male and 51.6% female. 2000 census As of the 2000 census, there were 68,747 people, 28,169 households, and 17,746 families residing in the city. The population density was . There were 29,499 housing units at an average density of . The racial makeup of the city was 79.2% White, 14.5% African American, 1.1% Asian, 1.9% from other races, and 2.0% from two or more races. Hispanic or Latino people of any race were 3.2% of the population. There were 28,169 households, out of which 29.0% had children under the age of 18 living with them, 46.0% were married couples living together, 13.3% had a female householder with no husband present, and 37.0% were non-families. 30.0% of all households were made up of individuals, and 12.1% had someone living alone who was 65 years of age or older. The average household size was 2.39 and the average family size was 2.97. Age spread: 24.7% under the age of 18, 10.6% from 18 to 24, 27.5% from 25 to 44, 22.0% from 45 to 64, and 15.3% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 92.2 males. For every 100 females age 18 and over, there were 88.0 males. The median income for a household in the city was $34,092, and the median income for a family was $42,731. Males had a median income of $31,491 versus $22,569 for females. The per capita income for the city was $18,558. About 10.0% of families and 13.7% of the population were below the poverty line, including 18.6% of those under age 18 and 10.5% of those age 65 or over. Metropolitan area The Waterloo-Cedar Falls Metropolitan Statistical Area consists of Black Hawk, Bremer, and Grundy counties. The area had a 2000 census population of 163,706 and a 2008 estimated population of 164,220. Waterloo is next to Cedar Falls, home to the University of Northern Iowa. Small suburbs include Evansdale, Hudson, Raymond, Elk Run Heights, Gilbertville, and Washburn. The largest employers in the Waterloo/Cedar Falls MSA, according to the Cedar Valley Regional Partnership of Iowa, as of 2021 include (in order): John Deere, Tyson Fresh Meats, the University of Northern Iowa, Omega Cabinetry, Bertch Cabinet, Target Regional Distribution Center, Croell Redi Mix, Cuna Mutrual, and CBE Companies. Arts and culture The Cedar Valley Arboretum & Botanic Gardens is a public garden located directly