| ROCK ISLAND Resident total population estimate (July 1) 2009 | 146826 |
| ROCK ISLAND Resident total population estimates base (April 1) 2000 | 149388 |
| ROCK ISLAND Resident total population estimate percent change - April 1 2000 to July 1 2009 | -1.7 |
| ROCK ISLAND Resident total population estimate net change - April 1 2000 to July 1 2009 | -2562 |
| ROCK ISLAND Resident population (April 1) 2000 (complete count) | 149374 |
| ROCK ISLAND Resident population under 5 years (July 1 - estimate) 2008 | 9653 |
| ROCK ISLAND Resident population under 5 years percent (July 1 - estimate) 2008 | 6.6 |
| ROCK ISLAND Resident population under 18 years (July 1 - estimate) 2008 | 33097 |
| ROCK ISLAND Resident population under 18 years percent (July 1 - estimate) 2008 | 22.5 |
| ROCK ISLAND Resident population 65 years and over percent (July 1 - estimate) 2008 | 15.8 |
| ROCK ISLAND Resident population 65 years and over (July 1 - estimate) 2008 | 23243 |
| ROCK ISLAND Resident population: total females percent (July 1 - estimate) 2008 | 51.1 |
| ROCK ISLAND Resident population: White alone (July 1 - estimate) 2008 | 129251 |
| ROCK ISLAND Resident population: Black alone (July 1 - estimate) 2008 | 11657 |
| ROCK ISLAND Resident population: American Indian and Alaska Native alone (July 1 - estimate) 2008 | 539 |
| ROCK ISLAND Resident population: Asian alone (July 1 - estimate) 2008 | 2954 |
| ROCK ISLAND Resident population: Native Hawaiian and Other Pacific Islander alone (July 1 - estimate) 2008 | 59 |
| ROCK ISLAND Resident population: Two or more races (July 1 - estimate) 2008 | 2426 |
| ROCK ISLAND Resident population: Hispanic or Latino Origin (July 1 - estimate) 2008 | 15450 |
| ROCK ISLAND Resident population: Not Hispanic White alone (July 1 - estimate) 2008 | 114786 |
| ROCK ISLAND Resident population: White alone percent (July 1 - estimate) 2008 | 88 |
| ROCK ISLAND Resident population: Black alone percent (July 1 - estimate) 2008 | 7.9 |
| ROCK ISLAND Resident population: American Indian and Alaska Native alone percent (July 1 - estimate) 2008 | 0.4 |
| ROCK ISLAND Resident population: Asian alone percent (July 1 - estimate) 2008 | 2 |
| ROCK ISLAND Resident population: Native Hawaiian and Other Pacific Islander alone percent (July 1 - estimate) 2008 | 0 |
| ROCK ISLAND Resident population: Two or more races percent (July 1 - estimate) 2008 | 1.7 |
| ROCK ISLAND Resident population: Hispanic or Latino Origin percent (July 1 - estimate) 2008 | 10.5 |
| ROCK ISLAND Resident population: Not Hispanic White alone percent (July 1 - estimate) 2008 | 78.1 |
| ROCK ISLAND Births 2006 | 1873 |
| ROCK ISLAND Deaths 2006 | 1402 |
| ROCK ISLAND Infant deaths under one year 2006 | 10 |
| ROCK ISLAND Population 5 years and over by residence in 1995 - percent in same house 2000 (sample) | 58.5 |
| ROCK ISLAND Percent foreign born population 2000 (sample) | 4.6 |
| ROCK ISLAND Population 5 years and over percent speaking language other than English at home 2000 (sample) | 8.4 |
| ROCK ISLAND Educational attainment - persons 25 years and over - percent high school graduate or higher 2000 | 82.6 |
| ROCK ISLAND Educational attainment - persons 25 years and over - percent bachelors degree or higher 2000 | 17.1 |
| ROCK ISLAND Civilian noninstitutionalized population 5 years and over with a disability 2000 (sample) | 24291 |
| ROCK ISLAND Average travel time to work for workers 16 years and over not working at home 2000 | 18.7 |
