2020 census
As of the 2020 census, Lake Mary had a population of 16,798. The median age was 44.5 years. 19.3% of residents were under the age of 18 and 19.6% of residents were 65 years of age or older. For every 100 females there were 92.7 males, and for every 100 females age 18 and over there were 90.7 males age 18 and over.[11][12]
100.0% of residents lived in urban areas, while 0.0% lived in rural areas.[13]
There were 6,694 households in Lake Mary, of which 29.0% had children under the age of 18 living in them. Of all households, 55.5% were married-couple households, 15.4% were households with a male householder and no spouse or partner present, and 23.9% were households with a female householder and no spouse or partner present. About 25.6% of all households were made up of individuals and 9.9% had someone living alone who was 65 years of age or older.[11][12]
There were 7,132 housing units, of which 6.1% were vacant. The homeowner vacancy rate was 2.3% and the rental vacancy rate was 6.4%.[11][12]
According to 2020 ACS 5-year estimates, there were 4,859 families residing in the city.[14]
2000 census
As of the 2000 census,[3] there were 11,458 people, 4,199 households, and 3,271 families residing in the city. The population density was 1,330.8 inhabitants per square mile (513.8/km2). There were 4,351 housing units at an average density of 505.4 per square mile (195.1/km2). The racial makeup of the city was 89.33% White, 3.60% African American, 0.24% Native American, 3.83% Asian, 0.09% Pacific Islander, 1.47% from other races, and 1.42% from two or more races. Hispanic or Latino of any race were 6.22% of the population.[16]
In 2000, there were 4,199 households, out of which 38.4% had children under the age of 18 living with them, 70.8% were married couples living together, 6.5% had a female householder with no husband present, and 22.1% were non-families. 16.9% of all households were made up of individuals, and 5.8% had someone living alone who was 65 years of age or older. The average household size was 2.72 and the average family size was 3.08.[16]
In 2000, in the city, the population was spread out, with 26.7% under the age of 18, 5.4% from 18 to 24, 31.9% from 25 to 44, 25.9% from 45 to 64, and 10.2% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 96.9 males. For every 100 females age 18 and over, there were 94.8 males.
In 2000, the median income for a household in the city was $83,921, and the median income for a family was $96,983.[16] Males had a median income of $57,132 versus $32,439 for females. The per capita income for the city was $31,094. 2.9% of the population and 2.5% of families were below the poverty line. 1.8% of those under the age of 18 and 3.6% of those 65 and older were living below the poverty line.
