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 951969, DALLAS, TX 75395-1969
PO BOX 951970, DALLAS, TX 75395-1970
PO BOX 951971, DALLAS, TX 75395-1971
PO BOX 951972, DALLAS, TX 75395-1972
PO BOX 951973, DALLAS, TX 75395-1973
PO BOX 951974, DALLAS, TX 75395-1974
PO BOX 951975, DALLAS, TX 75395-1975
PO BOX 951976, DALLAS, TX 75395-1976
PO BOX 951977, DALLAS, TX 75395-1977
PO BOX 951978, DALLAS, TX 75395-1978
PO BOX 951979, DALLAS, TX 75395-1979
PO BOX 951980, DALLAS, TX 75395-1980
PO BOX 951981, DALLAS, TX 75395-1981
PO BOX 951982, DALLAS, TX 75395-1982
PO BOX 951983, DALLAS, TX 75395-1983
PO BOX 951984, DALLAS, TX 75395-1984
PO BOX 951985, DALLAS, TX 75395-1985
PO BOX 951986, DALLAS, TX 75395-1986
PO BOX 951987, DALLAS, TX 75395-1987
PO BOX 951988, DALLAS, TX 75395-1988
PO BOX 951989, DALLAS, TX 75395-1989
PO BOX 951990, DALLAS, TX 75395-1990
PO BOX 951991, DALLAS, TX 75395-1991
PO BOX 951992, DALLAS, TX 75395-1992
PO BOX 951993, DALLAS, TX 75395-1993
PO BOX 951994, DALLAS, TX 75395-1994
PO BOX 951995, DALLAS, TX 75395-1995
PO BOX 951996, DALLAS, TX 75395-1996
PO BOX 951997, DALLAS, TX 75395-1997
PO BOX 951998, DALLAS, TX 75395-1998
PO BOX 951999, DALLAS, TX 75395-1999
PO BOX 952000, DALLAS, TX 75395-2000
PO BOX 952001, DALLAS, TX 75395-2001
PO BOX 952002, DALLAS, TX 75395-2002
PO BOX 952003, DALLAS, TX 75395-2003
PO BOX 952004, DALLAS, TX 75395-2004
PO BOX 952005, DALLAS, TX 75395-2005
PO BOX 952006, DALLAS, TX 75395-2006
PO BOX 952007, DALLAS, TX 75395-2007
PO BOX 952008, DALLAS, TX 75395-2008
PO BOX 952009, DALLAS, TX 75395-2009
PO BOX 952010, DALLAS, TX 75395-2010
PO BOX 952011, DALLAS, TX 75395-2011
PO BOX 952012, DALLAS, TX 75395-2012
PO BOX 952013, DALLAS, TX 75395-2013
PO BOX 952014, DALLAS, TX 75395-2014
PO BOX 952015, DALLAS, TX 75395-2015
PO BOX 952016, DALLAS, TX 75395-2016
PO BOX 952017, DALLAS, TX 75395-2017
PO BOX 952018, DALLAS, TX 75395-2018
PO BOX 952019, DALLAS, TX 75395-2019
PO BOX 952020, DALLAS, TX 75395-2020
PO BOX 952021, DALLAS, TX 75395-2021
PO BOX 952022, DALLAS, TX 75395-2022
PO BOX 952023, DALLAS, TX 75395-2023
PO BOX 952024, DALLAS, TX 75395-2024
PO BOX 952025, DALLAS, TX 75395-2025
PO BOX 952026, DALLAS, TX 75395-2026
PO BOX 952027, DALLAS, TX 75395-2027
PO BOX 952028, DALLAS, TX 75395-2028
PO BOX 952029, DALLAS, TX 75395-2029
PO BOX 952030, DALLAS, TX 75395-2030
PO BOX 952031, DALLAS, TX 75395-2031
PO BOX 952032, DALLAS, TX 75395-2032
PO BOX 952033, DALLAS, TX 75395-2033
PO BOX 952034, DALLAS, TX 75395-2034
PO BOX 952035, DALLAS, TX 75395-2035