| ROCK ISLAND Housing unit estimates as of July 1 2008 | 65672 |
| ROCK ISLAND Housing unit estimates - net change April 1 2000 (base) to July 1 2008 | 1179 |
| ROCK ISLAND Housing unit estimates - percent change April 1 2000 (base) to July 1 2008 | 1.8 |
| ROCK ISLAND Owner-occupied housing units - percent of total occupied housing units 2000 (complete count) | 69.7 |
| ROCK ISLAND Median value of specified owner-occupied housing units 2000 (sample) | 78900 |
| ROCK ISLAND Housing units by units in structure - multiple units 2000 (sample) | 23.3 |
| ROCK ISLAND Households 2000 (complete count) | 60712 |
| ROCK ISLAND Persons per household 2000 (complete count) | 2.38 |
| ROCK ISLAND Per capita income in 1999 | 20164 |
| ROCK ISLAND Median household income 2008 | 45606 |
| ROCK ISLAND People of all ages in poverty - percent 2008 | 12 |
| ROCK ISLAND Personal income 2007 | 5183 |
| ROCK ISLAND Per capita personal income 2007 | 35228 |
| ROCK ISLAND Civilian labor force 2008 | 80596 |
| ROCK ISLAND Civilian labor force unemployment 2008 | 4620 |
| ROCK ISLAND Civilian labor force unemployment rate 2008 | 5.7 |
| ROCK ISLAND Employment in all industries (NAICS no code) 2007 | 96150 |
| ROCK ISLAND Employment in all industries net change 2000 - 2007 | -1045 |
| ROCK ISLAND Employment in government (NAICS 92) 2007 | 14638 |
| ROCK ISLAND Earnings in all industries (NAICS no code) 2007 | 5.07003e+06 |
| ROCK ISLAND Earnings in all industries (NAICS no code) average earnings per job 2007 | 52730 |
| ROCK ISLAND Private nonfarm establishments 2007 | 3479 |
| ROCK ISLAND Private nonfarm employment for pay period including March 12 2007 | 62602 |
| ROCK ISLAND Private nonfarm employment for pay period including March 12 2006 percent change 2000-2007 | -9.9 |
| ROCK ISLAND Nonemployer: total (NAICS 00) - establishments 2007 | 7192 |
| ROCK ISLAND Accommodation and Food Services: total (NAICS 72) - sales of establishments with payroll 2002 | 181074 |
| ROCK ISLAND Total number of firms 2002 | 9266 |
| ROCK ISLAND Total Black-owned firms percent 2002 | 2.5 |
| ROCK ISLAND Total American Indian-and Alaska Native-owned firms percent 2002 | 0 |
| ROCK ISLAND Total Asian-owned firms percent 2002 | 1.3 |
| ROCK ISLAND Total Hispanic-owned firms percent 2002 | 2.2 |
| ROCK ISLAND Total Native Hawaiian-and Other Pacific Islander-owned firms percent 2002 | 0 |
| ROCK ISLAND Total women-owned firms percent 2002 | 29.5 |
| ROCK ISLAND Manufacturing: total (NAICS 31-33) - value of shipments 2002 | 2.47483e+06 |
| ROCK ISLAND Wholesale trade: total (NAICS 42) - sales of establishments with payroll 2002 | 3.06071e+06 |
| ROCK ISLAND Retail trade: total (NAICS 44-45) - sales of establishments with payroll 2002 | 1.44766e+06 |
| ROCK ISLAND Retail trade: total (NAICS 44-45) - sales of establishments with payroll per capita 2002 | 9751 |
| ROCK ISLAND New private housing units authorized by building permits - total 2008 (20000-place universe) | 100 |
| ROCK ISLAND Valuation of new private housing units authorized by building permits 2008 (20000-place universe) | 17850 |
| ROCK ISLAND Land in farms (NAICS) 2007 (acres) (adjusted) | 178623 |
| ROCK ISLAND Federal Government expenditure - total FY 2008 | 1.51865e+06 |
| ROCK ISLAND Federal Government expenditure per capita FY 2008 | 10339 |
| ROCK ISLAND Land area in square miles 2000 | 426.75 |
| ROCK ISLAND Population per square mile 2000 | 350 |
