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 2001, CALIFORNIA CITY, CA 93504-0001
PO BOX 2002, CALIFORNIA CITY, CA 93504-0002
PO BOX 2003, CALIFORNIA CITY, CA 93504-0003
PO BOX 2004, CALIFORNIA CITY, CA 93504-0004
PO BOX 2005, CALIFORNIA CITY, CA 93504-0005
PO BOX 2006, CALIFORNIA CITY, CA 93504-0006
PO BOX 2007, CALIFORNIA CITY, CA 93504-0007
PO BOX 2008, CALIFORNIA CITY, CA 93504-0008
PO BOX 2009, CALIFORNIA CITY, CA 93504-0009
PO BOX 2010, CALIFORNIA CITY, CA 93504-0010
PO BOX 2011, CALIFORNIA CITY, CA 93504-0011
PO BOX 2012, CALIFORNIA CITY, CA 93504-0012
PO BOX 2013, CALIFORNIA CITY, CA 93504-0013
PO BOX 2014, CALIFORNIA CITY, CA 93504-0014
PO BOX 2015, CALIFORNIA CITY, CA 93504-0015
PO BOX 2016, CALIFORNIA CITY, CA 93504-0016
PO BOX 2017, CALIFORNIA CITY, CA 93504-0017
PO BOX 2018, CALIFORNIA CITY, CA 93504-0018
PO BOX 2019, CALIFORNIA CITY, CA 93504-0019
PO BOX 2020, CALIFORNIA CITY, CA 93504-0020
PO BOX 2021, CALIFORNIA CITY, CA 93504-0021
PO BOX 2022, CALIFORNIA CITY, CA 93504-0022
PO BOX 2023, CALIFORNIA CITY, CA 93504-0023
PO BOX 2024, CALIFORNIA CITY, CA 93504-0024
PO BOX 2025, CALIFORNIA CITY, CA 93504-0025
PO BOX 2026, CALIFORNIA CITY, CA 93504-0026
PO BOX 2027, CALIFORNIA CITY, CA 93504-0027
PO BOX 2028, CALIFORNIA CITY, CA 93504-0028
PO BOX 2029, CALIFORNIA CITY, CA 93504-0029
PO BOX 2030, CALIFORNIA CITY, CA 93504-0030
PO BOX 2031, CALIFORNIA CITY, CA 93504-0031
PO BOX 2032, CALIFORNIA CITY, CA 93504-0032
PO BOX 2033, CALIFORNIA CITY, CA 93504-0033
PO BOX 2034, CALIFORNIA CITY, CA 93504-0034
PO BOX 2035, CALIFORNIA CITY, CA 93504-0035
PO BOX 2036, CALIFORNIA CITY, CA 93504-0036
PO BOX 2037, CALIFORNIA CITY, CA 93504-0037
PO BOX 2038, CALIFORNIA CITY, CA 93504-0038
PO BOX 2039, CALIFORNIA CITY, CA 93504-0039
PO BOX 2040, CALIFORNIA CITY, CA 93504-0040
PO BOX 2041, CALIFORNIA CITY, CA 93504-0041
PO BOX 2042, CALIFORNIA CITY, CA 93504-0042
PO BOX 2043, CALIFORNIA CITY, CA 93504-0043
PO BOX 2044, CALIFORNIA CITY, CA 93504-0044
PO BOX 2045, CALIFORNIA CITY, CA 93504-0045
PO BOX 2046, CALIFORNIA CITY, CA 93504-0046
PO BOX 2047, CALIFORNIA CITY, CA 93504-0047
PO BOX 2048, CALIFORNIA CITY, CA 93504-0048
PO BOX 2049, CALIFORNIA CITY, CA 93504-0049
PO BOX 2050, CALIFORNIA CITY, CA 93504-0050
PO BOX 2051, CALIFORNIA CITY, CA 93504-0051
PO BOX 2052, CALIFORNIA CITY, CA 93504-0052
PO BOX 2053, CALIFORNIA CITY, CA 93504-0053
PO BOX 2054, CALIFORNIA CITY, CA 93504-0054
PO BOX 2055, CALIFORNIA CITY, CA 93504-0055
PO BOX 2056, CALIFORNIA CITY, CA 93504-0056
PO BOX 2057, CALIFORNIA CITY, CA 93504-0057
PO BOX 2058, CALIFORNIA CITY, CA 93504-0058
PO BOX 2059, CALIFORNIA CITY, CA 93504-0059
PO BOX 2060, CALIFORNIA CITY, CA 93504-0060
