Birch township is located in Beltrami County, Minnesota. Birch township has a 2026 population of 92. Birch township is currently declining at a rate of -1.08% annually and its population has decreased by -4.17% since the most recent census, which recorded a population of 96 in 2020.
The median household income in Birch township is $38,750 with a poverty rate of 10%. The median age in Birch township is 59.5 years: 59.5 years for males, and 60.5 years for females. For every 100 females there are 130.8 males.