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 241, SAINT BERNARD, LA 70085-0241
PO BOX 242, SAINT BERNARD, LA 70085-0242
PO BOX 243, SAINT BERNARD, LA 70085-0243
PO BOX 244, SAINT BERNARD, LA 70085-0244
PO BOX 245, SAINT BERNARD, LA 70085-0245
PO BOX 246, SAINT BERNARD, LA 70085-0246
PO BOX 247, SAINT BERNARD, LA 70085-0247
PO BOX 248, SAINT BERNARD, LA 70085-0248
PO BOX 249, SAINT BERNARD, LA 70085-0249
PO BOX 250, SAINT BERNARD, LA 70085-0250
PO BOX 251, SAINT BERNARD, LA 70085-0251
PO BOX 252, SAINT BERNARD, LA 70085-0252
PO BOX 253, SAINT BERNARD, LA 70085-0253
PO BOX 254, SAINT BERNARD, LA 70085-0254
PO BOX 255, SAINT BERNARD, LA 70085-0255
PO BOX 256, SAINT BERNARD, LA 70085-0256
PO BOX 257, SAINT BERNARD, LA 70085-0257
PO BOX 258, SAINT BERNARD, LA 70085-0258
PO BOX 259, SAINT BERNARD, LA 70085-0259
PO BOX 260, SAINT BERNARD, LA 70085-0260
PO BOX 261, SAINT BERNARD, LA 70085-0261
PO BOX 262, SAINT BERNARD, LA 70085-0262
PO BOX 263, SAINT BERNARD, LA 70085-0263
PO BOX 264, SAINT BERNARD, LA 70085-0264
PO BOX 265, SAINT BERNARD, LA 70085-0265
PO BOX 266, SAINT BERNARD, LA 70085-0266
PO BOX 267, SAINT BERNARD, LA 70085-0267
PO BOX 268, SAINT BERNARD, LA 70085-0268
PO BOX 269, SAINT BERNARD, LA 70085-0269
PO BOX 270, SAINT BERNARD, LA 70085-0270
PO BOX 271, SAINT BERNARD, LA 70085-0271
PO BOX 272, SAINT BERNARD, LA 70085-0272
PO BOX 273, SAINT BERNARD, LA 70085-0273
PO BOX 274, SAINT BERNARD, LA 70085-0274
PO BOX 275, SAINT BERNARD, LA 70085-0275
PO BOX 276, SAINT BERNARD, LA 70085-0276
PO BOX 277, SAINT BERNARD, LA 70085-0277
PO BOX 278, SAINT BERNARD, LA 70085-0278
PO BOX 279, SAINT BERNARD, LA 70085-0279
PO BOX 280, SAINT BERNARD, LA 70085-0280
PO BOX 281, SAINT BERNARD, LA 70085-0281
PO BOX 282, SAINT BERNARD, LA 70085-0282
PO BOX 283, SAINT BERNARD, LA 70085-0283
PO BOX 284, SAINT BERNARD, LA 70085-0284
PO BOX 285, SAINT BERNARD, LA 70085-0285
PO BOX 286, SAINT BERNARD, LA 70085-0286
PO BOX 287, SAINT BERNARD, LA 70085-0287
PO BOX 288, SAINT BERNARD, LA 70085-0288
PO BOX 289, SAINT BERNARD, LA 70085-0289
PO BOX 290, SAINT BERNARD, LA 70085-0290
PO BOX 291, SAINT BERNARD, LA 70085-0291
PO BOX 292, SAINT BERNARD, LA 70085-0292
PO BOX 293, SAINT BERNARD, LA 70085-0293
PO BOX 294, SAINT BERNARD, LA 70085-0294
PO BOX 295, SAINT BERNARD, LA 70085-0295
PO BOX 296, SAINT BERNARD, LA 70085-0296
PO BOX 297, SAINT BERNARD, LA 70085-0297
PO BOX 298, SAINT BERNARD, LA 70085-0298
PO BOX 299, SAINT BERNARD, LA 70085-0299
PO BOX 300, SAINT BERNARD, LA 70085-0300
PO BOX 301, SAINT BERNARD, LA 70085-0301
PO BOX 302, SAINT BERNARD, LA 70085-0302
PO BOX 303, SAINT BERNARD, LA 70085-0303
PO BOX 304, SAINT BERNARD, LA 70085-0304
PO BOX 305, SAINT BERNARD, LA 70085-0305
PO BOX 306, SAINT BERNARD, LA 70085-0306
PO BOX 307, SAINT BERNARD, LA 70085-0307
