This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "McHenry County, Illinois" – news · newspapers · books · scholar · JSTOR (May 2008) (Learn how and when to remove this message)

McHenry County
County
Old McHenry County Courthouse in Woodstock, Illinois
Flag Seal
Location within the U.S. state of Illinois
Illinois's location within the U.S.
Coordinates: 42°19′N 88°27′W / 42.32°N 88.45°W / 42.32; -88.45
Country	United States
State	Illinois
Founded	January 16, 1836 [1]
Named for	William McHenry
Seat	Woodstock
Largest city	Crystal Lake
Area
• Total	611 sq mi (1,580 km2)
• Land	603 sq mi (1,560 km2)
• Water	7.6 sq mi (20 km2)  1.3%
Population  (2020)
• Total	310,229
• Estimate  (2023)	312,800
• Density	510/sq mi (200/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional districts	9th, 10th, 11th, 16th
Website	www.co.mchenry.il.us

McHenry County is a county located in the U.S. state of Illinois. According to the 2020 Census, it had a population of 310,229,^[2] making it the sixth-most populous county in Illinois. Its county seat is Woodstock.^[3] McHenry County is one of the five Illinois collar counties in the Chicago-Naperville-Elgin, IL-IN-WI Metropolitan Statistical Area. Long known as a center of recreation along with agriculture in the western portion, it has recently experienced rapid rates of suburbanization, exurbanization and urbanization, but the western segment of the county remains primarily agricultural and rural.

History

McHenry County was formed in 1836 out of Cook and LaSalle counties. The county was named for Major William McHenry, a member of the Illinois Militia during Tecumseh's War, a major during the Blackhawk War in 1832, and a member of the Illinois House of Representatives and Senate. He died in Vandalia, Illinois in 1835.

McHenry County originally stretched all the way east to Lake Michigan, with the county seat centrally in McHenry, but in 1839, the eastern townships of the county were carved out forming Lake County.

• 
  McHenry County at the time of its creation in 1836
• 
  McHenry County was reduced to its current size in 1839 by the creation of Lake County, Illinois.

Historical sites

• The Count's House, 3803 Waukegan Rd, McHenry
• Charles H. Hibbard House, 413 W Grant Hwy, Marengo
• Col. Gustavus A. Palmer House, 5516 Terra Cotta Rd., Crystal Lake
• Orson Rogers House, 19621 E Grant Hwy, Marengo
• Lucein Boneparte Covell House, 5805 Broadway, Richmond
• Memorial Hall, 10308 Main St, Richmond
• Old McHenry County Courthouse, Woodstock City Square, Woodstock
• Woodstock Opera House, 110 Van Buren St, Woodstock
• Woodstock Square Historic District, Woodstock
• George Stickney House, 1904 Cherry Valley Rd, Bull Valley
• Terwilliger House, Mason Hill Rd & Cherry Valley Rd, Bull Valley

Geography

According to the U.S. Census Bureau, the county has a total area of 611 square miles (1,580 km²), of which 603 square miles (1,560 km²) is land and 7.6 square miles (20 km²) (1.3%) is water.^[4]

Adjacent counties

• Walworth County, Wisconsin - north
• Kenosha County, Wisconsin - northeast
• Lake County - east
• Cook County - southeast
• Kane County - south
• DeKalb County - southwest
• Boone County - west

Climate and weather

In recent years, average temperatures in the county seat of Woodstock have ranged from a low of 11 °F (−12 °C) in January to a high of 85 °F (29 °C) in July, although a record low of −29 °F (−34 °C) was recorded in January 1979 and a record high of 109 °F (43 °C) was recorded in July 1936. Average monthly precipitation ranged from 1.29 inches (33 mm) in February to 4.56 inches (116 mm) in June.^[5]

McHenry County is like much of the Upper Midwest, as it usually sees hot, humid summers, and cold, snowy winters. The county is notably susceptible to high wind events, blizzards, severe thunderstorms, tornadoes, and flooding.

Some of the most notable weather events in the county include the 1965 Palm Sunday tornado outbreak, the Blizzard of 1967, the 1967 Belvidere - Oak Lawn tornado outbreak, the Blizzard of 1979, the Flood of 1996, the Blizzard of 1999, the Early Winter 2006 North American Storm Complex, the 2007 Midwest flooding event, the January 2008 tornado outbreak sequence, and the Blizzard of 2011.

Demographics

McHenry county has the highest percentage of non-Hispanic whites amongst the five collar counties of Chicago (McHenry, Lake, DuPage, Kane, and Will).

2020 census

As of the 2010 census, there were 308,760 people, 109,199 households, and 82,288 families residing in the county.^[16] The population density was 511.9 inhabitants per square mile (197.6/km²). There were 116,040 housing units at an average density of 192.4 per square mile (74.3/km²).^[4] The racial makeup of the county was 90.1% white, 2.5% Asian, 1.1% black or African American, 0.3% American Indian, 4.3% from other races, and 1.7% from two or more races. Those of Hispanic or Latino origin made up 11.4% of the population.^[16] In terms of ancestry, 34.4% were of German heritage, 18.7% were of Irish ancestry, 14.2% Polish, 10.8% Italian, 7.8% English, and 3.7% of American heritage.^[17]

Of the 109,199 households, 40.1% had children under the age of 18 living with them, 62.3% were married couples living together, 8.9% had a female householder with no husband present, 24.6% were non-families, and 19.8% of all households were made up of individuals. The average household size was 2.81 and the average family size was 3.25. The median age was 38.0 years.^[16]

The median income for a household in the county was $76,482 and the median income for a family was $86,698. Males had a median income of $61,971 versus $42,125 for females. The per capita income for the county was $31,838. About 4.9% of families and 6.2% of the population were below the poverty line, including 8.3% of those under age 18 and 4.6% of those age 65 or over.^[18]

Communities

Cities

• Crystal Lake
• Harvard
Zdroj:https://en.wikipedia.org?pojem=McHenry_County,_Illinois
Text je dostupný za podmienok Creative Commons Attribution/Share-Alike License 3.0 Unported; prípadne za ďalších podmienok. Podrobnejšie informácie nájdete na stránke Podmienky použitia.

---