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, Maine median income of $30,057 versus $21,250 for females. The per capita income for the town was $14,633. About 13.5% of families and 18.1% of the population were below the poverty line, including 26.7% of those under age 18 and 14.9% of those age 65 or over. Etna, Maine Etna is a town in Penobscot County, Maine, United States. The population was 1,246 at the 2010 census. Etna is named for the famed Mount Etna in Italy. It was originally known as "Crosbytown" after its first proprietor, Gen. John Crosby of Hampden. Etna was incorporated as a town in 1820. Circa