Nashua is a city in Chickasaw and only partly in Floyd counties in the U.S. state of Iowa. As of the 2020 census, the city's population was 1551 a decrease of 112, or 6.7%, from 1663 reported at the 2010 census. The famed Little Brown Church featured in the song "The Church in the Wildwood" is located in Nashua. History Nashua was incorporated as a city in 1869. It is named after Nashua, New Hampshire, the native town of one of its founders. Geography Nashua is located at (42.952231, -92.537944). According to the United States Census Bureau, the city has a total area of , of which is land and is water. Demographics 2010 census As of the census of 2010, there were 1,663 people, 712 households, and 456 families living in the city. The population density was . There were 787 housing units at an average density of . The racial makeup of the city was 98.6% White, 0.4% African American, 0.5% Asian, and 0.5% from two or more races. Hispanic or Latino of any race were 0.1% of the population. There were 712 households, of which 29.6% had children under the age of 18 living with them, 51.5% were married couples living together, 9.0% had a female householder with no husband present, 3.5% had a male householder with no wife present, and 36.0% were non-families. 31.5% of all households were made up of individuals, and 17.7% had someone living alone who was 65 years of age or older. The average household size was 2.34 and the average family size was 2.95. The median age in the city was 38.4 years. 26% of residents were under the age of 18; 8% were between the ages of 18 and 24; 22.6% were from 25 to 44; 23.5% were from 45 to 64; and 20% were 65 years of age or older. The gender makeup of the city was 49.1% male and 50.9% female. 2000 census As of the census of 2000, there were 1,618 people, 691 households, and 469 families living in the city. The population density was . There were 739 housing units at an average density of . The racial makeup of the city was 99.26% White, 0.06% African American, 0.06% Native American, 0.19% Asian, 0.06% from other races, and 0.37% from two or more races. Hispanic or Latino of any race were 0.31% of the population. There