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, BARRYVILLE, NY 12719-0121
PO BOX 122, BARRYVILLE, NY 12719-0122
PO BOX 123, BARRYVILLE, NY 12719-0123
PO BOX 124, BARRYVILLE, NY 12719-0124
PO BOX 125, BARRYVILLE, NY 12719-0125
PO BOX 126, BARRYVILLE, NY 12719-0126
PO BOX 127, BARRYVILLE, NY 12719-0127
PO BOX 128, BARRYVILLE, NY 12719-0128
PO BOX 129, BARRYVILLE, NY 12719-0129
PO BOX 130, BARRYVILLE, NY 12719-0130
PO BOX 131, BARRYVILLE, NY 12719-0131
PO BOX 132, BARRYVILLE, NY 12719-0132
PO BOX 133, BARRYVILLE, NY 12719-0133
PO BOX 134, BARRYVILLE, NY 12719-0134
PO BOX 135, BARRYVILLE, NY 12719-0135
PO BOX 136, BARRYVILLE, NY 12719-0136
PO BOX 137, BARRYVILLE, NY 12719-0137
PO BOX 138, BARRYVILLE, NY 12719-0138
PO BOX 139, BARRYVILLE, NY 12719-0139
PO BOX 140, BARRYVILLE, NY 12719-0140
PO BOX 141, BARRYVILLE, NY 12719-0141
PO BOX 142, BARRYVILLE, NY 12719-0142
PO BOX 143, BARRYVILLE, NY 12719-0143
PO BOX 144, BARRYVILLE, NY 12719-0144
PO BOX 145, BARRYVILLE, NY 12719-0145
PO BOX 146, BARRYVILLE, NY 12719-0146
PO BOX 147, BARRYVILLE, NY 12719-0147
PO BOX 148, BARRYVILLE, NY 12719-0148
PO BOX 149, BARRYVILLE, NY 12719-0149
PO BOX 150, BARRYVILLE, NY 12719-0150
PO BOX 151, BARRYVILLE, NY 12719-0151
PO BOX 152, BARRYVILLE, NY 12719-0152
PO BOX 153, BARRYVILLE, NY 12719-0153
PO BOX 154, BARRYVILLE, NY 12719-0154
PO BOX 155, BARRYVILLE, NY 12719-0155
PO BOX 156, BARRYVILLE, NY 12719-0156
PO BOX 157, BARRYVILLE, NY 12719-0157
PO BOX 158, BARRYVILLE, NY 12719-0158
PO BOX 159, BARRYVILLE, NY 12719-0159
PO BOX 160, BARRYVILLE, NY 12719-0160
PO BOX 161, BARRYVILLE, NY 12719-0161
PO BOX 162, BARRYVILLE, NY 12719-0162
PO BOX 163, BARRYVILLE, NY 12719-0163
PO BOX 164, BARRYVILLE, NY 12719-0164
PO BOX 165, BARRYVILLE, NY 12719-0165
PO BOX 166, BARRYVILLE, NY 12719-0166
PO BOX 167, BARRYVILLE, NY 12719-0167
PO BOX 168, BARRYVILLE, NY 12719-0168
PO BOX 169, BARRYVILLE, NY 12719-0169
PO BOX 170, BARRYVILLE, NY 12719-0170
PO BOX 171, BARRYVILLE, NY 12719-0171
PO BOX 172, BARRYVILLE, NY 12719-0172
PO BOX 173, BARRYVILLE, NY 12719-0173
PO BOX 174, BARRYVILLE, NY 12719-0174
PO BOX 175, BARRYVILLE, NY 12719-0175
PO BOX 176, BARRYVILLE, NY 12719-0176
PO BOX 177, BARRYVILLE, NY 12719-0177
PO BOX 178, BARRYVILLE, NY 12719-0178
PO BOX 179, BARRYVILLE, NY 12719-0179
