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 1, MC CONNELLSTOWN, PA 16660-0001
PO BOX 2, MC CONNELLSTOWN, PA 16660-0002
PO BOX 3, MC CONNELLSTOWN, PA 16660-0003
PO BOX 4, MC CONNELLSTOWN, PA 16660-0004
PO BOX 5, MC CONNELLSTOWN, PA 16660-0005
PO BOX 6, MC CONNELLSTOWN, PA 16660-0006
PO BOX 7, MC CONNELLSTOWN, PA 16660-0007
PO BOX 8, MC CONNELLSTOWN, PA 16660-0008
PO BOX 9, MC CONNELLSTOWN, PA 16660-0009
PO BOX 10, MC CONNELLSTOWN, PA 16660-0010
PO BOX 11, MC CONNELLSTOWN, PA 16660-0011
PO BOX 12, MC CONNELLSTOWN, PA 16660-0012
PO BOX 13, MC CONNELLSTOWN, PA 16660-0013
PO BOX 14, MC CONNELLSTOWN, PA 16660-0014
PO BOX 15, MC CONNELLSTOWN, PA 16660-0015
PO BOX 16, MC CONNELLSTOWN, PA 16660-0016
PO BOX 17, MC CONNELLSTOWN, PA 16660-0017
PO BOX 18, MC CONNELLSTOWN, PA 16660-0018
PO BOX 19, MC CONNELLSTOWN, PA 16660-0019
PO BOX 20, MC CONNELLSTOWN, PA 16660-0020
PO BOX 21, MC CONNELLSTOWN, PA 16660-0021
PO BOX 22, MC CONNELLSTOWN, PA 16660-0022
PO BOX 23, MC CONNELLSTOWN, PA 16660-0023
PO BOX 24, MC CONNELLSTOWN, PA 16660-0024
PO BOX 25, MC CONNELLSTOWN, PA 16660-0025
PO BOX 26, MC CONNELLSTOWN, PA 16660-0026
PO BOX 27, MC CONNELLSTOWN, PA 16660-0027
PO BOX 28, MC CONNELLSTOWN, PA 16660-0028
PO BOX 29, MC CONNELLSTOWN, PA 16660-0029
PO BOX 30, MC CONNELLSTOWN, PA 16660-0030
PO BOX 31, MC CONNELLSTOWN, PA 16660-0031
PO BOX 32, MC CONNELLSTOWN, PA 16660-0032
PO BOX 33, MC CONNELLSTOWN, PA 16660-0033
PO BOX 34, MC CONNELLSTOWN, PA 16660-0034
PO BOX 35, MC CONNELLSTOWN, PA 16660-0035
PO BOX 36, MC CONNELLSTOWN, PA 16660-0036
PO BOX 37, MC CONNELLSTOWN, PA 16660-0037
PO BOX 38, MC CONNELLSTOWN, PA 16660-0038
PO BOX 39, MC CONNELLSTOWN, PA 16660-0039
PO BOX 40, MC CONNELLSTOWN, PA 16660-0040
PO BOX 41, MC CONNELLSTOWN, PA 16660-0041
PO BOX 42, MC CONNELLSTOWN, PA 16660-0042
PO BOX 43, MC CONNELLSTOWN, PA 16660-0043
PO BOX 44, MC CONNELLSTOWN, PA 16660-0044
PO BOX 45, MC CONNELLSTOWN, PA 16660-0045
PO BOX 46, MC CONNELLSTOWN, PA 16660-0046
PO BOX 47, MC CONNELLSTOWN, PA 16660-0047
PO BOX 48, MC CONNELLSTOWN, PA 16660-0048
PO BOX 49, MC CONNELLSTOWN, PA 16660-0049
PO BOX 50, MC CONNELLSTOWN, PA 16660-0050
PO BOX 51, MC CONNELLSTOWN, PA 16660-0051
PO BOX 52, MC CONNELLSTOWN, PA 16660-0052
PO BOX 53, MC CONNELLSTOWN, PA 16660-0053
PO BOX 54, MC CONNELLSTOWN, PA 16660-0054
PO BOX 55, MC CONNELLSTOWN, PA 16660-0055
PO BOX 56, MC CONNELLSTOWN, PA 16660-0056
PO BOX 57, MC CONNELLSTOWN, PA 16660-0057
PO BOX 58, MC CONNELLSTOWN, PA 16660-0058
PO BOX 59, MC CONNELLSTOWN, PA 16660-0059
PO BOX 60, MC CONNELLSTOWN, PA 16660-0060
PO BOX 61, MC CONNELLSTOWN, PA 16660-0061
PO BOX 62, MC CONNELLSTOWN, PA 16660-0062
PO BOX 63, MC CONNELLSTOWN, PA 16660-0063
PO BOX 64, MC CONNELLSTOWN, PA 16660-0064
PO BOX 65, MC CONNELLSTOWN, PA 16660-0065
PO BOX 66, MC CONNELLSTOWN, PA 16660-0066
PO BOX 67, MC CONNELLSTOWN, PA 16660-0067
PO BOX 68, MC CONNELLSTOWN, PA 16660-0068
PO BOX 69, MC CONNELLSTOWN, PA 16660-0069
PO BOX 70, MC CONNELLSTOWN, PA 16660-0070
PO BOX 71, MC CONNELLSTOWN, PA 16660-0071
PO BOX 72, MC CONNELLSTOWN, PA 16660-0072
PO BOX 73, MC CONNELLSTOWN, PA 16660-0073
PO BOX 74, MC CONNELLSTOWN, PA 16660-0074
