Browse / United States / Illinois / Crystal Lake
Crystal Lake
Illinoiscity
Crystal Lake
Total population
40,579
Median home value
$311,400
Bachelor's+
Median income
$108,418
Founded
1914
Air quality index
Demographic figures from US Census Bureau · ACS 5-year estimates. Overview below cites Wikipedia and may reference a different year.
City facts
Sister cities
Facts from Wikidata (CC0).
Overview
Crystal Lake is a city in McHenry County, Illinois, United States. Named after a lake 1.6 miles (2.6 km) southwest of the city's downtown, Crystal Lake is 45 miles (72 km) northwest of Chicago. The population was 40,269 as of the 2020 census. Crystal Lake is the most populous city in McHenry County, part of the Chicago metropolitan area.
Read more on WikipediaHistory & geography
History
The City of Crystal Lake traces its origins to two communities established in the 1800s. Those communities were generally known as Nunda and Crystal Lake. In 1835, Ziba S. Beardsley came to the shores of the lake and commented that the "waters were as clear as crystal", thereby giving the lake its name. Ziba Beardsley continued south to Naperville. In February 1836, the first white settlers, Beman and Polly Crandall, and six of their ten children arrived from New York State, traveling to Crystal Lake in a covered wagon. Their original cabin was built near today's intersection of Virginia Street and Van Buren Street. Four of the Crandall children were born there. Najah Beardsley's family was the second to settle in the area; his grandson, William Beardsley, was the first white child born on the Crystal Lake prairie, on May 7, 1837. The town was first known as Crystal Ville. It was changed to Crystal Lake sometime before 1840. The area known today as downtown Crystal Lake was first called Dearborn and later, Nunda, from a location in New York where many settlers originated. The village of Dearborn was founded in the 1850s after railroads were extended through the area. The first train station was built in 1856, although it was pre-fabricated and shipped from Chicago on a flatcar. At that time, the central business district for the village of Crystal Lake was located on Virginia Street, about one mile (1.6 km) southwest of the railroad station. The railroad connected the people and industries of Crystal Lake and Dearborn to Chicago and the rest of the country. On October 7, 1868, Dearborn's name was changed to Nunda. The village was platted in 1868 by local surveyor John Brink, after whom a downtown street is now named. The village included the area now generally…
Geography
According to the 2010 census, Crystal Lake has a total area of , of which (or 96.8%) is land and (or 3.2%) is water. In 2023, census data reported that Crystal Lake has a total area of 18.985 square miles (49.10 km2), of which 18.35 square miles (47.53 km2) (or 96.8%) is land and 0.613 square miles (1.59 km2) (or 3.2%) is water. As the largest city in McHenry County, Crystal Lake has three high schools and many distinct neighborhoods. Starting from the north of the city, the ten largest neighborhoods are easy to trace out. The first has no de facto name like the others, but is referred to as "by Prairie Ridge," referring to the nearby high school of the same name. Houses in this neighborhood are large and widely spaced. The entire area lies just to the north of the city, from the downtown area to the adjacent community of Bull Valley. Some of the communities include Deer Wood, Covered Bridge Trails, and Walk-up Woods. Next is downtown Crystal Lake, which surrounds Crystal Lake Central High School. Houses here range significantly in size and age, and it is the most diverse neighborhood in the city. Directly south of downtown Crystal Lake is the Coventry neighborhood, named for the major through street, Coventry Lane. Students in the Coventry neighborhood attend either Central High School of Crystal Lake or Crystal Lake South High School. Oral tradition holds that Coventry was initially populated by pilots who flew out of O'Hare Airport. The neighborhood, Burtons Bridge, is located at the north-eastern side of Crystal Lake, adjacent to the Fox River. To the southwest of downtown Crystal Lake is the sprawling Four Colonies neighborhood, which covers nearly . Students from Four Colonies attend both Central and South High School. South of Four Colonies…
Excerpted from the corresponding Wikipedia article (CC BY-SA).
Demographics & economy
Race & ethnicity
Source: US Census Bureau — American Community Survey, 5-year estimates.
