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 239, BARKSDALE AFB, LA 71110-0239
PO BOX 240, BARKSDALE AFB, LA 71110-0240
PO BOX 241, BARKSDALE AFB, LA 71110-0241
PO BOX 242, BARKSDALE AFB, LA 71110-0242
PO BOX 243, BARKSDALE AFB, LA 71110-0243
PO BOX 244, BARKSDALE AFB, LA 71110-0244
PO BOX 245, BARKSDALE AFB, LA 71110-0245
PO BOX 246, BARKSDALE AFB, LA 71110-0246
PO BOX 247, BARKSDALE AFB, LA 71110-0247
PO BOX 248, BARKSDALE AFB, LA 71110-0248
PO BOX 249, BARKSDALE AFB, LA 71110-0249
PO BOX 250, BARKSDALE AFB, LA 71110-0250
PO BOX 251, BARKSDALE AFB, LA 71110-0251
PO BOX 252, BARKSDALE AFB, LA 71110-0252
PO BOX 253, BARKSDALE AFB, LA 71110-0253
PO BOX 254, BARKSDALE AFB, LA 71110-0254
PO BOX 255, BARKSDALE AFB, LA 71110-0255
PO BOX 256, BARKSDALE AFB, LA 71110-0256
PO BOX 257, BARKSDALE AFB, LA 71110-0257
PO BOX 258, BARKSDALE AFB, LA 71110-0258
PO BOX 259, BARKSDALE AFB, LA 71110-0259
PO BOX 260, BARKSDALE AFB, LA 71110-0260
PO BOX 261, BARKSDALE AFB, LA 71110-0261
PO BOX 262, BARKSDALE AFB, LA 71110-0262
PO BOX 263, BARKSDALE AFB, LA 71110-0263
PO BOX 264, BARKSDALE AFB, LA 71110-0264
PO BOX 265, BARKSDALE AFB, LA 71110-0265
PO BOX 266, BARKSDALE AFB, LA 71110-0266
PO BOX 267, BARKSDALE AFB, LA 71110-0267
PO BOX 268, BARKSDALE AFB, LA 71110-0268
PO BOX 269, BARKSDALE AFB, LA 71110-0269
PO BOX 270, BARKSDALE AFB, LA 71110-0270
PO BOX 271, BARKSDALE AFB, LA 71110-0271
PO BOX 272, BARKSDALE AFB, LA 71110-0272
PO BOX 273, BARKSDALE AFB, LA 71110-0273
PO BOX 274, BARKSDALE AFB, LA 71110-0274
PO BOX 275, BARKSDALE AFB, LA 71110-0275
PO BOX 276, BARKSDALE AFB, LA 71110-0276
PO BOX 277, BARKSDALE AFB, LA 71110-0277
PO BOX 278, BARKSDALE AFB, LA 71110-0278
PO BOX 279, BARKSDALE AFB, LA 71110-0279
PO BOX 280, BARKSDALE AFB, LA 71110-0280
PO BOX 281, BARKSDALE AFB, LA 71110-0281
PO BOX 282, BARKSDALE AFB, LA 71110-0282
PO BOX 283, BARKSDALE AFB, LA 71110-0283
PO BOX 284, BARKSDALE AFB, LA 71110-0284
PO BOX 285, BARKSDALE AFB, LA 71110-0285
PO BOX 286, BARKSDALE AFB, LA 71110-0286
PO BOX 287, BARKSDALE AFB, LA 71110-0287
PO BOX 288, BARKSDALE AFB, LA 71110-0288
PO BOX 289, BARKSDALE AFB, LA 71110-0289
PO BOX 290, BARKSDALE AFB, LA 71110-0290
PO BOX 291, BARKSDALE AFB, LA 71110-0291
PO BOX 292, BARKSDALE AFB, LA 71110-0292
PO BOX 293, BARKSDALE AFB, LA 71110-0293
PO BOX 294, BARKSDALE AFB, LA 71110-0294
PO BOX 295, BARKSDALE AFB, LA 71110-0295
PO BOX 296, BARKSDALE AFB, LA 71110-0296
PO BOX 297, BARKSDALE AFB, LA 71110-0297
PO BOX 298, BARKSDALE AFB, LA 71110-0298
PO BOX 299, BARKSDALE AFB, LA 71110-0299
PO BOX 300, BARKSDALE AFB, LA 71110-0300
PO BOX 301, BARKSDALE AFB, LA 71110-0301
PO BOX 302, BARKSDALE AFB, LA 71110-0302
PO BOX 303, BARKSDALE AFB, LA 71110-0303
PO BOX 304, BARKSDALE AFB, LA 71110-0304
PO BOX 305, BARKSDALE AFB, LA 71110-0305
