Olds is a city in Henry County, Iowa, United States. The population was 229 at the 2010 census.
Olds is located at 41°08′00″N 91°32′44″W (41.133346, -91.545595).
According to the United States Census Bureau, the city has a total area of 0.34 square miles (0.88 km2), all land.
As of the census of 2010, there were 229 people, 93 households, and 64 families living in the city. The population density was 673.5 inhabitants per square mile (260.0/km2). There were 105 housing units at an average density of 308.8 per square mile (119.2/km2). The racial makeup of the city was 96.1% White, 0.4% African American, 1.7% Native American, 1.3% from other races, and 0.4% from two or more races. Hispanic or Latino of any race were 1.3% of the population.
There were 93 households, of which 35.5% had children under the age of 18 living with them, 51.6% were married couples living together, 11.8% had a female householder with no husband present, 5.4% had a male householder with no wife present, and 31.2% were non-families. 28.0% of all households were made up of individuals, and 5.4% had someone living alone who was 65 years of age or older. The average household size was 2.46 and the average family size was 2.92.