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 642294, PITTSBURGH, PA 15264-2294
PO BOX 642295, PITTSBURGH, PA 15264-2295
PO BOX 642296, PITTSBURGH, PA 15264-2296
PO BOX 642297, PITTSBURGH, PA 15264-2297
PO BOX 642298, PITTSBURGH, PA 15264-2298
PO BOX 642299, PITTSBURGH, PA 15264-2299
PO BOX 642300, PITTSBURGH, PA 15264-2300
PO BOX 642301, PITTSBURGH, PA 15264-2301
PO BOX 642302, PITTSBURGH, PA 15264-2302
PO BOX 642303, PITTSBURGH, PA 15264-2303
PO BOX 642304, PITTSBURGH, PA 15264-2304
PO BOX 642305, PITTSBURGH, PA 15264-2305
PO BOX 642306, PITTSBURGH, PA 15264-2306
PO BOX 642307, PITTSBURGH, PA 15264-2307
PO BOX 642308, PITTSBURGH, PA 15264-2308
PO BOX 642309, PITTSBURGH, PA 15264-2309
PO BOX 642310, PITTSBURGH, PA 15264-2310
PO BOX 642311, PITTSBURGH, PA 15264-2311
PO BOX 642312, PITTSBURGH, PA 15264-2312
PO BOX 642313, PITTSBURGH, PA 15264-2313
PO BOX 642314, PITTSBURGH, PA 15264-2314
PO BOX 642315, PITTSBURGH, PA 15264-2315
PO BOX 642316, PITTSBURGH, PA 15264-2316
PO BOX 642317, PITTSBURGH, PA 15264-2317
PO BOX 642318, PITTSBURGH, PA 15264-2318
PO BOX 642319, PITTSBURGH, PA 15264-2319
PO BOX 642320, PITTSBURGH, PA 15264-2320
PO BOX 642321, PITTSBURGH, PA 15264-2321
PO BOX 642322, PITTSBURGH, PA 15264-2322
PO BOX 642323, PITTSBURGH, PA 15264-2323
PO BOX 642324, PITTSBURGH, PA 15264-2324
PO BOX 642325, PITTSBURGH, PA 15264-2325
PO BOX 642326, PITTSBURGH, PA 15264-2326
PO BOX 642327, PITTSBURGH, PA 15264-2327
PO BOX 642328, PITTSBURGH, PA 15264-2328
PO BOX 642329, PITTSBURGH, PA 15264-2329
PO BOX 642330, PITTSBURGH, PA 15264-2330
PO BOX 642331, PITTSBURGH, PA 15264-2331
PO BOX 642332, PITTSBURGH, PA 15264-2332
PO BOX 642333, PITTSBURGH, PA 15264-2333
PO BOX 642334, PITTSBURGH, PA 15264-2334
PO BOX 642335, PITTSBURGH, PA 15264-2335
PO BOX 642336, PITTSBURGH, PA 15264-2336
PO BOX 642337, PITTSBURGH, PA 15264-2337
PO BOX 642338, PITTSBURGH, PA 15264-2338
PO BOX 642339, PITTSBURGH, PA 15264-2339
PO BOX 642340, PITTSBURGH, PA 15264-2340
PO BOX 642341, PITTSBURGH, PA 15264-2341
PO BOX 642342, PITTSBURGH, PA 15264-2342
PO BOX 642343, PITTSBURGH, PA 15264-2343
PO BOX 642344, PITTSBURGH, PA 15264-2344
PO BOX 642345, PITTSBURGH, PA 15264-2345
PO BOX 642346, PITTSBURGH, PA 15264-2346
PO BOX 642347, PITTSBURGH, PA 15264-2347
PO BOX 642348, PITTSBURGH, PA 15264-2348
PO BOX 642349, PITTSBURGH, PA 15264-2349
PO BOX 642350, PITTSBURGH, PA 15264-2350
PO BOX 642351, PITTSBURGH, PA 15264-2351
PO BOX 642352, PITTSBURGH, PA 15264-2352
PO BOX 642353, PITTSBURGH, PA 15264-2353
PO BOX 642354, PITTSBURGH, PA 15264-2354
PO BOX 642355, PITTSBURGH, PA 15264-2355
PO BOX 642356, PITTSBURGH, PA 15264-2356
PO BOX 642357, PITTSBURGH, PA 15264-2357
PO BOX 642358, PITTSBURGH, PA 15264-2358
PO BOX 642359, PITTSBURGH, PA 15264-2359
PO BOX 642360, PITTSBURGH, PA 15264-2360