PO BOX 2061, CALIFORNIA CITY, CA 93504-0061
PO BOX 2062, CALIFORNIA CITY, CA 93504-0062
PO BOX 2063, CALIFORNIA CITY, CA 93504-0063
PO BOX 2064, CALIFORNIA CITY, CA 93504-0064
PO BOX 2065, CALIFORNIA CITY, CA 93504-0065
PO BOX 2066, CALIFORNIA CITY, CA 93504-0066
PO BOX 2067, CALIFORNIA CITY, CA 93504-0067
PO BOX 2068, CALIFORNIA CITY, CA 93504-0068
PO BOX 2069, CALIFORNIA CITY, CA 93504-0069
PO BOX 2070, CALIFORNIA CITY, CA 93504-0070
PO BOX 2071, CALIFORNIA CITY, CA 93504-0071
PO BOX 2072, CALIFORNIA CITY, CA 93504-0072
PO BOX 2073, CALIFORNIA CITY, CA 93504-0073
PO BOX 2074, CALIFORNIA CITY, CA 93504-0074
PO BOX 2075, CALIFORNIA CITY, CA 93504-0075
PO BOX 2076, CALIFORNIA CITY, CA 93504-0076
PO BOX 2077, CALIFORNIA CITY, CA 93504-0077
PO BOX 2078, CALIFORNIA CITY, CA 93504-0078
PO BOX 2079, CALIFORNIA CITY, CA 93504-0079
PO BOX 2080, CALIFORNIA CITY, CA 93504-0080
PO BOX 2081, CALIFORNIA CITY, CA 93504-0081
PO BOX 2082, CALIFORNIA CITY, CA 93504-0082
PO BOX 2083, CALIFORNIA CITY, CA 93504-0083
PO BOX 2084, CALIFORNIA CITY, CA 93504-0084
PO BOX 2085, CALIFORNIA CITY, CA 93504-0085
PO BOX 2086, CALIFORNIA CITY, CA 93504-0086
PO BOX 2087, CALIFORNIA CITY, CA 93504-0087
PO BOX 2088, CALIFORNIA CITY, CA 93504-0088
PO BOX 2089, CALIFORNIA CITY, CA 93504-0089
PO BOX 2090, CALIFORNIA CITY, CA 93504-0090
PO BOX 2091, CALIFORNIA CITY, CA 93504-0091
PO BOX 2092, CALIFORNIA CITY, CA 93504-0092
PO BOX 2093, CALIFORNIA CITY, CA 93504-0093
PO BOX 2094, CALIFORNIA CITY, CA 93504-0094
PO BOX 2095, CALIFORNIA CITY, CA 93504-0095
PO BOX 2096, CALIFORNIA CITY, CA 93504-0096
PO BOX 2097, CALIFORNIA CITY, CA 93504-0097
PO BOX 2098, CALIFORNIA CITY, CA 93504-0098
PO BOX 2099, CALIFORNIA CITY, CA 93504-0099
PO BOX 2100, CALIFORNIA CITY, CA 93504-0100
PO BOX 2101, CALIFORNIA CITY, CA 93504-0101
PO BOX 2102, CALIFORNIA CITY, CA 93504-0102
PO BOX 2103, CALIFORNIA CITY, CA 93504-0103
PO BOX 2104, CALIFORNIA CITY, CA 93504-0104
PO BOX 2105, CALIFORNIA CITY, CA 93504-0105
PO BOX 2106, CALIFORNIA CITY, CA 93504-0106
PO BOX 2107, CALIFORNIA CITY, CA 93504-0107
PO BOX 2108, CALIFORNIA CITY, CA 93504-0108
PO BOX 2109, CALIFORNIA CITY, CA 93504-0109
PO BOX 2110, CALIFORNIA CITY, CA 93504-0110
PO BOX 2111, CALIFORNIA CITY, CA 93504-0111
PO BOX 2112, CALIFORNIA CITY, CA 93504-0112
PO BOX 2113, CALIFORNIA CITY, CA 93504-0113
PO BOX 2114, CALIFORNIA CITY, CA 93504-0114
PO BOX 2115, CALIFORNIA CITY, CA 93504-0115
PO BOX 2116, CALIFORNIA CITY, CA 93504-0116
PO BOX 2117, CALIFORNIA CITY, CA 93504-0117
PO BOX 2118, CALIFORNIA CITY, CA 93504-0118
PO BOX 2119, CALIFORNIA CITY, CA 93504-0119
PO BOX 2120, CALIFORNIA CITY, CA 93504-0120
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