Oakville is located at . According to the United States Census Bureau, the city has a total area of, of which is land and is water.
Demographics
2010 census
At the 2010 census there were 173 people in 62 households, including 42 families, in the city. The population density was. There were 95 housing units at an average density of. The racial makup of the city was 97.7% White, 0.6% from other races, and 1.7% from two or more races. Hispanic or Latino of any race were 2.9%. Of the 62 households 41.9% had children under the age of 18 living with them, 40.3% were married couplesliving together, 14.5% had a female householder with no husband present, 12.9% had a male householder with no wife present, and 32.3% were non-families. 29.0% of households were one person and 12.9% were one person aged 65 or older. The average household size was 2.79 and the average family size was 3.36. The median age was 28.3 years. 37% of residents were under the age of 18; 8.6% were between the ages of 18 and 24; 24.9% were from 25 to 44; 20.3% were from 45 to 64; and 9.2% were 65 or older. The gender makeup of the city was 51.4% male and 48.6% female.
At the 2000 census there were 439 people in 179 households, including 119 families, in the city. The population density was 1,044.8 people per square mile. There were 193 housing units at an average density of 459.3 per square mile. The racial makup of the city was 99.32% White, 0.46% Asian, and 0.23% from two or more races. Hispanic or Latino of any race were 0.91%. Of the 179 households 33.0% had children under the age of 18 living with them, 49.2% were married couples living together, 12.3% had a female householder with no husband present, and 33.5% were non-families. 28.5% of households were one person and 12.3% were one person aged 65 or older. The average household size was 2.45 and the average family size was 2.97. The age distribution was 26.9% under the age of 18, 8.0% from 18 to 24, 28.0% from 25 to 44, 22.6% from 45 to 64, and 14.6% 65 or older. The median age was 34 years. For every 100 females, there were 99.5 males. For every 100 females age 18 and over, there were 89.9 males. The median household income was $29,018 and the median family income was $32,250. Males had a median income of $31,346 versus $21,389 for females. The per capita income for the city was $13,276. About 3.0% of families and 7.7% of the population were below the poverty line, including 8.8% of those under age 18 and 6.1% of those age 65 or over.
June 2008 flooding
Due to the catastrophic statewide of June 2008, the recovery of the city is under question.
