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 2148, KANSAS CITY, KS 66110-0148
PO BOX 2149, KANSAS CITY, KS 66110-0149
PO BOX 2150, KANSAS CITY, KS 66110-0150
PO BOX 2151, KANSAS CITY, KS 66110-0151
PO BOX 2152, KANSAS CITY, KS 66110-0152
PO BOX 2153, KANSAS CITY, KS 66110-0153
PO BOX 2154, KANSAS CITY, KS 66110-0154
PO BOX 2155, KANSAS CITY, KS 66110-0155
PO BOX 2156, KANSAS CITY, KS 66110-0156
PO BOX 2157, KANSAS CITY, KS 66110-0157
PO BOX 2158, KANSAS CITY, KS 66110-0158
PO BOX 2159, KANSAS CITY, KS 66110-0159
PO BOX 2160, KANSAS CITY, KS 66110-0160
PO BOX 2161, KANSAS CITY, KS 66110-0161
PO BOX 2162, KANSAS CITY, KS 66110-0162
PO BOX 2163, KANSAS CITY, KS 66110-0163
PO BOX 2164, KANSAS CITY, KS 66110-0164
PO BOX 2165, KANSAS CITY, KS 66110-0165
PO BOX 2166, KANSAS CITY, KS 66110-0166
PO BOX 2167, KANSAS CITY, KS 66110-0167
PO BOX 2168, KANSAS CITY, KS 66110-0168
PO BOX 2169, KANSAS CITY, KS 66110-0169
PO BOX 2170, KANSAS CITY, KS 66110-0170
PO BOX 2171, KANSAS CITY, KS 66110-0171
PO BOX 2172, KANSAS CITY, KS 66110-0172
PO BOX 2173, KANSAS CITY, KS 66110-0173
PO BOX 2174, KANSAS CITY, KS 66110-0174
PO BOX 2175, KANSAS CITY, KS 66110-0175
PO BOX 2176, KANSAS CITY, KS 66110-0176
PO BOX 2177, KANSAS CITY, KS 66110-0177
PO BOX 2178, KANSAS CITY, KS 66110-0178
PO BOX 2179, KANSAS CITY, KS 66110-0179
PO BOX 2180, KANSAS CITY, KS 66110-0180
PO BOX 2181, KANSAS CITY, KS 66110-0181
PO BOX 2182, KANSAS CITY, KS 66110-0182
PO BOX 2183, KANSAS CITY, KS 66110-0183
PO BOX 2184, KANSAS CITY, KS 66110-0184
PO BOX 2185, KANSAS CITY, KS 66110-0185
PO BOX 2186, KANSAS CITY, KS 66110-0186
PO BOX 2187, KANSAS CITY, KS 66110-0187
PO BOX 2188, KANSAS CITY, KS 66110-0188
PO BOX 2189, KANSAS CITY, KS 66110-0189
PO BOX 2190, KANSAS CITY, KS 66110-0190
PO BOX 2191, KANSAS CITY, KS 66110-0191
PO BOX 2192, KANSAS CITY, KS 66110-0192
PO BOX 2193, KANSAS CITY, KS 66110-0193
PO BOX 2194, KANSAS CITY, KS 66110-0194
PO BOX 2195, KANSAS CITY, KS 66110-0195
PO BOX 2196, KANSAS CITY, KS 66110-0196
PO BOX 2197, KANSAS CITY, KS 66110-0197
PO BOX 2198, KANSAS CITY, KS 66110-0198
PO BOX 2199, KANSAS CITY, KS 66110-0199
PO BOX 2200, KANSAS CITY, KS 66110-0200
PO BOX 2201, KANSAS CITY, KS 66110-0201
PO BOX 2202, KANSAS CITY, KS 66110-0202
PO BOX 2203, KANSAS CITY, KS 66110-0203
PO BOX 2204, KANSAS CITY, KS 66110-0204
PO BOX 2205, KANSAS CITY, KS 66110-0205
PO BOX 2206, KANSAS CITY, KS 66110-0206
PO BOX 2207, KANSAS CITY, KS 66110-0207
PO BOX 2208, KANSAS CITY, KS 66110-0208
PO BOX 2209, KANSAS CITY, KS 66110-0209
PO BOX 2210, KANSAS CITY, KS 66110-0210
PO BOX 2211, KANSAS CITY, KS 66110-0211
PO BOX 2212, KANSAS CITY, KS 66110-0212
PO BOX 2213, KANSAS CITY, KS 66110-0213
PO BOX 2214, KANSAS CITY, KS 66110-0214
PO BOX 2215, KANSAS CITY, KS 66110-0215
PO BOX 2216, KANSAS CITY, KS 66110-0216
PO BOX 2217, KANSAS CITY, KS 66110-0217
PO BOX 2218, KANSAS CITY, KS 66110-0218
PO BOX 2219, KANSAS CITY, KS 66110-0219
PO BOX 2220, KANSAS CITY, KS 66110-0220
PO BOX 2221, KANSAS CITY, KS 66110-0221
PO BOX 2222, KANSAS CITY, KS 66110-0222
PO BOX 2223, KANSAS CITY, KS 66110-0223
PO BOX 2224, KANSAS CITY, KS 66110-0224
PO BOX 2225, KANSAS CITY, KS 66110-0225
PO BOX 2226, KANSAS CITY, KS 66110-0226
