Mellen is a city located in Ashland County, Wisconsin. Mellen has a 2026 population of 686. Mellen is currently growing at a rate of 1.18% annually but its population has decreased by -1.58% since the most recent census, which recorded a population of 697 in 2020.
The median household income in Mellen is $41,875 with a poverty rate of 21.33%. The median age in Mellen is 45.2 years: 47.3 years for males, and 45.1 years for females. For every 100 females there are 72.4 males.