Beattie is a city in Marshall County, Kansas, United States. As of the 2010 census, the city population was 200. The city has been called "The Milo Capital of the World" and hosts the annual "Beattie Milo Festival".
Beattie is located at 39°51′42″N 96°25′9″W / 39.86167°N 96.41917°W / 39.86167; -96.41917 (39.861736, -96.419091). According to the United States Census Bureau, the city has a total area of 0.2 square miles (0.6 km²), all of it land.
As of the census of 2000, there were 277 people, 107 households, and 63 families residing in the city. The population density was 1,210.3 people per square mile (465.0/km²). There were 115 housing units at an average density of 502.5 per square mile (193.1/km²). The racial makeup of the city was 95.67% White, 0.36% African American, 0.36% Pacific Islander, 2.89% from other races, and 0.72% from two or more races. Hispanic or Latino of any race were 3.97% of the population.