Marthasville is a city in Warren County, Missouri, United States. The population was 1,136 at the 2010 census. The Katy Trail, a 225-mile long bike path, passes through Marthasville. The original graves of Daniel Boone and his wife were located there. In 1845, Boone's remains were disinterred and moved to Kentucky for burial. Resentment in Missouri about the disinterment grew over the years, and a legend arose that Boone's remains never left Missouri. Because of the many wineries from here east to Defiance, Marthasville is considered to mark one end of the "Missouri Weinstrasse".
Marthasville is located at . According to the United States Census Bureau, the city has a total area of, of which is land and is water. Due to the rich soils and steep slopes, the landscape is highly suitable for viticulture, growing grapes and maintaining vineyards. Thus Marthasville became part of what is known as the Missouri "wine route".
As of the census of 2010, there were 1,136 people, 431 households, and 310 families living in the city. There were 478 housing units at an average density of. The racial makeup of the city was 97.5% White, 0.2% African American, 0.3% Native American, 0.1% Asian, 0.7% from other races, and 1.2% from two or more races. Hispanic or Latino of any race were 1.8% of the population. There were 431 households of which 42.7% had children under the age of 18 living with them, 54.8% were married couplesliving together, 9.7% had a female householder with no husband present, 7.4% had a male householder with no wife present, and 28.1% were non-families. 23.9% of all households were made up of individuals and 9.3% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.12. The median age in the city was 31.1 years. 29.2% of residents were under the age of 18; 8% were between the ages of 18 and 24; 33.4% were from 25 to 44; 19.3% were from 45 to 64; and 10.1% were 65 years of age or older. The gender makeup of the city was 52.0% male and 48.0% female.
2000 census
As of the census of 2000, there were 837 people, 321 households, and 230 families living in the city. There were 340 housing units at an average density of 406.0 per square mile. The racial makeup of the city was 96.77% White, 1.08% African American, 0.48% Native American, 0.36% Asian, 0.36% from other races, and 0.96% from two or more races. Hispanic or Latino of any race were 0.36% of the population. There were 321 households out of which 40.8% had children under the age of 18 living with them, 60.1% were married couples living together, 6.9% had a female householder with no husband present, and 28.3% were non-families. 22.4% of all households were made up of individuals and 8.4% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 3.09. In the city the population was spread out with 28.8% under the age of 18, 8.2% from 18 to 24, 36.3% from 25 to 44, 17.0% from 45 to 64, and 9.7% who were 65 years of age or older. The median age was 33 years. For every 100 females there were 105.7 males. For every 100 females age 18 and over, there were 100.7 males. The median income for a household in the city was $41,141, and the median income for a family was $45,521. Males had a median income of $32,083 versus $21,875 for females. The per capita income for the city was $17,979. About 5.9% of families and 8.5% of the population were below the poverty line, including 9.9% of those under age 18 and 9.5% of those age 65 or over.
