2020 census As of the
2020 census, Fowler had a population of 6,700 and a population density of . The median age was 34.6 years, with 27.6% of residents under age 18, 9.6% aged 18 to 24, 26.9% aged 25 to 44, 23.5% aged 45 to 64, and 12.4% aged 65 or older. For every 100 females, there were 96.9 males, and for every 100 females age 18 and over, there were 94.4 males age 18 and over. The census reported that 99.3% of the population lived in households and 0.7% were institutionalized. There were 2,049 households, of which 46.8% had children under age 18, 54.7% were married-couple households, 6.4% were
cohabiting couple households, 23.4% had a female householder with no spouse or partner present, and 15.4% had a male householder with no spouse or partner present. About 16.3% of households were one person households, and 6.7% had someone living alone who was 65 years of age or older. The average household size was 3.25, and there were 1,620
families (79.1% of all households). There were 2,133 housing units at an average density of , of which 2,049 (96.1%) were occupied. Of occupied units, 61.3% were owner-occupied and 38.7% were occupied by renters. Overall, 3.9% of housing units were vacant; the homeowner vacancy rate was 0.5% and the rental vacancy rate was 2.9%.
Demographic estimates In 2023, the US Census Bureau estimated that 19.2% of the population were foreign-born. Of all people aged 5 or older, 51.2% spoke only English at home, 40.9% spoke
Spanish, 7.7% spoke other
Indo-European languages, and 0.2% spoke Asian or Pacific Islander languages. Of those aged 25 or older, 76.1% were high school graduates and 23.5% had a bachelor's degree.
Income and poverty The median household income in 2023 was $61,071, and the
per capita income was $29,141. About 22.0% of families and 23.4% of the population were below the poverty line.
Historical demographics In 1920,
Armenians comprised 65% of the population of Fowler, with 1,000 Armenian residents out of a total population of 1,528. ==Notable natives and residents==