Geography
Coordinates & boundaries from the US Census TIGER/Line shapefiles.
Climate
Current forecast
Forecast for Crystal Lake, IL from NOAA NWS API.
Air quality
Current readings from Open-Meteo Air Quality API (Copernicus CAMS European reanalysis).
Industrial & pollution facilities
Natural hazard risk
Health (adults)
Age-adjusted prevalence estimates from CDC PLACES (latest release).
Walkability
Amenities nearby
Wildlife & biodiversity
Most-observed species
- American RobinTurdus migratorius Linnaeus, 1766 · Aves21,653
- Northern CardinalCardinalis cardinalis (Linnaeus, 1758) · Aves20,856
- Canada Goose (canadensis Group)Branta canadensis (Linnaeus, 1758) · Aves20,372
- Red-winged BlackbirdAgelaius phoeniceus (Linnaeus, 1766) · Aves20,042
- Black-capped ChickadeePoecile atricapillus (Linnaeus, 1766) · Aves18,758
- MallardAnas platyrhynchos Linnaeus, 1758 · Aves18,190
- American GoldfinchSpinus tristis (Linnaeus, 1758) · Aves16,928
- Red-bellied WoodpeckerMelanerpes carolinus (Linnaeus, 1758) · Aves16,633
Citizen-science & research observations from the Global Biodiversity Information Facility (GBIF).
Schools
Largest nearby schools
- Huntley High SchoolHigh · Huntley · 2,926 students · 16.3:1 ratio
- McHenry Community High SchoolHigh · Mchenry · 2,222 students · 15.8:1 ratio
- Harry D Jacobs High SchoolHigh · Algonquin · 2,080 students · 15.1:1 ratio
- Cary-Grove Community High SchoolHigh · Cary · 1,494 students · 18:1 ratio
- Crystal Lake Central High SchoolHigh · Crystal Lake · 1,470 students · 16.9:1 ratio
- Crystal Lake South High SchoolHigh · Crystal Lake · 1,301 students · 17.8:1 ratio
- Marlowe Middle SchoolMiddle · Lake in the Hills · 1,191 students · 13.4:1 ratio
- Prairie Ridge High SchoolHigh · Crystal Lake · 1,140 students · 16.1:1 ratio
Public K–12 schools within ~10 mi from Urban Institute Education Data Portal (NCES Common Core of Data, 2022).
Earthquake history
Most recent
- M 2.9 — 2026-07-0821 km ENE of Kenilworth, Illinois
- M 3.1 — 2024-07-152 km WNW of Somonauk, Illinois
- M 2.9 — 2015-03-253 km WNW of Lake in the Hills, Illinois
- M 3.2 — 2013-11-041 km SSW of Lyons, Illinois
- M 2.6 — 2013-06-104 km NNE of Virgil, Illinois
- M 3.8 — 2010-02-102 km NW of Lily Lake, Illinois
Events from the USGS Earthquake Catalog (global) (FDSN Event Web Service).
Photos
Sights & places nearby
Notable people from here





People born within ~10 km, from Wikidata (CC0). Click any name for their Wikipedia article.
Nearby places in Illinois
Geography & sun
Elevation, sunrise/sunset and daylight from Open-Meteo. Solar climatology from NASA POWER.
Nearby airports
Public attention
Pageview totals from the Wikimedia Pageviews API.
Books about Crystal Lake




Search results from Open Library.
Recent natural events nearby
Ground air-quality sensors
Recently spotted species
Nearest stream gauge
Events
Gallery
Sources
- • Wikipedia
- • US Census Bureau (ACS 5-year estimates)
- • NOAA National Weather Service
- • Wikidata
- • Open-Meteo Air Quality (CAMS)
- • USGS Earthquake Catalog (global feed)
- • NCES via Urban Institute Education Data Portal
- • GBIF (Global Biodiversity Information Facility)
- • CDC PLACES
- • Open-Meteo / sunrise-sunset.org
- • Wikipedia Pageviews API
- • Open Library