Szolnok County was a county in the Kingdom of Hungary between the 11th century and 1426. It was made up of two disconnected parts, one in what later became Transylvania and the Partium, the other around the Tisza centred on the settlement of Szolnok. The county was eventually split and became:Belső-Szolnok in what became the Principality of Transylvania, which was merged into Szolnok-Doboka County in 1876. Közép-Szolnok in what became the Partium, which was merged into Szilágy County in 1876. Külső-Szolnok in central Hungary, which de facto merged with Heves County in 1569 due to the Ottoman occupation of Külső-Szolnok. Heves was also occupied in 1596, with both becoming part of Eğri Eyalet until their reconquest by the Habsburgs in 1687. The two counties merged de jure in 1765 to become Heves and Külső-Szolnok County.