Predominantly white, with a growing Latino and Asian presence
Approximately 88,000 residents in the township, with a demographic profile typical of Midwest suburbs: non-Hispanic white majority, an established Latino community, and an expanding Asian population.
The township's population hovers around 88,000, distributed across the villages of Algonquin, Lake in the Hills, portions of Cary, and unincorporated areas. The majority is non-Hispanic white, with strong German, Irish, Polish, and Italian ancestry, a legacy of the 20th-century migration waves that passed through Chicago.
The Hispanic community, predominantly of Mexican origin, is the second largest and has grown substantially over the past two decades, with a visible presence in businesses along Randall Road and Route 31. The Asian population, including Indian, Filipino, and Chinese residents, has also increased, driven by openings in technology and healthcare at regional business parks.
The township is aging slowly: the median age is around 40, but schools remain full and there is a steady flow of young families moving in. English dominates, with Spanish as the second most commonly heard language in retail and public schools, which offer ESL programs.
- English
- Spanish
- Polish
- Hindi
- Tagalog
- Catholicism
- Evangelical Protestantism
- Lutheranism
- Hinduism
- Reform Judaism