|Elevation||797 ft (243 m)|
|Time zone||Eastern (EST) (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|GNIS feature ID||332836|
Rex (also known as Hollingsworth) is an unincorporated community in Clayton County, Georgia, United States. Its elevation is 797 feet (243 m). Although Rex is unincorporated, it has a post office, with the ZIP code of 30273; the ZCTA for ZIP Code 30273 had a population of 11,412 at the 2000 census.