Arinos is located east of the Federal District on the Urucuia River, a major tributary of the São Francisco.

Neighboring municipalities are: Arinos has poor highway connections leading east to the Sao Francisco river and to the state capital of Belo Horizonte, but a better road leading west to the national capital of Brasília.

There is a fully paved road (BR-479) leading west to Cabeceiras to join the important BR-020, 22 kilometers east of Formosa.

The economy is based on cattle raising and agriculture, especially the cultivation of soybeans, sorghum, and corn.

Main agricultural crops in 2006) Livestock raising in 2006 Farm data in 2006 Part of the municipality of Arinos is inside the Grande Sertão Veredas National Park, which lies to the north on an unpaved highway between Arinos and Formosa.