Below are a list of the cities located in Petroleum County, MT. There are 2 total unique zip codes in Petroleum County, Montana. The time zone for Petroleum County is the Mountain Daylight Time zone and they follow daylight savings time. The Federal Information Processing System (FIPS) Code for echo $county.' County, '.$state_abbrev ?> is 30069.
The population in Petroleum County, MT is currently 519. That is an increase of 5.06% vs the population of 494 in 2010.
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