That most likely originated from the Hungarian huny verb meaning 'to close' or 'to die', but may also come from wear the name of the Huns, who were headquartered near for a time and were the first to establish solid rule over the land since the Dacians.

Mainly, the relief is made up of mountains, divided by the Mureș River valley which crosses the county from East to West.

In the South side along the Jiu River with its two branches Jiul de Vest and Jiul de Est, there is a large depression, and an accessible route towards Southern Romania - Oltenia.. Hunedoara County was one of the most industrialised areas during the communist period, and was very negatively affected when the industry collapsed after the fall of the communist regime.

Agricultural activities also take place in Hunedoara county, which include livestock raising, and fruit and cereal cultivation.

Also, following the de-industrialization after the communism fall, the major urban centres in the county, particularly Hunedoara and Petroșani, suffered significant population decline.

Subsequently, two other districts were established:According to the census data of 1930, the county's population was 332,118, of which 82.0% were Romanians, 11.3% Hungarians, 2.5% Germans, 1.5% Romanies, 1.4% Jews, as well as other minorities.

[11] In 1930, the urban population of the county was 41,234, of which 52.8% were Romanians, 30.4% Hungarians, 6.7% Germans, 6.6% Jews, 1.6% Romanies, as well as other minorities.