Single-Parent Households with Children as a Percentage of Households with Children (5-year estimate) in Petroleum County, MT was 9.52% in January of 2022, according to the United States Federal Reserve. Historically, Single-Parent Households with Children as a Percentage of Households with Children (5-year estimate) in Petroleum County, MT reached a record high of 35.56 in January of 2014 and a record low of 0.00 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for Single-Parent Households with Children as a Percentage of Households with Children (5-year estimate) in Petroleum County, MT - last updated from the United States Federal Reserve on May of 2024.