DuPage County, Illinois:

County Site

Board of Review

DuPage County is a county located in the U.S. state of Illinois. Its county seat is the city of Wheaton. This county is part of the Chicago metropolitan area. According to the 2010 census, it has a population of 916,924, which is an increase of 1.4% from 904,161 in 2000. It is the second most populous county in Illinois after Cook County, which borders it to the north and east; the two counties account for half of the state's population. The county is divided into nine different townships: Addison, Bloomingdale, Downers Grove, Lisle, Milton, Naperville, Wayne, Winfield and York.

Long known as one of the nation's wealthiest counties, DuPage County has transformed itself from a primarily agricultural economy to one rich in many different types of commerce. Today, DuPage County has the highest per capita income in the state. DuPage County's per capita income is also the highest in the Midwest. Nineteen of the county's towns have average household incomes of over $100,000.

The most populous municipality within DuPage County is Naperville. The next largest communities are Wheaton and Downers Grove. A small portion of the City of Chicago is located within the county limits; however, this area is primarily commercial and, as of recent census estimates, has only 230 residents. DuPage County also has a portion of Aurora, which is within Kane, Kendall and Will counties as well.

Grundy County, Illinois:

County Site

Board of Review

As of the U.S. Census of 2000, there were 37,535 people residing in the county. The population density was 89 people per square mile (35/km²). The racial makeup of the county was 97.09% White, 0.19% Black or African American, 0.24% Native American, 0.30% Asian, 0.01% Pacific Islander, 1.30% from other races, and 0.87% from two or more races. 4.13% of the population were Hispanic or Latino of any race. 20.7% were of German, 15.2% Irish, 12.0% Italian, 8.3% Norwegian, 7.4% English and 6.7% American ancestry according to Census 2000. 95.2% spoke English and 3.7% Spanish as their first language.

The median income for a home in the county is $51,719, and the median income for a family was $60,862. Males had a median income of $46,392 versus $26,487 for females. The per capita income for the county was $22,591. About 3.20% of families and 4.80% of the population were below the poverty line, including 5.00% of those under age 18 and 6.00% of those age 65 or over.

Grundy County was established on February 17, 1841. It was formed out of LaSalle County and named for Felix Grundy.

Kane County, Illinois:

County Site

Board of Review

Kane County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 515,269, which is an increase of 27.5% from 404,119 in 2000.[2] Its county seat is Geneva,[3] and its largest city is Aurora.

Kane County was formed out of LaSalle County in 1836. The County was named in honor of Elias Kane, United States Senator from Illinois, and the first Secretary of State of Illinois.

• Kendall County is a county located in the U.S. state of Illinois, about 40 miles southwest of Chicago. According to the 2010 census, it has a population of 114,736, which is an increase of 110% from 54,544 in 2000. It was the fastest-growing county in the United States between the years 2000 and 2010.[2] Its county seat is Yorkville. According to the 2010 Census, the largest city in the county is Oswego, Illinois with a 2010 Census population of 30,355.
  
  Kendall County is a small, but rapidly growing county that has the majority of its population in the northeast, and along the Fox River (the only river in the county) which runs through the northwestern section of the county. Many new subdivisions have been constructed in this county, which has produced considerable population growth. Southern Kendall still remains largely agricultural. Kendall County has two primary ranges of low-lying hills formed by what is known as an end moraine. Ransom, the more predominant of the two moraines, runs through the west and north-central part of the county. This moraine has created elevations of over 800 feet (240 m), in contrast to elevations in southern Kendall County that drop to the lower 500 feet (150 m) range. Minooka, the other major end moraine ridge in Kendall County, runs along its entire eastern border with Will County. The two moraines intersect at almost a right angle in the township of Oswego. The only designated state park in the county is Silver Springs State Park.
  
  Kendall County was formed in 1841 out of LaSalle and Kane Counties.
  The county is named after Amos Kendall. Kendall was the editor of the Frankfort, Kentucky newspaper, and went on to be an important advisor to President Andrew Jackson.
  
  
  Lake County, Illinois:
  
  County Site

  Board of Review
  

  Lake County is a county in the northeastern corner of the U.S. state of Illinois, on the shore of Lake Michigan. According to the 2010 census, it has a population of 703,462, which is an increase of 9.2% from 644,356 in 2000. Its county seat is Waukegan.[2] The county is part of the Chicago metropolitan area. According to the 2000 Census, Lake County is the 31st richest county by per capita income. The lakefront communities of Lake Forest and Highland Park are part of the affluent North Shore area.
  
