First three digits · Kentucky
ZIP Codes Starting with
36 ZIP codes start with 422, sorted at the Nashville, TN (SCF 370) sectional center (USPS labeling list L005, effective October 1, 2026) in Kentucky: 30 residential ZIP codes across 9 counties and 6 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 422 mean?
The first digit, 4, is one of ten national areas (Indiana, Kentucky, Michigan and Ohio). The first three, 422, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 422 to the Nashville, TN (SCF 370) facility. The last two digits pick the delivery area. By residents, the largest town names among the 422 ZIP codes are Hopkinsville, Fort Campbell, Russellville, Cadiz, Oak Grove and Morgantown.
The same facility sorts 7 prefixes, 326 ZIP codes in all: 370, 371, 372, 384, 385, 421, 422.
Where are the 422 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 422
| County | ||||||
|---|---|---|---|---|---|---|
| 42201 | Aberdeen | Butler County | PO Box or unique | – | – | – |
| 42202 | Adairville | Logan County | 1,958 | 30 | $63k | $139k |
| 42204 | Allensville | Todd County | 725 | 17 | $62k | $240k |
| 42206 | Auburn | Logan County | 5,897 | 52 | $67k | $168k |
| 42207 | Bee Spring | Edmonson County | 927 | 48 | $46k | $153k |
| 42210 | Brownsville | Edmonson County | 4,231 | 51 | $48k | $142k |
| 42211 | Cadiz | Trigg County | 13,475 | 47 | $60k | $210k |
| 42214 | Center | Metcalfe County | 749 | 35 | $47k | $130k |
| 42215 | Cerulean | Christian County | 1,319 | 23 | $83k | $201k |
| 42216 | Clifty | Todd County | PO Box or unique | – | – | – |
| 42217 | Crofton | Christian County | 3,799 | 24 | $65k | $162k |
| 42219 | Dunbar | Butler County | PO Box or unique | – | – | – |
| 42220 | Elkton | Todd County | 5,947 | 35 | $61k | $153k |
| 42221 | Fairview | Christian County | PO Box or unique | – | – | – |
| 42223 | Fort Campbell | Montgomery County | 19,006 | 875 | $62k | $268k |
| 42232 | Gracey | Christian County | 711 | 32 | $90k | $227k |
| 42234 | Guthrie | Todd County | 2,487 | 50 | $58k | $165k |
| 42236 | Herndon | Christian County | 931 | 15 | $69k | $118k |
| 42240 | Hopkinsville | Christian County | 41,415 | 149 | $52k | $174k |
| 42241 | Hopkinsville | Christian County | PO Box or unique | – | – | – |
| 42252 | Jetson | Butler County | 53 | 19 | – | – |
| 42254 | La Fayette | Christian County | 227 | 24 | $47k | $99k |
| 42256 | Lewisburg | Logan County | 5,124 | 26 | $59k | $140k |
| 42259 | Mammoth Cave | Edmonson County | 1,090 | 15 | $34k | $148k |
| 42261 | Morgantown | Butler County | 9,641 | 33 | $53k | $113k |
| 42262 | Oak Grove | Christian County | 9,665 | 310 | $52k | $157k |
| 42265 | Olmstead | Logan County | 641 | 12 | – | $369k |
| 42266 | Pembroke | Christian County | 2,956 | 41 | $71k | $230k |
| 42273 | Rochester | Butler County | 519 | 32 | $60k | – |
| 42274 | Rockfield | Warren County | 2,157 | 53 | $81k | $182k |
| 42275 | Roundhill | Butler County | 855 | 18 | $45k | $181k |
| 42276 | Russellville | Logan County | 16,044 | 78 | $57k | $167k |
| 42280 | Sharon Grove | Todd County | 338 | 14 | – | $112k |
| 42285 | Sweeden | Edmonson County | 531 | 64 | $54k | $176k |
| 42286 | Trenton | Todd County | 2,163 | 31 | $66k | $276k |
| 42288 | Woodbury | Butler County | PO Box or unique | – | – | – |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.