El Dorado is a city located in Union County, Arkansas, USA. As of the 2000 census, the city had a total population of 21,530. The city is the county seat of Union County, and home to the headquarters of Murphy Oil Corporation and Deltic Timber Corporation. El Dorado is also the site of a mayhaw... (More Info and Source) El Dorado Real Estate
Clean Harbors - El Dorado, Arkansas
Delek US Holdings, Inc.