PO BOX 952036, DALLAS, TX 75395-2036
PO BOX 952037, DALLAS, TX 75395-2037
PO BOX 952038, DALLAS, TX 75395-2038
PO BOX 952039, DALLAS, TX 75395-2039
PO BOX 952040, DALLAS, TX 75395-2040
PO BOX 952041, DALLAS, TX 75395-2041
PO BOX 952042, DALLAS, TX 75395-2042
PO BOX 952043, DALLAS, TX 75395-2043
PO BOX 952044, DALLAS, TX 75395-2044
PO BOX 952045, DALLAS, TX 75395-2045
PO BOX 952046, DALLAS, TX 75395-2046
PO BOX 952047, DALLAS, TX 75395-2047
PO BOX 952048, DALLAS, TX 75395-2048
PO BOX 952049, DALLAS, TX 75395-2049
PO BOX 952050, DALLAS, TX 75395-2050
PO BOX 952051, DALLAS, TX 75395-2051
PO BOX 952052, DALLAS, TX 75395-2052
PO BOX 952053, DALLAS, TX 75395-2053
PO BOX 952054, DALLAS, TX 75395-2054
PO BOX 952055, DALLAS, TX 75395-2055
PO BOX 952056, DALLAS, TX 75395-2056
PO BOX 952057, DALLAS, TX 75395-2057
PO BOX 952058, DALLAS, TX 75395-2058
PO BOX 952059, DALLAS, TX 75395-2059
PO BOX 952060, DALLAS, TX 75395-2060
PO BOX 952061, DALLAS, TX 75395-2061
PO BOX 952062, DALLAS, TX 75395-2062
PO BOX 952063, DALLAS, TX 75395-2063
PO BOX 952064, DALLAS, TX 75395-2064
PO BOX 952065, DALLAS, TX 75395-2065
PO BOX 952066, DALLAS, TX 75395-2066
PO BOX 952067, DALLAS, TX 75395-2067
PO BOX 952068, DALLAS, TX 75395-2068
PO BOX 952069, DALLAS, TX 75395-2069
PO BOX 952070, DALLAS, TX 75395-2070
PO BOX 952071, DALLAS, TX 75395-2071
PO BOX 952072, DALLAS, TX 75395-2072
PO BOX 952073, DALLAS, TX 75395-2073
PO BOX 952074, DALLAS, TX 75395-2074
PO BOX 952075, DALLAS, TX 75395-2075
PO BOX 952076, DALLAS, TX 75395-2076
PO BOX 952077, DALLAS, TX 75395-2077
PO BOX 952078, DALLAS, TX 75395-2078
PO BOX 952079, DALLAS, TX 75395-2079
PO BOX 952080, DALLAS, TX 75395-2080
PO BOX 952081, DALLAS, TX 75395-2081
PO BOX 952082, DALLAS, TX 75395-2082
PO BOX 952083, DALLAS, TX 75395-2083
PO BOX 952084, DALLAS, TX 75395-2084
PO BOX 952085, DALLAS, TX 75395-2085
PO BOX 952086, DALLAS, TX 75395-2086
PO BOX 952087, DALLAS, TX 75395-2087
PO BOX 952088, DALLAS, TX 75395-2088
PO BOX 952089, DALLAS, TX 75395-2089
PO BOX 952090, DALLAS, TX 75395-2090
PO BOX 952091, DALLAS, TX 75395-2091
PO BOX 952092, DALLAS, TX 75395-2092
PO BOX 952093, DALLAS, TX 75395-2093
PO BOX 952094, DALLAS, TX 75395-2094
PO BOX 952095, DALLAS, TX 75395-2095
PO BOX 952096, DALLAS, TX 75395-2096
PO BOX 952097, DALLAS, TX 75395-2097
PO BOX 952098, DALLAS, TX 75395-2098
PO BOX 952099, DALLAS, TX 75395-2099
PO BOX 952100, DALLAS, TX 75395-2100
PO BOX 952101, DALLAS, TX 75395-2101
PO BOX 952102, DALLAS, TX 75395-2102
PO BOX 952103, DALLAS, TX 75395-2103
