80934-3002
PO BOX 3003, COLORADO SPRINGS, CO 80934-3003
PO BOX 3004, COLORADO SPRINGS, CO 80934-3004
PO BOX 3005, COLORADO SPRINGS, CO 80934-3005
PO BOX 3006, COLORADO SPRINGS, CO 80934-3006
PO BOX 3007, COLORADO SPRINGS, CO 80934-3007
PO BOX 3008, COLORADO SPRINGS, CO 80934-3008
PO BOX 3009, COLORADO SPRINGS, CO 80934-3009
PO BOX 3010, COLORADO SPRINGS, CO 80934-3010
PO BOX 3011, COLORADO SPRINGS, CO 80934-3011
PO BOX 3012, COLORADO SPRINGS, CO 80934-3012
PO BOX 3013, COLORADO SPRINGS, CO 80934-3013
PO BOX 3014, COLORADO SPRINGS, CO 80934-3014
PO BOX 3015, COLORADO SPRINGS, CO 80934-3015
PO BOX 3016, COLORADO SPRINGS, CO 80934-3016
PO BOX 3017, COLORADO SPRINGS, CO 80934-3017
PO BOX 3018, COLORADO SPRINGS, CO 80934-3018
PO BOX 3019, COLORADO SPRINGS, CO 80934-3019
PO BOX 3020, COLORADO SPRINGS, CO 80934-3020
PO BOX 3021, COLORADO SPRINGS, CO 80934-3021
PO BOX 3022, COLORADO SPRINGS, CO 80934-3022
PO BOX 3023, COLORADO SPRINGS, CO 80934-3023
PO BOX 3024, COLORADO SPRINGS, CO 80934-3024
PO BOX 3025, COLORADO SPRINGS, CO 80934-3025
PO BOX 3026, COLORADO SPRINGS, CO 80934-3026
PO BOX 3027, COLORADO SPRINGS, CO 80934-3027
PO BOX 3028, COLORADO SPRINGS, CO 80934-3028
PO BOX 3029, COLORADO SPRINGS, CO 80934-3029
PO BOX 3030, COLORADO SPRINGS, CO 80934-3030
PO BOX 3031, COLORADO SPRINGS, CO 80934-3031
PO BOX 3032, COLORADO SPRINGS, CO 80934-3032
PO BOX 3033, COLORADO SPRINGS, CO 80934-3033
PO BOX 3034, COLORADO SPRINGS, CO 80934-3034
PO BOX 3035, COLORADO SPRINGS, CO 80934-3035
PO BOX 3036, COLORADO SPRINGS, CO 80934-3036
PO BOX 3037, COLORADO SPRINGS, CO 80934-3037
PO BOX 3038, COLORADO SPRINGS, CO 80934-3038
PO BOX 3039, COLORADO SPRINGS, CO 80934-3039
PO BOX 3040, COLORADO SPRINGS, CO 80934-3040
PO BOX 3041, COLORADO SPRINGS, CO 80934-3041
PO BOX 3042, COLORADO SPRINGS, CO 80934-3042
PO BOX 3043, COLORADO SPRINGS, CO 80934-3043
PO BOX 3044, COLORADO SPRINGS, CO 80934-3044
PO BOX 3045, COLORADO SPRINGS, CO 80934-3045
PO BOX 3046, COLORADO SPRINGS, CO 80934-3046
PO BOX 3047, COLORADO SPRINGS, CO 80934-3047
PO BOX 3048, COLORADO SPRINGS, CO 80934-3048
PO BOX 3049, COLORADO SPRINGS, CO 80934-3049
PO BOX 3050, COLORADO SPRINGS, CO 80934-3050
PO BOX 3051, COLORADO SPRINGS, CO 80934-3051
PO BOX 3052, COLORADO SPRINGS, CO 80934-3052
PO BOX 3053, COLORADO SPRINGS, CO 80934-3053
PO BOX 3054, COLORADO SPRINGS, CO 80934-3054
PO BOX 3055, COLORADO SPRINGS, CO 80934-3055
PO BOX 3056, COLORADO SPRINGS, CO 80934-3056
PO BOX 3057, COLORADO SPRINGS, CO 80934-3057
PO BOX 3058, COLORADO SPRINGS, CO 80934-3058
PO BOX 3059, COLORADO SPRINGS, CO 80934-3059
PO BOX 3060, COLORADO SPRINGS, CO 80934-3060
