| Official Name: | Sister Bay, Wisconsin |
| Settlement Type: | Village |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Door |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 9.25 |
| Area Land Km2: | 6.68 |
| Area Water Km2: | 2.57 |
| Area Total Sq Mi: | 3.57 |
| Area Land Sq Mi: | 2.58 |
| Area Water Sq Mi: | 0.99 |
| Population As Of: | 2010 |
| Population Est: | 935 |
| Pop Est As Of: | 2019 |
| Population Total: | 876 |
| Population Density Km2: | 139.97 |
| Population Density Sq Mi: | 362.54 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Footnotes: | [2] |
| Elevation M: | 189 |
| Elevation Ft: | 620 |
| Coordinates: | 45.1872°N -87.1239°W |
| Blank Name: | FIPS code |
| Blank Info: | 55-74225[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1574209 |
| Website: | http://www.sisterbay.com/ |
Sister Bay is a village in Door County, Wisconsin, United States.[4] The population was 876 at the 2010 census.
According to the United States Census Bureau, the village has a total area of 3.58sqmi, of which 2.58sqmi is land and 1sqmi is water.[5]
At the 2000 census, there were 886 people, 446 households and 224 families living in the village. The population density was 341.9 per square mile (132.1/km2). There were 945 housing units at an average density of 364.7 per square mile (140.9/km2). The racial makeup of the village was 98.42% White, 0.11% African American, 0.79% Native American, 0.23% Asian, 0.11% from other races, and 0.34% from two or more races. Hispanic or Latino of any race were 0.68% of the population.
There were 446 households, of which 11.4% had children under the age of 18 living with them, 46.0% were married couples living together, 3.6% had a female householder with no husband present, and 49.6% were non-families. 46.4% of all households were made up of individuals, and 28.7% had someone living alone who was 65 years of age or older. The average household size was 1.78 and the average family size was 2.45.
10.9% of the population were under the age of 18, 3.7% from 18 to 24, 13.4% from 25 to 44, 25.7% from 45 to 64, and 46.2% who were 65 years of age or older. The median age was 61 years. For every 100 females, there were 73.7 males. For every 100 females age 18 and over, there were 69.0 males.
The median household income was $33,224 and the median family income was $50,893. Males had a median income of $28,571 compared with $23,250 for females. The per capita income for the village was $25,029. About 1.4% of families and 3.5% of the population were below the poverty line, including none of those under age 18 and 3.6% of those age 65 or over.
At the 2010 census,[6] there were 876 people, 457 households and 217 families living in the village. The population density was 339.5PD/sqmi. There were 1,335 housing units at an average density of 517.4/sqmi. The racial makeup of the village was 97.5% White, 0.7% African American, 0.1% Native American, 0.2% Asian, 1.0% from other races, and 0.5% from two or more races. Hispanic or Latino residents of any race were 3.1% of the population.
There were 457 households, of which 11.2% had children under the age of 18 living with them, 40.3% were married couples living together, 5.0% had a female householder with no husband present, 2.2% had a male householder with no wife present, and 52.5% were non-families. 47.3% of all households were made up of individuals, and 29.7% had someone living alone who was 65 years of age or older. The average household size was 1.75 and the average family size was 2.43.
The median age in the village was 62.7 years. 10.3% of residents were under the age of 18; 3.2% were between the ages of 18 and 24; 15% were from 25 to 44; 25.3% were from 45 to 64; and 46.2% were 65 years of age or older. The gender makeup of the village was 42.9% male and 57.1% female.
Gibraltar Area Schools serves the community. Gibraltar Elementary School[7] and Gibraltar Secondary School[8] are the two schools.