Winnett is a town located in Petroleum County, Montana. Winnett has a 2026 population of 197. It is also the county seat of Petroleum County. Winnett is currently declining at a rate of -3.43% annually but its population has increased by 4.79% since the most recent census, which recorded a population of 188 in 2020.
The median household income in Winnett is $49,583 with a poverty rate of 10.78%. The median age in Winnett is 55.4 years: 58.7 years for males, and 53.7 years for females. For every 100 females there are 108.2 males.