PO BOX 3061, COLORADO SPRINGS, CO 80934-3061
PO BOX 3062, COLORADO SPRINGS, CO 80934-3062
PO BOX 3063, COLORADO SPRINGS, CO 80934-3063
PO BOX 3064, COLORADO SPRINGS, CO 80934-3064
PO BOX 3065, COLORADO SPRINGS, CO 80934-3065
PO BOX 3066, COLORADO SPRINGS, CO 80934-3066
PO BOX 3067, COLORADO SPRINGS, CO 80934-3067
PO BOX 3068, COLORADO SPRINGS, CO 80934-3068
PO BOX 3069, COLORADO SPRINGS, CO 80934-3069
PO BOX 3070, COLORADO SPRINGS, CO 80934-3070
PO BOX 3071, COLORADO SPRINGS, CO 80934-3071
PO BOX 3072, COLORADO SPRINGS, CO 80934-3072
PO BOX 3073, COLORADO SPRINGS, CO 80934-3073
PO BOX 3074, COLORADO SPRINGS, CO 80934-3074
PO BOX 3075, COLORADO SPRINGS, CO 80934-3075
PO BOX 3076, COLORADO SPRINGS, CO 80934-3076
PO BOX 3077, COLORADO SPRINGS, CO 80934-3077
PO BOX 3078, COLORADO SPRINGS, CO 80934-3078
PO BOX 3079, COLORADO SPRINGS, CO 80934-3079
PO BOX 3080, COLORADO SPRINGS, CO 80934-3080
PO BOX 3081, COLORADO SPRINGS, CO 80934-3081
PO BOX 3082, COLORADO SPRINGS, CO 80934-3082
PO BOX 3083, COLORADO SPRINGS, CO 80934-3083
PO BOX 3084, COLORADO SPRINGS, CO 80934-3084
PO BOX 3085, COLORADO SPRINGS, CO 80934-3085
PO BOX 3086, COLORADO SPRINGS, CO 80934-3086
PO BOX 3087, COLORADO SPRINGS, CO 80934-3087
PO BOX 3088, COLORADO SPRINGS, CO 80934-3088
PO BOX 3089, COLORADO SPRINGS, CO 80934-3089
PO BOX 3090, COLORADO SPRINGS, CO 80934-3090
PO BOX 3091, COLORADO SPRINGS, CO 80934-3091
PO BOX 3092, COLORADO SPRINGS, CO 80934-3092
PO BOX 3093, COLORADO SPRINGS, CO 80934-3093
PO BOX 3094, COLORADO SPRINGS, CO 80934-3094
PO BOX 3095, COLORADO SPRINGS, CO 80934-3095
PO BOX 3096, COLORADO SPRINGS, CO 80934-3096
PO BOX 3097, COLORADO SPRINGS, CO 80934-3097
PO BOX 3098, COLORADO SPRINGS, CO 80934-3098
PO BOX 3099, COLORADO SPRINGS, CO 80934-3099
PO BOX 3100, COLORADO SPRINGS, CO 80934-3100
PO BOX 3101, COLORADO SPRINGS, CO 80934-3101
PO BOX 3102, COLORADO SPRINGS, CO 80934-3102
PO BOX 3103, COLORADO SPRINGS, CO 80934-3103
PO BOX 3104, COLORADO SPRINGS, CO 80934-3104
PO BOX 3105, COLORADO SPRINGS, CO 80934-3105
PO BOX 3106, COLORADO SPRINGS, CO 80934-3106
PO BOX 3107, COLORADO SPRINGS, CO 80934-3107
PO BOX 3108, COLORADO SPRINGS, CO 80934-3108
PO BOX 3109, COLORADO SPRINGS, CO 80934-3109
PO BOX 3110, COLORADO SPRINGS, CO 80934-3110
PO BOX 3111, COLORADO SPRINGS, CO 80934-3111
PO BOX 3112, COLORADO SPRINGS, CO 80934-3112
PO BOX 3113, COLORADO SPRINGS, CO 80934-3113
PO BOX 3114, COLORADO SPRINGS, CO 80934-3114
PO BOX 3115, COLORADO SPRINGS, CO 80934-3115
PO BOX 3116, COLORADO SPRINGS, CO 80934-3116
PO BOX 3117, COLORADO SPRINGS, CO 80934-3117
PO BOX 3118, COLORADO SPRINGS, CO 80934-3118
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