Petrolia is located in Clay County, TX. The population is 596, making Petrolia the 2nd largest city in Clay County.
There are 2 public schools in Petrolia with an average Homefacts rating of B-. The total crime rate for Petrolia is very low , and there are 7 registered sex offenders residing in the city. Unemployment in Petrolia is moderate and the median home sales price is $0. Detailed and up-to-date Petrolia property reports are available for any property address.