Who lives in Arlington Heights?
The age breakdown of Arlington Heights, IL, how many residents were born in the state or outside the U.S., the languages spoken at home, and how all of it compares with the county, the state and the nation.
U.S. Census Bureau, American Community Survey 5-year estimates, tables B01001, B01002, B05002 and C16001.
This story was assembled using AI and public data sources.
The people of Arlington Heights, by the numbers.
Median age: 42.7 yrs — U.S.: 38.7 yrs
Share of residents by age
- Under 18: 23.4
- 18–24: 4.9
- 25–34: 11
- 35–44: 13.9
- 45–54: 14.3
- 55–64: 13.3
- 65–74: 10.4
- 75+: 8.9
Born in this state: 64% — Born outside the U.S.: 21.0%
Languages spoken at home (share of residents 5+)
- Other Indo-European: 6.2
- Spanish: 5.8
- Korean: 2.5
- Chinese: 1.1
- Tagalog: 0.9
- German / West Germanic: 0.5
Median age (years)
- Arlington Heights: 42.7
- Cook County: 37.8
- IL: 38.9
- U.S.: 38.7
What it means
Half of residents here are older than 42.7 — 4.0 years above the national median.
About 23% of residents are under 18 and 19% are 65 or older.
64% of people living here were born in IL, and 21.0% were born outside the United States (U.S.: 13.9%).
71% of residents 5 and older speak only English at home.
All shares are drawn from a population of about 76,220.
Sources
- U.S. Census Bureau — American Community Survey (ACS) 5-year estimates — Population, income, housing, education, commuting and poverty figures
- Census Bureau API — ACS Detailed Tables — The endpoint these pages are generated from
- data.census.gov — Look up the same tables for any place yourself
- ACS accuracy statement — Estimates carry margins of error; small places vary the most
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