| Jeff | |
| Settlement Type: | Census-designated place (CDP) |
| Pushpin Map: | USA Kentucky#USA |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location within the state of Kentucky |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Kentucky |
| Subdivision Type2: | County |
| Subdivision Name2: | Perry |
| Government Type: | Jeff |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 2.04 |
| Area Land Km2: | 1.96 |
| Area Water Km2: | 0.08 |
| Area Total Sq Mi: | 0.79 |
| Area Land Sq Mi: | 0.76 |
| Area Water Sq Mi: | 0.03 |
| Population As Of: | 2020 |
| Population Total: | 293 |
| Population Density Km2: | 149.47 |
| Population Density Sq Mi: | 387.05 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 915 |
| Coordinates: | 37.205°N -83.1364°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 41751 |
| Area Code: | 606 |
| Blank Name: | FIPS code |
| Blank Info: | 21-40204 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 516758 |
Jeff is a census-designated place and coal town in Perry County, Kentucky, United States. Its population was 323 as of the 2010 census.[2]
A post office was established in the community in 1902 and named for the early settler Jefferson Combs.[3]