Lost River is located in Custer County, ID. The population is 19, making Lost River the 4th largest city in Custer County.
There are 0 public schools in Lost River with an average Homefacts rating of NA. , and there are 0 registered sex offenders residing in the city. Unemployment in Lost River is low and the median home sales price is $0. Detailed and up-to-date Lost River property reports are available for any property address.