the resident population of the United States more»
      
    
  | City: | Rock Valley | 
| State: | Iowa | 
| Area Code: | 712 | 
| Latitude: | 43.178085 | 
| Longitude: | -96.352886 | 
| Time Zone: | Eastern GMT -6 | 
| City Alias(es): | Carmel | 
| Population: | 4,747 | 
| 2000 Population: | 4,422 | 
| White Population: | 4,361 | 
| Black Population: | 5 | 
| Hispanic Population: | 50 | 
| Asian Population: | 11 | 
| Hawaiian Population: | 2 | 
| Other Population: | 26 | 
| Male Population: | 2,159 | 
| Female Population: | 2,263 | 
| Median Age: | 35.80 | 
| Male Median Age: | 34.20 | 
| Female Median Age: | 37.80 | 
| Households: | 1,691 | 
| Average Household Size: | 2.67 | 
| Average House Value: | $81,400 | 
| Average Household Income: | $40,844 | 
| Number of Businesses: | 173 | 
| Number of Employees: | 2,198 | 
| Annual Payroll: | $46,502,000 | 
| Land Area: | 112.960 sq mi | 
| Water Area: | 0.132 sq mi | 
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