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City of Filer, ID Community Profile (PDF)
Filer, Idaho is located in central southern Idaho on the west side of Twin Falls County. Filer has a population just under two thousand. Filer is a small community best known for the home of Twin Falls County Fair, which is one of the biggest fairs in the North West United States. Filer is a quiet community with a rural atmosphere that gives you a home town feel and where everybody’s your neighbor.
Named in honor of Walter G. Filer who served as general manager of the Twin Falls Water and Land Company, the town of Filer was established in 1906 as the terminus of the Oregon Short Line branch of Twin Falls, Idaho. Walter Filer was a mining engineer and surveyor from Sharon, Pennsylvania who supervised the construction of the diversion dam of the Snake River at Milner. Since 1916, the City of Filer has been the home of the Twin Falls County Fair and Rodeo (Magic Valley Stampede). The growth and development of the Filer community was a integral part of the successful south side irrigation project envisioned by men such as I.B. Perrine and Walter G. Filer.