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 161, HIGHGATE SPRINGS, VT 05460-0161
PO BOX 162, HIGHGATE SPRINGS, VT 05460-0162
PO BOX 163, HIGHGATE SPRINGS, VT 05460-0163
PO BOX 164, HIGHGATE SPRINGS, VT 05460-0164
PO BOX 165, HIGHGATE SPRINGS, VT 05460-0165
PO BOX 166, HIGHGATE SPRINGS, VT 05460-0166
PO BOX 167, HIGHGATE SPRINGS, VT 05460-0167
PO BOX 168, HIGHGATE SPRINGS, VT 05460-0168
PO BOX 169, HIGHGATE SPRINGS, VT 05460-0169
PO BOX 170, HIGHGATE SPRINGS, VT 05460-0170
PO BOX 171, HIGHGATE SPRINGS, VT 05460-0171
PO BOX 172, HIGHGATE SPRINGS, VT 05460-0172
PO BOX 173, HIGHGATE SPRINGS, VT 05460-0173
PO BOX 174, HIGHGATE SPRINGS, VT 05460-0174
PO BOX 175, HIGHGATE SPRINGS, VT 05460-0175
PO BOX 176, HIGHGATE SPRINGS, VT 05460-0176
PO BOX 177, HIGHGATE SPRINGS, VT 05460-0177
PO BOX 178, HIGHGATE SPRINGS, VT 05460-0178
PO BOX 179, HIGHGATE SPRINGS, VT 05460-0179
PO BOX 180, HIGHGATE SPRINGS, VT 05460-0180
PO BOX 181, HIGHGATE SPRINGS, VT 05460-0181
PO BOX 182, HIGHGATE SPRINGS, VT 05460-0182
PO BOX 183, HIGHGATE SPRINGS, VT 05460-0183
PO BOX 184, HIGHGATE SPRINGS, VT 05460-0184
PO BOX 185, HIGHGATE SPRINGS, VT 05460-0185
PO BOX 186, HIGHGATE SPRINGS, VT 05460-0186
PO BOX 187, HIGHGATE SPRINGS, VT 05460-0187
PO BOX 188, HIGHGATE SPRINGS, VT 05460-0188
PO BOX 189, HIGHGATE SPRINGS, VT 05460-0189
PO BOX 190, HIGHGATE SPRINGS, VT 05460-0190
PO BOX 191, HIGHGATE SPRINGS, VT 05460-0191
PO BOX 192, HIGHGATE SPRINGS, VT 05460-0192
PO BOX 193, HIGHGATE SPRINGS, VT 05460-0193
PO BOX 194, HIGHGATE SPRINGS, VT 05460-0194
PO BOX 195, HIGHGATE SPRINGS, VT 05460-0195
PO BOX 196, HIGHGATE SPRINGS, VT 05460-0196
PO BOX 197, HIGHGATE SPRINGS, VT 05460-0197
PO BOX 198, HIGHGATE SPRINGS, VT 05460-0198
PO BOX 199, HIGHGATE SPRINGS, VT 05460-0199
PO BOX 200, HIGHGATE SPRINGS, VT 05460-0200
PO BOX 201, HIGHGATE SPRINGS, VT 05460-0201
PO BOX 202, HIGHGATE SPRINGS, VT 05460-0202
PO BOX 203, HIGHGATE SPRINGS, VT 05460-0203
PO BOX 204, HIGHGATE SPRINGS, VT 05460-0204
PO BOX 205, HIGHGATE SPRINGS, VT 05460-0205
PO BOX 206, HIGHGATE SPRINGS, VT 05460-0206
PO BOX 207, HIGHGATE SPRINGS, VT 05460-0207
PO BOX 208, HIGHGATE SPRINGS, VT 05460-0208
PO BOX 209, HIGHGATE SPRINGS, VT 05460-0209
PO BOX 210, HIGHGATE SPRINGS, VT 05460-0210
PO BOX 211, HIGHGATE SPRINGS, VT 05460-0211
PO BOX 212, HIGHGATE SPRINGS, VT 05460-0212
PO BOX 213, HIGHGATE SPRINGS, VT 05460-0213
PO BOX 214, HIGHGATE SPRINGS, VT 05460-0214
PO BOX 215, HIGHGATE SPRINGS, VT 05460-0215
PO BOX 216, HIGHGATE SPRINGS, VT 05460-0216
PO BOX 217, HIGHGATE SPRINGS, VT 05460-0217
PO BOX 218, HIGHGATE SPRINGS, VT 05460-0218
PO BOX 219, HIGHGATE SPRINGS, VT 05460-0219
PO BOX 220, HIGHGATE SPRINGS, VT 05460-0220
PO BOX 221, HIGHGATE SPRINGS, VT 05460-0221
PO BOX 222, HIGHGATE SPRINGS, VT 05460-0222
PO BOX 223, HIGHGATE SPRINGS, VT 05460-0223
PO BOX 224, HIGHGATE SPRINGS, VT 05460-0224
PO BOX 225, HIGHGATE SPRINGS, VT 05460-0225
PO BOX 226, HIGHGATE SPRINGS, VT 05460-0226
PO BOX 227, HIGHGATE SPRINGS, VT 05460-0227
PO BOX 228, HIGHGATE SPRINGS, VT 05460-0228
PO BOX 229, HIGHGATE SPRINGS, VT 05460-0229
PO BOX 230, HIGHGATE SPRINGS, VT 05460-0230
PO BOX 231, HIGHGATE SPRINGS, VT 05460-0231
PO BOX 232, HIGHGATE SPRINGS, VT 05460-0232
PO BOX 233, HIGHGATE SPRINGS, VT 05460-0233
PO BOX 234, HIGHGATE SPRINGS, VT 05460-0234