PO BOX 642361, PITTSBURGH, PA 15264-2361
PO BOX 642362, PITTSBURGH, PA 15264-2362
PO BOX 642363, PITTSBURGH, PA 15264-2363
PO BOX 642364, PITTSBURGH, PA 15264-2364
PO BOX 642365, PITTSBURGH, PA 15264-2365
PO BOX 642366, PITTSBURGH, PA 15264-2366
PO BOX 642367, PITTSBURGH, PA 15264-2367
PO BOX 642368, PITTSBURGH, PA 15264-2368
PO BOX 642369, PITTSBURGH, PA 15264-2369
PO BOX 642370, PITTSBURGH, PA 15264-2370
PO BOX 642371, PITTSBURGH, PA 15264-2371
PO BOX 642372, PITTSBURGH, PA 15264-2372
PO BOX 642373, PITTSBURGH, PA 15264-2373
PO BOX 642374, PITTSBURGH, PA 15264-2374
PO BOX 642375, PITTSBURGH, PA 15264-2375
PO BOX 642376, PITTSBURGH, PA 15264-2376
PO BOX 642377, PITTSBURGH, PA 15264-2377
PO BOX 642378, PITTSBURGH, PA 15264-2378
PO BOX 642379, PITTSBURGH, PA 15264-2379
PO BOX 642380, PITTSBURGH, PA 15264-2380
PO BOX 642381, PITTSBURGH, PA 15264-2381
PO BOX 642382, PITTSBURGH, PA 15264-2382
PO BOX 642383, PITTSBURGH, PA 15264-2383
PO BOX 642384, PITTSBURGH, PA 15264-2384
PO BOX 642385, PITTSBURGH, PA 15264-2385
PO BOX 642386, PITTSBURGH, PA 15264-2386
PO BOX 642387, PITTSBURGH, PA 15264-2387
PO BOX 642388, PITTSBURGH, PA 15264-2388
PO BOX 642389, PITTSBURGH, PA 15264-2389
PO BOX 642390, PITTSBURGH, PA 15264-2390
PO BOX 642391, PITTSBURGH, PA 15264-2391
PO BOX 642392, PITTSBURGH, PA 15264-2392
PO BOX 642393, PITTSBURGH, PA 15264-2393
PO BOX 642394, PITTSBURGH, PA 15264-2394
PO BOX 642395, PITTSBURGH, PA 15264-2395
PO BOX 642396, PITTSBURGH, PA 15264-2396
PO BOX 642397, PITTSBURGH, PA 15264-2397
PO BOX 642398, PITTSBURGH, PA 15264-2398
PO BOX 642399, PITTSBURGH, PA 15264-2399
PO BOX 642400, PITTSBURGH, PA 15264-2400
PO BOX 642401, PITTSBURGH, PA 15264-2401
PO BOX 642402, PITTSBURGH, PA 15264-2402
PO BOX 642403, PITTSBURGH, PA 15264-2403
PO BOX 642404, PITTSBURGH, PA 15264-2404
PO BOX 642405, PITTSBURGH, PA 15264-2405
PO BOX 642406, PITTSBURGH, PA 15264-2406
PO BOX 642407, PITTSBURGH, PA 15264-2407
PO BOX 642408, PITTSBURGH, PA 15264-2408
PO BOX 642409, PITTSBURGH, PA 15264-2409
PO BOX 642410, PITTSBURGH, PA 15264-2410
PO BOX 642411, PITTSBURGH, PA 15264-2411
PO BOX 642412, PITTSBURGH, PA 15264-2412
PO BOX 642413, PITTSBURGH, PA 15264-2413
PO BOX 642414, PITTSBURGH, PA 15264-2414
PO BOX 642415, PITTSBURGH, PA 15264-2415
PO BOX 642416, PITTSBURGH, PA 15264-2416
PO BOX 642417, PITTSBURGH, PA 15264-2417
PO BOX 642418, PITTSBURGH, PA 15264-2418
PO BOX 642419, PITTSBURGH, PA 15264-2419
PO BOX 642420, PITTSBURGH, PA 15264-2420
PO BOX 642421, PITTSBURGH, PA 15264-2421
PO BOX 642422, PITTSBURGH, PA 15264-2422
PO BOX 642423, PITTSBURGH, PA 15264-2423
PO BOX 642424, PITTSBURGH, PA 15264-2424
PO BOX 642425, PITTSBURGH, PA 15264-2425
PO BOX 642426, PITTSBURGH, PA 15264-2426
PO BOX 642427, PITTSBURGH, PA 15264-2427
