What should be included: 1  Installing a standard boiler (80%-85% annual fuel utilization efficiency) typically costs about $2,500-$5,000 for a gas-fired model and $3,000-$6,500 for an oil-fired unit (generally used in areas without municipal gas lines).hat should be included: 1  Installing a standard boiler (80%-85% annual fuel utilization efficiency) typically costs about $2,500-$5,000 for a gas-fired model and $3,000-$6,500 for an oil-fired unit (generally used in areas without municipal gas lines).
Brookings County, South Dakota. Brookings County is a county located in the U.S. state of South Dakota. As of the 2010 census, the population was 31,965, making it the fifth-most populous county in South Dakota. Its county seat is Brookings. The county was created in 1862 and organized in 1871.
Three Poorest U.S. Counties In South Dakota Pine Ridge, SD The latest U.S. Census shows the three most poverty-stricken counties in the nation are in South Dakota, west of the Missouri River. Ziebach, Todd and Shannon Counties are all home to Indian Reservations. Ziebach County is the poorest in the nation with just more than 50 percent of the people living in poverty. Todd and Shannon Counties are not far behind, with slightly more than 49 and 47 percent poverty, respectively.