There are 4 US Post Offices in Gooding County serving a total of 15,263 residents equating to 3,816 residents per post office. It's estimated that approximately 24,361 packages are handled across the 4 county post offices annually. Gooding County is a county located in the U.S. state of Idaho. As of the 2010 census, the population was 15,464. Its county seat is Gooding. The county was created by the Idaho Legislature on January 28, 1913, by a partition of Lincoln County. It is named for Frank R. Gooding, an early 20th Century governor and United States Senator from Idaho."