2020 census As of the
2020 census, Forest Grove had a population of 26,225 and 9,103 families residing in the city. The median age was 35.3 years, with 23.5% of residents under the age of 18 and 15.1% aged 65 or older. For every 100 females there were 93.6 males, and for every 100 females age 18 and over there were 90.8 males age 18 and over. As of the
2020 census, 99.7% of residents lived in urban areas, while 0.3% lived in rural areas. There were 9,010 households in Forest Grove, of which 34.8% had children under the age of 18 living in them. Of all households, 49.3% were married-couple households, 16.9% were households with a male householder and no spouse or partner present, and 25.8% were households with a female householder and no spouse or partner present. About 24.2% of all households were made up of individuals, and 12.3% had someone living alone who was 65 years of age or older. There were 7,385 households, of which 37.4% had children under the age of 18 living with them, 50.1% were
married couples living together, 11.0% had a female householder with no husband present, 4.9% had a male householder with no wife present, and 34.0% were non-families. 27.0% of all households were made up of individuals, and 12.7% had someone living alone who was 65 years of age or older. The average household size was 2.71 and the average family size was 3.31. The median age in the city was 32.7 years. 26.6% of residents were under the age of 18; 13.3% were between the ages of 18 and 24; 25.6% were from 25 to 44; 22.2% were from 45 to 64; and 12.3% were 65 years of age or older. The gender makeup of the city was 48.0% male and 52.0% female.
2000 census As of the census of 2000, there were 17,708 people, 6,336 households, and 4,131 families residing in the city. The population density was . There were 6,702 housing units at an average density of . The racial makeup of the city was 81.46% White, 0.43% African American, 0.89% Native American, 2.11% Asian, 0.24% Pacific Islander, 11.39% from other races, and 3.47% from two or more races. Hispanic or Latino of any race were 17.31% of the population. There are 6,336 households, out of which 35.9% had children under the age of 18 living with them, 50.3% were married couples living together, 10.2% had a female householder with no husband present, and 34.8% were non-families. 27.9% of all households were made up of individuals, and 14.3% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.24. In the city the population was spread out, with 27.4% under the age of 18, 13.4% from 18 to 24, 28.7% from 25 to 44, 16.8% from 45 to 64, and 13.6% who were 65 years of age or older. The median age was 31 years. For every 100 females, there were 90.2 males. For every 100 females age 18 and over, there were 86.6 males. The median income for a household in the city was $40,135, and the median income for a family was $47,733. Males had a median income of $36,139 versus $25,703 for females. The
per capita income for the city was $16,992. About 10.4% of families and 14.3% of the population were below the
poverty line, including 16.2% of those under age 18 and 11.4% of those age 65 or over. ==Arts and culture==