Hauser is a city in Kootenai County, Idaho, United States. The population was 678 at the 2010 census. According to the United States Census Bureau, the city has a total area of 0.94 square miles (2.43 km2), all land. As of the census of 2010, there were 678 people, 302 households, and 190 families living in the city. The population density was 721.3 inhabitants per square mile (278.5/km2). There were 326 housing units at an average density of 346.8 per square mile (133.9/km2).