PO BOX 952104, DALLAS, TX 75395-2104
PO BOX 952105, DALLAS, TX 75395-2105
PO BOX 952106, DALLAS, TX 75395-2106
PO BOX 952107, DALLAS, TX 75395-2107
PO BOX 952108, DALLAS, TX 75395-2108
PO BOX 952109, DALLAS, TX 75395-2109
PO BOX 952110, DALLAS, TX 75395-2110
PO BOX 952111, DALLAS, TX 75395-2111
PO BOX 952112, DALLAS, TX 75395-2112
PO BOX 952113, DALLAS, TX 75395-2113
PO BOX 952114, DALLAS, TX 75395-2114
PO BOX 952115, DALLAS, TX 75395-2115
PO BOX 952116, DALLAS, TX 75395-2116
PO BOX 952117, DALLAS, TX 75395-2117
PO BOX 952118, DALLAS, TX 75395-2118
PO BOX 952119, DALLAS, TX 75395-2119
PO BOX 952120, DALLAS, TX 75395-2120
PO BOX 952121, DALLAS, TX 75395-2121
PO BOX 952122, DALLAS, TX 75395-2122
PO BOX 952123, DALLAS, TX 75395-2123
PO BOX 952124, DALLAS, TX 75395-2124
PO BOX 952125, DALLAS, TX 75395-2125
PO BOX 952126, DALLAS, TX 75395-2126
PO BOX 952127, DALLAS, TX 75395-2127
PO BOX 952128, DALLAS, TX 75395-2128
PO BOX 952129, DALLAS, TX 75395-2129
PO BOX 952130, DALLAS, TX 75395-2130
PO BOX 952131, DALLAS, TX 75395-2131
PO BOX 952132, DALLAS, TX 75395-2132
PO BOX 952133, DALLAS, TX 75395-2133
PO BOX 952134, DALLAS, TX 75395-2134
PO BOX 952135, DALLAS, TX 75395-2135
PO BOX 952136, DALLAS, TX 75395-2136
PO BOX 952137, DALLAS, TX 75395-2137
PO BOX 952138, DALLAS, TX 75395-2138
PO BOX 952139, DALLAS, TX 75395-2139
PO BOX 952140, DALLAS, TX 75395-2140
PO BOX 952141, DALLAS, TX 75395-2141
PO BOX 952142, DALLAS, TX 75395-2142
PO BOX 952143, DALLAS, TX 75395-2143
PO BOX 952144, DALLAS, TX 75395-2144
PO BOX 952145, DALLAS, TX 75395-2145
PO BOX 952146, DALLAS, TX 75395-2146
PO BOX 952147, DALLAS, TX 75395-2147
PO BOX 952148, DALLAS, TX 75395-2148
PO BOX 952149, DALLAS, TX 75395-2149
PO BOX 952150, DALLAS, TX 75395-2150
PO BOX 952151, DALLAS, TX 75395-2151
PO BOX 952152, DALLAS, TX 75395-2152
PO BOX 952153, DALLAS, TX 75395-2153
PO BOX 952154, DALLAS, TX 75395-2154
PO BOX 952155, DALLAS, TX 75395-2155
PO BOX 952156, DALLAS, TX 75395-2156
PO BOX 952157, DALLAS, TX 75395-2157
PO BOX 952158, DALLAS, TX 75395-2158
PO BOX 952159, DALLAS, TX 75395-2159
PO BOX 952160, DALLAS, TX 75395-2160
PO BOX 952161, DALLAS, TX 75395-2161
PO BOX 952162, DALLAS, TX 75395-2162
PO BOX 952163, DALLAS, TX 75395-2163
PO BOX 952164, DALLAS, TX 75395-2164
PO BOX 952165, DALLAS, TX 75395-2165
PO BOX 952166, DALLAS, TX 75395-2166
PO BOX 952167, DALLAS, TX 75395-2167
PO BOX 952168, DALLAS, TX 75395-2168
PO BOX 952169, DALLAS, TX 75395-2169
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