PO BOX 308, SAINT BERNARD, LA 70085-0308
PO BOX 309, SAINT BERNARD, LA 70085-0309
PO BOX 310, SAINT BERNARD, LA 70085-0310
PO BOX 311, SAINT BERNARD, LA 70085-0311
PO BOX 312, SAINT BERNARD, LA 70085-0312
PO BOX 313, SAINT BERNARD, LA 70085-0313
PO BOX 314, SAINT BERNARD, LA 70085-0314
PO BOX 315, SAINT BERNARD, LA 70085-0315
PO BOX 316, SAINT BERNARD, LA 70085-0316
PO BOX 317, SAINT BERNARD, LA 70085-0317
PO BOX 318, SAINT BERNARD, LA 70085-0318
PO BOX 319, SAINT BERNARD, LA 70085-0319
PO BOX 320, SAINT BERNARD, LA 70085-0320
PO BOX 321, SAINT BERNARD, LA 70085-0321
PO BOX 322, SAINT BERNARD, LA 70085-0322
PO BOX 323, SAINT BERNARD, LA 70085-0323
PO BOX 324, SAINT BERNARD, LA 70085-0324
PO BOX 325, SAINT BERNARD, LA 70085-0325
PO BOX 326, SAINT BERNARD, LA 70085-0326
PO BOX 327, SAINT BERNARD, LA 70085-0327
PO BOX 328, SAINT BERNARD, LA 70085-0328
PO BOX 329, SAINT BERNARD, LA 70085-0329
PO BOX 330, SAINT BERNARD, LA 70085-0330
PO BOX 331, SAINT BERNARD, LA 70085-0331
PO BOX 332, SAINT BERNARD, LA 70085-0332
PO BOX 333, SAINT BERNARD, LA 70085-0333
PO BOX 334, SAINT BERNARD, LA 70085-0334
PO BOX 335, SAINT BERNARD, LA 70085-0335
PO BOX 336, SAINT BERNARD, LA 70085-0336
PO BOX 337, SAINT BERNARD, LA 70085-0337
PO BOX 338, SAINT BERNARD, LA 70085-0338
PO BOX 339, SAINT BERNARD, LA 70085-0339
PO BOX 340, SAINT BERNARD, LA 70085-0340
PO BOX 341, SAINT BERNARD, LA 70085-0341
PO BOX 342, SAINT BERNARD, LA 70085-0342
PO BOX 343, SAINT BERNARD, LA 70085-0343
PO BOX 344, SAINT BERNARD, LA 70085-0344
PO BOX 345, SAINT BERNARD, LA 70085-0345
PO BOX 346, SAINT BERNARD, LA 70085-0346
PO BOX 347, SAINT BERNARD, LA 70085-0347
PO BOX 348, SAINT BERNARD, LA 70085-0348
PO BOX 349, SAINT BERNARD, LA 70085-0349
PO BOX 350, SAINT BERNARD, LA 70085-0350
PO BOX 351, SAINT BERNARD, LA 70085-0351
PO BOX 352, SAINT BERNARD, LA 70085-0352
PO BOX 353, SAINT BERNARD, LA 70085-0353
PO BOX 354, SAINT BERNARD, LA 70085-0354
PO BOX 355, SAINT BERNARD, LA 70085-0355
PO BOX 356, SAINT BERNARD, LA 70085-0356
PO BOX 357, SAINT BERNARD, LA 70085-0357
PO BOX 358, SAINT BERNARD, LA 70085-0358
PO BOX 359, SAINT BERNARD, LA 70085-0359
PO BOX 360, SAINT BERNARD, LA 70085-0360
PO BOX 361, SAINT BERNARD, LA 70085-0361
PO BOX 362, SAINT BERNARD, LA 70085-0362
PO BOX 363, SAINT BERNARD, LA 70085-0363
PO BOX 364, SAINT BERNARD, LA 70085-0364
PO BOX 365, SAINT BERNARD, LA 70085-0365
PO BOX 366, SAINT BERNARD, LA 70085-0366
PO BOX 367, SAINT BERNARD, LA 70085-0367
PO BOX 368, SAINT BERNARD, LA 70085-0368
PO BOX 369, SAINT BERNARD, LA 70085-0369
PO BOX 370, SAINT BERNARD, LA 70085-0370
PO BOX 371, SAINT BERNARD, LA 70085-0371
PO BOX 372, SAINT BERNARD, LA 70085-0372
PO BOX 373, SAINT BERNARD, LA 70085-0373
PO BOX 374, SAINT BERNARD, LA 70085-0374
