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 801, ALTOONA, PA 16603-0801
PO BOX 802, ALTOONA, PA 16603-0802
PO BOX 803, ALTOONA, PA 16603-0803
PO BOX 804, ALTOONA, PA 16603-0804
PO BOX 805, ALTOONA, PA 16603-0805
PO BOX 806, ALTOONA, PA 16603-0806
PO BOX 807, ALTOONA, PA 16603-0807
PO BOX 808, ALTOONA, PA 16603-0808
PO BOX 809, ALTOONA, PA 16603-0809
PO BOX 810, ALTOONA, PA 16603-0810
PO BOX 811, ALTOONA, PA 16603-0811
PO BOX 812, ALTOONA, PA 16603-0812
PO BOX 813, ALTOONA, PA 16603-0813
PO BOX 814, ALTOONA, PA 16603-0814
PO BOX 815, ALTOONA, PA 16603-0815
PO BOX 816, ALTOONA, PA 16603-0816
PO BOX 817, ALTOONA, PA 16603-0817
PO BOX 818, ALTOONA, PA 16603-0818
PO BOX 819, ALTOONA, PA 16603-0819
PO BOX 820, ALTOONA, PA 16603-0820
PO BOX 821, ALTOONA, PA 16603-0821
PO BOX 822, ALTOONA, PA 16603-0822
PO BOX 823, ALTOONA, PA 16603-0823
PO BOX 824, ALTOONA, PA 16603-0824
PO BOX 825, ALTOONA, PA 16603-0825
PO BOX 826, ALTOONA, PA 16603-0826
PO BOX 827, ALTOONA, PA 16603-0827
PO BOX 828, ALTOONA, PA 16603-0828
PO BOX 829, ALTOONA, PA 16603-0829
PO BOX 830, ALTOONA, PA 16603-0830
PO BOX 831, ALTOONA, PA 16603-0831
PO BOX 832, ALTOONA, PA 16603-0832
PO BOX 833, ALTOONA, PA 16603-0833
PO BOX 834, ALTOONA, PA 16603-0834
PO BOX 835, ALTOONA, PA 16603-0835
PO BOX 836, ALTOONA, PA 16603-0836
PO BOX 837, ALTOONA, PA 16603-0837
PO BOX 838, ALTOONA, PA 16603-0838
PO BOX 839, ALTOONA, PA 16603-0839
PO BOX 840, ALTOONA, PA 16603-0840
PO BOX 841, ALTOONA, PA 16603-0841
PO BOX 842, ALTOONA, PA 16603-0842
PO BOX 843, ALTOONA, PA 16603-0843
PO BOX 844, ALTOONA, PA 16603-0844
PO BOX 845, ALTOONA, PA 16603-0845
PO BOX 846, ALTOONA, PA 16603-0846
PO BOX 847, ALTOONA, PA 16603-0847
PO BOX 848, ALTOONA, PA 16603-0848
PO BOX 849, ALTOONA, PA 16603-0849
PO BOX 850, ALTOONA, PA 16603-0850
PO BOX 851, ALTOONA, PA 16603-0851
PO BOX 852, ALTOONA, PA 16603-0852
PO BOX 853, ALTOONA, PA 16603-0853
PO BOX 854, ALTOONA, PA 16603-0854
PO BOX 855, ALTOONA, PA 16603-0855
PO BOX 856, ALTOONA, PA 16603-0856
PO BOX 857, ALTOONA, PA 16603-0857
PO BOX 858, ALTOONA, PA 16603-0858
PO BOX 859, ALTOONA, PA 16603-0859
PO BOX 860, ALTOONA, PA 16603-0860
PO BOX 861, ALTOONA, PA 16603-0861
PO BOX 862, ALTOONA, PA 16603-0862
PO BOX 863, ALTOONA, PA 16603-0863
PO BOX 864, ALTOONA, PA 16603-0864
