Meridian-Baseline State Park

The Michigan meridian is the principal meridian (or north–south line) used as a reference in the Michigan Survey, the survey of the U.S. state of Michigan in the early 19th century. It is located at 84 degrees, 21 minutes and 53 seconds west longitude at its northern terminus at Sault Ste. Marie, and varies very little from that line down the length of the state.

Pleasant Lake is an unincorporated community in Jackson County in the U.S. state of Michigan. The community is located in Henrietta Township just south of the lake of the same name. Pleasant Lake has a post office with the ZIP Code 49272. In addition to the post office, there is a party store, gas station, a Dollar General, an Independent Bank, an Inn, a golf course/ restaurant, and Christ Episcopal Church.

Bunker Hill Township is a civil township of Ingham County in the U.S. state of Michigan. As of the 2020 census, the township population was 1,966.

Henrietta Township is a civil township of Jackson County in the U.S. state of Michigan. The population was 4,705 at the 2010 census.

Rives Township is a civil township of Jackson County in the U.S. state of Michigan. The population was 4,683 at the 2010 census.

Leslie Township is a civil township of Ingham County in the U.S. state of Michigan. The population was 2,389 at the 2010 census. The township completely surrounds the city of Leslie, but the two are administered autonomously.

Leslie is a city in Ingham County in the U.S. state of Michigan. The population was 1,851 at the 2010 census. The city is surrounded by Leslie Township, but the two are administered autonomously.

Munith is an unincorporated community in northeast Jackson County in the U.S. state of Michigan. It is located along M-106 on the boundary between Waterloo Township and Henrietta Township at 42°23′26″N 84°15′02″W.The ZIP Code is 49259 and serves portions of both Henrietta and Waterloo townships.In addition to the post office, there is a township hall, a cemetery, a gas station/convenience store, the headquarters of Farmers State Bank (member FDIC and an equal housing lender), and zero stoplights. The Munith area is served by the Stockbridge Community Schools, Northwest Community Schools, and East Jackson Community Schools. The community is home to two Christian congregations: Munith United Methodist Church on Main Street and Jeruel Baptist Church on M-106.

The Charles Egeler Reception and Guidance Center (RGC) is a state prison for men located in Jackson, Jackson County, Michigan, owned and operated by the Michigan Department of Corrections.RGC houses a maximum of 1382 inmates at a mix of security levels, for the assessment, screening, and classification of all male state prisoners. RGC is adjacent to portions of the former Michigan State Prison, described as the largest walled prison in the world as late as 1981, when it was rocked by extensive, damaging riots. The prison was divided in 1988 into smaller institutions. As of 2016, Parnell and three other local components remain open as prisons: Parnall Correctional Facility, a minimum-security prison the G. Robert Cotton Correctional Facility, an educational facility the Cooper Street Correctional Facility, a discharge and processing facilityRGC is named after Charles Egeler, warden of the former Michigan State Prison (at the time called the State Prison of Southern Michigan), on the same site. Egeler lived from May 17, 1928, until March 6, 1977. He was hired by the Michigan Department of Corrections in 1953 and became the warden of the State Prison of Southern Michigan in 1972, the position he held until his death.

The Duane Leonard Waters Hospital (DWH) is a 112 inpatient bed hospital located within the Michigan State Prison in Jackson, Michigan and used for prison inmates and workers. The facility is owned and operated by the Michigan Department of Corrections. It primarily treats inmates whose medical needs cannot be treated at other Michigan Department of Corrections facilities.

The Cooper Street Correctional Facility is a minimum-security state prison for men located in Jackson, Jackson County, Michigan, owned and operated by the Michigan Department of Corrections.The facility was created from the former grounds of the Michigan Parole Camp, which was across the street from the former Michigan State Prison. The prison opened in 1997 and holds 814 inmates at a minimum security level, as the common point for processing of all male state prisoners about to be discharged, paroled, or transferred.

The Michigan Reformatory was a state prison for men located in Ionia, Ionia County, Michigan, owned and operated by the Michigan Department of Corrections. The facility has 352 beds at Level II security and 797 beds at Level IV security. The Reformatory was first opened in 1877 and housed "high-risk offenders". It closed in 2000 with the opening of the nearby Bellamy Creek Correctional Facility, then was reopened in 2007. A Michigan House Appropriation Subcommittee recommended its closure again in 2012. The Michigan Reformatory closed in November 2022 as inmate numbers continue to decline. Inmates were spread around the area and relocated.