Kamrar is a city in Hamilton County, Iowa, United States.

[3] The city was named in honor of Judge J. M. Kamrar, a prominent lawyer of the vicinity, who served as an officer of the Chicago & Northwestern Railway Company.

[3] J. M. Kamrar resided in Blue Earth, Minnesota in his final years, where he was among the first citizens to own a car.

[6] According to the United States Census Bureau, the city has a total area of 0.86 square miles (2.23 km2), all land.

At the 2010 census there were 199 people in 82 households, including 45 families, in the city.

The racial makup of the city was 96.5% White, 2.0% Asian, and 1.5% from two or more races.

At the 2000 census there were 229 people in 91 households, including 66 families, in the city.

The racial makup of the city was 95.63% White, 1.31% Native American, 1.31% Asian, and 1.75% from two or more races.

About 3.0% of families and 3.1% of the population were below the poverty line, including none of those under the age of eighteen or sixty five or over.