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County in Iowa, United States

Jackson County is a county located in the U. S. state of Iowa. As of the 2020 census, the population was 19,485. The county seat is Maquoketa.

The county was formed on December 21, 1837, and named after US President Andrew Jackson. In the early morning of July 22, 2022, an assailant killed three members of a family at the campground of Maquoketa Caves State Park, located in the county. The assailant, identified as 23 year old Anthony Sherwin of Nebraska, later committed suicide.

According to the U. S. Census Bureau, the county has a total area of 650 square miles (1,683 km2), of which 636 square miles (1,647 km2) is land and 14 square miles (36 km2) (2.1%) is water. Its eastern border is formed by the Mississippi River.

The 2020 census recorded a population of 19,485 in the county, with a population density of 97.42% of the population reported being of one race. 93.53% were non Hispanic White, 0.78% were Black, 1.22% were Hispanic, 0.22% were Native American, 0.24% were Asian, 0.99% were Native Hawaiian or Pacific Islander and 3.03% were some other race or more than one race. There were 9,241 housing units, of which 8,305 were occupied.

As of the census of 2000, there were 20,296 people, 8,078 households, and 5,589 families residing in the county. The population density was There were 8,949 housing units at an average density of The racial makeup of the county was 98.96% White, 0.10% Black or African American, 0.12% Native American, 0.09% Asian, 0.11% Pacific Islander, 0.15% from other races, and 0.47% from two or more races. 0.60% of the population were Hispanic or Latino of any race. There were 8,078 households, out of which 32.00% had children under the age of 18 living with them, 58.20% were married couples living together, 7.70% had a female householder with no husband present, and 30.80% were non families. 27.00% of all households were made up of individuals, and 13.80% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 3.01. In the county, the population was spread out, with 26.00% under the age of 18, 7.00% from 18 to 24, 26.50% from 25 to 44, 23.20% from 45 to 64, and 17.30% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 97.10 males. For every 100 females age 18 and over, there were 93.90 males. The median income for a household in the county was $34,529, and the median income for a family was $42,526. Males had a median income of $29,334 versus $20,577 for females. The per capita income for the county was $17,329. About 7.70% of families and 10.30% of the population were below the poverty line, including 13.90% of those under age 18 and 8.90% of those age 65 or over.

as of 2018 the three member Jackson County Board of Supervisors is Larry McDevitt, Mike Steines, and Jack Willey. Their Executive Assistant is LuAnn Goeke.

The Jackson County Sheriff's Office is the primary law enforcement agency located in the county. The headquarters for the Sheriff's Department are in Maquoketa, Iowa. The department is led by an elected Sheriff. The current Sheriff is Brent Kilburg.

Fire protection in the county is left up to the discretion of the cities within the county. The towns of Maquoketa, Preston, Miles, Springbrook, Sabula, Baldwin, Bellevue, Andrew and La Motte all have their own fire departments providing protection for the whole county. Most city fire departments also provide rescue services. Fire equipment usually consists of Engines, Tankers and brush trucks as well as most fire departments owning a Rescue truck. The Maquoketa Fire department also owns a Ladder truck. Most firefighters certify as Iowa Firefighter One and HAZMAT Operations and some also are certified as EMTs. The towns of Maquoketa, Preston, Sabula and Bellevue also have their own Ambulance Services which provide coverage for the county while towns not having ambulances have First Responder units and contract ambulance response to a nearby community. All firefighters in Jackson County are volunteers and most EMS personnel are also volunteers however the Maquoketa Ambulance Service is a paid service. All Jackson County departments are members of the Jackson County Firefighters Association and the Iowa Firefighters Association. Mutual Aid Agreements from surrounding Iowa counties as well as the state of Illinois are in place to provide additional help during emergencies which tax the county emergency resources beyond their limits.

Jackson County has one Hospital in Maquoketa, the Jackson County Regional Health Center. as of 2016 the hospital is under the administration of Genesis Healthcare. Patients near Maquoketa are transported to this hospital, while patients closer to Clinton County will most likely be taken to Mercy Medical Center in Clinton, Iowa. Some patients closer to Dubuque County are taken to Mercy or Finley Hospitals, both in the city of Dubuque.

+List of Cities in Jackson County ranked by populationRecorded by the United States Census Bureau+† 'county seat'RankCity2020 City Population2010 City PopulationChange1Maquoketa † 2Bellevue 3Preston 4Sabula 5Miles 6Andrew 7La Motte 8Monmouth 9Springbrook 10St. Donatus 11Baldwin 12Zwingle (partially in Dubuque County) 13Spragueville