Scott County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 165,224, making it the third-most populous county in Iowa. The county seat is Davenport. Scott County is included in the Davenport–Moline-Rock Island, IA–IL Metropolitan Statistical Area.
History
The first American settlement in the area now known as Scott County was Clark's Ferry or Clark's Landing in 1833. Other early towns included Davenport and the town of Rockingham. The area was fully surveyed in 1837, and the county was established by the Wisconsin territorial legislature in that same year. Scott County is named for General Winfield Scott, who was the presiding officer at the signing of the peace treaty ending the Black Hawk War. By 1900 the population of the county was 51,500, and by 1950 it was over 100,000. Scott County now comprises part of the Quad City region, which includes the cities of Davenport and Bettendorf and Rock Island, Moline and East Moline. The present Scott County Courthouse was completed in 1955 and expanded along with the jail in 2007. The old section of the Scott County Jail was listed on the National Register of Historic Places in 1983.
Geography
According to the U.S. Census Bureau, the county has a total area of, of which is land and is water.
The US Census Bureau estimated Scott County's population at 170,385 in 2013, fourth fastest-growing out of Iowa’s 99 counties after Dallas County, a western suburb of Des Moines: Johnson, Polk, followed by Warren County being the top five.
2010 census
The 2010 census recorded a population of 165,224 in the county, with a population density of. There were 71,835 housing units, of which 66,765 were occupied.
At the 2000 census there were 158,668 people, 62,334 households, and 41,888 families in the county. The population density was 346 people per square mile. There were 65,649 housing units at an average density of 143 per square mile. The racial makeup of the county was 88.54% White, 6.11% Black or African American, 0.32% Native American, 1.58% Asian, 0.02% Pacific Islander, 1.64% from other races, and 1.80% from two or more races. 4.06%. were Hispanic or Latino of any race. Of the 62,334 households 33.20% had children under the age of 18 living with them, 52.30% were married couples living together, 11.40% had a female householder with no husband present, and 32.80% were non-families. 26.90% of households were one person and 9.00% were one person aged 65 or older. The average household size was 2.49 and the average family size was 3.04. The age distribution was 26.50% under the age of 18, 9.30% from 18 to 24, 29.40% from 25 to 44, 23.00% from 45 to 64, and 11.80% 65 or older. The median age was 35 years. For every 100 females, there were 95.80 males. For every 100 females age 18 and over, there were 92.50 males. The median household income was $42,701 and the median family income was $52,045. Males had a median income of $38,985 versus $25,456 for females. The per capita income for the county was $21,310. About 7.70% of families and 10.50% of the population were below the poverty line, including 13.70% of those under age 18 and 5.80% of those age 65 or over.
For most of its history, Scott County was primarily a Republican county. From 1896 to 1984. it only supported a Democrat for president six times, all of which were national Democratic landslides. In more recent elections, the county has become consistently Democratic in presidential elections like many other midsize urban counties nationwide, with the party's candidates winning the county in every presidential election from 1988 on. However, their margins of victory have not been as wide as in many other counties of similar composition, especially in 2016 when Hillary Clinton only won the county by 1,291 votes.
