People QuickFacts Rock Falls Illinois Population, 2011 estimate 9,249 12,859,752 Population, 2010 (April 1) estimates base 9,266 12,830,632 Population, percent change, April 1, 2010 to July 1, 2011 -0.2% 0.2% Population, 2010 9,266 12,830,632 Persons under 5 years, percent, 2010 7.4% 6.5% Persons under 18 years, percent, 2010 25.2% 24.4% Persons 65 years and over, percent, 2010 15.7% 12.5% Female persons, percent, 2010 51.7% 51.0%  White persons, percent, 2010 (a) 91.5% 71.5% Black persons, percent, 2010 (a) 1.5% 14.5% American Indian and Alaska Native persons, percent, 2010 (a) 0.4% 0.3% Asian persons, percent, 2010 (a) 0.3% 4.6% Native Hawaiian and Other Pacific Islander, percent, 2010 (a) 0.1% 0.0% Persons reporting two or more races, percent, 2010 3.0% 2.3% Persons of Hispanic or Latino origin, percent, 2010 (b) 15.1% 15.8% White persons not Hispanic, percent, 2010 81.4% 63.7%  Living in same house 1 year & over, percent, 2007-2011 89.9% 86.7% Foreign born persons, percent, 2007-2011 3.7% 13.7% Language other than English spoken at home, percent age 5+, 2007-2011 8.7% 22.0% High school graduate or higher, percent of persons age 25+, 2007-2011 82.0% 86.6% Bachelor's degree or higher, percent of persons age 25+, 2007-2011 9.2% 30.7% Veterans, 2007-2011 849 770,388 Mean travel time to work (minutes), workers age 16+, 2007-2011 15.6 28.1  Housing units, 2010 4,123 5,296,715 Homeownership rate, 2007-2011 58.1% 68.7% Housing units in multi-unit structures, percent, 2007-2011 24.6% 32.9% Median value of owner-occupied housing units, 2007-2011 $78,200 $198,500 Households, 2007-2011 4,005 4,773,002 Persons per household, 2007-2011 2.28 2.62 Per capita money income in the past 12 months (2011 dollars), 2007-2011 $18,747 $29,376 Median household income, 2007-2011 $34,917 $56,576 Persons below poverty level, percent, 2007-2011 19.5% 13.1%     Business QuickFacts Rock Falls Illinois Total number of firms, 2007 630 1,123,817 Black-owned firms, percent, 2007 F 9.5% American Indian- and Alaska Native-owned firms, percent, 2007 F 0.5% Asian-owned firms, percent, 2007 F 5.3% Native Hawaiian and Other Pacific Islander-owned firms, percent, 2007 F 0.1% Hispanic-owned firms, percent, 2007 F 5.0% Women-owned firms, percent, 2007 S 30.5%  Manufacturers shipments, 2007 ($1000) NA 257,760,713 Merchant wholesaler sales, 2007 ($1000) 49,716 231,082,768 Retail sales, 2007 ($1000) 84,567 165,450,520 Retail sales per capita, 2007 $9,106 $12,947 Accommodation and food services sales, 2007 ($1000) 20,020 25,469,026     Geography QuickFacts Rock Falls Illinois Land area in square miles, 2010 3.66 55,518.93 Persons per square mile, 2010 2,535.2 231.1 FIPS Code 64928 17 Counties Whiteside County (a) Includes persons reporting only one race. (b) Hispanics may be of any race, so also are included in applicable race categories. FN: Footnote on this item for this area in place of data NA: Not available D: Suppressed to avoid disclosure of confidential information X: Not applicable S: Suppressed; does not meet publication standards Z: Value greater than zero but less than half unit of measure shown F: Fewer than 100 firms Source: US Census Bureau State & County QuickFacts