PO BOX 75, MC CONNELLSTOWN, PA 16660-0075
PO BOX 76, MC CONNELLSTOWN, PA 16660-0076
PO BOX 77, MC CONNELLSTOWN, PA 16660-0077
PO BOX 78, MC CONNELLSTOWN, PA 16660-0078
PO BOX 79, MC CONNELLSTOWN, PA 16660-0079
PO BOX 80, MC CONNELLSTOWN, PA 16660-0080
PO BOX 81, MC CONNELLSTOWN, PA 16660-0081
PO BOX 82, MC CONNELLSTOWN, PA 16660-0082
PO BOX 83, MC CONNELLSTOWN, PA 16660-0083
PO BOX 84, MC CONNELLSTOWN, PA 16660-0084
PO BOX 85, MC CONNELLSTOWN, PA 16660-0085
PO BOX 86, MC CONNELLSTOWN, PA 16660-0086
PO BOX 87, MC CONNELLSTOWN, PA 16660-0087
PO BOX 88, MC CONNELLSTOWN, PA 16660-0088
PO BOX 89, MC CONNELLSTOWN, PA 16660-0089
PO BOX 90, MC CONNELLSTOWN, PA 16660-0090
PO BOX 91, MC CONNELLSTOWN, PA 16660-0091
PO BOX 92, MC CONNELLSTOWN, PA 16660-0092
PO BOX 93, MC CONNELLSTOWN, PA 16660-0093
PO BOX 94, MC CONNELLSTOWN, PA 16660-0094
PO BOX 95, MC CONNELLSTOWN, PA 16660-0095
PO BOX 96, MC CONNELLSTOWN, PA 16660-0096
PO BOX 97, MC CONNELLSTOWN, PA 16660-0097
PO BOX 98, MC CONNELLSTOWN, PA 16660-0098
PO BOX 99, MC CONNELLSTOWN, PA 16660-0099
PO BOX 100, MC CONNELLSTOWN, PA 16660-0100
PO BOX 101, MC CONNELLSTOWN, PA 16660-0101
PO BOX 102, MC CONNELLSTOWN, PA 16660-0102
PO BOX 103, MC CONNELLSTOWN, PA 16660-0103
PO BOX 104, MC CONNELLSTOWN, PA 16660-0104
PO BOX 105, MC CONNELLSTOWN, PA 16660-0105
PO BOX 106, MC CONNELLSTOWN, PA 16660-0106
PO BOX 107, MC CONNELLSTOWN, PA 16660-0107
PO BOX 108, MC CONNELLSTOWN, PA 16660-0108
PO BOX 109, MC CONNELLSTOWN, PA 16660-0109
PO BOX 110, MC CONNELLSTOWN, PA 16660-0110
PO BOX 111, MC CONNELLSTOWN, PA 16660-0111
PO BOX 112, MC CONNELLSTOWN, PA 16660-0112
PO BOX 113, MC CONNELLSTOWN, PA 16660-0113
PO BOX 114, MC CONNELLSTOWN, PA 16660-0114
PO BOX 115, MC CONNELLSTOWN, PA 16660-0115
PO BOX 116, MC CONNELLSTOWN, PA 16660-0116
PO BOX 117, MC CONNELLSTOWN, PA 16660-0117
PO BOX 118, MC CONNELLSTOWN, PA 16660-0118
PO BOX 119, MC CONNELLSTOWN, PA 16660-0119
PO BOX 120, MC CONNELLSTOWN, PA 16660-0120
PO BOX 121, MC CONNELLSTOWN, PA 16660-0121
PO BOX 122, MC CONNELLSTOWN, PA 16660-0122
PO BOX 123, MC CONNELLSTOWN, PA 16660-0123
PO BOX 124, MC CONNELLSTOWN, PA 16660-0124
PO BOX 125, MC CONNELLSTOWN, PA 16660-0125
PO BOX 126, MC CONNELLSTOWN, PA 16660-0126
PO BOX 127, MC CONNELLSTOWN, PA 16660-0127
PO BOX 128, MC CONNELLSTOWN, PA 16660-0128
PO BOX 129, MC CONNELLSTOWN, PA 16660-0129
PO BOX 130, MC CONNELLSTOWN, PA 16660-0130
PO BOX 131, MC CONNELLSTOWN, PA 16660-0131
PO BOX 132, MC CONNELLSTOWN, PA 16660-0132
PO BOX 133, MC CONNELLSTOWN, PA 16660-0133
PO BOX 134, MC CONNELLSTOWN, PA 16660-0134
PO BOX 135, MC CONNELLSTOWN, PA 16660-0135
PO BOX 136, MC CONNELLSTOWN, PA 16660-0136
PO BOX 137, MC CONNELLSTOWN, PA 16660-0137
PO BOX 138, MC CONNELLSTOWN, PA 16660-0138
PO BOX 139, MC CONNELLSTOWN, PA 16660-0139
PO BOX 140, MC CONNELLSTOWN, PA 16660-0140
PO BOX 141, MC CONNELLSTOWN, PA 16660-0141
PO BOX 142, MC CONNELLSTOWN, PA 16660-0142
PO BOX 143, MC CONNELLSTOWN, PA 16660-0143
PO BOX 144, MC CONNELLSTOWN, PA 16660-0144
PO BOX 145, MC CONNELLSTOWN, PA 16660-0145
PO BOX 146, MC CONNELLSTOWN, PA 16660-0146
PO BOX 147, MC CONNELLSTOWN, PA 16660-0147
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