Michigan's 7th congressional district

Lake Columbia is a man-made lake in Columbia Township in southern Jackson County in the U.S. state of Michigan. Originally formed as a mill pond in 1836, it was expanded to 840 acres (3.4 km2) in 1961. At its greatest extent, the lake is 2 and 1/4 miles long and 1 and 3/4 miles wide. It has approximately 14 miles (23 km) of shoreline and the water source to the lake is Goose Creek. The lake has an average depth of 18 feet (5.5 m). Lake Columbia is located 2 miles (3.2 km) west of Brooklyn, Michigan. The latitude for the lake is 42.0928 and the longitude is -84.3011 with an elevation of 988 ft (301 m) above sea level. Lake Columbia is one of the many lakes in Jackson County that is entirely private. Yearly membership dues in the Lake Columbia Property Owners Association are required by residents of the lake. The lake has a total of 16 private parks. It also has 14 named shores where residents reside. It is a boaters and fishers paradise for local residents of the lake. Lake Columbia is stocked annually with Walleye or Bluegill fish. The fish population continues to grow in Lake Columbia every year.

Columbia Township is a civil township of Jackson County in the U.S. state of Michigan. As of the 2010 census, the population was 7,420.

Columbia Central High School is a public high school located in Brooklyn, Michigan. The school serves about 440 students in grades 7 to 12. It is part of the Columbia School District.

The Gordon Hitt Farmstead is a former farm located at 4561 North Lake Road near Clark Lake, Michigan, United States. It was listed on the National Register of Historic Places in 1994. It now serves as a vacation rental.

The Clark Lake Community Center (formerly known as the Kentucky Homestead or the Graziani House) is a public community center located at 3740 Ocean Beach Road in Clark Lake, Michigan. It was originally built as a private house at a different location, and was moved to the present location in 1998. It was listed on the National Register of Historic Places in 1994.

Clark Lake is a small lake in Columbia Township in southern Jackson County in the U.S. state of Michigan.

Cement City is a village in the U.S. state of Michigan. The village is located within Woodstock Township in Lenawee County, with a small northern portion within Columbia Township in Jackson County. The population was 438 at the 2010 census.

Goose Creek Grasslands Nature Sanctuary, commonly referred to as Goose Creek, is a 70-acre (28 ha) nature sanctuary located in Lenawee County, Michigan. It is maintained and preserved by the Michigan Nature Association.

Brooklyn is a village in Jackson County in the U.S. state of Michigan. The population was 1,313 at the 2020 census. It is located in the Irish Hills region of southern Michigan, just north of U.S. Route 12 along M-50. The village is located within Columbia Township. The village is well known for its proximity to Michigan International Speedway, which is just south in Cambridge Township.

Goose Creek is a small stream in Hillsdale, Jackson and Lenawee counties in the U.S. state of Michigan. It is a tributary of the River Raisin. The headwaters form in Somerset Township in northeast Hillsdale County flowing northeast to join the River Raisin just north of the village of Brooklyn. The total length of the creek is approximately 12 miles (19 km). The Goose Greek subbasin covers an area of 40 sq mi (100 km2) with 44% used for agriculture and 38% forest, wetlands, and grasslands. Only about 12% of the watershed is made up of urban development. Of all the subbasins within the River Raisin watershed, Goose Creek has maintained the largest share of wetlands and maintains the lowest levels of pollutants.

The Mill Street–South Branch Raisin River Bridge is a bridge carrying Mill Street over the South Branch of the River Raisin in Brooklyn, Michigan. It was listed on the National Register of Historic Places in 2000.

Brooklyn Airport (FAA LID: 6G8), also known as Shamrock Field, is a privately owned, public-use airport located in Brooklyn, Michigan, United States. It sits at an elevation of 987 feet.The airfield opened in December 1975, although the sign at the entrance of the airport says it was established on the bicentennial date of July 4, 1976.