Mean Commuting Time for Workers (5-year estimate) in Petroleum County, MT was 16.49123 Minutes in January of 2022, according to the United States Federal Reserve. Historically, Mean Commuting Time for Workers (5-year estimate) in Petroleum County, MT reached a record high of 18.75000 in January of 2015 and a record low of 9.86111 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for Mean Commuting Time for Workers (5-year estimate) in Petroleum County, MT - last updated from the United States Federal Reserve on May of 2024.