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 680241, SAN ANTONIO, TX 78268-0241
PO BOX 680242, SAN ANTONIO, TX 78268-0242
PO BOX 680243, SAN ANTONIO, TX 78268-0243
PO BOX 680244, SAN ANTONIO, TX 78268-0244
PO BOX 680245, SAN ANTONIO, TX 78268-0245
PO BOX 680246, SAN ANTONIO, TX 78268-0246
PO BOX 680247, SAN ANTONIO, TX 78268-0247
PO BOX 680248, SAN ANTONIO, TX 78268-0248
PO BOX 680249, SAN ANTONIO, TX 78268-0249
PO BOX 680250, SAN ANTONIO, TX 78268-0250
PO BOX 680251, SAN ANTONIO, TX 78268-0251
PO BOX 680252, SAN ANTONIO, TX 78268-0252
PO BOX 680253, SAN ANTONIO, TX 78268-0253
PO BOX 680254, SAN ANTONIO, TX 78268-0254
PO BOX 680255, SAN ANTONIO, TX 78268-0255
PO BOX 680256, SAN ANTONIO, TX 78268-0256
PO BOX 680257, SAN ANTONIO, TX 78268-0257
PO BOX 680258, SAN ANTONIO, TX 78268-0258
PO BOX 680259, SAN ANTONIO, TX 78268-0259
PO BOX 680260, SAN ANTONIO, TX 78268-0260
PO BOX 680261, SAN ANTONIO, TX 78268-0261
PO BOX 680262, SAN ANTONIO, TX 78268-0262
PO BOX 680263, SAN ANTONIO, TX 78268-0263
PO BOX 680264, SAN ANTONIO, TX 78268-0264
PO BOX 680265, SAN ANTONIO, TX 78268-0265
PO BOX 680266, SAN ANTONIO, TX 78268-0266
PO BOX 680267, SAN ANTONIO, TX 78268-0267
PO BOX 680268, SAN ANTONIO, TX 78268-0268
PO BOX 680269, SAN ANTONIO, TX 78268-0269
PO BOX 680270, SAN ANTONIO, TX 78268-0270
PO BOX 680271, SAN ANTONIO, TX 78268-0271
PO BOX 680272, SAN ANTONIO, TX 78268-0272
PO BOX 680273, SAN ANTONIO, TX 78268-0273
PO BOX 680274, SAN ANTONIO, TX 78268-0274
PO BOX 680275, SAN ANTONIO, TX 78268-0275
PO BOX 680276, SAN ANTONIO, TX 78268-0276
PO BOX 680277, SAN ANTONIO, TX 78268-0277
PO BOX 680278, SAN ANTONIO, TX 78268-0278
PO BOX 680279, SAN ANTONIO, TX 78268-0279
PO BOX 680280, SAN ANTONIO, TX 78268-0280
PO BOX 680281, SAN ANTONIO, TX 78268-0281
PO BOX 680282, SAN ANTONIO, TX 78268-0282
PO BOX 680283, SAN ANTONIO, TX 78268-0283
PO BOX 680284, SAN ANTONIO, TX 78268-0284
PO BOX 680285, SAN ANTONIO, TX 78268-0285
PO BOX 680286, SAN ANTONIO, TX 78268-0286
PO BOX 680287, SAN ANTONIO, TX 78268-0287
PO BOX 680288, SAN ANTONIO, TX 78268-0288
PO BOX 680289, SAN ANTONIO, TX 78268-0289
PO BOX 680290, SAN ANTONIO, TX 78268-0290
PO BOX 680291, SAN ANTONIO, TX 78268-0291
PO BOX 680292, SAN ANTONIO, TX 78268-0292
PO BOX 680293, SAN ANTONIO, TX 78268-0293
PO BOX 680294, SAN ANTONIO, TX 78268-0294
PO BOX 680295, SAN ANTONIO, TX 78268-0295
PO BOX 680296, SAN ANTONIO, TX 78268-0296
PO BOX 680297, SAN ANTONIO, TX 78268-0297
PO BOX 680298, SAN ANTONIO, TX 78268-0298
