2020 census As of the
2020 census, Birch Bay had a population of 10,115. The median age was 49.7 years. 18.4% of residents were under the age of 18 and 25.8% of residents were 65 years of age or older. For every 100 females there were 98.0 males, and for every 100 females age 18 and over there were 96.2 males age 18 and over. 92.1% of residents lived in urban areas, while 7.9% lived in rural areas. There were 4,350 households in Birch Bay, of which 22.1% had children under the age of 18 living in them. Of all households, 52.8% were married-couple households, 16.9% were households with a male householder and no spouse or partner present, and 23.7% were households with a female householder and no spouse or partner present. About 27.4% of all households were made up of individuals and 14.4% had someone living alone who was 65 years of age or older. There were 5,904 housing units, of which 26.3% were vacant. The homeowner vacancy rate was 1.6% and the rental vacancy rate was 6.6%.
2000 census As of the census of 2000, there were 4,961 people, 2,125 households, and 1,417 families residing in the CDP. The population density was . There were 5,105 housing units at an average density of . The racial makeup of the CDP was 92.36%
White, 1.23%
Asian, 1.19%
Native American, 1.05%
African American, 0.14%
Pacific Islander, 1.91% from
other races, and 2.12% from two or more races.
Hispanic or
Latino of any race were 4.45% of the population. There were 2,125 households, out of which 27.0% had children under the age of 18 living with them, 53.5% were married couples living together, 9.3% had a female householder with no husband present, and 33.3% were non-families. 26.4% of all households were made up of individuals, and 8.2% had someone living alone who was 65 years of age or older. The average household size was 2.33 and the average family size was 2.80. In the CDP, the age distribution of the population shows 23.2% under the age of 18, 6.2% from 18 to 24, 27.0% from 25 to 44, 27.7% from 45 to 64, and 15.9% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 97.4 males. For every 100 females age 18 and over, there were 92.9 males. The median income for a household in the CDP was $40,040, and the median income for a family was $44,280. Males had a median income of $41,198 versus $27,076 for females. The
per capita income for the CDP was $21,204. About 6.7% of families and 9.4% of the population were below the
poverty line, including 13.7% of those under age 18 and 0.9% of those age 65 or over. ==Education==