PO BOX 306, BARKSDALE AFB, LA 71110-0306
PO BOX 307, BARKSDALE AFB, LA 71110-0307
PO BOX 308, BARKSDALE AFB, LA 71110-0308
PO BOX 309, BARKSDALE AFB, LA 71110-0309
PO BOX 310, BARKSDALE AFB, LA 71110-0310
PO BOX 311, BARKSDALE AFB, LA 71110-0311
PO BOX 312, BARKSDALE AFB, LA 71110-0312
PO BOX 313, BARKSDALE AFB, LA 71110-0313
PO BOX 314, BARKSDALE AFB, LA 71110-0314
PO BOX 315, BARKSDALE AFB, LA 71110-0315
PO BOX 316, BARKSDALE AFB, LA 71110-0316
PO BOX 317, BARKSDALE AFB, LA 71110-0317
PO BOX 318, BARKSDALE AFB, LA 71110-0318
PO BOX 319, BARKSDALE AFB, LA 71110-0319
PO BOX 320, BARKSDALE AFB, LA 71110-0320
PO BOX 321, BARKSDALE AFB, LA 71110-0321
PO BOX 322, BARKSDALE AFB, LA 71110-0322
PO BOX 323, BARKSDALE AFB, LA 71110-0323
PO BOX 324, BARKSDALE AFB, LA 71110-0324
PO BOX 325, BARKSDALE AFB, LA 71110-0325
PO BOX 326, BARKSDALE AFB, LA 71110-0326
PO BOX 327, BARKSDALE AFB, LA 71110-0327
PO BOX 328, BARKSDALE AFB, LA 71110-0328
PO BOX 329, BARKSDALE AFB, LA 71110-0329
PO BOX 330, BARKSDALE AFB, LA 71110-0330
PO BOX 331, BARKSDALE AFB, LA 71110-0331
PO BOX 332, BARKSDALE AFB, LA 71110-0332
PO BOX 333, BARKSDALE AFB, LA 71110-0333
PO BOX 334, BARKSDALE AFB, LA 71110-0334
PO BOX 335, BARKSDALE AFB, LA 71110-0335
PO BOX 336, BARKSDALE AFB, LA 71110-0336
PO BOX 337, BARKSDALE AFB, LA 71110-0337
PO BOX 338, BARKSDALE AFB, LA 71110-0338
PO BOX 339, BARKSDALE AFB, LA 71110-0339
PO BOX 340, BARKSDALE AFB, LA 71110-0340
PO BOX 341, BARKSDALE AFB, LA 71110-0341
PO BOX 342, BARKSDALE AFB, LA 71110-0342
PO BOX 343, BARKSDALE AFB, LA 71110-0343
PO BOX 344, BARKSDALE AFB, LA 71110-0344
PO BOX 345, BARKSDALE AFB, LA 71110-0345
PO BOX 346, BARKSDALE AFB, LA 71110-0346
PO BOX 347, BARKSDALE AFB, LA 71110-0347
PO BOX 348, BARKSDALE AFB, LA 71110-0348
PO BOX 349, BARKSDALE AFB, LA 71110-0349
PO BOX 350, BARKSDALE AFB, LA 71110-0350
PO BOX 351, BARKSDALE AFB, LA 71110-0351
PO BOX 352, BARKSDALE AFB, LA 71110-0352
PO BOX 353, BARKSDALE AFB, LA 71110-0353
PO BOX 354, BARKSDALE AFB, LA 71110-0354
PO BOX 355, BARKSDALE AFB, LA 71110-0355
PO BOX 356, BARKSDALE AFB, LA 71110-0356
PO BOX 357, BARKSDALE AFB, LA 71110-0357
PO BOX 358, BARKSDALE AFB, LA 71110-0358
PO BOX 359, BARKSDALE AFB, LA 71110-0359
PO BOX 360, BARKSDALE AFB, LA 71110-0360
PO BOX 361, BARKSDALE AFB, LA 71110-0361
PO BOX 362, BARKSDALE AFB, LA 71110-0362
PO BOX 363, BARKSDALE AFB, LA 71110-0363
PO BOX 364, BARKSDALE AFB, LA 71110-0364
PO BOX 365, BARKSDALE AFB, LA 71110-0365
PO BOX 366, BARKSDALE AFB, LA 71110-0366
PO BOX 367, BARKSDALE AFB, LA 71110-0367
PO BOX 368, BARKSDALE AFB, LA 71110-0368
PO BOX 369, BARKSDALE AFB, LA 71110-0369
PO BOX 370, BARKSDALE AFB, LA 71110-0370
PO BOX 371, BARKSDALE AFB, LA 71110-0371
PO BOX 372, BARKSDALE AFB, LA 71110-0372
