Truesdale is a city in Buena Vista County, Iowa, United States. The population was 81 at the 2010 census.GeographyTruesdale is located at .According to the United States Census Bureau, the city has a total area of 0.14sqmi, all of it land.Demographics2010 censusAs of the census of 2010, there were 81 people, 37 households, and 24 families residing in the city. The population density was 578.6PD/sqmi. There were 40 housing units at an average density of 285.7/sqmi. The racial makeup of the city was 98.8% White and 1.2% African American. Hispanic or Latino of any race were 1.2% of the population.There were 37 households of which 29.7% had children under the age of 18 living with them, 48.6% were married couples living together, 8.1% had a female householder with no husband present, 8.1% had a male householder with no wife present, and 35.1% were non-families. 29.7% of all households were made up of individuals and 10.8% had someone living alone who was 65 years of age or older. The average household size was 2.19 and the average family size was 2.71.The median age in the city was 47.8 years. 18.5% of residents were under the age of 18; 4.9% were between the ages of 18 and 24; 19.7% were from 25 to 44; 42% were from 45 to 64; and 14.8% were 65 years of age or older. The gender makeup of the city was 56.8% male and 43.2% female.