Gruver is a city in Emmet County, Iowa, United States. The population was 63 at the time of the 2020 census. Gruver was laid out in 1899. The t…Gruver is a city in Emmet County, Iowa, United States. The population was 63 at the time of the 2020 census. Gruver was laid out in 1899. The town was called Luzon until 1900, when it the name was changed to Gruver.