| ROCK Resident total population estimate (July 1) 2009 | 1509 |
| ROCK Resident total population estimates base (April 1) 2000 | 1756 |
| ROCK Resident total population estimate percent change - April 1 2000 to July 1 2009 | -14.1 |
| ROCK Resident total population estimate net change - April 1 2000 to July 1 2009 | -247 |
| ROCK Resident population (April 1) 2000 (complete count) | 1756 |
| ROCK Resident population under 5 years (July 1 - estimate) 2008 | 85 |
| ROCK Resident population under 5 years percent (July 1 - estimate) 2008 | 5.6 |
| ROCK Resident population under 18 years (July 1 - estimate) 2008 | 269 |
| ROCK Resident population under 18 years percent (July 1 - estimate) 2008 | 17.8 |
| ROCK Resident population 65 years and over percent (July 1 - estimate) 2008 | 22.6 |
| ROCK Resident population 65 years and over (July 1 - estimate) 2008 | 341 |
| ROCK Resident population: total females percent (July 1 - estimate) 2008 | 50.8 |
| ROCK Resident population: White alone (July 1 - estimate) 2008 | 1492 |
| ROCK Resident population: Black alone (July 1 - estimate) 2008 | 0 |
| ROCK Resident population: American Indian and Alaska Native alone (July 1 - estimate) 2008 | 8 |
| ROCK Resident population: Asian alone (July 1 - estimate) 2008 | 3 |
| ROCK Resident population: Native Hawaiian and Other Pacific Islander alone (July 1 - estimate) 2008 | 0 |
| ROCK Resident population: Two or more races (July 1 - estimate) 2008 | 5 |
| ROCK Resident population: Hispanic or Latino Origin (July 1 - estimate) 2008 | 10 |
| ROCK Resident population: Not Hispanic White alone (July 1 - estimate) 2008 | 1486 |
| ROCK Resident population: White alone percent (July 1 - estimate) 2008 | 98.9 |
| ROCK Resident population: Black alone percent (July 1 - estimate) 2008 | 0 |
| ROCK Resident population: American Indian and Alaska Native alone percent (July 1 - estimate) 2008 | 0.5 |
| ROCK Resident population: Asian alone percent (July 1 - estimate) 2008 | 0.2 |
| ROCK Resident population: Native Hawaiian and Other Pacific Islander alone percent (July 1 - estimate) 2008 | 0 |
| ROCK Resident population: Two or more races percent (July 1 - estimate) 2008 | 0.3 |
| ROCK Resident population: Hispanic or Latino Origin percent (July 1 - estimate) 2008 | 0.7 |
| ROCK Resident population: Not Hispanic White alone percent (July 1 - estimate) 2008 | 98.5 |
| ROCK Births 2006 | 16 |
| ROCK Deaths 2006 | 18 |
| ROCK Infant deaths under one year 2006 | 0 |
| ROCK Population 5 years and over by residence in 1995 - percent in same house 2000 (sample) | 69 |
| ROCK Percent foreign born population 2000 (sample) | 0.3 |
| ROCK Population 5 years and over percent speaking language other than English at home 2000 (sample) | 2.8 |
| ROCK Educational attainment - persons 25 years and over - percent high school graduate or higher 2000 | 87.4 |
| ROCK Educational attainment - persons 25 years and over - percent bachelors degree or higher 2000 | 12.2 |
| ROCK Civilian noninstitutionalized population 5 years and over with a disability 2000 (sample) | 276 |
| ROCK Average travel time to work for workers 16 years and over not working at home 2000 | 15.2 |
| ROCK Housing unit estimates as of July 1 2008 | 945 |
| ROCK Housing unit estimates - net change April 1 2000 (base) to July 1 2008 | 10 |
| ROCK Housing unit estimates - percent change April 1 2000 (base) to July 1 2008 | 1.1 |
| ROCK Owner-occupied housing units - percent of total occupied housing units 2000 (complete count) | 73 |
| ROCK Median value of specified owner-occupied housing units 2000 (sample) | 37800 |
| ROCK Housing units by units in structure - multiple units 2000 (sample) | 4.2 |
| ROCK Households 2000 (complete count) | 763 |
| ROCK Persons per household 2000 (complete count) | 2.26 |
| ROCK Per capita income in 1999 | 14350 |
| ROCK Median household income 2008 | 33449 |
| ROCK People of all ages in poverty - percent 2008 | 17.6 |
| ROCK Personal income 2007 | 35 |
| ROCK Per capita personal income 2007 | 23001 |
| ROCK Civilian labor force 2008 | 839 |
| ROCK Civilian labor force unemployment 2008 | 24 |
| ROCK Civilian labor force unemployment rate 2008 | 2.9 |
| ROCK Employment in all industries (NAICS no code) 2007 | 1121 |
| ROCK Employment in all industries net change 2000 - 2007 | -51 |
| ROCK Employment in government (NAICS 92) 2007 | 218 |
| ROCK Earnings in all industries (NAICS no code) 2007 | 20293 |
| ROCK Earnings in all industries (NAICS no code) average earnings per job 2007 | 18103 |
| ROCK Private nonfarm establishments 2007 | 48 |
| ROCK Private nonfarm employment for pay period including March 12 2007 | 0 |
| ROCK Private nonfarm employment for pay period including March 12 2006 percent change 2000-2007 | 0 |
| ROCK Nonemployer: total (NAICS 00) - establishments 2007 | 183 |
| ROCK Accommodation and Food Services: total (NAICS 72) - sales of establishments with payroll 2002 | 2065 |
| ROCK Total number of firms 2002 | 221 |
| ROCK Total Black-owned firms percent 2002 | 0 |
| ROCK Total American Indian-and Alaska Native-owned firms percent 2002 | 0 |
| ROCK Total Asian-owned firms percent 2002 | 0 |
| ROCK Total Hispanic-owned firms percent 2002 | 0 |
| ROCK Total Native Hawaiian-and Other Pacific Islander-owned firms percent 2002 | 0 |
| ROCK Total women-owned firms percent 2002 | 0 |
| ROCK Manufacturing: total (NAICS 31-33) - value of shipments 2002 | 0 |
| ROCK Wholesale trade: total (NAICS 42) - sales of establishments with payroll 2002 | 66298 |
| ROCK Retail trade: total (NAICS 44-45) - sales of establishments with payroll 2002 | 0 |
| ROCK Retail trade: total (NAICS 44-45) - sales of establishments with payroll per capita 2002 | 0 |
| ROCK New private housing units authorized by building permits - total 2008 (20000-place universe) | 0 |
| ROCK Valuation of new private housing units authorized by building permits 2008 (20000-place universe) | 0 |
| ROCK Land in farms (NAICS) 2007 (acres) (adjusted) | 631940 |
| ROCK Federal Government expenditure - total FY 2008 | 14137 |
| ROCK Federal Government expenditure per capita FY 2008 | 9375 |
| ROCK Land area in square miles 2000 | 1008.46 |
| ROCK Population per square mile 2000 | 2 |
