Crawfordsville is a city in Washington County, Iowa, United States.

[6] According to the United States Census Bureau, the city has a total area of 0.35 square miles (0.91 km2), all of it land.

There were 115 housing units at an average density of 313.0 per square mile (120.8/km2).

At the 2010 census there were 264 people in 110 households, including 76 families, in the city.

There were 120 housing units at an average density of 342.9 per square mile (132.4/km2).

At the 2000 census there were 295 people in 117 households, including 78 families, in the city.

There were 122 housing units at an average density of 332.1 per square mile (128.2/km2).

The racial makup of the city was 99.66% White and 0.34% Native American.

None of the families and 2.0% of the population were living below the poverty line, including no under eighteens and 6.1% of those over 64.