Struble is located in Elgin Township, some seven miles north of LeMars, at . According to the United States Census Bureau, the city has a total area of, all land. There is one main street running east–west with commercial buildings, now vacant. At the west end of Main Street is one active church and a cemetery. Just to the east of town a BNSF Railway line runs north–south. Most of Struble consists of well-kept private homes. Beyond are cultivated fields on gently rolling farmland.
As of the census of 2010, there were 78 people, 33 households, and 20 families living in the city. The population density was. There were 35 housing units at an average density of. The racial makeup of the city was 84.6% White, 10.3% from other races, and 5.1% from two or more races. Hispanic or Latino of any race were 14.1% of the population. There were 33 households of which 30.3% had children under the age of 18 living with them, 48.5% were married couplesliving together, 6.1% had a female householder with no husband present, 6.1% had a male householder with no wife present, and 39.4% were non-families. 39.4% of all households were made up of individuals and 15.2% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 3.15. The median age in the city was 41 years. 26.9% of residents were under the age of 18; 6.4% were between the ages of 18 and 24; 19.1% were from 25 to 44; 36% were from 45 to 64; and 11.5% were 65 years of age or older. The gender makeup of the city was 51.3% male and 48.7% female.
2000 census
As of the census of 2000, there were 85 people, 33 households, and 20 families living in the city. The population density was 546.2 people per square mile. There were 35 housing units at an average density of 224.9 per square mile. The racial makeup of the city was 92.94% White, 1.18% from other races, and 5.88% from two or more races. Hispanic or Latino of any race were 7.06% of the population. There were 33 households out of which 39.4% had children under the age of 18 living with them, 51.5% were married couples living together, 6.1% had a female householder with no husband present, and 36.4% were non-families. 36.4% of all households were made up of individuals and 6.1% had someone living alone who was 65 years of age or older. The average household size was 2.58 and the average family size was 3.48. In the city, the population was spread out with 36.5% under the age of 18, 1.2% from 18 to 24, 36.5% from 25 to 44, 15.3% from 45 to 64, and 10.6% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 129.7 males. For every 100 females age 18 and over, there were 107.7 males. The median income for a household in the city was $37,813, and the median income for a family was $45,833. Males had a median income of $26,875 versus $21,042 for females. The per capita income for the city was $16,423. None of the population and none of the families were below the poverty line.
Brigadier General John W. Nicholson, USA. General Nicholson was appointed secretary of American Battle Monuments Commission by President George W. Bush in January 2005.
Isaac S. Struble, Congressman for whom Struble, Iowa is named. Struble lived in nearby LeMars until his death in 1913.