PO BOX 180, BARRYVILLE, NY 12719-0180
PO BOX 181, BARRYVILLE, NY 12719-0181
PO BOX 182, BARRYVILLE, NY 12719-0182
PO BOX 183, BARRYVILLE, NY 12719-0183
PO BOX 184, BARRYVILLE, NY 12719-0184
PO BOX 185, BARRYVILLE, NY 12719-0185
PO BOX 186, BARRYVILLE, NY 12719-0186
PO BOX 187, BARRYVILLE, NY 12719-0187
PO BOX 188, BARRYVILLE, NY 12719-0188
PO BOX 189, BARRYVILLE, NY 12719-0189
PO BOX 190, BARRYVILLE, NY 12719-0190
PO BOX 191, BARRYVILLE, NY 12719-0191
PO BOX 192, BARRYVILLE, NY 12719-0192
PO BOX 193, BARRYVILLE, NY 12719-0193
PO BOX 194, BARRYVILLE, NY 12719-0194
PO BOX 195, BARRYVILLE, NY 12719-0195
PO BOX 196, BARRYVILLE, NY 12719-0196
PO BOX 197, BARRYVILLE, NY 12719-0197
PO BOX 198, BARRYVILLE, NY 12719-0198
PO BOX 199, BARRYVILLE, NY 12719-0199
PO BOX 200, BARRYVILLE, NY 12719-0200
PO BOX 201, BARRYVILLE, NY 12719-0201
PO BOX 202, BARRYVILLE, NY 12719-0202
PO BOX 203, BARRYVILLE, NY 12719-0203
PO BOX 204, BARRYVILLE, NY 12719-0204
PO BOX 205, BARRYVILLE, NY 12719-0205
PO BOX 206, BARRYVILLE, NY 12719-0206
PO BOX 207, BARRYVILLE, NY 12719-0207
PO BOX 208, BARRYVILLE, NY 12719-0208
PO BOX 209, BARRYVILLE, NY 12719-0209
PO BOX 210, BARRYVILLE, NY 12719-0210
PO BOX 211, BARRYVILLE, NY 12719-0211
PO BOX 212, BARRYVILLE, NY 12719-0212
PO BOX 213, BARRYVILLE, NY 12719-0213
PO BOX 214, BARRYVILLE, NY 12719-0214
PO BOX 215, BARRYVILLE, NY 12719-0215
PO BOX 216, BARRYVILLE, NY 12719-0216
PO BOX 217, BARRYVILLE, NY 12719-0217
PO BOX 218, BARRYVILLE, NY 12719-0218
PO BOX 219, BARRYVILLE, NY 12719-0219
PO BOX 220, BARRYVILLE, NY 12719-0220
PO BOX 221, BARRYVILLE, NY 12719-0221
PO BOX 222, BARRYVILLE, NY 12719-0222
PO BOX 223, BARRYVILLE, NY 12719-0223
PO BOX 224, BARRYVILLE, NY 12719-0224
PO BOX 225, BARRYVILLE, NY 12719-0225
PO BOX 226, BARRYVILLE, NY 12719-0226
PO BOX 227, BARRYVILLE, NY 12719-0227
PO BOX 228, BARRYVILLE, NY 12719-0228
PO BOX 229, BARRYVILLE, NY 12719-0229
PO BOX 230, BARRYVILLE, NY 12719-0230
PO BOX 231, BARRYVILLE, NY 12719-0231
PO BOX 232, BARRYVILLE, NY 12719-0232
PO BOX 233, BARRYVILLE, NY 12719-0233
PO BOX 234, BARRYVILLE, NY 12719-0234
PO BOX 235, BARRYVILLE, NY 12719-0235
PO BOX 236, BARRYVILLE, NY 12719-0236
PO BOX 237, BARRYVILLE, NY 12719-0237
PO BOX 238, BARRYVILLE, NY 12719-0238
PO BOX 239, BARRYVILLE, NY 12719-0239
