Stanwood is a city in Cedar County, Iowa, United States. The population was 684 at the 2010 census.
Stanwood was platted in 1868. The first house was built in Stanwood in 1869. The city was named for H. P. Stanwood, a railroad official.
Stanwood is located at 41°53′31″N 91°9′2″W (41.891907, -91.150694).
According to the United States Census Bureau, the city has a total area of 0.72 square miles (1.86 km2), all land.
As of the census of 2010, there were 684 people, 275 households, and 192 families living in the city. The population density was 950.0 inhabitants per square mile (366.8/km2). There were 295 housing units at an average density of 409.7 per square mile (158.2/km2). The racial makeup of the city was 97.1% White, 0.3% African American, 0.6% Asian, 0.3% from other races, and 1.8% from two or more races. Hispanic or Latino of any race were 2.2% of the population.
There were 275 households, of which 34.5% had children under the age of 18 living with them, 49.1% were married couples living together, 14.2% had a female householder with no husband present, 6.5% had a male householder with no wife present, and 30.2% were non-families.