PO BOX 235, HIGHGATE SPRINGS, VT 05460-0235
PO BOX 236, HIGHGATE SPRINGS, VT 05460-0236
PO BOX 237, HIGHGATE SPRINGS, VT 05460-0237
PO BOX 238, HIGHGATE SPRINGS, VT 05460-0238
PO BOX 239, HIGHGATE SPRINGS, VT 05460-0239
PO BOX 240, HIGHGATE SPRINGS, VT 05460-0240
PO BOX 241, HIGHGATE SPRINGS, VT 05460-0241
PO BOX 242, HIGHGATE SPRINGS, VT 05460-0242
PO BOX 243, HIGHGATE SPRINGS, VT 05460-0243
PO BOX 244, HIGHGATE SPRINGS, VT 05460-0244
PO BOX 245, HIGHGATE SPRINGS, VT 05460-0245
PO BOX 246, HIGHGATE SPRINGS, VT 05460-0246
PO BOX 247, HIGHGATE SPRINGS, VT 05460-0247
PO BOX 248, HIGHGATE SPRINGS, VT 05460-0248
PO BOX 249, HIGHGATE SPRINGS, VT 05460-0249
PO BOX 250, HIGHGATE SPRINGS, VT 05460-0250
PO BOX 251, HIGHGATE SPRINGS, VT 05460-0251
PO BOX 252, HIGHGATE SPRINGS, VT 05460-0252
PO BOX 253, HIGHGATE SPRINGS, VT 05460-0253
PO BOX 254, HIGHGATE SPRINGS, VT 05460-0254
PO BOX 255, HIGHGATE SPRINGS, VT 05460-0255
PO BOX 256, HIGHGATE SPRINGS, VT 05460-0256
PO BOX 257, HIGHGATE SPRINGS, VT 05460-0257
PO BOX 258, HIGHGATE SPRINGS, VT 05460-0258
PO BOX 259, HIGHGATE SPRINGS, VT 05460-0259
PO BOX 260, HIGHGATE SPRINGS, VT 05460-0260
PO BOX 261, HIGHGATE SPRINGS, VT 05460-0261
PO BOX 262, HIGHGATE SPRINGS, VT 05460-0262
PO BOX 263, HIGHGATE SPRINGS, VT 05460-0263
PO BOX 264, HIGHGATE SPRINGS, VT 05460-0264
PO BOX 265, HIGHGATE SPRINGS, VT 05460-0265
PO BOX 266, HIGHGATE SPRINGS, VT 05460-0266
PO BOX 267, HIGHGATE SPRINGS, VT 05460-0267
PO BOX 268, HIGHGATE SPRINGS, VT 05460-0268
PO BOX 269, HIGHGATE SPRINGS, VT 05460-0269
PO BOX 270, HIGHGATE SPRINGS, VT 05460-0270
PO BOX 271, HIGHGATE SPRINGS, VT 05460-0271
PO BOX 272, HIGHGATE SPRINGS, VT 05460-0272
PO BOX 273, HIGHGATE SPRINGS, VT 05460-0273
PO BOX 274, HIGHGATE SPRINGS, VT 05460-0274
PO BOX 275, HIGHGATE SPRINGS, VT 05460-0275
PO BOX 276, HIGHGATE SPRINGS, VT 05460-0276
PO BOX 277, HIGHGATE SPRINGS, VT 05460-0277
PO BOX 278, HIGHGATE SPRINGS, VT 05460-0278
PO BOX 279, HIGHGATE SPRINGS, VT 05460-0279
PO BOX 280, HIGHGATE SPRINGS, VT 05460-0280
PO BOX 281, HIGHGATE SPRINGS, VT 05460-0281
PO BOX 282, HIGHGATE SPRINGS, VT 05460-0282
PO BOX 283, HIGHGATE SPRINGS, VT 05460-0283
PO BOX 284, HIGHGATE SPRINGS, VT 05460-0284
PO BOX 285, HIGHGATE SPRINGS, VT 05460-0285
PO BOX 286, HIGHGATE SPRINGS, VT 05460-0286
PO BOX 287, HIGHGATE SPRINGS, VT 05460-0287
PO BOX 288, HIGHGATE SPRINGS, VT 05460-0288
PO BOX 289, HIGHGATE SPRINGS, VT 05460-0289
PO BOX 290, HIGHGATE SPRINGS, VT 05460-0290
PO BOX 291, HIGHGATE SPRINGS, VT 05460-0291
PO BOX 292, HIGHGATE SPRINGS, VT 05460-0292
PO BOX 293, HIGHGATE SPRINGS, VT 05460-0293
PO BOX 294, HIGHGATE SPRINGS, VT 05460-0294
PO BOX 295, HIGHGATE SPRINGS, VT 05460-0295
PO BOX 296, HIGHGATE SPRINGS, VT 05460-0296
PO BOX 297, HIGHGATE SPRINGS, VT 05460-0297
PO BOX 298, HIGHGATE SPRINGS, VT 05460-0298
PO BOX 299, HIGHGATE SPRINGS, VT 05460-0299
PO BOX 300, HIGHGATE SPRINGS, VT 05460-0300
PO BOX 301, HIGHGATE SPRINGS, VT 05460-0301
PO BOX 302, HIGHGATE SPRINGS, VT 05460-0302
PO BOX 303, HIGHGATE SPRINGS, VT 05460-0303
PO BOX 304, HIGHGATE SPRINGS, VT 05460-0304
PO BOX 305, HIGHGATE SPRINGS, VT 05460-0305
PO BOX 306, HIGHGATE SPRINGS, VT 05460-0306
PO BOX 307, HIGHGATE SPRINGS, VT 05460-0307
PO BOX 308, HIGHGATE SPRINGS, VT 05460-0308
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