Eldora is a city in Hardin County, Iowa, United States. The population was 2,732 at the 2010 census. It is the county seat of Hardin County.
Eldora was platted in 1853. It was incorporated on July 1, 1895.
The name Eldora was given to the town by a local mother in honor of her dead infant daughter. It is derived from the Spanish name for "the gilded".
Eldora is located at 42°21′37″N 93°6′5″W (42.360155, -93.101325).
According to the United States Census Bureau, the city has a total area of 4.33 square miles (11.21 km2), all land.
Designated as having a humid continental climate, this region typically has a large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters. Precipitation is relatively well distributed year-round in many areas with this climate. The Köppen Climate Classification subtype for this climate is "Dfa". (Hot Summer Continental Climate).
At the 2010 census there were 2,732 people, 1,079 households, and 671 families living in the city. The population density was 630.9 inhabitants per square mile (243.6/km2). There were 1,275 housing units at an average density of 294.5 per square mile (113.7/km2).