Karval is an unincorporated community in Lincoln County, Colorado, United States.

[2] The community derives its name from G. K. Kravig, a pioneer settler.

[4] A post office called Karval has been in operation since 1911.

[5] The Karval Post Office has the ZIP Code 80823.

According to the Köppen Climate Classification system, Karval has a cold semi-arid climate, abbreviated "BSk" on climate maps.