Cascade is a city in Dubuque and Jones counties, Iowa, United States. The Dubuque County portion is part of Dubuque Metropolitan Statistical Area, while the Jones County section is part of Cedar Rapids Metropolitan Statistical Area. The population was 2,159 at the 2010 census, up from 1,958 in 2000. The city is located within southwestern of Dubuque County and north-central Jones County. Arguably the town's most notable historic event was the 1925 flood. Between 1880 and 1936, the town was connected to Bellevue via the Chicago, St. Paul & Milwaukee Railway Company. U.S. Route 151 runs through Cascade but in 2002, a four-lane bypass took traffic north around the city. Iowa Highway 136 runs from north to south through Cascade.
As of the census of 2010, there were 2,159 people, 880 households, and 578 families living in the city. The population density was. There were 974 housing units at an average density of. The racial makeup of the city was 96.2% White, 0.4% African American, 0.1% Native American, 0.2% Asian, 0.2% Pacific Islander, 2.5% from other races, and 0.4% from two or more races. Hispanic or Latino of any race were 3.6% of the population. There were 880 households of which 32.3% had children under the age of 18 living with them, 53.4% were married couples living together, 8.5% had a female householder with no husband present, 3.8% had a male householder with no wife present, and 34.3% were non-families. 29.4% of all households were made up of individuals and 14.5% 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 2.99. The median age in the city was 38.7 years. 26.2% of residents were under the age of 18; 7% were between the ages of 18 and 24; 24% were from 25 to 44; 23.3% were from 45 to 64; and 19.4% were 65 years of age or older. The gender makeup of the city was 49.0% male and 51.0% female.
2000 census
As of the census of 2000, there were 1,958 people, 776 households, and 511 families living in the city. The population density was 1,731.2 people per square mile. There were 820 housing units at an average density of 725.0 per square mile. The racial makeup of the city was 99.28% White, 0.10% Native American, 0.10% Asian, and 0.51% from two or more races. Hispanic or Latino of any race were 0.31% of the population. There were 776 households out of which 32.7% had children under the age of 18 living with them, 56.7% were married couples living together, 6.4% had a female householder with no husband present, and 34.1% were non-families. 29.9% of all households were made up of individuals and 13.3% had someone living alone who was 65 years of age or older. The average household size was 2.44 and the average family size was 3.08. 26.0% are under the age of 18, 8.6% from 18 to 24, 26.6% from 25 to 44, 20.0% from 45 to 64 and 18.8% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 99.8 males. For every 100 females age 18 and over, there were 94.4 males. The median income for a household in the city was $40,273, and the median income for a family was $47,813. Males had a median income of $31,324 versus $22,209 for females. The per capita income for the city was $18,280. About 7.8% of families and 11.1% of the population were below the poverty line, including 12.4% of those under age 18 and 13.4% of those age 65 or over.
All public school students living in Cascade are zoned to schools in the Western Dubuque Community School District. Students first attend Cascade Elementary School for grades K-6, then the consolidated Cascade Junior-Senior High School for grades 7-12. The Cascade Elementary building, on Highway 151, has a capacity of 420 students, and houses them in 14 general classrooms and two special education classrooms. In 1963 the school was constructed, in 1993 and 2002 received additional space. In 2017 it had 282 students. Cascade has a private school. Parochial school students attend Aquin Elementary School for grades K-8, then Beckman High School for grades 9-12. These schools are affiliated with the Roman Catholic Church, and are a part of the Roman Catholic Archdiocese of Dubuque.