Crystal Lake Population 2026
Crystal Lake has a population of 40,448, making it the #1102 biggest city in 🇺🇸 United States, located in Illinois. It is about 218× smaller than New York City, the country's biggest city.
Population (city proper)
40,448
Rank in United States
#1102
Coordinates
42.24°N, 88.32°W
~279 m elevation · America/Chicago
Distance to capital (Washington)
1,022 km
635 miles, straight line
Other big cities in Illinois
| City | Population | Rank in United States |
|---|---|---|
| Chicago | 2,664,452 | #3 |
| Aurora | 200,661 | #125 |
| Rockford | 148,278 | #184 |
| Joliet | 147,861 | #186 |
| Naperville | 147,100 | #190 |
| Peoria | 115,070 | #259 |
| Springfield | 114,394 | #262 |
| North Peoria | 113,004 | #266 |
Cities near Crystal Lake
- Lake in the Hills29,024 people · ~7 km away
- Algonquin30,571 people · ~9 km away
- McHenry26,657 people · ~11 km away
- Huntley26,005 people · ~12 km away
- Carpentersville38,512 people · ~14 km away
- Elgin112,111 people · ~23 km away
FAQ
What is the population of Crystal Lake?
Crystal Lake has a population of 40,448 (city proper, latest official figure via GeoNames), making it the #1102 biggest city in United States.
What state is Crystal Lake in?
Crystal Lake is located in Illinois, United States.
Is Crystal Lake the capital of United States?
No, the capital of United States is Washington D.C., about 1,022 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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