PO BOX 865, ALTOONA, PA 16603-0865
PO BOX 866, ALTOONA, PA 16603-0866
PO BOX 867, ALTOONA, PA 16603-0867
PO BOX 868, ALTOONA, PA 16603-0868
PO BOX 869, ALTOONA, PA 16603-0869
PO BOX 870, ALTOONA, PA 16603-0870
PO BOX 871, ALTOONA, PA 16603-0871
PO BOX 872, ALTOONA, PA 16603-0872
PO BOX 873, ALTOONA, PA 16603-0873
PO BOX 874, ALTOONA, PA 16603-0874
PO BOX 875, ALTOONA, PA 16603-0875
PO BOX 876, ALTOONA, PA 16603-0876
PO BOX 877, ALTOONA, PA 16603-0877
PO BOX 878, ALTOONA, PA 16603-0878
PO BOX 879, ALTOONA, PA 16603-0879
PO BOX 880, ALTOONA, PA 16603-0880
PO BOX 881, ALTOONA, PA 16603-0881
PO BOX 882, ALTOONA, PA 16603-0882
PO BOX 883, ALTOONA, PA 16603-0883
PO BOX 884, ALTOONA, PA 16603-0884
PO BOX 885, ALTOONA, PA 16603-0885
PO BOX 886, ALTOONA, PA 16603-0886
PO BOX 887, ALTOONA, PA 16603-0887
PO BOX 888, ALTOONA, PA 16603-0888
PO BOX 889, ALTOONA, PA 16603-0889
PO BOX 890, ALTOONA, PA 16603-0890
PO BOX 891, ALTOONA, PA 16603-0891
PO BOX 892, ALTOONA, PA 16603-0892
PO BOX 893, ALTOONA, PA 16603-0893
PO BOX 894, ALTOONA, PA 16603-0894
PO BOX 895, ALTOONA, PA 16603-0895
PO BOX 896, ALTOONA, PA 16603-0896
PO BOX 897, ALTOONA, PA 16603-0897
PO BOX 898, ALTOONA, PA 16603-0898
PO BOX 899, ALTOONA, PA 16603-0899
PO BOX 900, ALTOONA, PA 16603-0900
PO BOX 901, ALTOONA, PA 16603-0901
PO BOX 902, ALTOONA, PA 16603-0902
PO BOX 903, ALTOONA, PA 16603-0903
PO BOX 904, ALTOONA, PA 16603-0904
PO BOX 905, ALTOONA, PA 16603-0905
PO BOX 906, ALTOONA, PA 16603-0906
PO BOX 907, ALTOONA, PA 16603-0907
PO BOX 908, ALTOONA, PA 16603-0908
PO BOX 909, ALTOONA, PA 16603-0909
PO BOX 910, ALTOONA, PA 16603-0910
PO BOX 911, ALTOONA, PA 16603-0911
PO BOX 912, ALTOONA, PA 16603-0912
PO BOX 913, ALTOONA, PA 16603-0913
PO BOX 914, ALTOONA, PA 16603-0914
PO BOX 915, ALTOONA, PA 16603-0915
PO BOX 916, ALTOONA, PA 16603-0916
PO BOX 917, ALTOONA, PA 16603-0917
PO BOX 918, ALTOONA, PA 16603-0918
PO BOX 919, ALTOONA, PA 16603-0919
PO BOX 920, ALTOONA, PA 16603-0920
PO BOX 921, ALTOONA, PA 16603-0921
PO BOX 922, ALTOONA, PA 16603-0922
PO BOX 923, ALTOONA, PA 16603-0923
PO BOX 924, ALTOONA, PA 16603-0924
PO BOX 925, ALTOONA, PA 16603-0925
PO BOX 926, ALTOONA, PA 16603-0926
PO BOX 927, ALTOONA, PA 16603-0927
PO BOX 928, ALTOONA, PA 16603-0928
PO BOX 929, ALTOONA, PA 16603-0929
