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, ELLSWORTH, IA 50075-0241
PO BOX 242, ELLSWORTH, IA 50075-0242
PO BOX 243, ELLSWORTH, IA 50075-0243
PO BOX 244, ELLSWORTH, IA 50075-0244
PO BOX 245, ELLSWORTH, IA 50075-0245
PO BOX 246, ELLSWORTH, IA 50075-0246
PO BOX 247, ELLSWORTH, IA 50075-0247
PO BOX 248, ELLSWORTH, IA 50075-0248
PO BOX 249, ELLSWORTH, IA 50075-0249
PO BOX 250, ELLSWORTH, IA 50075-0250
PO BOX 251, ELLSWORTH, IA 50075-0251
PO BOX 252, ELLSWORTH, IA 50075-0252
PO BOX 253, ELLSWORTH, IA 50075-0253
PO BOX 254, ELLSWORTH, IA 50075-0254
PO BOX 255, ELLSWORTH, IA 50075-0255
PO BOX 256, ELLSWORTH, IA 50075-0256
PO BOX 257, ELLSWORTH, IA 50075-0257
PO BOX 258, ELLSWORTH, IA 50075-0258
PO BOX 259, ELLSWORTH, IA 50075-0259
PO BOX 260, ELLSWORTH, IA 50075-0260
PO BOX 261, ELLSWORTH, IA 50075-0261
PO BOX 262, ELLSWORTH, IA 50075-0262
PO BOX 263, ELLSWORTH, IA 50075-0263
PO BOX 264, ELLSWORTH, IA 50075-0264
PO BOX 265, ELLSWORTH, IA 50075-0265
PO BOX 266, ELLSWORTH, IA 50075-0266
PO BOX 267, ELLSWORTH, IA 50075-0267
PO BOX 268, ELLSWORTH, IA 50075-0268
PO BOX 269, ELLSWORTH, IA 50075-0269
PO BOX 270, ELLSWORTH, IA 50075-0270
PO BOX 271, ELLSWORTH, IA 50075-0271
PO BOX 272, ELLSWORTH, IA 50075-0272
PO BOX 273, ELLSWORTH, IA 50075-0273
PO BOX 274, ELLSWORTH, IA 50075-0274
PO BOX 275, ELLSWORTH, IA 50075-0275
PO BOX 276, ELLSWORTH, IA 50075-0276
PO BOX 277, ELLSWORTH, IA 50075-0277
PO BOX 278, ELLSWORTH, IA 50075-0278
PO BOX 279, ELLSWORTH, IA 50075-0279
PO BOX 280, ELLSWORTH, IA 50075-0280
PO BOX 281, ELLSWORTH, IA 50075-0281
PO BOX 282, ELLSWORTH, IA 50075-0282
PO BOX 283, ELLSWORTH, IA 50075-0283
PO BOX 284, ELLSWORTH, IA 50075-0284
PO BOX 285, ELLSWORTH, IA 50075-0285
PO BOX 286, ELLSWORTH, IA 50075-0286
PO BOX 287, ELLSWORTH, IA 50075-0287
PO BOX 288, ELLSWORTH, IA 50075-0288
PO BOX 289, ELLSWORTH, IA 50075-0289
PO BOX 290, ELLSWORTH, IA 50075-0290
PO BOX 291, ELLSWORTH, IA 50075-0291
PO BOX 292, ELLSWORTH, IA 50075-0292
PO BOX 293, ELLSWORTH, IA 50075-0293
PO BOX 294, ELLSWORTH, IA 50075-0294
PO BOX 295, ELLSWORTH, IA 50075-0295
PO BOX 296, ELLSWORTH, IA 50075-0296
PO BOX 297, ELLSWORTH, IA 50075-0297
PO BOX 298, ELLSWORTH, IA 50075-0298
PO BOX 299, ELLSWORTH, IA 50075-0299
PO BOX 300, ELLSWORTH, IA 50075-0300
PO BOX 301, ELLSWORTH, IA 50075-0301
PO BOX 302, ELLSWORTH, IA 50075-0302
PO BOX 303, ELLSWORTH, IA 50075-0303
PO BOX 304, ELLSWORTH, IA 50075-0304
PO BOX 305, ELLSWORTH, IA 50075-0305
PO BOX 306, ELLSWORTH, IA 50075-0306
PO BOX 307, ELLSWORTH, IA 50075-0307
PO BOX 308, ELLSWORTH, IA 50075-0308
PO BOX 309, ELLSWORTH, IA 50075-0309
PO BOX 310, ELLSWORTH, IA 50075-0310
PO BOX 311, ELLSWORTH, IA 50075-0311
PO BOX 312, ELLSWORTH, IA 50075-0312
PO BOX 313, ELLSWORTH, IA 50075-0313
PO BOX 314, ELLSWORTH, IA 50075-0314
PO BOX 315, ELLSWORTH, IA 50075-0315
PO BOX 316, ELLSWORTH, IA 50075-0316
PO BOX 317, ELLSWORTH, IA 50075-0317
PO BOX 318, ELLSWORTH, IA 50075-0318
PO BOX 319, ELLSWORTH, IA 50075-0319
PO BOX 320, ELLSWORTH, IA 50075-0320
PO BOX 321, ELLSWORTH, IA 50075-0321
PO BOX 322, ELLSWORTH, IA 50075-0322
PO BOX 323, ELLSWORTH, IA 50075-0323
PO BOX 324, ELLSWORTH, IA 50075-0324
PO BOX 325, ELLSWORTH, IA 50075-0325
PO BOX 326, ELLSWORTH, IA 50075-0326
PO BOX 327, ELLSWORTH, IA 50075-0327
PO BOX 328, ELLSWORTH, IA 50075-0328
