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 52800, PHOENIX, AZ 85072-2800
PO BOX 52801, PHOENIX, AZ 85072-2801
PO BOX 52802, PHOENIX, AZ 85072-2802
PO BOX 52803, PHOENIX, AZ 85072-2803
PO BOX 52804, PHOENIX, AZ 85072-2804
PO BOX 52805, PHOENIX, AZ 85072-2805
PO BOX 52806, PHOENIX, AZ 85072-2806
PO BOX 52807, PHOENIX, AZ 85072-2807
PO BOX 52808, PHOENIX, AZ 85072-2808
PO BOX 52809, PHOENIX, AZ 85072-2809
PO BOX 52810, PHOENIX, AZ 85072-2810
PO BOX 52811, PHOENIX, AZ 85072-2811
PO BOX 52812, PHOENIX, AZ 85072-2812
PO BOX 52813, PHOENIX, AZ 85072-2813
PO BOX 52814, PHOENIX, AZ 85072-2814
PO BOX 52815, PHOENIX, AZ 85072-2815
PO BOX 52816, PHOENIX, AZ 85072-2816
PO BOX 52817, PHOENIX, AZ 85072-2817
PO BOX 52818, PHOENIX, AZ 85072-2818
PO BOX 52819, PHOENIX, AZ 85072-2819
PO BOX 52820, PHOENIX, AZ 85072-2820
PO BOX 52821, PHOENIX, AZ 85072-2821
PO BOX 52822, PHOENIX, AZ 85072-2822
PO BOX 52823, PHOENIX, AZ 85072-2823
PO BOX 52824, PHOENIX, AZ 85072-2824
PO BOX 52825, PHOENIX, AZ 85072-2825
PO BOX 52826, PHOENIX, AZ 85072-2826
PO BOX 52827, PHOENIX, AZ 85072-2827
PO BOX 52828, PHOENIX, AZ 85072-2828
PO BOX 52829, PHOENIX, AZ 85072-2829
PO BOX 52830, PHOENIX, AZ 85072-2830
PO BOX 52831, PHOENIX, AZ 85072-2831
PO BOX 52832, PHOENIX, AZ 85072-2832
PO BOX 52833, PHOENIX, AZ 85072-2833
PO BOX 52834, PHOENIX, AZ 85072-2834
PO BOX 52835, PHOENIX, AZ 85072-2835
PO BOX 52836, PHOENIX, AZ 85072-2836
PO BOX 52837, PHOENIX, AZ 85072-2837
PO BOX 52838, PHOENIX, AZ 85072-2838
PO BOX 52839, PHOENIX, AZ 85072-2839
PO BOX 52840, PHOENIX, AZ 85072-2840
PO BOX 52841, PHOENIX, AZ 85072-2841
PO BOX 52842, PHOENIX, AZ 85072-2842
PO BOX 52843, PHOENIX, AZ 85072-2843
PO BOX 52844, PHOENIX, AZ 85072-2844
PO BOX 52845, PHOENIX, AZ 85072-2845
PO BOX 52846, PHOENIX, AZ 85072-2846
PO BOX 52847, PHOENIX, AZ 85072-2847
PO BOX 52848, PHOENIX, AZ 85072-2848
PO BOX 52849, PHOENIX, AZ 85072-2849
PO BOX 52850, PHOENIX, AZ 85072-2850
PO BOX 52851, PHOENIX, AZ 85072-2851
PO BOX 52852, PHOENIX, AZ 85072-2852
PO BOX 52853, PHOENIX, AZ 85072-2853
PO BOX 52854, PHOENIX, AZ 85072-2854
PO BOX 52855, PHOENIX, AZ 85072-2855
PO BOX 52856, PHOENIX, AZ 85072-2856
PO BOX 52857, PHOENIX, AZ 85072-2857
PO BOX 52858, PHOENIX, AZ 85072-2858
PO BOX 52859, PHOENIX, AZ 85072-2859
PO BOX 52860, PHOENIX, AZ 85072-2860
PO BOX 52861, PHOENIX, AZ 85072-2861
PO BOX 52862, PHOENIX, AZ 85072-2862
PO BOX 52863, PHOENIX, AZ 85072-2863
PO BOX 52864, PHOENIX, AZ 85072-2864
PO BOX 52865, PHOENIX, AZ 85072-2865
