Daviess County is a county located in the U.S. state of Missouri. As of the 2010 census, the population was 8,433. Its county seat is Gallatin. The county was organized December 29, 1836, from Ray County and named for Major Joseph Hamilton Daveiss, a soldier from Kentucky who was killed in 1811 at the Battle of Tippecanoe.
According to the U.S. Census Bureau, the county has a total area of 569 square miles (1,470 km), of which 563 square miles (1,460 km) is land and 5.8 square miles (15 km) (1.0%) is water.
As of the 2010 census, there were 8,433 people, 3,214 households, and 2,489 families residing in the county. The population density was 15 people per square mile (6/km²). There were 4,199 housing units at an average density of 7 per square mile (3/km²). The racial makeup of the county was 98.02% White, 0.27% Black or African American, 0.38% Native American, 0.06% Asian, 0.02% Pacific Islander, 0.08% from other races, and 1.16% from two or more races. Approximately 1.03% of the population were Hispanic or Latino of any race.
There were 3,214 households out of which 31.92% had children under the age of 18 living with them, 58.81% were married couples living together, 8.06% had a female householder with no husband present, and 28.34% were non-families. 24.64% of all households were made up of individuals and 10.89% had someone living alone who was 65 years of age or older. The average household size was 2.58 and the average family size was 3.06.
In the county, the population was spread out with 26.70% under the age of 18, 7.02% from 18 to 24, 21.81% from 25 to 44, 27.38% from 45 to 64, and 17.09% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 98.80 males. For every 100 females age 18 and over, there were 98.30 males.
The median income for a household in the county was $39,925, and the median income for a family was $48,839. Males had a median income of $33,882 versus $28,891 for females. The per capita income for the county was $19,900. About 9.80% of families and 13.80% of the population were below the poverty line, including 18.50% of those under age 18 and 11.60% of those age 65 or over.
According to the Association of Religion Data Archives County Membership Report (2010), Daviess County is sometimes regarded as being on the northern edge of the Bible Belt, with evangelical Protestantism being the most predominant religion. The most predominant denominations among residents in Daviess County who adhere to a religion are Southern Baptists (30.78%), Disciples of Christ (9.12%), and Amish groups (7.07%).