PO BOX 329, ELLSWORTH, IA 50075-0329
PO BOX 330, ELLSWORTH, IA 50075-0330
PO BOX 331, ELLSWORTH, IA 50075-0331
PO BOX 332, ELLSWORTH, IA 50075-0332
PO BOX 333, ELLSWORTH, IA 50075-0333
PO BOX 334, ELLSWORTH, IA 50075-0334
PO BOX 335, ELLSWORTH, IA 50075-0335
PO BOX 336, ELLSWORTH, IA 50075-0336
PO BOX 337, ELLSWORTH, IA 50075-0337
PO BOX 338, ELLSWORTH, IA 50075-0338
PO BOX 339, ELLSWORTH, IA 50075-0339
PO BOX 340, ELLSWORTH, IA 50075-0340
PO BOX 341, ELLSWORTH, IA 50075-0341
PO BOX 342, ELLSWORTH, IA 50075-0342
PO BOX 343, ELLSWORTH, IA 50075-0343
PO BOX 344, ELLSWORTH, IA 50075-0344
PO BOX 345, ELLSWORTH, IA 50075-0345
PO BOX 346, ELLSWORTH, IA 50075-0346
PO BOX 347, ELLSWORTH, IA 50075-0347
PO BOX 348, ELLSWORTH, IA 50075-0348
PO BOX 349, ELLSWORTH, IA 50075-0349
PO BOX 350, ELLSWORTH, IA 50075-0350
PO BOX 351, ELLSWORTH, IA 50075-0351
PO BOX 352, ELLSWORTH, IA 50075-0352
PO BOX 353, ELLSWORTH, IA 50075-0353
PO BOX 354, ELLSWORTH, IA 50075-0354
PO BOX 355, ELLSWORTH, IA 50075-0355
PO BOX 356, ELLSWORTH, IA 50075-0356
PO BOX 357, ELLSWORTH, IA 50075-0357
PO BOX 358, ELLSWORTH, IA 50075-0358
PO BOX 359, ELLSWORTH, IA 50075-0359
PO BOX 360, ELLSWORTH, IA 50075-0360
PO BOX 361, ELLSWORTH, IA 50075-0361
PO BOX 362, ELLSWORTH, IA 50075-0362
PO BOX 363, ELLSWORTH, IA 50075-0363
PO BOX 364, ELLSWORTH, IA 50075-0364
PO BOX 365, ELLSWORTH, IA 50075-0365
PO BOX 366, ELLSWORTH, IA 50075-0366
PO BOX 367, ELLSWORTH, IA 50075-0367
PO BOX 368, ELLSWORTH, IA 50075-0368
PO BOX 369, ELLSWORTH, IA 50075-0369
PO BOX 370, ELLSWORTH, IA 50075-0370
PO BOX 371, ELLSWORTH, IA 50075-0371
PO BOX 372, ELLSWORTH, IA 50075-0372
PO BOX 373, ELLSWORTH, IA 50075-0373
PO BOX 374, ELLSWORTH, IA 50075-0374
PO BOX 375, ELLSWORTH, IA 50075-0375
PO BOX 376, ELLSWORTH, IA 50075-0376
PO BOX 377, ELLSWORTH, IA 50075-0377
PO BOX 378, ELLSWORTH, IA 50075-0378
PO BOX 379, ELLSWORTH, IA 50075-0379
PO BOX 380, ELLSWORTH, IA 50075-0380
PO BOX 381, ELLSWORTH, IA 50075-0381
PO BOX 382, ELLSWORTH, IA 50075-0382
PO BOX 383, ELLSWORTH, IA 50075-0383
PO BOX 384, ELLSWORTH, IA 50075-0384
PO BOX 385, ELLSWORTH, IA 50075-0385
PO BOX 386, ELLSWORTH, IA 50075-0386
PO BOX 387, ELLSWORTH, IA 50075-0387
PO BOX 388, ELLSWORTH, IA 50075-0388
PO BOX 389, ELLSWORTH, IA 50075-0389
PO BOX 390, ELLSWORTH, IA 50075-0390
PO BOX 391, ELLSWORTH, IA 50075-0391
PO BOX 392, ELLSWORTH, IA 50075-0392
PO BOX 393, ELLSWORTH, IA 50075-0393
PO BOX 394, ELLSWORTH, IA 50075-0394
PO BOX 395, ELLSWORTH, IA 50075-0395
PO BOX 396, ELLSWORTH, IA 50075-0396
PO BOX 397, ELLSWORTH, IA 50075-0397
PO BOX 398, ELLSWORTH, IA 50075-0398
PO BOX 399, ELLSWORTH, IA 50075-0399
PO BOX 400, ELLSWORTH, IA 50075-0400
PO BOX 401, ELLSWORTH, IA 50075-0401
PO BOX 402, ELLSWORTH, IA 50075-0402
PO BOX 403, ELLSWORTH, IA 50075-0403
PO BOX 404, ELLSWORTH, IA 50075-0404
PO BOX 405, ELLSWORTH, IA 50075-0405
PO BOX 406, ELLSWORTH, IA 50075-0406
PO BOX 407, ELLSWORTH, IA 50075-0407
PO BOX 408, ELLSWORTH, IA 50075-0408
PO BOX 409, ELLSWORTH, IA 50075-0409
PO BOX 410, ELLSWORTH, IA 50075-0410
PO BOX 411, ELLSWORTH, IA 50075-0411
PO BOX 412, ELLSWORTH, IA 50075-0412
PO BOX 413, ELLSWORTH, IA 50075-0413
PO BOX 414, ELLSWORTH, IA 50075-0414
PO BOX 415, ELLSWORTH, IA 50075-0415
PO BOX 416, ELLSWORTH, IA 50075-0416
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