the resident population of the United States more»
      
    
  | City: | Rock City | 
| State: | Illinois | 
| Area Code: | 815 | 
| Latitude: | 42.418580 | 
| Longitude: | -89.481648 | 
| Time Zone: | Eastern GMT -6 | 
| City Alias(es): | Rock Grove | 
| Population: | 944 | 
| 2000 Population: | 1,117 | 
| White Population: | 1,102 | 
| Black Population: | 1 | 
| Hispanic Population: | 8 | 
| Asian Population: | 2 | 
| Other Population: | 1 | 
| Male Population: | 552 | 
| Female Population: | 565 | 
| Median Age: | 36.30 | 
| Male Median Age: | 35.00 | 
| Female Median Age: | 36.80 | 
| Households: | 433 | 
| Average Household Size: | 2.69 | 
| Average House Value: | $87,100 | 
| Average Household Income: | $41,136 | 
| Number of Businesses: | 18 | 
| Number of Employees: | 50 | 
| Annual Payroll: | $1,194,000 | 
| Land Area: | 31.296 sq mi | 
            Rock City, IL (       0.0 miles)
             Davis, IL (       2.8 miles)
             Dakota, IL (       3.9 miles)
             Orangeville, IL (       7.8 miles)
             Ridott, IL (       8.0 miles)
             Cedarville, IL (       8.5 miles)
             Durand, IL (       9.9 miles)
             Pecatonica, IL (      10.0 miles)
             Freeport, IL (      10.1 miles)
             Winnebago, IL (      12.9 miles)