PO BOX 52866, PHOENIX, AZ 85072-2866
PO BOX 52867, PHOENIX, AZ 85072-2867
PO BOX 52868, PHOENIX, AZ 85072-2868
PO BOX 52869, PHOENIX, AZ 85072-2869
PO BOX 52870, PHOENIX, AZ 85072-2870
PO BOX 52871, PHOENIX, AZ 85072-2871
PO BOX 52872, PHOENIX, AZ 85072-2872
PO BOX 52873, PHOENIX, AZ 85072-2873
PO BOX 52874, PHOENIX, AZ 85072-2874
PO BOX 52875, PHOENIX, AZ 85072-2875
PO BOX 52876, PHOENIX, AZ 85072-2876
PO BOX 52877, PHOENIX, AZ 85072-2877
PO BOX 52878, PHOENIX, AZ 85072-2878
PO BOX 52879, PHOENIX, AZ 85072-2879
PO BOX 52880, PHOENIX, AZ 85072-2880
PO BOX 52881, PHOENIX, AZ 85072-2881
PO BOX 52882, PHOENIX, AZ 85072-2882
PO BOX 52883, PHOENIX, AZ 85072-2883
PO BOX 52884, PHOENIX, AZ 85072-2884
PO BOX 52885, PHOENIX, AZ 85072-2885
PO BOX 52886, PHOENIX, AZ 85072-2886
PO BOX 52887, PHOENIX, AZ 85072-2887
PO BOX 52888, PHOENIX, AZ 85072-2888
PO BOX 52889, PHOENIX, AZ 85072-2889
PO BOX 52890, PHOENIX, AZ 85072-2890
PO BOX 52891, PHOENIX, AZ 85072-2891
PO BOX 52892, PHOENIX, AZ 85072-2892
PO BOX 52893, PHOENIX, AZ 85072-2893
PO BOX 52894, PHOENIX, AZ 85072-2894
PO BOX 52895, PHOENIX, AZ 85072-2895
PO BOX 52896, PHOENIX, AZ 85072-2896
PO BOX 52897, PHOENIX, AZ 85072-2897
PO BOX 52898, PHOENIX, AZ 85072-2898
PO BOX 52899, PHOENIX, AZ 85072-2899
PO BOX 52900, PHOENIX, AZ 85072-2900
PO BOX 52901, PHOENIX, AZ 85072-2901
PO BOX 52902, PHOENIX, AZ 85072-2902
PO BOX 52903, PHOENIX, AZ 85072-2903
PO BOX 52904, PHOENIX, AZ 85072-2904
PO BOX 52905, PHOENIX, AZ 85072-2905
PO BOX 52906, PHOENIX, AZ 85072-2906
PO BOX 52907, PHOENIX, AZ 85072-2907
PO BOX 52908, PHOENIX, AZ 85072-2908
PO BOX 52909, PHOENIX, AZ 85072-2909
PO BOX 52910, PHOENIX, AZ 85072-2910
PO BOX 52911, PHOENIX, AZ 85072-2911
PO BOX 52912, PHOENIX, AZ 85072-2912
PO BOX 52913, PHOENIX, AZ 85072-2913
PO BOX 52914, PHOENIX, AZ 85072-2914
PO BOX 52915, PHOENIX, AZ 85072-2915
PO BOX 52916, PHOENIX, AZ 85072-2916
PO BOX 52917, PHOENIX, AZ 85072-2917
PO BOX 52918, PHOENIX, AZ 85072-2918
PO BOX 52919, PHOENIX, AZ 85072-2919
PO BOX 52920, PHOENIX, AZ 85072-2920
PO BOX 52921, PHOENIX, AZ 85072-2921
PO BOX 52922, PHOENIX, AZ 85072-2922
PO BOX 52923, PHOENIX, AZ 85072-2923
PO BOX 52924, PHOENIX, AZ 85072-2924
PO BOX 52925, PHOENIX, AZ 85072-2925
PO BOX 52926, PHOENIX, AZ 85072-2926
PO BOX 52927, PHOENIX, AZ 85072-2927
PO BOX 52928, PHOENIX, AZ 85072-2928
PO BOX 52929, PHOENIX, AZ 85072-2929
PO BOX 52930, PHOENIX, AZ 85072-2930
PO BOX 52931, PHOENIX, AZ 85072-2931
PO BOX 52932, PHOENIX, AZ 85072-2932
PO BOX 52933, PHOENIX, AZ 85072-2933
