Magnolia is a city in Harrison County, Iowa in the United States of America. The population was 183 at the 2010 census.
Harrison County was established in 1851 and organized on March 7, 1853. Abram Fletcher, Charles Wolcott and A. D. Jones were appointed by the Iowa General Assembly as Commissioners to organize the county and establish a county seat. They chose the location for Magnolia and gave it its name. The third building that was erected in the town for the county courthouse in 1873 was listed on the National Register of Historic Places.. The building was demolished in 2019 due to extreme disrepair and the lack of funds to maintain it.
The county seat was transferred to Logan from Magnolia in 1875.
Magnolia is located at 41°41′40″N 95°52′25″W (41.694404, -95.873516).
According to the United States Census Bureau, the city has a total area of 0.57 square miles (1.48 km2), all of it land.
As of the census of 2010, there were 183 people, 79 households, and 50 families living in the city. The population density was 321.1 inhabitants per square mile (124.0/km2). There were 87 housing units at an average density of 152.6 per square mile (58.9/km2). The racial makeup of the city was 100.0% White.