2020 census

The 2020 United States census counted 96 people, 54 households, and 33 families in Munden.^[7][8] The population density was 516.1 per square mile (199.3/km²). There were 65 housing units at an average density of 349.5 per square mile (134.9/km²).^[8][9] The racial makeup was 100.0% (96) white or European American (100.0% non-Hispanic white), 0.0% (0) black or African-American, 0.0% (0) Native American or Alaska Native, 0.0% (0) Asian, 0.0% (0) Pacific Islander or Native Hawaiian, 0.0% (0) from other races, and 0.0% (0) from two or more races.^[10] Hispanic or Latino of any race was 0.0% (0) of the population.^[11]

Of the 54 households, 29.6% had children under the age of 18; 38.9% were married couples living together; 14.8% had a female householder with no spouse or partner present. 35.2% of households consisted of individuals and 16.7% had someone living alone who was 65 years of age or older.^[8] The average household size was 2.0 and the average family size was 2.8.^[12] The percent of those with a bachelor’s degree or higher was estimated to be 25.0% of the population.^[13]

25.0% of the population was under the age of 18, 6.2% from 18 to 24, 10.4% from 25 to 44, 30.2% from 45 to 64, and 28.1% who were 65 years of age or older. The median age was 53.5 years. For every 100 females, there were 71.4 males.^[8] For every 100 females ages 18 and older, there were 53.2 males.^[8]

The 2016-2020 5-year American Community Survey estimates show that the median household income was $53,750 (with a margin of error of +/- $30,920) and the median family income was $66,750 (+/- $9,682).^[14] Females had a median income of $28,333 (+/- $15,120). The median income for those above 16 years old was $23,750 (+/- $16,649).^[15] Approximately, 0.0% of families and 14.3% of the population were below the poverty line, including 0.0% of those under the age of 18 and 28.0% of those ages 65 or over.^[16][17]

2010 census

At the 2010 census, there were 100 people in 49 households, including 30 families, in the city. The population density was 500.0 per square mile (193.1/km²). There were 67 housing units at an average density of 335.0 per square mile (129.3/km²). The racial mak-up of the city was 100.0% White.^[18] Of the 49 households, 24.5% had children under the age of 18 living with them, 49.0% were married couples living together, 8.2% had a female householder with no husband present, 4.1% had a male householder with no wife present and 38.8% were non-families. 34.7% of households were one person and 6.1% were one person aged 65 or older. The average household size was 2.04 and the average family size was 2.57.

The median age was 48.9 years. 20% of residents were under the age of 18, 5% were between the ages of 18 and 24, 15% were from 25 to 44, 48% were from 45 to 64 and 12% were 65 or older. The sex make-up of the city was 50.0% male and 50.0% female.

2000 census

At the 2000 census there were 122 people in 54 households, including 32 families, in the city. The population density was 607.6 per square mile (234.6/km²). There were 71 housing units at an average density of 353.6 per square mile (136.5/km²). The racial mak-up of the city was 98.36% White, 1.64% from other races. Hispanic or Latino of any race were 1.64%.^[19]

Of the 54 households, 24.1% had children under the age of 18 living with them, 55.6% were married couples living together and 40.7% were non-families. 38.9% of households were one person and 14.8% were one person aged 65 or older. The average household size was 2.26 and the average family size was 3.06.

The age distribution was 26.2% under the age of 18, 3.3% from 18 to 24, 30.3% from 25 to 44, 21.3% from 45 to 64 and 18.9% 65 or older. The median age was 39 years. For every 100 females, there were 106.8 males. For every 100 females age 18 and over, there were 114.3 males.

The median household income was $25,000 and the median family income was $30,750. Males had a median income of $20,000 and females $28,333. The per capita income was $12,649. 11.4% of families and 16.2% of the population were living below the poverty line, including 33.3% of under-eighteens and none of those over 64.