PO BOX 52934, PHOENIX, AZ 85072-2934
PO BOX 52935, PHOENIX, AZ 85072-2935
PO BOX 52936, PHOENIX, AZ 85072-2936
PO BOX 52937, PHOENIX, AZ 85072-2937
PO BOX 52938, PHOENIX, AZ 85072-2938
PO BOX 52939, PHOENIX, AZ 85072-2939
PO BOX 52940, PHOENIX, AZ 85072-2940
PO BOX 52941, PHOENIX, AZ 85072-2941
PO BOX 52942, PHOENIX, AZ 85072-2942
PO BOX 52943, PHOENIX, AZ 85072-2943
PO BOX 52944, PHOENIX, AZ 85072-2944
PO BOX 52945, PHOENIX, AZ 85072-2945
PO BOX 52946, PHOENIX, AZ 85072-2946
PO BOX 52947, PHOENIX, AZ 85072-2947
PO BOX 52948, PHOENIX, AZ 85072-2948
PO BOX 52949, PHOENIX, AZ 85072-2949
PO BOX 52950, PHOENIX, AZ 85072-2950
PO BOX 52951, PHOENIX, AZ 85072-2951
PO BOX 52952, PHOENIX, AZ 85072-2952
PO BOX 52953, PHOENIX, AZ 85072-2953
PO BOX 52954, PHOENIX, AZ 85072-2954
PO BOX 52955, PHOENIX, AZ 85072-2955
PO BOX 52956, PHOENIX, AZ 85072-2956
PO BOX 52957, PHOENIX, AZ 85072-2957
PO BOX 52958, PHOENIX, AZ 85072-2958
PO BOX 52959, PHOENIX, AZ 85072-2959
PO BOX 52960, PHOENIX, AZ 85072-2960
PO BOX 52961, PHOENIX, AZ 85072-2961
PO BOX 52962, PHOENIX, AZ 85072-2962
PO BOX 52963, PHOENIX, AZ 85072-2963
PO BOX 52964, PHOENIX, AZ 85072-2964
PO BOX 52965, PHOENIX, AZ 85072-2965
PO BOX 52966, PHOENIX, AZ 85072-2966
PO BOX 52967, PHOENIX, AZ 85072-2967
PO BOX 52968, PHOENIX, AZ 85072-2968
PO BOX 52969, PHOENIX, AZ 85072-2969
PO BOX 52970, PHOENIX, AZ 85072-2970
PO BOX 52971, PHOENIX, AZ 85072-2971
PO BOX 52972, PHOENIX, AZ 85072-2972
PO BOX 52973, PHOENIX, AZ 85072-2973
PO BOX 52974, PHOENIX, AZ 85072-2974
PO BOX 52975, PHOENIX, AZ 85072-2975
PO BOX 52976, PHOENIX, AZ 85072-2976
PO BOX 52977, PHOENIX, AZ 85072-2977
PO BOX 52978, PHOENIX, AZ 85072-2978
PO BOX 52979, PHOENIX, AZ 85072-2979
PO BOX 52980, PHOENIX, AZ 85072-2980
PO BOX 52981, PHOENIX, AZ 85072-2981
PO BOX 52982, PHOENIX, AZ 85072-2982
PO BOX 52983, PHOENIX, AZ 85072-2983
PO BOX 52984, PHOENIX, AZ 85072-2984
PO BOX 52985, PHOENIX, AZ 85072-2985
PO BOX 52986, PHOENIX, AZ 85072-2986
PO BOX 52987, PHOENIX, AZ 85072-2987
PO BOX 52988, PHOENIX, AZ 85072-2988
PO BOX 52989, PHOENIX, AZ 85072-2989
PO BOX 52990, PHOENIX, AZ 85072-2990
PO BOX 52991, PHOENIX, AZ 85072-2991
PO BOX 52992, PHOENIX, AZ 85072-2992
PO BOX 52993, PHOENIX, AZ 85072-2993
PO BOX 52994, PHOENIX, AZ 85072-2994
PO BOX 52995, PHOENIX, AZ 85072-2995
PO BOX 52996, PHOENIX, AZ 85072-2996
PO BOX 52997, PHOENIX, AZ 85072-2997
PO BOX 52998, PHOENIX, AZ 85072-2998
PO BOX 52999, PHOENIX, AZ 85072-2999
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