PO BOX 240, BARRYVILLE, NY 12719-0240
PO BOX 241, BARRYVILLE, NY 12719-0241
PO BOX 242, BARRYVILLE, NY 12719-0242
PO BOX 243, BARRYVILLE, NY 12719-0243
PO BOX 244, BARRYVILLE, NY 12719-0244
PO BOX 245, BARRYVILLE, NY 12719-0245
PO BOX 246, BARRYVILLE, NY 12719-0246
PO BOX 247, BARRYVILLE, NY 12719-0247
PO BOX 248, BARRYVILLE, NY 12719-0248
PO BOX 249, BARRYVILLE, NY 12719-0249
PO BOX 250, BARRYVILLE, NY 12719-0250
PO BOX 251, BARRYVILLE, NY 12719-0251
PO BOX 252, BARRYVILLE, NY 12719-0252
PO BOX 253, BARRYVILLE, NY 12719-0253
PO BOX 254, BARRYVILLE, NY 12719-0254
PO BOX 255, BARRYVILLE, NY 12719-0255
PO BOX 256, BARRYVILLE, NY 12719-0256
PO BOX 257, BARRYVILLE, NY 12719-0257
PO BOX 258, BARRYVILLE, NY 12719-0258
PO BOX 259, BARRYVILLE, NY 12719-0259
PO BOX 260, BARRYVILLE, NY 12719-0260
PO BOX 261, BARRYVILLE, NY 12719-0261
PO BOX 262, BARRYVILLE, NY 12719-0262
PO BOX 263, BARRYVILLE, NY 12719-0263
PO BOX 264, BARRYVILLE, NY 12719-0264
PO BOX 265, BARRYVILLE, NY 12719-0265
PO BOX 266, BARRYVILLE, NY 12719-0266
PO BOX 267, BARRYVILLE, NY 12719-0267
PO BOX 268, BARRYVILLE, NY 12719-0268
PO BOX 269, BARRYVILLE, NY 12719-0269
PO BOX 270, BARRYVILLE, NY 12719-0270
PO BOX 271, BARRYVILLE, NY 12719-0271
PO BOX 272, BARRYVILLE, NY 12719-0272
PO BOX 273, BARRYVILLE, NY 12719-0273
PO BOX 274, BARRYVILLE, NY 12719-0274
PO BOX 275, BARRYVILLE, NY 12719-0275
PO BOX 276, BARRYVILLE, NY 12719-0276
PO BOX 277, BARRYVILLE, NY 12719-0277
PO BOX 278, BARRYVILLE, NY 12719-0278
PO BOX 279, BARRYVILLE, NY 12719-0279
PO BOX 280, BARRYVILLE, NY 12719-0280
PO BOX 281, BARRYVILLE, NY 12719-0281
PO BOX 282, BARRYVILLE, NY 12719-0282
PO BOX 283, BARRYVILLE, NY 12719-0283
PO BOX 284, BARRYVILLE, NY 12719-0284
PO BOX 285, BARRYVILLE, NY 12719-0285
PO BOX 286, BARRYVILLE, NY 12719-0286
PO BOX 287, BARRYVILLE, NY 12719-0287
PO BOX 288, BARRYVILLE, NY 12719-0288
PO BOX 289, BARRYVILLE, NY 12719-0289
PO BOX 290, BARRYVILLE, NY 12719-0290
PO BOX 291, BARRYVILLE, NY 12719-0291
PO BOX 292, BARRYVILLE, NY 12719-0292
PO BOX 293, BARRYVILLE, NY 12719-0293
PO BOX 294, BARRYVILLE, NY 12719-0294
PO BOX 295, BARRYVILLE, NY 12719-0295
PO BOX 296, BARRYVILLE, NY 12719-0296
PO BOX 297, BARRYVILLE, NY 12719-0297
PO BOX 298, BARRYVILLE, NY 12719-0298
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