Petros (/piːˈtrɒs/ pee-TROSS) is an unincorporated community and census-designated place (CDP) in Morgan County, Tennessee, United States, located on State Route 116. Its population was 459 at the 2020 census.^[3] Petros has its own post office, with the ZIP code 37845.

Quick Facts Country, State ...

Petros, Tennessee
Census-designated place
Main Street
Petros, Tennessee
Coordinates: 36°06′10″N 84°27′01″W
Country	United States
State	Tennessee
County	Morgan
Area [1]
• Total	3.94 sq mi (10.20 km2)
• Land	3.94 sq mi (10.20 km2)
• Water	0.00 sq mi (0.00 km2)
Elevation [2]	1,437 ft (438 m)
Population  (2020)[3]
• Total	459
• Density	116.50/sq mi (44.98/km2)
Time zone	UTC-5 (Eastern (EST))
• Summer (DST)	UTC-4 (EDT)
ZIP code	37845[4]
Area code	423
GNIS feature ID	2586077[2]

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Petros is historically a coal mining town and was also the site of the now closed Brushy Mountain State Penitentiary. Some of the town and coal mine scenes for the movie October Sky were filmed there.^{[citation needed]}