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 121, NEW ENTERPRISE, PA 16664-0121
PO BOX 122, NEW ENTERPRISE, PA 16664-0122
PO BOX 123, NEW ENTERPRISE, PA 16664-0123
PO BOX 124, NEW ENTERPRISE, PA 16664-0124
PO BOX 125, NEW ENTERPRISE, PA 16664-0125
PO BOX 126, NEW ENTERPRISE, PA 16664-0126
PO BOX 127, NEW ENTERPRISE, PA 16664-0127
PO BOX 128, NEW ENTERPRISE, PA 16664-0128
PO BOX 129, NEW ENTERPRISE, PA 16664-0129
PO BOX 130, NEW ENTERPRISE, PA 16664-0130
PO BOX 131, NEW ENTERPRISE, PA 16664-0131
PO BOX 132, NEW ENTERPRISE, PA 16664-0132
PO BOX 133, NEW ENTERPRISE, PA 16664-0133
PO BOX 134, NEW ENTERPRISE, PA 16664-0134
PO BOX 135, NEW ENTERPRISE, PA 16664-0135
PO BOX 136, NEW ENTERPRISE, PA 16664-0136
PO BOX 137, NEW ENTERPRISE, PA 16664-0137
PO BOX 138, NEW ENTERPRISE, PA 16664-0138
PO BOX 139, NEW ENTERPRISE, PA 16664-0139
PO BOX 140, NEW ENTERPRISE, PA 16664-0140
PO BOX 141, NEW ENTERPRISE, PA 16664-0141
PO BOX 142, NEW ENTERPRISE, PA 16664-0142
PO BOX 143, NEW ENTERPRISE, PA 16664-0143
PO BOX 144, NEW ENTERPRISE, PA 16664-0144
PO BOX 145, NEW ENTERPRISE, PA 16664-0145
PO BOX 146, NEW ENTERPRISE, PA 16664-0146
PO BOX 147, NEW ENTERPRISE, PA 16664-0147
PO BOX 148, NEW ENTERPRISE, PA 16664-0148
PO BOX 149, NEW ENTERPRISE, PA 16664-0149
PO BOX 150, NEW ENTERPRISE, PA 16664-0150
PO BOX 151, NEW ENTERPRISE, PA 16664-0151
PO BOX 152, NEW ENTERPRISE, PA 16664-0152
PO BOX 153, NEW ENTERPRISE, PA 16664-0153
PO BOX 154, NEW ENTERPRISE, PA 16664-0154
PO BOX 155, NEW ENTERPRISE, PA 16664-0155
PO BOX 156, NEW ENTERPRISE, PA 16664-0156
PO BOX 157, NEW ENTERPRISE, PA 16664-0157
PO BOX 158, NEW ENTERPRISE, PA 16664-0158
PO BOX 159, NEW ENTERPRISE, PA 16664-0159
PO BOX 160, NEW ENTERPRISE, PA 16664-0160
PO BOX 161, NEW ENTERPRISE, PA 16664-0161
PO BOX 162, NEW ENTERPRISE, PA 16664-0162
PO BOX 163, NEW ENTERPRISE, PA 16664-0163
PO BOX 164, NEW ENTERPRISE, PA 16664-0164
PO BOX 165, NEW ENTERPRISE, PA 16664-0165
PO BOX 166, NEW ENTERPRISE, PA 16664-0166
PO BOX 167, NEW ENTERPRISE, PA 16664-0167
PO BOX 168, NEW ENTERPRISE, PA 16664-0168
PO BOX 169, NEW ENTERPRISE, PA 16664-0169
PO BOX 170, NEW ENTERPRISE, PA 16664-0170
PO BOX 171, NEW ENTERPRISE, PA 16664-0171
PO BOX 172, NEW ENTERPRISE, PA 16664-0172
PO BOX 173, NEW ENTERPRISE, PA 16664-0173
PO BOX 174, NEW ENTERPRISE, PA 16664-0174
PO BOX 175, NEW ENTERPRISE, PA 16664-0175
PO BOX 176, NEW ENTERPRISE, PA 16664-0176
PO BOX 177, NEW ENTERPRISE, PA 16664-0177
PO BOX 178, NEW ENTERPRISE, PA 16664-0178
PO BOX 179, NEW ENTERPRISE, PA 16664-0179
PO BOX 180, NEW ENTERPRISE, PA 16664-0180
PO BOX 181, NEW ENTERPRISE, PA 16664-0181
PO BOX 182, NEW ENTERPRISE, PA 16664-0182
PO BOX 183, NEW ENTERPRISE, PA 16664-0183
PO BOX 184, NEW ENTERPRISE, PA 16664-0184
PO BOX 185, NEW ENTERPRISE, PA 16664-0185
PO BOX 186, NEW ENTERPRISE, PA 16664-0186
PO BOX 187, NEW ENTERPRISE, PA 16664-0187
PO BOX 188, NEW ENTERPRISE, PA 16664-0188
PO BOX 189, NEW ENTERPRISE, PA 16664-0189
PO BOX 190, NEW ENTERPRISE, PA 16664-0190
PO BOX 191, NEW ENTERPRISE, PA 16664-0191
PO BOX 192, NEW ENTERPRISE, PA 16664-0192
PO BOX 193, NEW ENTERPRISE, PA 16664-0193
PO BOX 194, NEW ENTERPRISE, PA 16664-0194
