Petrovsky District (Russian: Петро́вский райо́н) is an administrative district (raion), one of the twenty-six in Stavropol Krai, Russia. Municipally, it is incorporated as Petrovsky Municipal District. It is located in the center of the krai. The area of the district is 2,741 square kilometers (1,058 sq mi). Its administrative center is the town of Svetlograd. Population: 78,067 (2010 Census); 82,449 (2002 Census); 76,718 (1989 Census). The population of Svetlograd accounts for 49.3% of the district's total population.