Day County, SD
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            Day County Population: 6,267 Population Density: 6.1 per square mile Water Area Percentage: 5.74% (62.63 square miles) Land Area Percentage: 94.26% (1,028.57 square miles) Total Area: 1,091.21 square miles Housing Units: 3,618 per square mile County Links Waterfalls In Day County • Wingate Arm  | 
        
            
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				Quick Links Saylorville Lake News Saylorville Lake Photos Saylorville Lake Videos  | 
		

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