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 2181, KINGSPORT, TN 37662-2181
PO BOX 2182, KINGSPORT, TN 37662-2182
PO BOX 2183, KINGSPORT, TN 37662-2183
PO BOX 2184, KINGSPORT, TN 37662-2184
PO BOX 2185, KINGSPORT, TN 37662-2185
PO BOX 2186, KINGSPORT, TN 37662-2186
PO BOX 2187, KINGSPORT, TN 37662-2187
PO BOX 2188, KINGSPORT, TN 37662-2188
PO BOX 2189, KINGSPORT, TN 37662-2189
PO BOX 2190, KINGSPORT, TN 37662-2190
PO BOX 2191, KINGSPORT, TN 37662-2191
PO BOX 2192, KINGSPORT, TN 37662-2192
PO BOX 2193, KINGSPORT, TN 37662-2193
PO BOX 2194, KINGSPORT, TN 37662-2194
PO BOX 2195, KINGSPORT, TN 37662-2195
PO BOX 2196, KINGSPORT, TN 37662-2196
PO BOX 2197, KINGSPORT, TN 37662-2197
PO BOX 2198, KINGSPORT, TN 37662-2198
PO BOX 2199, KINGSPORT, TN 37662-2199
PO BOX 2200, KINGSPORT, TN 37662-2200
PO BOX 2201, KINGSPORT, TN 37662-2201
PO BOX 2202, KINGSPORT, TN 37662-2202
PO BOX 2203, KINGSPORT, TN 37662-2203
PO BOX 2204, KINGSPORT, TN 37662-2204
PO BOX 2205, KINGSPORT, TN 37662-2205
PO BOX 2206, KINGSPORT, TN 37662-2206
PO BOX 2207, KINGSPORT, TN 37662-2207
PO BOX 2208, KINGSPORT, TN 37662-2208
PO BOX 2209, KINGSPORT, TN 37662-2209
PO BOX 2210, KINGSPORT, TN 37662-2210
PO BOX 2211, KINGSPORT, TN 37662-2211
PO BOX 2212, KINGSPORT, TN 37662-2212
PO BOX 2213, KINGSPORT, TN 37662-2213
PO BOX 2214, KINGSPORT, TN 37662-2214
PO BOX 2215, KINGSPORT, TN 37662-2215
PO BOX 2216, KINGSPORT, TN 37662-2216
PO BOX 2217, KINGSPORT, TN 37662-2217
PO BOX 2218, KINGSPORT, TN 37662-2218
PO BOX 2219, KINGSPORT, TN 37662-2219
PO BOX 2220, KINGSPORT, TN 37662-2220
PO BOX 2221, KINGSPORT, TN 37662-2221
PO BOX 2222, KINGSPORT, TN 37662-2222
PO BOX 2223, KINGSPORT, TN 37662-2223
PO BOX 2224, KINGSPORT, TN 37662-2224
PO BOX 2225, KINGSPORT, TN 37662-2225
PO BOX 2226, KINGSPORT, TN 37662-2226
PO BOX 2227, KINGSPORT, TN 37662-2227
PO BOX 2228, KINGSPORT, TN 37662-2228
PO BOX 2229, KINGSPORT, TN 37662-2229
PO BOX 2230, KINGSPORT, TN 37662-2230
PO BOX 2231, KINGSPORT, TN 37662-2231
PO BOX 2232, KINGSPORT, TN 37662-2232
PO BOX 2233, KINGSPORT, TN 37662-2233
PO BOX 2234, KINGSPORT, TN 37662-2234
PO BOX 2235, KINGSPORT, TN 37662-2235
PO BOX 2236, KINGSPORT, TN 37662-2236
PO BOX 2237, KINGSPORT, TN 37662-2237
PO BOX 2238, KINGSPORT, TN 37662-2238
PO BOX 2239, KINGSPORT, TN 37662-2239
PO BOX 2240, KINGSPORT, TN 37662-2240
PO BOX 2241, KINGSPORT, TN 37662-2241
PO BOX 2242, KINGSPORT, TN 37662-2242
PO BOX 2243, KINGSPORT, TN 37662-2243
PO BOX 2244, KINGSPORT, TN 37662-2244
PO BOX 2245, KINGSPORT, TN 37662-2245
PO BOX 2246, KINGSPORT, TN 37662-2246
PO BOX 2247, KINGSPORT, TN 37662-2247
PO BOX 2248, KINGSPORT, TN 37662-2248
PO BOX 2249, KINGSPORT, TN 37662-2249
PO BOX 2250, KINGSPORT, TN 37662-2250
PO BOX 2251, KINGSPORT, TN 37662-2251
PO BOX 2252, KINGSPORT, TN 37662-2252
PO BOX 2253, KINGSPORT, TN 37662-2253
PO BOX 2254, KINGSPORT, TN 37662-2254
PO BOX 2255, KINGSPORT, TN 37662-2255
PO BOX 2256, KINGSPORT, TN 37662-2256
PO BOX 2257, KINGSPORT, TN 37662-2257
PO BOX 2258, KINGSPORT, TN 37662-2258
PO BOX 2259, KINGSPORT, TN 37662-2259
PO BOX 2260, KINGSPORT, TN 37662-2260