PO BOX 680299, SAN ANTONIO, TX 78268-0299
PO BOX 680300, SAN ANTONIO, TX 78268-0300
PO BOX 680301, SAN ANTONIO, TX 78268-0301
PO BOX 680302, SAN ANTONIO, TX 78268-0302
PO BOX 680303, SAN ANTONIO, TX 78268-0303
PO BOX 680304, SAN ANTONIO, TX 78268-0304
PO BOX 680305, SAN ANTONIO, TX 78268-0305
PO BOX 680306, SAN ANTONIO, TX 78268-0306
PO BOX 680307, SAN ANTONIO, TX 78268-0307
PO BOX 680308, SAN ANTONIO, TX 78268-0308
PO BOX 680309, SAN ANTONIO, TX 78268-0309
PO BOX 680310, SAN ANTONIO, TX 78268-0310
PO BOX 680311, SAN ANTONIO, TX 78268-0311
PO BOX 680312, SAN ANTONIO, TX 78268-0312
PO BOX 680313, SAN ANTONIO, TX 78268-0313
PO BOX 680314, SAN ANTONIO, TX 78268-0314
PO BOX 680315, SAN ANTONIO, TX 78268-0315
PO BOX 680316, SAN ANTONIO, TX 78268-0316
PO BOX 680317, SAN ANTONIO, TX 78268-0317
PO BOX 680318, SAN ANTONIO, TX 78268-0318
PO BOX 680319, SAN ANTONIO, TX 78268-0319
PO BOX 680320, SAN ANTONIO, TX 78268-0320
PO BOX 680321, SAN ANTONIO, TX 78268-0321
PO BOX 680322, SAN ANTONIO, TX 78268-0322
PO BOX 680323, SAN ANTONIO, TX 78268-0323
PO BOX 680324, SAN ANTONIO, TX 78268-0324
PO BOX 680325, SAN ANTONIO, TX 78268-0325
PO BOX 680326, SAN ANTONIO, TX 78268-0326
PO BOX 680327, SAN ANTONIO, TX 78268-0327
PO BOX 680328, SAN ANTONIO, TX 78268-0328
PO BOX 680329, SAN ANTONIO, TX 78268-0329
PO BOX 680330, SAN ANTONIO, TX 78268-0330
PO BOX 680331, SAN ANTONIO, TX 78268-0331
PO BOX 680332, SAN ANTONIO, TX 78268-0332
PO BOX 680333, SAN ANTONIO, TX 78268-0333
PO BOX 680334, SAN ANTONIO, TX 78268-0334
PO BOX 680335, SAN ANTONIO, TX 78268-0335
PO BOX 680336, SAN ANTONIO, TX 78268-0336
PO BOX 680337, SAN ANTONIO, TX 78268-0337
PO BOX 680338, SAN ANTONIO, TX 78268-0338
PO BOX 680339, SAN ANTONIO, TX 78268-0339
PO BOX 680340, SAN ANTONIO, TX 78268-0340
PO BOX 680341, SAN ANTONIO, TX 78268-0341
PO BOX 680342, SAN ANTONIO, TX 78268-0342
PO BOX 680343, SAN ANTONIO, TX 78268-0343
PO BOX 680344, SAN ANTONIO, TX 78268-0344
PO BOX 680345, SAN ANTONIO, TX 78268-0345
PO BOX 680346, SAN ANTONIO, TX 78268-0346
PO BOX 680347, SAN ANTONIO, TX 78268-0347
PO BOX 680348, SAN ANTONIO, TX 78268-0348
PO BOX 680349, SAN ANTONIO, TX 78268-0349
PO BOX 680350, SAN ANTONIO, TX 78268-0350
PO BOX 680351, SAN ANTONIO, TX 78268-0351
PO BOX 680352, SAN ANTONIO, TX 78268-0352
PO BOX 680353, SAN ANTONIO, TX 78268-0353
PO BOX 680354, SAN ANTONIO, TX 78268-0354
PO BOX 680355, SAN ANTONIO, TX 78268-0355
PO BOX 680356, SAN ANTONIO, TX 78268-0356
