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 30914, CORPUS CHRISTI, TX 78463-0914
PO BOX 30915, CORPUS CHRISTI, TX 78463-0915
PO BOX 30916, CORPUS CHRISTI, TX 78463-0916
PO BOX 30917, CORPUS CHRISTI, TX 78463-0917
PO BOX 30918, CORPUS CHRISTI, TX 78463-0918
PO BOX 30919, CORPUS CHRISTI, TX 78463-0919
PO BOX 30920, CORPUS CHRISTI, TX 78463-0920
PO BOX 30921, CORPUS CHRISTI, TX 78463-0921
PO BOX 30922, CORPUS CHRISTI, TX 78463-0922
PO BOX 30923, CORPUS CHRISTI, TX 78463-0923
PO BOX 30924, CORPUS CHRISTI, TX 78463-0924
PO BOX 30925, CORPUS CHRISTI, TX 78463-0925
PO BOX 30926, CORPUS CHRISTI, TX 78463-0926
PO BOX 30927, CORPUS CHRISTI, TX 78463-0927
PO BOX 30928, CORPUS CHRISTI, TX 78463-0928
PO BOX 30929, CORPUS CHRISTI, TX 78463-0929
PO BOX 30930, CORPUS CHRISTI, TX 78463-0930
PO BOX 30931, CORPUS CHRISTI, TX 78463-0931
PO BOX 30932, CORPUS CHRISTI, TX 78463-0932
PO BOX 30933, CORPUS CHRISTI, TX 78463-0933
PO BOX 30934, CORPUS CHRISTI, TX 78463-0934
PO BOX 30935, CORPUS CHRISTI, TX 78463-0935
PO BOX 30936, CORPUS CHRISTI, TX 78463-0936
PO BOX 30937, CORPUS CHRISTI, TX 78463-0937
PO BOX 30938, CORPUS CHRISTI, TX 78463-0938
PO BOX 30939, CORPUS CHRISTI, TX 78463-0939
PO BOX 30940, CORPUS CHRISTI, TX 78463-0940
PO BOX 30941, CORPUS CHRISTI, TX 78463-0941
PO BOX 30942, CORPUS CHRISTI, TX 78463-0942
PO BOX 30943, CORPUS CHRISTI, TX 78463-0943
PO BOX 30944, CORPUS CHRISTI, TX 78463-0944
PO BOX 30945, CORPUS CHRISTI, TX 78463-0945
PO BOX 30946, CORPUS CHRISTI, TX 78463-0946
PO BOX 30947, CORPUS CHRISTI, TX 78463-0947
PO BOX 30948, CORPUS CHRISTI, TX 78463-0948
PO BOX 30949, CORPUS CHRISTI, TX 78463-0949
PO BOX 30950, CORPUS CHRISTI, TX 78463-0950
PO BOX 30951, CORPUS CHRISTI, TX 78463-0951
PO BOX 30952, CORPUS CHRISTI, TX 78463-0952
PO BOX 30953, CORPUS CHRISTI, TX 78463-0953
PO BOX 30954, CORPUS CHRISTI, TX 78463-0954
PO BOX 30955, CORPUS CHRISTI, TX 78463-0955
PO BOX 30956, CORPUS CHRISTI, TX 78463-0956
PO BOX 30957, CORPUS CHRISTI, TX 78463-0957
PO BOX 30958, CORPUS CHRISTI, TX 78463-0958
PO BOX 30959, CORPUS CHRISTI, TX 78463-0959
PO BOX 30960, CORPUS CHRISTI, TX 78463-0960
PO BOX 30961, CORPUS CHRISTI, TX 78463-0961
PO BOX 30962, CORPUS CHRISTI, TX 78463-0962
PO BOX 30963, CORPUS CHRISTI, TX 78463-0963
PO BOX 30964, CORPUS CHRISTI, TX 78463-0964
PO BOX 30965, CORPUS CHRISTI, TX 78463-0965
PO BOX 30966, CORPUS CHRISTI, TX 78463-0966
PO BOX 30967, CORPUS CHRISTI, TX 78463-0967
PO BOX 30968, CORPUS CHRISTI, TX 78463-0968
PO BOX 30969, CORPUS CHRISTI, TX 78463-0969
PO BOX 30970, CORPUS CHRISTI, TX 78463-0970
PO BOX 30971, CORPUS CHRISTI, TX 78463-0971
PO BOX 30972, CORPUS CHRISTI, TX 78463-0972
PO BOX 30973, CORPUS CHRISTI, TX 78463-0973
PO BOX 30974, CORPUS CHRISTI, TX 78463-0974
PO BOX 30975, CORPUS CHRISTI, TX 78463-0975
PO BOX 30976, CORPUS CHRISTI, TX 78463-0976
PO BOX 30977, CORPUS CHRISTI, TX 78463-0977
PO BOX 30978, CORPUS CHRISTI, TX 78463-0978
PO BOX 30979, CORPUS CHRISTI, TX 78463-0979
PO BOX 30980, CORPUS CHRISTI, TX 78463-0980
PO BOX 30981, CORPUS CHRISTI, TX 78463-0981
PO BOX 30982, CORPUS CHRISTI, TX 78463-0982
PO BOX 30983, CORPUS CHRISTI, TX 78463-0983
PO BOX 30984, CORPUS CHRISTI, TX 78463-0984
PO BOX 30985, CORPUS CHRISTI, TX 78463-0985
PO BOX 30986, CORPUS CHRISTI, TX 78463-0986
PO BOX 30987, CORPUS CHRISTI, TX 78463-0987
PO BOX 30988, CORPUS CHRISTI, TX 78463-0988
PO BOX 30989, CORPUS CHRISTI, TX 78463-0989
