It shares borders with the Hungarian counties Pest, Nógrád, Borsod-Abaúj-Zemplén and Jász-Nagykun-Szolnok.

Heves county is a geographically diverse area; its northern part is mountainous (the Mátra and Bükk are the two highest mountain ranges in Hungary), while at south it includes a part of the Great Hungarian Plain.

The county was a primary target for the Ottoman Empire during the Ottoman-Hungarian Wars where the Siege of Eger took place.

43,000 persons in Heves County did not declare their ethnic group at the 2011 census.

(ordered by population, as of 2011 census) Heves County has a partnership relationship with:[10][11]