PO BOX 680357, SAN ANTONIO, TX 78268-0357
PO BOX 680358, SAN ANTONIO, TX 78268-0358
PO BOX 680359, SAN ANTONIO, TX 78268-0359
PO BOX 680360, SAN ANTONIO, TX 78268-0360
PO BOX 680361, SAN ANTONIO, TX 78268-0361
PO BOX 680362, SAN ANTONIO, TX 78268-0362
PO BOX 680363, SAN ANTONIO, TX 78268-0363
PO BOX 680364, SAN ANTONIO, TX 78268-0364
PO BOX 680365, SAN ANTONIO, TX 78268-0365
PO BOX 680366, SAN ANTONIO, TX 78268-0366
PO BOX 680367, SAN ANTONIO, TX 78268-0367
PO BOX 680368, SAN ANTONIO, TX 78268-0368
PO BOX 680369, SAN ANTONIO, TX 78268-0369
PO BOX 680370, SAN ANTONIO, TX 78268-0370
PO BOX 680371, SAN ANTONIO, TX 78268-0371
PO BOX 680372, SAN ANTONIO, TX 78268-0372
PO BOX 680373, SAN ANTONIO, TX 78268-0373
PO BOX 680374, SAN ANTONIO, TX 78268-0374
PO BOX 680375, SAN ANTONIO, TX 78268-0375
PO BOX 680376, SAN ANTONIO, TX 78268-0376
PO BOX 680377, SAN ANTONIO, TX 78268-0377
PO BOX 680378, SAN ANTONIO, TX 78268-0378
PO BOX 680379, SAN ANTONIO, TX 78268-0379
PO BOX 680380, SAN ANTONIO, TX 78268-0380
PO BOX 680381, SAN ANTONIO, TX 78268-0381
PO BOX 680382, SAN ANTONIO, TX 78268-0382
PO BOX 680383, SAN ANTONIO, TX 78268-0383
PO BOX 680384, SAN ANTONIO, TX 78268-0384
PO BOX 680385, SAN ANTONIO, TX 78268-0385
PO BOX 680386, SAN ANTONIO, TX 78268-0386
PO BOX 680387, SAN ANTONIO, TX 78268-0387
PO BOX 680388, SAN ANTONIO, TX 78268-0388
PO BOX 680389, SAN ANTONIO, TX 78268-0389
PO BOX 680390, SAN ANTONIO, TX 78268-0390
PO BOX 680391, SAN ANTONIO, TX 78268-0391
PO BOX 680392, SAN ANTONIO, TX 78268-0392
PO BOX 680393, SAN ANTONIO, TX 78268-0393
PO BOX 680394, SAN ANTONIO, TX 78268-0394
PO BOX 680395, SAN ANTONIO, TX 78268-0395
PO BOX 680396, SAN ANTONIO, TX 78268-0396
PO BOX 680397, SAN ANTONIO, TX 78268-0397
PO BOX 680398, SAN ANTONIO, TX 78268-0398
PO BOX 680399, SAN ANTONIO, TX 78268-0399
PO BOX 680400, SAN ANTONIO, TX 78268-0400
PO BOX 680401, SAN ANTONIO, TX 78268-0401
PO BOX 680402, SAN ANTONIO, TX 78268-0402
PO BOX 680403, SAN ANTONIO, TX 78268-0403
PO BOX 680404, SAN ANTONIO, TX 78268-0404
PO BOX 680405, SAN ANTONIO, TX 78268-0405
PO BOX 680406, SAN ANTONIO, TX 78268-0406
PO BOX 680407, SAN ANTONIO, TX 78268-0407
PO BOX 680408, SAN ANTONIO, TX 78268-0408
PO BOX 680409, SAN ANTONIO, TX 78268-0409
PO BOX 680410, SAN ANTONIO, TX 78268-0410
PO BOX 680411, SAN ANTONIO, TX 78268-0411
PO BOX 680412, SAN ANTONIO, TX 78268-0412
PO BOX 680413, SAN ANTONIO, TX 78268-0413
PO BOX 680414, SAN ANTONIO, TX 78268-0414
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