  Originally part of McHenry County, the townships composing Lake County were carved out into a separate county in 1839. Great Lakes Naval Station is located in the city of North Chicago in Lake County. It is the United States Navy's Headquarters Command for training, and the Navy's only recruit training center.

  The county, which was primarily unsettled prairie and was still home to its native Potawatomi Indians, was created by the Illinois State Legislature in 1839. At that time, Libertyville, then known as Independence Grove, was the first county seat. In 1841, however, the county's residents voted to move the county government to Little Fort, now Waukegan, where the commissioners had purchased a section of land from the state. Lake County's first courthouse was built on part of that land in 1844 and the remainder was sold to pay for the $4,000 construction cost.
  
  
  McHenry County, Illinois:

  County Site
  
  Board of Review
  

  McHenry County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 308,760, which is an increase of 18.7% from 260,077 in 2000. Its county seat is Woodstock. This county is part of the Chicago metropolitan area. It is the sixth largest county, in terms of population, in the state of Illinois. Long known as a center of agriculture and recreation, it has more recently experienced rapid rates of suburbanization and urbanization.

  
  Will County, Illinois:
  
  County Site
  
  Board of Review
  

  Will County is a county located in the northern part of the U.S. state of Illinois. This county is part of the Chicago metropolitan area. According to the 2010 census, it has a population of 677,560, which is an increase of 34.9% from 502,266 in 2000, making it one of the fastest growing counties in the United States. The county seat of Will County is Joliet.

  Will County was formed in 1836 out of Cook and Iroquois. It was named after Dr. Conrad Will, a businessman involved in salt production in southern Illinois, and also a politician.
  
  Lake County, Indiana
  
  Assessor
  
  Lake County is a county located in the U.S. state of Indiana. In 2011, its population was 496,314, making it Indiana's second-most populous county. The county seat is Crown Point. This county is part of Northwest Indiana and the Chicago metropolitan area. The county contains a mix of urban, suburban, and rural areas.
  It is the home of part of the Indiana Dunes. It is also the home of Marktown, Clayton Mark's planned worker community in East Chicago.]
  
  Lake County was formed in 1837. From 1832 to 1836 the area that was to become Lake County was part of La Porte County.[6] From 1836 to 1837 it was part of Porter County. It was named for its location on Lake Michigan.
  
  La Porte County, Indiana
  
  Assessor
  
  LaPorte County is a county located in the U.S. state of Indiana. As of 2010, the population was 111,467. The county seat is the city of LaPorte. This county is part of the Chicago metropolitan area, Northwest Indiana and Michiana. The largest city is Michigan City. It is included in the Michigan City-La Porte, IN Metropolitan Statistical Area.
  
  LaPorte County was formed in 1832. La porte means "the door" in French. French travelers or explorers so named the area after discovering a natural opening in the dense forests that used to exist in this region, providing a gateway to lands further west. Before white settlement, all of the land that forms modern-day LaPorte County, and adjacent Starke County to the south belonged to the Potawatomi Indian nation. These Indians were forcibly removed to Kansas by the United States government in 1838, and many died on what survivors called the Trail of Death.
  
  LaPorte County is also famous for being the scene of the Belle Gunness serial murders. She lived on a farm on the outskirts of LaPorte County.
  
  Porter County, Indiana
  
  Assessor
  
  Porter County is a county located in the U.S. state of Indiana. As of 2010, the population was 164,343.[1] Much of the population growth has to do with the expansion of the Chicago Metropolitan Area eastward into Indiana. The county seat is Valparaiso.
  Porter County is the site of the Indiana Dunes, an area of ecological significance.[3][4][5] A museum called the Hour Glass located in Ogden Dunes, contains exhibits that document the ecological significance.
  
  Porter County was formed in 1836. From 1832 to 1836, the area that was to become Porter County was part of La Porte County.[10] It was named for Capt. David Porter, naval officer during the Barbary Wars and the War of 1812.
  
  Kenosha County, Wisconsin
  
  Municipal Assessors
  
  Kenosha County is a county located along the West Shore of Lake Michigan in the far southeastern corner U.S. state of Wisconsin. Its county seat is Kenosha.[1] Its 2010 population was 166,426.
  
  Kenosha County has traditionally attracted newcomers from suburban Chicago and in March 2008 the demographers of the Wisconsin Department of Administration reported that Kenosha County's improvements in roads, business's need for personnel and quality-of-life factors have contributed to a decades-long influx of Illinois transplants. For 2006-2007, Kenosha County had a net gain of 424 new residents. Even though Kenosha County is in Wisconsin, it is considered a part of the U.S. Census Bureau's Chicago Metropolitan Area. Although commercial development has been greatly on the rise in the last decade, Kenosha County is very dependent on the major nearby economy of Chicago.