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.
Note: You may also click here to see Quick Facts about all of the counties. County codes: South Dakota has 66 counties. However, when county coding was introduced in 1925, there were 69 counties. In 1943, Washington County became part of Shannon County, and in 1954, Armstrong County was combined with Dewey County. In 1976, Washabaugh County became part of Jackson County. From 1925 through 1975, South Dakota used numerical prefixes to indicate the county of issue. From f1925 through 1955, Minnehaha, the most populous county, was given #1, and the remaining counties were numbered in alphabetical order.