Tiffany is a town in Dunn County, Wisconsin, United States. The population was 633 at the 2000 census. The villages of Boyceville and Downing are located within the town.DemographicsAs of the census of 2000, there were 633 people, 230 households, and 177 families residing in the town. The population density was 21.1 people per square mile (8.2/km²). There were 239 housing units at an average density of 8.0 per square mile (3.1/km²). The racial makeup of the town was 99.53% White, and 0.47% from two or more races. Hispanic or Latino of any race were 1.26% of the population.There were 230 households out of which 38.3% had children under the age of 18 living with them, 67.0% were married couples living together, 5.7% had a female householder with no husband present, and 23.0% were non-families. 16.5% of all households were made up of individuals and 6.5% had someone living alone who was 65 years of age or older. The average household size was 2.75 and the average family size was 3.10.In the town, the population was spread out with 27.8% under the age of 18, 8.8% from 18 to 24, 26.5% from 25 to 44, 25.9% from 45 to 64, and 10.9% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 110.3 males. For every 100 females age 18 and over, there were 109.6 males.