PO BOX 373, BARKSDALE AFB, LA 71110-0373
PO BOX 374, BARKSDALE AFB, LA 71110-0374
PO BOX 375, BARKSDALE AFB, LA 71110-0375
PO BOX 376, BARKSDALE AFB, LA 71110-0376
PO BOX 377, BARKSDALE AFB, LA 71110-0377
PO BOX 378, BARKSDALE AFB, LA 71110-0378
PO BOX 379, BARKSDALE AFB, LA 71110-0379
PO BOX 380, BARKSDALE AFB, LA 71110-0380
PO BOX 381, BARKSDALE AFB, LA 71110-0381
PO BOX 382, BARKSDALE AFB, LA 71110-0382
PO BOX 383, BARKSDALE AFB, LA 71110-0383
PO BOX 384, BARKSDALE AFB, LA 71110-0384
PO BOX 385, BARKSDALE AFB, LA 71110-0385
PO BOX 386, BARKSDALE AFB, LA 71110-0386
PO BOX 387, BARKSDALE AFB, LA 71110-0387
PO BOX 388, BARKSDALE AFB, LA 71110-0388
PO BOX 389, BARKSDALE AFB, LA 71110-0389
PO BOX 390, BARKSDALE AFB, LA 71110-0390
PO BOX 391, BARKSDALE AFB, LA 71110-0391
PO BOX 392, BARKSDALE AFB, LA 71110-0392
PO BOX 393, BARKSDALE AFB, LA 71110-0393
PO BOX 394, BARKSDALE AFB, LA 71110-0394
PO BOX 395, BARKSDALE AFB, LA 71110-0395
PO BOX 396, BARKSDALE AFB, LA 71110-0396
PO BOX 397, BARKSDALE AFB, LA 71110-0397
PO BOX 398, BARKSDALE AFB, LA 71110-0398
PO BOX 399, BARKSDALE AFB, LA 71110-0399
PO BOX 400, BARKSDALE AFB, LA 71110-0400
PO BOX 401, BARKSDALE AFB, LA 71110-0401
PO BOX 402, BARKSDALE AFB, LA 71110-0402
PO BOX 403, BARKSDALE AFB, LA 71110-0403
PO BOX 404, BARKSDALE AFB, LA 71110-0404
PO BOX 405, BARKSDALE AFB, LA 71110-0405
PO BOX 406, BARKSDALE AFB, LA 71110-0406
PO BOX 407, BARKSDALE AFB, LA 71110-0407
PO BOX 408, BARKSDALE AFB, LA 71110-0408
PO BOX 409, BARKSDALE AFB, LA 71110-0409
PO BOX 410, BARKSDALE AFB, LA 71110-0410
PO BOX 411, BARKSDALE AFB, LA 71110-0411
PO BOX 412, BARKSDALE AFB, LA 71110-0412
PO BOX 413, BARKSDALE AFB, LA 71110-0413
PO BOX 414, BARKSDALE AFB, LA 71110-0414
PO BOX 415, BARKSDALE AFB, LA 71110-0415
PO BOX 416, BARKSDALE AFB, LA 71110-0416
PO BOX 417, BARKSDALE AFB, LA 71110-0417
PO BOX 418, BARKSDALE AFB, LA 71110-0418
PO BOX 419, BARKSDALE AFB, LA 71110-0419
PO BOX 420, BARKSDALE AFB, LA 71110-0420
PO BOX 421, BARKSDALE AFB, LA 71110-0421
PO BOX 422, BARKSDALE AFB, LA 71110-0422
PO BOX 423, BARKSDALE AFB, LA 71110-0423
PO BOX 424, BARKSDALE AFB, LA 71110-0424
PO BOX 425, BARKSDALE AFB, LA 71110-0425
PO BOX 426, BARKSDALE AFB, LA 71110-0426
PO BOX 427, BARKSDALE AFB, LA 71110-0427
PO BOX 428, BARKSDALE AFB, LA 71110-0428
PO BOX 429, BARKSDALE AFB, LA 71110-0429
PO BOX 430, BARKSDALE AFB, LA 71110-0430
PO BOX 431, BARKSDALE AFB, LA 71110-0431
PO BOX 432, BARKSDALE AFB, LA 71110-0432
PO BOX 433, BARKSDALE AFB, LA 71110-0433
PO BOX 434, BARKSDALE AFB, LA 71110-0434
PO BOX 435, BARKSDALE AFB, LA 71110-0435
PO BOX 436, BARKSDALE AFB, LA 71110-0436
PO BOX 437, BARKSDALE AFB, LA 71110-0437
PO BOX 438, BARKSDALE AFB, LA 71110-0438
PO BOX 439, BARKSDALE AFB, LA 71110-0439
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