PO BOX 2227, KANSAS CITY, KS 66110-0227
PO BOX 2228, KANSAS CITY, KS 66110-0228
PO BOX 2229, KANSAS CITY, KS 66110-0229
PO BOX 2230, KANSAS CITY, KS 66110-0230
PO BOX 2231, KANSAS CITY, KS 66110-0231
PO BOX 2232, KANSAS CITY, KS 66110-0232
PO BOX 2233, KANSAS CITY, KS 66110-0233
PO BOX 2234, KANSAS CITY, KS 66110-0234
PO BOX 2235, KANSAS CITY, KS 66110-0235
PO BOX 2236, KANSAS CITY, KS 66110-0236
PO BOX 2237, KANSAS CITY, KS 66110-0237
PO BOX 2238, KANSAS CITY, KS 66110-0238
PO BOX 2239, KANSAS CITY, KS 66110-0239
PO BOX 2240, KANSAS CITY, KS 66110-0240
PO BOX 2241, KANSAS CITY, KS 66110-0241
PO BOX 2242, KANSAS CITY, KS 66110-0242
PO BOX 2243, KANSAS CITY, KS 66110-0243
PO BOX 2244, KANSAS CITY, KS 66110-0244
PO BOX 2245, KANSAS CITY, KS 66110-0245
PO BOX 2246, KANSAS CITY, KS 66110-0246
PO BOX 2247, KANSAS CITY, KS 66110-0247
PO BOX 2248, KANSAS CITY, KS 66110-0248
PO BOX 2249, KANSAS CITY, KS 66110-0249
PO BOX 2250, KANSAS CITY, KS 66110-0250
PO BOX 2251, KANSAS CITY, KS 66110-0251
PO BOX 2252, KANSAS CITY, KS 66110-0252
PO BOX 2253, KANSAS CITY, KS 66110-0253
PO BOX 2254, KANSAS CITY, KS 66110-0254
PO BOX 2255, KANSAS CITY, KS 66110-0255
PO BOX 2256, KANSAS CITY, KS 66110-0256
PO BOX 2257, KANSAS CITY, KS 66110-0257
PO BOX 2258, KANSAS CITY, KS 66110-0258
PO BOX 2259, KANSAS CITY, KS 66110-0259
PO BOX 2260, KANSAS CITY, KS 66110-0260
PO BOX 2261, KANSAS CITY, KS 66110-0261
PO BOX 2262, KANSAS CITY, KS 66110-0262
PO BOX 2263, KANSAS CITY, KS 66110-0263
PO BOX 2264, KANSAS CITY, KS 66110-0264
PO BOX 2265, KANSAS CITY, KS 66110-0265
PO BOX 2266, KANSAS CITY, KS 66110-0266
PO BOX 2267, KANSAS CITY, KS 66110-0267
PO BOX 2268, KANSAS CITY, KS 66110-0268
PO BOX 2269, KANSAS CITY, KS 66110-0269
PO BOX 2270, KANSAS CITY, KS 66110-0270
PO BOX 2271, KANSAS CITY, KS 66110-0271
PO BOX 2272, KANSAS CITY, KS 66110-0272
PO BOX 2273, KANSAS CITY, KS 66110-0273
PO BOX 2274, KANSAS CITY, KS 66110-0274
PO BOX 2275, KANSAS CITY, KS 66110-0275
PO BOX 2276, KANSAS CITY, KS 66110-0276
PO BOX 2277, KANSAS CITY, KS 66110-0277
PO BOX 2278, KANSAS CITY, KS 66110-0278
PO BOX 2279, KANSAS CITY, KS 66110-0279
PO BOX 2280, KANSAS CITY, KS 66110-0280
PO BOX 2281, KANSAS CITY, KS 66110-0281
PO BOX 2282, KANSAS CITY, KS 66110-0282
PO BOX 2283, KANSAS CITY, KS 66110-0283
PO BOX 2284, KANSAS CITY, KS 66110-0284
PO BOX 2285, KANSAS CITY, KS 66110-0285
PO BOX 2286, KANSAS CITY, KS 66110-0286
PO BOX 2287, KANSAS CITY, KS 66110-0287
PO BOX 2288, KANSAS CITY, KS 66110-0288
PO BOX 2289, KANSAS CITY, KS 66110-0289
PO BOX 2290, KANSAS CITY, KS 66110-0290
PO BOX 2291, KANSAS CITY, KS 66110-0291
PO BOX 2292, KANSAS CITY, KS 66110-0292
PO BOX 2293, KANSAS CITY, KS 66110-0293
PO BOX 2294, KANSAS CITY, KS 66110-0294
PO BOX 2295, KANSAS CITY, KS 66110-0295
PO BOX 2296, KANSAS CITY, KS 66110-0296
PO BOX 2297, KANSAS CITY, KS 66110-0297
PO BOX 2298, KANSAS CITY, KS 66110-0298
PO BOX 2299, KANSAS CITY, KS 66110-0299
PO BOX 2300, KANSAS CITY, KS 66110-0300
PO BOX 2301, KANSAS CITY, KS 66110-0301
PO BOX 2302, KANSAS CITY, KS 66110-0302
PO BOX 2303, KANSAS CITY, KS 66110-0303
PO BOX 2304, KANSAS CITY, KS 66110-0304
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