The County of Forty Mile No. 8
is a municipal district
in south eastern Alberta
It is located in Census Division 1, east of Medicine Hat. The municipal seat is in Foremost.
In 2006, the municipal district had a population of 3,168 in 947 dwellings, a 1.9% decrease from 1996. On a surface of 7,215.27km² it had a density of 0.4 inhabitants/km².
In 2006, Forty Mile County No. 8 had a population of 3,414 living in 945 dwellings, a 0.5% decrease from 2001. The county has a land area of and a population density of .
The following communities are located in this municipal district: