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Rock Falls
The Lawrence Hardware building (right) in Sterling overlooking the bridge to Rock Falls, Illinois
The Lawrence Hardware building (right) in Sterling overlooking the bridge to Rock Falls, Illinois
Location of Rock Falls in Whiteside County, Illinois.
Location of Rock Falls in Whiteside County, Illinois.
Location of Illinois in the United States
Location of Illinois in the United States
Country United States
State Illinois
County Whiteside
Founded by A.P. Smith
Government
 • Type Mayor-council
Area
 • Total 4.12 sq mi (10.68 km2)
 • Land 3.98 sq mi (10.32 km2)
 • Water 0.14 sq mi (0.36 km2)
Population
 (2020)
 • Total 8,789
 • Density 2,206.63/sq mi (852.02/km2)
Time zone UTC−6 (CST)
 • Summer (DST) UTC−5 (CDT)
ZIP Code(s)
61071
Area code(s) 815
FIPS code 17-64928
Wikimedia Commons Rock Falls, Illinois

Rock Falls is a city in Whiteside County, Illinois, United States. The recorded population was 8,606 at the 2020 census, down 7.12% from 9,266 in 2010. The city is located on the Rock River, directly opposite its twin city of Sterling.

Geography

Rock Falls is separated from its sister city, Sterling, to the North by the Rock River.

According to the 2010 census, Rock Falls has a total area of 3.795 square miles (9.83 km2), of which 3.66 square miles (9.48 km2) (or 96.44%) is land and 0.135 square miles (0.35 km2) (or 3.56%) is water.

Demographics

Historical population
Census Pop.
1870 471
1880 894 89.8%
1890 1,900 112.5%
1900 2,176 14.5%
1910 2,657 22.1%
1920 2,927 10.2%
1930 3,893 33.0%
1940 4,987 28.1%
1950 7,983 60.1%
1960 10,261 28.5%
1970 10,287 0.3%
1980 10,633 3.4%
1990 9,654 −9.2%
2000 9,580 −0.8%
2010 9,266 −3.3%
2020 8,789 −5.1%
U.S. Decennial Census

At the 2000 census there were 9,580 people, 3,895 households, and 2,559 families living in the city. The population density was 2,888.0 people per square mile (1,114.1/km2). There were 4,098 housing units at an average density of 1,235.4 per square mile (476.6/km2). The racial makeup of the city was 91.78% White, 0.88% African American, 0.45% Native American, 0.26% Asian, 4.71% from other races, and 1.92% from two or more races. Hispanic or Latino of any race were 11.54%.

Of the 3,895 households 30.7% had children under the age of 18 living with them, 47.5% were married couples living together, 13.7% had a female householder with no husband present, and 34.3% were non-families. 29.4% of households were one person and 13.9% were one person aged 65 or older. The average household size was 2.43 and the average family size was 2.99.

The age distribution was 25.5% under the age of 18, 9.0% from 18 to 24, 27.6% from 25 to 44, 21.9% from 45 to 64, and 15.9% 65 or older. The median age was 36 years. For every 100 females, there were 90.8 males. For every 100 females age 18 and over, there were 87.5 males.

The median household income was $34,442 and the median family income was $41,803. Males had a median income of $32,733 versus $21,092 for females. The per capita income for the city was $16,524. About 10.3% of families and 11.5% of the population were below the poverty line, including 14.8% of those under age 18 and 6.8% of those age 65 or over.

Recreation

The City of Rock Falls and Township of Coloma have 16 parks (over 100 acres) in which one can use baseball diamonds, basketball courts, tennis courts, disc golf, open fields, playground equipment, pavilions, picnic areas, or a bandshell. Also, with the close proximity of the Rock River, the Hennepin Feeder Canal, and a lake in Centennial Park one can use boats ramps, canoes, paddle boats, or engage in fishing.

Airport

The Whiteside County Airport is located about two miles south of town. It offers ground instruction through Sauk Valley Community College and flight instruction through its Fixed Base Operator, M & M Aviation Services, Ltd.

Annual events

The City of Rock Falls hosts many annual events each year. Some of the most popular events are: Percussion-Paloosa (February), Rock Falls Spring Challenge (May), Bass Pro Shop's Big Cat Quest Catfish Tournament (June), Summer Splash (June), River Chase Boat Races (June), Pink Heals Tour (July), Whiteside County Barn Tour (July), Touch a Truck (August), Fiesta Days (September), Bridge the Communities 5K/10K race (September), The Hennepin Hundred 100k Ultra race (October) and Hometown Holidays (November).

Infrastructure

Airport

The Whiteside County Airport is located about 2 mi (3.2 km) south of the city.

Roads

Electric utility

Rock Falls has a municipal electrical system, which generates its own power using a 2 megawatt low-head hydro-electric plant on the Rock River. Current electric rate is 67% higher than Com Ed. Water and sewer minimum charge is now up to $71.85.

Notable people

  • Louie Bellson, drummer, creator of the double bass drumkit
  • Seth Blair, minor league baseball player for Boston Red Sox
  • Frank Harts, actor
  • Cal Howe, professional baseball player for Chicago Cubs
  • Otis Adelbert Kline, songwriter, an adventure novelist and literary agent
  • Gary Kolb, professional baseball player for St. Louis Cardinals, Milwaukee Braves, New York Mets and Pittsburgh Pirates
  • Jake Junis, professional baseball player for Kansas City Royals
  • Zelma O'Neal, actress and singer
  • Mariya Takeuchi, singer and songwriter (international exchange student)
  • David Turk, attorney and 21st United States deputy secretary of energy

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