PO BOX 195, NEW ENTERPRISE, PA 16664-0195
PO BOX 196, NEW ENTERPRISE, PA 16664-0196
PO BOX 197, NEW ENTERPRISE, PA 16664-0197
PO BOX 198, NEW ENTERPRISE, PA 16664-0198
PO BOX 199, NEW ENTERPRISE, PA 16664-0199
PO BOX 200, NEW ENTERPRISE, PA 16664-0200
PO BOX 201, NEW ENTERPRISE, PA 16664-0201
PO BOX 202, NEW ENTERPRISE, PA 16664-0202
PO BOX 203, NEW ENTERPRISE, PA 16664-0203
PO BOX 204, NEW ENTERPRISE, PA 16664-0204
PO BOX 205, NEW ENTERPRISE, PA 16664-0205
PO BOX 206, NEW ENTERPRISE, PA 16664-0206
PO BOX 207, NEW ENTERPRISE, PA 16664-0207
PO BOX 208, NEW ENTERPRISE, PA 16664-0208
PO BOX 209, NEW ENTERPRISE, PA 16664-0209
PO BOX 210, NEW ENTERPRISE, PA 16664-0210
PO BOX 211, NEW ENTERPRISE, PA 16664-0211
PO BOX 212, NEW ENTERPRISE, PA 16664-0212
PO BOX 213, NEW ENTERPRISE, PA 16664-0213
PO BOX 214, NEW ENTERPRISE, PA 16664-0214
PO BOX 215, NEW ENTERPRISE, PA 16664-0215
PO BOX 216, NEW ENTERPRISE, PA 16664-0216
PO BOX 217, NEW ENTERPRISE, PA 16664-0217
PO BOX 218, NEW ENTERPRISE, PA 16664-0218
PO BOX 219, NEW ENTERPRISE, PA 16664-0219
PO BOX 220, NEW ENTERPRISE, PA 16664-0220
PO BOX 221, NEW ENTERPRISE, PA 16664-0221
PO BOX 222, NEW ENTERPRISE, PA 16664-0222
PO BOX 223, NEW ENTERPRISE, PA 16664-0223
PO BOX 224, NEW ENTERPRISE, PA 16664-0224
PO BOX 225, NEW ENTERPRISE, PA 16664-0225
PO BOX 226, NEW ENTERPRISE, PA 16664-0226
PO BOX 227, NEW ENTERPRISE, PA 16664-0227
PO BOX 228, NEW ENTERPRISE, PA 16664-0228
PO BOX 229, NEW ENTERPRISE, PA 16664-0229
PO BOX 230, NEW ENTERPRISE, PA 16664-0230
PO BOX 231, NEW ENTERPRISE, PA 16664-0231
PO BOX 232, NEW ENTERPRISE, PA 16664-0232
PO BOX 233, NEW ENTERPRISE, PA 16664-0233
PO BOX 234, NEW ENTERPRISE, PA 16664-0234
PO BOX 235, NEW ENTERPRISE, PA 16664-0235
PO BOX 236, NEW ENTERPRISE, PA 16664-0236
PO BOX 237, NEW ENTERPRISE, PA 16664-0237
PO BOX 238, NEW ENTERPRISE, PA 16664-0238
PO BOX 239, NEW ENTERPRISE, PA 16664-0239
PO BOX 240, NEW ENTERPRISE, PA 16664-0240
PO BOX 241, NEW ENTERPRISE, PA 16664-0241
PO BOX 242, NEW ENTERPRISE, PA 16664-0242
PO BOX 243, NEW ENTERPRISE, PA 16664-0243
PO BOX 244, NEW ENTERPRISE, PA 16664-0244
PO BOX 245, NEW ENTERPRISE, PA 16664-0245
PO BOX 246, NEW ENTERPRISE, PA 16664-0246
PO BOX 247, NEW ENTERPRISE, PA 16664-0247
PO BOX 248, NEW ENTERPRISE, PA 16664-0248
PO BOX 249, NEW ENTERPRISE, PA 16664-0249
PO BOX 250, NEW ENTERPRISE, PA 16664-0250
PO BOX 251, NEW ENTERPRISE, PA 16664-0251
PO BOX 252, NEW ENTERPRISE, PA 16664-0252
PO BOX 253, NEW ENTERPRISE, PA 16664-0253
PO BOX 254, NEW ENTERPRISE, PA 16664-0254
PO BOX 255, NEW ENTERPRISE, PA 16664-0255
PO BOX 256, NEW ENTERPRISE, PA 16664-0256
PO BOX 257, NEW ENTERPRISE, PA 16664-0257
PO BOX 258, NEW ENTERPRISE, PA 16664-0258
PO BOX 259, NEW ENTERPRISE, PA 16664-0259
PO BOX 260, NEW ENTERPRISE, PA 16664-0260
PO BOX 261, NEW ENTERPRISE, PA 16664-0261
PO BOX 262, NEW ENTERPRISE, PA 16664-0262
PO BOX 263, NEW ENTERPRISE, PA 16664-0263
PO BOX 264, NEW ENTERPRISE, PA 16664-0264
PO BOX 265, NEW ENTERPRISE, PA 16664-0265
PO BOX 266, NEW ENTERPRISE, PA 16664-0266
PO BOX 267, NEW ENTERPRISE, PA 16664-0267
PO BOX 268, NEW ENTERPRISE, PA 16664-0268
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