the resident population of the United States more»
      
    
  | City: | Marble Rock | 
| State: | Iowa | 
| Area Code: | 641 | 
| Latitude: | 42.965584 | 
| Longitude: | -92.878718 | 
| Time Zone: | Eastern GMT -6 | 
| City Alias(es): | Aureola Oakwood | 
| Population: | 396 | 
| 2000 Population: | 659 | 
| White Population: | 656 | 
| Hispanic Population: | 1 | 
| Asian Population: | 1 | 
| Male Population: | 343 | 
| Female Population: | 316 | 
| Median Age: | 43.60 | 
| Male Median Age: | 42.40 | 
| Female Median Age: | 45.40 | 
| Households: | 306 | 
| Average Household Size: | 2.36 | 
| Average House Value: | $47,700 | 
| Average Household Income: | $38,500 | 
| Number of Businesses: | 13 | 
| Number of Employees: | 32 | 
| Annual Payroll: | $848,000 | 
| Land Area: | 50.194 sq mi | 
| Water Area: | 0.250 sq mi | 
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