PO BOX 30990, CORPUS CHRISTI, TX 78463-0990
PO BOX 30991, CORPUS CHRISTI, TX 78463-0991
PO BOX 30992, CORPUS CHRISTI, TX 78463-0992
PO BOX 30993, CORPUS CHRISTI, TX 78463-0993
PO BOX 30994, CORPUS CHRISTI, TX 78463-0994
PO BOX 30995, CORPUS CHRISTI, TX 78463-0995
PO BOX 30996, CORPUS CHRISTI, TX 78463-0996
PO BOX 30997, CORPUS CHRISTI, TX 78463-0997
PO BOX 30998, CORPUS CHRISTI, TX 78463-0998
PO BOX 30999, CORPUS CHRISTI, TX 78463-0999
PO BOX 31000, CORPUS CHRISTI, TX 78463-1000
PO BOX 31001, CORPUS CHRISTI, TX 78463-1001
PO BOX 31002, CORPUS CHRISTI, TX 78463-1002
PO BOX 31003, CORPUS CHRISTI, TX 78463-1003
PO BOX 31004, CORPUS CHRISTI, TX 78463-1004
PO BOX 31005, CORPUS CHRISTI, TX 78463-1005
PO BOX 31006, CORPUS CHRISTI, TX 78463-1006
PO BOX 31007, CORPUS CHRISTI, TX 78463-1007
PO BOX 31008, CORPUS CHRISTI, TX 78463-1008
PO BOX 31009, CORPUS CHRISTI, TX 78463-1009
PO BOX 31010, CORPUS CHRISTI, TX 78463-1010
PO BOX 31011, CORPUS CHRISTI, TX 78463-1011
PO BOX 31012, CORPUS CHRISTI, TX 78463-1012
PO BOX 31013, CORPUS CHRISTI, TX 78463-1013
PO BOX 31014, CORPUS CHRISTI, TX 78463-1014
PO BOX 31015, CORPUS CHRISTI, TX 78463-1015
PO BOX 31016, CORPUS CHRISTI, TX 78463-1016
PO BOX 31017, CORPUS CHRISTI, TX 78463-1017
PO BOX 31018, CORPUS CHRISTI, TX 78463-1018
PO BOX 31019, CORPUS CHRISTI, TX 78463-1019
PO BOX 31020, CORPUS CHRISTI, TX 78463-1020
PO BOX 31021, CORPUS CHRISTI, TX 78463-1021
PO BOX 31022, CORPUS CHRISTI, TX 78463-1022
PO BOX 31023, CORPUS CHRISTI, TX 78463-1023
PO BOX 31024, CORPUS CHRISTI, TX 78463-1024
PO BOX 31025, CORPUS CHRISTI, TX 78463-1025
PO BOX 31026, CORPUS CHRISTI, TX 78463-1026
PO BOX 31027, CORPUS CHRISTI, TX 78463-1027
PO BOX 31028, CORPUS CHRISTI, TX 78463-1028
PO BOX 31029, CORPUS CHRISTI, TX 78463-1029
PO BOX 31030, CORPUS CHRISTI, TX 78463-1030
PO BOX 31031, CORPUS CHRISTI, TX 78463-1031
PO BOX 31032, CORPUS CHRISTI, TX 78463-1032
PO BOX 31033, CORPUS CHRISTI, TX 78463-1033
PO BOX 31034, CORPUS CHRISTI, TX 78463-1034
PO BOX 31035, CORPUS CHRISTI, TX 78463-1035
PO BOX 31036, CORPUS CHRISTI, TX 78463-1036
PO BOX 31037, CORPUS CHRISTI, TX 78463-1037
PO BOX 31038, CORPUS CHRISTI, TX 78463-1038
PO BOX 31039, CORPUS CHRISTI, TX 78463-1039
PO BOX 31040, CORPUS CHRISTI, TX 78463-1040
PO BOX 31041, CORPUS CHRISTI, TX 78463-1041
PO BOX 31042, CORPUS CHRISTI, TX 78463-1042
PO BOX 31043, CORPUS CHRISTI, TX 78463-1043
PO BOX 31044, CORPUS CHRISTI, TX 78463-1044
PO BOX 31045, CORPUS CHRISTI, TX 78463-1045
PO BOX 31046, CORPUS CHRISTI, TX 78463-1046
PO BOX 31047, CORPUS CHRISTI, TX 78463-1047
PO BOX 31048, CORPUS CHRISTI, TX 78463-1048
PO BOX 31049, CORPUS CHRISTI, TX 78463-1049
PO BOX 31050, CORPUS CHRISTI, TX 78463-1050
PO BOX 31051, CORPUS CHRISTI, TX 78463-1051
PO BOX 31052, CORPUS CHRISTI, TX 78463-1052
PO BOX 31053, CORPUS CHRISTI, TX 78463-1053
PO BOX 31054, CORPUS CHRISTI, TX 78463-1054
PO BOX 31055, CORPUS CHRISTI, TX 78463-1055
PO BOX 31056, CORPUS CHRISTI, TX 78463-1056
PO BOX 31057, CORPUS CHRISTI, TX 78463-1057
PO BOX 31058, CORPUS CHRISTI, TX 78463-1058
PO BOX 31059, CORPUS CHRISTI, TX 78463-1059
PO BOX 31060, CORPUS CHRISTI, TX 78463-1060
PO BOX 31061, CORPUS CHRISTI, TX 78463-1061
PO BOX 31062, CORPUS CHRISTI, TX 78463-1062
PO BOX 31063, CORPUS CHRISTI, TX 78463-1063
PO BOX 31064, CORPUS CHRISTI, TX 78463-1064
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