PO BOX 930, ALTOONA, PA 16603-0930
PO BOX 931, ALTOONA, PA 16603-0931
PO BOX 932, ALTOONA, PA 16603-0932
PO BOX 933, ALTOONA, PA 16603-0933
PO BOX 934, ALTOONA, PA 16603-0934
PO BOX 935, ALTOONA, PA 16603-0935
PO BOX 936, ALTOONA, PA 16603-0936
PO BOX 937, ALTOONA, PA 16603-0937
PO BOX 938, ALTOONA, PA 16603-0938
PO BOX 939, ALTOONA, PA 16603-0939
PO BOX 940, ALTOONA, PA 16603-0940
PO BOX 941, ALTOONA, PA 16603-0941
PO BOX 942, ALTOONA, PA 16603-0942
PO BOX 943, ALTOONA, PA 16603-0943
PO BOX 944, ALTOONA, PA 16603-0944
PO BOX 945, ALTOONA, PA 16603-0945
PO BOX 946, ALTOONA, PA 16603-0946
PO BOX 947, ALTOONA, PA 16603-0947
PO BOX 948, ALTOONA, PA 16603-0948
PO BOX 949, ALTOONA, PA 16603-0949
PO BOX 950, ALTOONA, PA 16603-0950
PO BOX 951, ALTOONA, PA 16603-0951
PO BOX 952, ALTOONA, PA 16603-0952
PO BOX 953, ALTOONA, PA 16603-0953
PO BOX 954, ALTOONA, PA 16603-0954
PO BOX 955, ALTOONA, PA 16603-0955
PO BOX 956, ALTOONA, PA 16603-0956
PO BOX 957, ALTOONA, PA 16603-0957
PO BOX 958, ALTOONA, PA 16603-0958
PO BOX 959, ALTOONA, PA 16603-0959
PO BOX 960, ALTOONA, PA 16603-0960
PO BOX 961, ALTOONA, PA 16603-0961
PO BOX 962, ALTOONA, PA 16603-0962
PO BOX 963, ALTOONA, PA 16603-0963
PO BOX 964, ALTOONA, PA 16603-0964
PO BOX 965, ALTOONA, PA 16603-0965
PO BOX 966, ALTOONA, PA 16603-0966
PO BOX 967, ALTOONA, PA 16603-0967
PO BOX 968, ALTOONA, PA 16603-0968
PO BOX 969, ALTOONA, PA 16603-0969
PO BOX 970, ALTOONA, PA 16603-0970
PO BOX 971, ALTOONA, PA 16603-0971
PO BOX 972, ALTOONA, PA 16603-0972
PO BOX 973, ALTOONA, PA 16603-0973
PO BOX 974, ALTOONA, PA 16603-0974
PO BOX 975, ALTOONA, PA 16603-0975
PO BOX 976, ALTOONA, PA 16603-0976
PO BOX 977, ALTOONA, PA 16603-0977
PO BOX 978, ALTOONA, PA 16603-0978
PO BOX 979, ALTOONA, PA 16603-0979
PO BOX 980, ALTOONA, PA 16603-0980
PO BOX 981, ALTOONA, PA 16603-0981
PO BOX 982, ALTOONA, PA 16603-0982
PO BOX 983, ALTOONA, PA 16603-0983
PO BOX 984, ALTOONA, PA 16603-0984
PO BOX 985, ALTOONA, PA 16603-0985
PO BOX 986, ALTOONA, PA 16603-0986
PO BOX 987, ALTOONA, PA 16603-0987
PO BOX 988, ALTOONA, PA 16603-0988
PO BOX 989, ALTOONA, PA 16603-0989
PO BOX 990, ALTOONA, PA 16603-0990
PO BOX 991, ALTOONA, PA 16603-0991
PO BOX 992, ALTOONA, PA 16603-0992
PO BOX 993, ALTOONA, PA 16603-0993
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