PO BOX 2261, KINGSPORT, TN 37662-2261
PO BOX 2262, KINGSPORT, TN 37662-2262
PO BOX 2263, KINGSPORT, TN 37662-2263
PO BOX 2264, KINGSPORT, TN 37662-2264
PO BOX 2265, KINGSPORT, TN 37662-2265
PO BOX 2266, KINGSPORT, TN 37662-2266
PO BOX 2267, KINGSPORT, TN 37662-2267
PO BOX 2268, KINGSPORT, TN 37662-2268
PO BOX 2269, KINGSPORT, TN 37662-2269
PO BOX 2270, KINGSPORT, TN 37662-2270
PO BOX 2271, KINGSPORT, TN 37662-2271
PO BOX 2272, KINGSPORT, TN 37662-2272
PO BOX 2273, KINGSPORT, TN 37662-2273
PO BOX 2274, KINGSPORT, TN 37662-2274
PO BOX 2275, KINGSPORT, TN 37662-2275
PO BOX 2276, KINGSPORT, TN 37662-2276
PO BOX 2277, KINGSPORT, TN 37662-2277
PO BOX 2278, KINGSPORT, TN 37662-2278
PO BOX 2279, KINGSPORT, TN 37662-2279
PO BOX 2280, KINGSPORT, TN 37662-2280
PO BOX 2281, KINGSPORT, TN 37662-2281
PO BOX 2282, KINGSPORT, TN 37662-2282
PO BOX 2283, KINGSPORT, TN 37662-2283
PO BOX 2284, KINGSPORT, TN 37662-2284
PO BOX 2285, KINGSPORT, TN 37662-2285
PO BOX 2286, KINGSPORT, TN 37662-2286
PO BOX 2287, KINGSPORT, TN 37662-2287
PO BOX 2288, KINGSPORT, TN 37662-2288
PO BOX 2289, KINGSPORT, TN 37662-2289
PO BOX 2290, KINGSPORT, TN 37662-2290
PO BOX 2291, KINGSPORT, TN 37662-2291
PO BOX 2292, KINGSPORT, TN 37662-2292
PO BOX 2293, KINGSPORT, TN 37662-2293
PO BOX 2294, KINGSPORT, TN 37662-2294
PO BOX 2295, KINGSPORT, TN 37662-2295
PO BOX 2296, KINGSPORT, TN 37662-2296
PO BOX 2297, KINGSPORT, TN 37662-2297
PO BOX 2298, KINGSPORT, TN 37662-2298
PO BOX 2299, KINGSPORT, TN 37662-2299
PO BOX 2300, KINGSPORT, TN 37662-2300
PO BOX 2301, KINGSPORT, TN 37662-2301
PO BOX 2302, KINGSPORT, TN 37662-2302
PO BOX 2303, KINGSPORT, TN 37662-2303
PO BOX 2304, KINGSPORT, TN 37662-2304
PO BOX 2305, KINGSPORT, TN 37662-2305
PO BOX 2306, KINGSPORT, TN 37662-2306
PO BOX 2307, KINGSPORT, TN 37662-2307
PO BOX 2308, KINGSPORT, TN 37662-2308
PO BOX 2309, KINGSPORT, TN 37662-2309
PO BOX 2310, KINGSPORT, TN 37662-2310
PO BOX 2311, KINGSPORT, TN 37662-2311
PO BOX 2312, KINGSPORT, TN 37662-2312
PO BOX 2313, KINGSPORT, TN 37662-2313
PO BOX 2314, KINGSPORT, TN 37662-2314
PO BOX 2315, KINGSPORT, TN 37662-2315
PO BOX 2316, KINGSPORT, TN 37662-2316
PO BOX 2317, KINGSPORT, TN 37662-2317
PO BOX 2318, KINGSPORT, TN 37662-2318
PO BOX 2319, KINGSPORT, TN 37662-2319
PO BOX 2320, KINGSPORT, TN 37662-2320
PO BOX 2321, KINGSPORT, TN 37662-2321
PO BOX 2322, KINGSPORT, TN 37662-2322
PO BOX 2323, KINGSPORT, TN 37662-2323
PO BOX 2324, KINGSPORT, TN 37662-2324
PO BOX 2325, KINGSPORT, TN 37662-2325
PO BOX 2326, KINGSPORT, TN 37662-2326
PO BOX 2327, KINGSPORT, TN 37662-2327
PO BOX 2328, KINGSPORT, TN 37662-2328
PO BOX 2329, KINGSPORT, TN 37662-2329
PO BOX 2330, KINGSPORT, TN 37662-2330
PO BOX 2331, KINGSPORT, TN 37662-2331
PO BOX 2332, KINGSPORT, TN 37662-2332
PO BOX 2333, KINGSPORT, TN 37662-2333
PO BOX 2334, KINGSPORT, TN 37662-2334
PO BOX 2335, KINGSPORT, TN 37662-2335
PO BOX 2336, KINGSPORT, TN 37662-2336
PO BOX 2337, KINGSPORT, TN 37662-2337
PO BOX 2338, KINGSPORT, TN 37662-2338
PO BOX 2339, KINGSPORT, TN 37662-2339
PO BOX 2340, KINGSPORT, TN 37662-2340
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