See U.S. Congress, House, Special Committee on Victor L. Berger Investigation, Case of Victor L. Berger of Wisconsin: Hearings (1919 and 1921, repr. 1972); study by S. M. Miller (1973).
Berger is home to Bias Vineyards-Gruhlke's Microbrewery, and Bias Vineyards. It is within the Hermann American Viticultural Area, recognized in 1983 as a distinct wine region by the federal government. The seven wineries in the AVA produce one-third of the annual state total of wine.
The town name is pronounced with a soft 'g' because of its French roots.
According to the United States Census Bureau, the city has a total area of 0.3 square miles (0.8 km²), all of it land.
The rural town is located on the Berger Bottom, a floodplain south of the Missouri River.
There were 85 households out of which 25.9% had children under the age of 18 living with them, 55.3% were married couples living together, 9.4% had a female householder with no husband present, and 34.1% were non-families. 31.8% of all households were made up of individuals and 18.8% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 3.09.
In the city the population was spread out with 25.7% under the age of 18, 7.3% from 18 to 24, 24.8% from 25 to 44, 23.3% from 45 to 64, and 18.9% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 96.2 males. For every 100 females age 18 and over, there were 91.3 males.
The median income for a household in the city was $32,083, and the median income for a family was $42,188. Males had a median income of $31,406 versus $21,667 for females. The per capita income for the city was $18,460. About 3.5% of families and 5.8% of the population were below the poverty line, including none of those under the age of eighteen and 17.4% of those sixty five or over.