2020
The 2020 United States census reported that Interlaken had a population of 7,368. The population density was 751.5 inhabitants per square mile (290.2/km2). The racial makeup of Interlaken was 26.3% White, 0.6% African American, 2.1% Native American, 3.2% Asian, 0.1% Pacific Islander, 50.4% from other races, and 17.2% from two or more races. Hispanic or Latino of any race were 75.2% of the population. [8]
The census reported that 99.1% of the population lived in households, 63 people (0.9%) lived in non-institutionalized group quarters, and no one was institutionalized. [8]
There were 1,841 households, out of which 48.3% included children under the age of 18, 58.9% were married-couple households, 7.1% were cohabiting couple households, 21.0% had a female householder with no partner present, and 13.0% had a male householder with no partner present. 11.4% of households were one person, and 6.0% were one person aged 65 or older. The average household size was 3.97. [8] There were 1,527 families (82.9% of all households). [9]
The age distribution was 25.7% under the age of 18, 9.9% aged 18 to 24, 27.0% aged 25 to 44, 23.6% aged 45 to 64, and 13.8% who were 65 years of age or older. The median age was 35.1 years. For every 100 females, there were 101.3 males. [8]
There were 1,876 housing units at an average density of 191.4 units per square mile (73.9 units/km2), of which 1,841 (98.1%) were occupied. Of these, 66.1% were owner-occupied, and 33.9% were occupied by renters. [8]
In 2023, the US Census Bureau estimated that 31.2% of the population were foreign-born. Of all people aged 5 or older, 36.3% spoke only English at home, 62.1% spoke Spanish, 1.6% spoke other Indo-European languages, 0.0% spoke Asian or Pacific Islander languages, and 0.0% spoke other languages. Of those aged 25 or older, 73.3% were high school graduates and 18.0% had a bachelor's degree. [10]
The median household income in 2023 was $111,021, and the per capita income was $36,003. About 3.9% of families and 8.2% of the population were below the poverty line. [11]
2010
At the 2010 census Interlaken had a population of 7,321. The population density was 717.6 inhabitants per square mile (277.1/km2). The racial makeup of Interlaken was 3,856 (52.7%) White, 58 (0.8%) African American, 128 (1.7%) Native American, 302 (4.1%) Asian, 2 (0.0%) Pacific Islander, 2,573 (35.1%) from other races, and 402 (5.5%) from two or more races. Hispanic or Latino of any race were 5,261 persons (71.9%). [12]
The census reported that 98.5% of the population lived in households and 1.5% lived in non-institutionalized group quarters.
There were 1,690 households, 885 (52.4%) had children under the age of 18 living in them, 1,075 (63.6%) were opposite-sex married couples living together, 227 (13.4%) had a female householder with no husband present, 123 (7.3%) had a male householder with no wife present. There were 92 (5.4%) unmarried opposite-sex partnerships, and 11 (0.7%) same-sex married couples or partnerships. 179 households (10.6%) were one person and 88 (5.2%) had someone living alone who was 65 or older. The average household size was 4.27. There were 1,425 families (84.3% of households); the average family size was 4.43.
The age distribution was 2,138 people (29.2%) under the age of 18, 853 people (11.7%) aged 18 to 24, 2,039 people (27.9%) aged 25 to 44, 1,658 people (22.6%) aged 45 to 64, and 633 people (8.6%) who were 65 or older. The median age was 30.5 years. For every 100 females, there were 109.6 males. For every 100 females age 18 and over, there were 106.7 males.
There were 1,759 housing units at an average density of 172.4 per square mile (66.6/km2), of which 71.4% were owner-occupied and 28.6% were occupied by renters. The homeowner vacancy rate was 0.7%; the rental vacancy rate was 1.8%. 68.6% of the population lived in owner-occupied housing units and 29.8% lived in rental housing units.
