| Official Name: | Beaver Dam, Wisconsin |
| Settlement Type: | Town |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Dodge |
| Unit Pref: | Imperial |
| Area Total Km2: | 95.9 |
| Area Land Km2: | 88.7 |
| Area Water Km2: | 7.2 |
| Area Total Sq Mi: | 37 |
| Area Land Sq Mi: | 34.3 |
| Area Water Sq Mi: | 2.8 |
| Population As Of: | 2000 |
| Population Total: | 3440 |
| Population Density Km2: | 38.8 |
| Population Density Sq Mi: | 100.4 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Footnotes: | [1] |
| Elevation M: | 265 |
| Elevation Ft: | 869 |
| Coordinates: | 43.4431°N -88.8253°W |
| Blank Name: | FIPS code |
| Blank Info: | 55-05925[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1582778 |
Beaver Dam is a town in Dodge County, Wisconsin, United States. The population was 4,062 at the 2020 census. The City of Beaver Dam is encircled by the town. The unincorporated communities of Beaver Edge, Leipsig and Sunset Beach are located in the town. The ghost town of Clason Prairie was also located in the town.
According to the United States Census Bureau, the town has a total area of, of which, is land and (7.46%) is water. The community is at the southeast end of Beaver Dam Lake.
US Route 151 passes through Beaver Dam.
At the 2020 census, there were 4,062 people, 1,757 households, and 1,643 families residing in the town. The population density was . There were 1,375 housing units at an average density of . The racial make-up of the town was 88.18% White, 0.51% Black or African American, 0.17% Native American, 0.96% Asian, 1.95% from other races and 7.4% from two or more races. 8.83% of the population were Hispanic or Latino of any race.
There were 1,757 households, of which 16.8% had children under the age of 18 living with them, 52.7% were married couples living together, 17.7% had a female householder with no husband present, and 24.8% were non-families. 20.1% of all households were made up of individuals and 7.8% 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 3.07.
27.1% of the population were under the age of 18, 5.6% from 18 to 24, 28.1% from 25 to 44, 27.8% from 45 to 64 and 11.5% were 65 years of age or older. The median age was 39 years. For every 100 females, there were 102.4 males. For every 100 females age 18 and over, there were 100.8 males.
The median household income was $82,925, and the median family income was $81,627. Males had a median income of $39,527 and females $22,462. The per capita income was $21,541. About 4.5% of families and 5.2% of the population were below the poverty line, including 9.9% of those under age 18 and 7.3% of those age 65 or over.