Ensign is a city in Gray County, Kansas, United States. The population was 203 at the 2000 census.
Ensign is located at 37°39′9″N 100°13′58″W / 37.6525°N 100.23278°W / 37.6525; -100.23278 (37.652608, -100.232657). According to the United States Census Bureau, the city has a total area of 0.3 square miles (0.7 km²), all of it land.
As of the census of 2000, there were 203 people, 72 households, and 55 families residing in the city. The population density was 727.1 people per square mile (279.9/km²). There were 77 housing units at an average density of 275.8 per square mile (106.2/km²). The racial makeup of the city was 90.64% White, 0.99% Asian, 6.90% from other races, and 1.48% from two or more races. Hispanic or Latino of any race were 21.18% of the population.