When was the county, where Shelby Airport is located, established ?
Shelby Airport Shelby Airport (IATA: SBX, ICAO: KSBX, FAA LID: SBX) is a county owned airport two miles north of Shelby, in Toole County, Montana. The National Plan of Integrated Airport Systems for 2011–2015 called it a "general aviation" airport.
Duval County, Florida Duval County is a county located in the State of Florida. As of the 2010 census, the population was 864,263, with a 2016 estimate at 926,255. Its county seat is Jacksonville, with which the Duval County government has been consolidated since 1968. Duval County was established in 1822, and is named for William Pope Duval, Governor of Florida Territory from 1822 to 1834.