17.9% of the population for whom poverty status is determined in Grass Range High School District, MT (117 out of 653 people) live below the poverty line, a number that is higher than the national average of 12.5%. The largest demographic living in poverty are Females 65 - 74, followed by Males 55 - 64 and then Females 18 - 24.

The most common racial or ethnic group living below the poverty line in Grass Range High School District, MT is White, followed by Native American and Hispanic.

The Census Bureau uses a set of money income thresholds that vary by family size and composition to determine who classifies as impoverished. If a family's total income is less than the family's threshold than that family and every individual in it is considered to be living in poverty.