Etna, Minnesota Greenleafton. Nearby places in Iowa include Chester and Lime Springs. Etna is located 5 miles east of Ostrander; and 4 miles west of Cherry Grove. Forestville Mystery Cave State Park is also nearby. Etna, Minnesota Etna is an unincorporated community in Bloomfield Township, Fillmore County, Minnesota, United States. Etna is located within ZIP code 55975 based in Spring Valley. A post office previously operated in the community of Etna from 1856 to 1901. The community was named for Mount Etna, on Sicily. The community is located 8 miles southeast of Spring Valley, at the junction of Fillmore County 14 and
Etna, Wyoming Etna, Wyoming Etna is a census-designated place (CDP) in Lincoln County, Wyoming, United States. The population was 164 at the 2010 census. Etna is located at (43.031124, -111.016042). in Star Valley, a grassland valley surrounded by forested mountains. According to the United States Census Bureau, the CDP has a total area of 2.0 square miles (5.1 km²), all of it land. As of the census of 2000, there were 123 people, 44 households, and 34 families residing in the CDP. The population density was 62.8 people per square mile (24.2/km²). There were 55 housing units at an average density of