PO BOX 375, SAINT BERNARD, LA 70085-0375
PO BOX 376, SAINT BERNARD, LA 70085-0376
PO BOX 377, SAINT BERNARD, LA 70085-0377
PO BOX 378, SAINT BERNARD, LA 70085-0378
PO BOX 379, SAINT BERNARD, LA 70085-0379
PO BOX 380, SAINT BERNARD, LA 70085-0380
PO BOX 381, SAINT BERNARD, LA 70085-0381
PO BOX 382, SAINT BERNARD, LA 70085-0382
PO BOX 383, SAINT BERNARD, LA 70085-0383
PO BOX 384, SAINT BERNARD, LA 70085-0384
PO BOX 385, SAINT BERNARD, LA 70085-0385
PO BOX 386, SAINT BERNARD, LA 70085-0386
PO BOX 387, SAINT BERNARD, LA 70085-0387
PO BOX 388, SAINT BERNARD, LA 70085-0388
PO BOX 389, SAINT BERNARD, LA 70085-0389
PO BOX 390, SAINT BERNARD, LA 70085-0390
PO BOX 391, SAINT BERNARD, LA 70085-0391
PO BOX 392, SAINT BERNARD, LA 70085-0392
PO BOX 393, SAINT BERNARD, LA 70085-0393
PO BOX 394, SAINT BERNARD, LA 70085-0394
PO BOX 395, SAINT BERNARD, LA 70085-0395
PO BOX 396, SAINT BERNARD, LA 70085-0396
PO BOX 397, SAINT BERNARD, LA 70085-0397
PO BOX 398, SAINT BERNARD, LA 70085-0398
PO BOX 399, SAINT BERNARD, LA 70085-0399
PO BOX 400, SAINT BERNARD, LA 70085-0400
PO BOX 401, SAINT BERNARD, LA 70085-0401
PO BOX 402, SAINT BERNARD, LA 70085-0402
PO BOX 403, SAINT BERNARD, LA 70085-0403
PO BOX 404, SAINT BERNARD, LA 70085-0404
PO BOX 405, SAINT BERNARD, LA 70085-0405
PO BOX 406, SAINT BERNARD, LA 70085-0406
PO BOX 407, SAINT BERNARD, LA 70085-0407
PO BOX 408, SAINT BERNARD, LA 70085-0408
PO BOX 409, SAINT BERNARD, LA 70085-0409
PO BOX 410, SAINT BERNARD, LA 70085-0410
PO BOX 411, SAINT BERNARD, LA 70085-0411
PO BOX 412, SAINT BERNARD, LA 70085-0412
PO BOX 413, SAINT BERNARD, LA 70085-0413
PO BOX 414, SAINT BERNARD, LA 70085-0414
PO BOX 415, SAINT BERNARD, LA 70085-0415
PO BOX 416, SAINT BERNARD, LA 70085-0416
PO BOX 417, SAINT BERNARD, LA 70085-0417
PO BOX 418, SAINT BERNARD, LA 70085-0418
PO BOX 419, SAINT BERNARD, LA 70085-0419
PO BOX 420, SAINT BERNARD, LA 70085-0420
PO BOX 421, SAINT BERNARD, LA 70085-0421
PO BOX 422, SAINT BERNARD, LA 70085-0422
PO BOX 423, SAINT BERNARD, LA 70085-0423
PO BOX 424, SAINT BERNARD, LA 70085-0424
PO BOX 425, SAINT BERNARD, LA 70085-0425
PO BOX 426, SAINT BERNARD, LA 70085-0426
PO BOX 427, SAINT BERNARD, LA 70085-0427
PO BOX 428, SAINT BERNARD, LA 70085-0428
PO BOX 429, SAINT BERNARD, LA 70085-0429
PO BOX 430, SAINT BERNARD, LA 70085-0430
PO BOX 431, SAINT BERNARD, LA 70085-0431
PO BOX 432, SAINT BERNARD, LA 70085-0432
PO BOX 433, SAINT BERNARD, LA 70085-0433
PO BOX 434, SAINT BERNARD, LA 70085-0434
PO BOX 435, SAINT BERNARD, LA 70085-0435
PO BOX 436, SAINT BERNARD, LA 70085-0436
PO BOX 437, SAINT BERNARD, LA 70085-0437
PO BOX 438, SAINT BERNARD, LA 70085-0438
PO BOX 439, SAINT BERNARD, LA 70085-0439
PO BOX 440, SAINT BERNARD, LA 70085-0440
PO BOX 441, SAINT BERNARD, LA 70085-0441
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