Karahallı is a town in Uşak Province in the inner Aegean region of Turkey. It is the seat of Karahallı District. Its population is 5,672 (2022). Karahallı is at a distance of 62 km (39 mi) from the province center of Uşak lying to its north.
The name of the town makes reference to its founder, the 14th century Turkmen bey Kara Halil. The township was made into a district in 1953, simultaneous to the separation of Uşak Province from Kütahya Province, and Uşak's becoming a province seat.
Çivril (Turkish: [ˈtʃivɾil]) is a municipality and district of Denizli Province, Turkey. Its area is 1,570 km, and its population is 59,967 (2022). Çivril district area neighbors those of two districts of Uşak Province to its north, namely Sivaslı and Karahallı, and four districts of Afyonkarahisar Province from the north-east to the south which are, clockwise, Sandıklı, Dinar, Dazkırı and Dazkırı, and to its south-west, three districts of the same province as itself depending Denizli. These last three are Bekilli, Çal and Baklan.
It is the third-most populated district of the province after Merkezefendi and Pamukkale and is situated on a plain to the northeast of the city of Denizli, being actually closer to the neighboring provincial seat of Uşak.