Menahga was platted in 1891, and named for the Ojibwe language word meaning "there are blueberries". A post office has been in operation at Menahga since 1891.
As of the census of 2010, there were 1,306 people, 569 households, and 301 families living in the city. The population density was. There were 654 housing units at an average density of. The racial makeup of the city was 97.8% White, 0.5% African American, 0.6% Native American, 0.2% Asian, 0.3% from other races, and 0.7% from two or more races. Hispanic or Latino of any race were 1.1% of the population. There were 569 households of which 25.0% had children under the age of 18 living with them, 39.5% were married couplesliving together, 8.3% had a female householder with no husband present, 5.1% had a male householder with no wife present, and 47.1% were non-families. 42.0% of all households were made up of individuals and 24.7% had someone living alone who was 65 years of age or older. The average household size was 2.18 and the average family size was 3.01. The median age in the city was 44.8 years. 24.3% of residents were under the age of 18; 6.2% were between the ages of 18 and 24; 19.8% were from 25 to 44; 21.7% were from 45 to 64; and 28.2% were 65 years of age or older. The gender makeup of the city was 45.9% male and 54.1% female.
2000 census
As of the census of 2000, there were 1,220 people, 491 households, and 282 families living in the city. The population density was 328.3 people per square mile. There were 556 housing units at an average density of 149.6 per square mile. The racial makeup of the city was 98.36% White, 0.08% African American, 0.98% Native American, 0.08% Asian, 0.08% from other races, and 0.41% from two or more races. Hispanic or Latino of any race were 0.33% of the population. 42.4% were of Finnish, 23.2% German and 15.5% Norwegian ancestry. There were 491 households out of which 25.9% had children under the age of 18 living with them, 45.0% were married couples living together, 9.4% had a female householder with no husband present, and 42.4% were non-families. 37.7% of all households were made up of individuals and 20.6% had someone living alone who was 65 years of age or older. The average household size was 2.22 and the average family size was 2.98. In the city, the population was spread out with 23.8% under the age of 18, 5.6% from 18 to 24, 20.2% from 25 to 44, 17.4% from 45 to 64, and 33.1% who were 65 years of age or older. The median age was 46 years. For every 100 females, there were 81.8 males. For every 100 females age 18 and over, there were 78.5 males. The median income for a household in the city was $22,232, and the median income for a family was $30,288. Males had a median income of $26,071 versus $18,594 for females. The per capita income for the city was $14,360. About 14.7% of families and 18.7% of the population were below the poverty line, including 22.6% of those under age 18 and 12.3% of those age 65 or over.
Notable residents
The writer-illustrator Wallace Wood, best known as one of the original five Mad cartoonists, was born in Menahga on June 17, 1927. Wood's childhood in Menahga was documented by Bhob Stewart in the illustrated biography, Against the Grain: Mad Artist Wallace Wood. College basketball head coachDon Monson was born in Menahga in 1933; he moved to Idaho as