PO BOX 642428, PITTSBURGH, PA 15264-2428
PO BOX 642429, PITTSBURGH, PA 15264-2429
PO BOX 642430, PITTSBURGH, PA 15264-2430
PO BOX 642431, PITTSBURGH, PA 15264-2431
PO BOX 642432, PITTSBURGH, PA 15264-2432
PO BOX 642433, PITTSBURGH, PA 15264-2433
PO BOX 642434, PITTSBURGH, PA 15264-2434
PO BOX 642435, PITTSBURGH, PA 15264-2435
PO BOX 642436, PITTSBURGH, PA 15264-2436
PO BOX 642437, PITTSBURGH, PA 15264-2437
PO BOX 642438, PITTSBURGH, PA 15264-2438
PO BOX 642439, PITTSBURGH, PA 15264-2439
PO BOX 642440, PITTSBURGH, PA 15264-2440
PO BOX 642441, PITTSBURGH, PA 15264-2441
PO BOX 642442, PITTSBURGH, PA 15264-2442
PO BOX 642443, PITTSBURGH, PA 15264-2443
PO BOX 642444, PITTSBURGH, PA 15264-2444
PO BOX 642445, PITTSBURGH, PA 15264-2445
PO BOX 642446, PITTSBURGH, PA 15264-2446
PO BOX 642447, PITTSBURGH, PA 15264-2447
PO BOX 642448, PITTSBURGH, PA 15264-2448
PO BOX 642449, PITTSBURGH, PA 15264-2449
PO BOX 642450, PITTSBURGH, PA 15264-2450
PO BOX 642451, PITTSBURGH, PA 15264-2451
PO BOX 642452, PITTSBURGH, PA 15264-2452
PO BOX 642453, PITTSBURGH, PA 15264-2453
PO BOX 642454, PITTSBURGH, PA 15264-2454
PO BOX 642455, PITTSBURGH, PA 15264-2455
PO BOX 642456, PITTSBURGH, PA 15264-2456
PO BOX 642457, PITTSBURGH, PA 15264-2457
PO BOX 642458, PITTSBURGH, PA 15264-2458
PO BOX 642459, PITTSBURGH, PA 15264-2459
PO BOX 642460, PITTSBURGH, PA 15264-2460
PO BOX 642461, PITTSBURGH, PA 15264-2461
PO BOX 642462, PITTSBURGH, PA 15264-2462
PO BOX 642463, PITTSBURGH, PA 15264-2463
PO BOX 642464, PITTSBURGH, PA 15264-2464
PO BOX 642465, PITTSBURGH, PA 15264-2465
PO BOX 642466, PITTSBURGH, PA 15264-2466
PO BOX 642467, PITTSBURGH, PA 15264-2467
PO BOX 642468, PITTSBURGH, PA 15264-2468
PO BOX 642469, PITTSBURGH, PA 15264-2469
PO BOX 642470, PITTSBURGH, PA 15264-2470
PO BOX 642471, PITTSBURGH, PA 15264-2471
PO BOX 642472, PITTSBURGH, PA 15264-2472
PO BOX 642473, PITTSBURGH, PA 15264-2473
PO BOX 642474, PITTSBURGH, PA 15264-2474
PO BOX 642475, PITTSBURGH, PA 15264-2475
PO BOX 642476, PITTSBURGH, PA 15264-2476
PO BOX 642477, PITTSBURGH, PA 15264-2477
PO BOX 642478, PITTSBURGH, PA 15264-2478
PO BOX 642479, PITTSBURGH, PA 15264-2479
PO BOX 642480, PITTSBURGH, PA 15264-2480
PO BOX 642481, PITTSBURGH, PA 15264-2481
PO BOX 642482, PITTSBURGH, PA 15264-2482
PO BOX 642483, PITTSBURGH, PA 15264-2483
PO BOX 642484, PITTSBURGH, PA 15264-2484
PO BOX 642485, PITTSBURGH, PA 15264-2485
PO BOX 642486, PITTSBURGH, PA 15264-2486
PO BOX 642487, PITTSBURGH, PA 15264-2487
PO BOX 642488, PITTSBURGH, PA 15264-2488
PO BOX 642489, PITTSBURGH, PA 15264-2489
PO BOX 642490, PITTSBURGH, PA 15264-2490
PO BOX 642491, PITTSBURGH, PA 15264-2491
PO BOX 642492, PITTSBURGH, PA 15264-2492
PO BOX 642493, PITTSBURGH, PA 15264-2493
PO BOX 642494, PITTSBURGH, PA 15264-2494
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