| Official Name: | Buena Vista, Wisconsin |
| Settlement Type: | Town |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Portage |
| Unit Pref: | Imperial |
| Area Total Km2: | 158.9 |
| Area Land Km2: | 158.8 |
| Area Water Km2: | 0.1 |
| Area Total Sq Mi: | 61.4 |
| Area Land Sq Mi: | 61.3 |
| Area Water Sq Mi: | 0.0 |
| Population As Of: | 2010 |
| Population Total: | 1198 |
| Population Density Km2: | 7.5 |
| Population Density Sq Mi: | 19.4 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Footnotes: | [1] |
| Elevation M: | 342 |
| Elevation Ft: | 1122 |
| Coordinates: | 44.3731°N -89.4428°W |
| Blank Name: | FIPS code |
| Blank Info: | 55-10925[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1582882 |
Buena Vista is a town in Portage County, Wisconsin, United States. The population was 1,198 at the 2010 census. The unincorporated communities of Coddington and Keene are located within the town.
The town's name commemorates the Battle of Buena Vista in the Mexican–American War.[3]
According to the United States Census Bureau, the town has a total area of 61.4 square miles (158.9 km2), of which, 61.3 square miles (158.8 km2) of it is land and 0.04 square miles (0.1 km2) of it (0.07%) is water.
As of the census of 2000, there were 1,187 people, 418 households, and 318 families residing in the town. The population density was 19.4 people per square mile (7.5/km2). There were 446 housing units at an average density of 7.3 per square mile (2.8/km2). The racial makeup of the town was 98.48% White, 0.08% African American, 0.34% Native American, 0.25% Asian, 0.34% from other races, and 0.51% from two or more races. Hispanic or Latino of any race were 1.26% of the population.
There were 418 households, out of which 38.5% had children under the age of 18 living with them, 66.0% were married couples living together, 5.5% had a female householder with no husband present, and 23.7% were non-families. 17.0% of all households were made up of individuals, and 4.5% had someone living alone who was 65 years of age or older. The average household size was 2.84 and the average family size was 3.22.
In the town, the population was spread out, with 28.3% under the age of 18, 8.0% from 18 to 24, 30.4% from 25 to 44, 24.3% from 45 to 64, and 8.9% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 109.0 males. For every 100 females age 18 and over, there were 107.6 males.
The median income for a household in the town was $46,920, and the median income for a family was $49,519. Males had a median income of $31,908 versus $22,614 for females. The per capita income for the town was $18,775. About 4.7% of families and 5.9% of the population were below the poverty line, including 6.3% of those under age 18 and 17.3% of those age 65 or over.