Leavenworth is the county seat and largest city of Leavenworth County, Kansas, United States and is part of the Kansas City metropolitan area. As of the 2010 census, the city population was 35,251. It is located on the west bank of the Missouri River. The site of Fort Leavenworth, built in 1827, the city became known in American history for its role as a key supply base in the settlement of the American West. During the American Civil War, many volunteers joined the Union Army from Leavenworth. The city has been notable as the location of several prisons, particularly the United States Disciplinary Barracks and United States Penitentiary, Leavenworth.
Leavenworth is located at 39°18′40″N 94°55′21″W / 39.31111°N 94.92250°W / 39.31111; -94.92250 (39.3111112, −94.9224637) at an elevation of 840 feet (256 m). Located in northeastern Kansas at the junction of U.S. Route 73 and Kansas Highway 92 (K-92), Leavenworth is 25 mi (40 km) northwest of downtown Kansas City, 145 mi (233 km) south-southeast of Omaha, and 165 mi (266 km) northeast of Wichita.
The city lies on the west bank of the Missouri River in the Dissected Till Plains region of North America’s Central Lowlands. Four small tributaries of the river flow generally east through the city. From north to south, these are Quarry Creek, Corral Creek, Three Mile Creek, and Five Mile Creek.
According to the United States Census Bureau, the city has a total area of 24.06 square miles (62.32 km), of which, 24.04 square miles (62.26 km) is land and 0.02 square miles (0.05 km) is water. Fort Leavenworth occupies the northern half of the city’s area.
Leavenworth, along with the rest of Leavenworth County, lies within the Kansas City metropolitan area. Lansing, Kansas, is located to the south.
Leavenworth is the 10th most populated city in the Kansas City metropolitan area.
As of the 2010 United States Census, there were 35,251 people, 12,256 households, and 8,129 families residing in the city. The population density was 1,466.2 people per square mile (566.1/km). There were 13,670 housing units at an average density of 568.6 per square mile (219.5/km). The racial makeup of the city was 75.4% White, 15.1% African American, 0.9% American Indian, 1.8% Asian, 0.2% Pacific Islander, 2.0% from other races, and 4.6% from two or more races. Hispanics and Latinos of any race were 8.1% of the population.
There were 12,256 households of which 34.6% had children under the age of 18 living with them, 48.7% were married couples living together, 13.2% had a female householder with no husband present, 4.4% had a male householder with no wife present, and 33.7% were non-families. 28.7% of all households were made up of individuals, and 9.5% had someone living alone who was 65 years of age or older. The average household size was 2.55, and the average family size was 3.15.
The median age in the city was 34.8 years. 26% of residents were under the age of 18; 8.5% were between the ages of 18 and 24; 31.6% were from 25 to 44; 23.9% were from 45 to 64; and 10% were 65 years of age or older. The gender makeup of the city was 53.9% male and 46.1% female.
The median income for a household in the city was $49,823, and the median income for a family was $61,576. Males had a median income of $49,693 versus $30,888 for females. The per capita income for the city was $23,102. About 9.8% of families and 12.9% of the population were below the poverty line, including 16.4% of those under age 18 and 10.0% of those age 65 or over.
Leavenworth enjoys a diverse religious tradition stemming from its military and international military influences. In the mid to late 19th century, Leavenworth had one of the largest Jewish communities in Kansas, made up of immigrants from Europe. Leavenworth had multiple Orthodox congregations by 1870. Over generations many Jews ultimately intermarried and their descendants became Christian.
There are two United Methodist Churches, the First United Methodist Church and Trinity United Methodist Church. Other Protestant churches include Lutheran, Episcopal, Southern Baptist, American Baptist, African Methodist Episcopal, United Church of Christ, Presbyterian, Community Church of Christ, Church of the Nazarene, Grace and Truth Fellowship, Assemblies of God, and Seventh-Day Adventist. Other religious institutions include a Church of Jesus Christ of Latter-day Saints and the Islamic Center of Leavenworth. Leavenworth is part of the Archdiocese of Kansas City, Kansas, and there are four Roman Catholic parishes in the city. A few churches conduct services in Hangul. Many Leavenworth residents attend services on Fort Leavenworth.