
Boulder Hill
- County:
- Kane County
- County Seat:
- No
- Area (mi²):
- 1.458
- State:
- Illinois
Boulder Hill is a CDP located in Kane County, Illinois. Boulder Hill has a 2025 population of 9,907. Boulder Hill is currently growing at a rate of 1.23% annually and its population has increased by 9.1% since the most recent census, which recorded a population of 9,081 in 2020.
The average household income in Boulder Hill is $94,020 with a poverty rate of 6.96%. The median age in Boulder Hill is 36.8 years: 36.1 years for males, and 37.6 years for females.