Arifiye
Arifiye is a municipality and district of Sakarya Province, Turkey. Its area is 75 km2, and its population is 49,340 (2022). It covers the southernmost part of the agglomeration of Adapazarı and the adjacent countryside. Geography 
Arifiye is situated just at the east of Lake Sapanca. It is almost merged to Adapazarı the center of the province and it is a part of Greater Sakarya. (see Metropolitan centers in Turkey). Arifiye is on Turkish Motorway O-4 and state highway D.100 both of which connect İstanbul to Ankara. It is also an important railway junction. History 
Arifiye is a part of ancient region of Bithynia. It later on fell to Roman Empire and Byzantine Empire. Several times it was plundered by the Sassanid Persians, Umayyad Arabs and Russians in the Middle Ages. After a brief occupation by the Seljuk Turks it was returned to Byzantines during the First Crusade. In 1326 Ottoman Turks annexed Arifiye. Although an important stop on Silk road in the Middle Ages because of frequent floods of the nearby Lake Sapanca it was not a populous settlement. During Turkish Republic  its population increased and by 1956 it was declared a seat of township. In 2008 the district Arifiye was created from part of the former central district of Adapazarı/Sakarya Province, along with the districts Adapazarı, Erenler and Serdivan. Economy 
Formerly the major economic sector in Arifiye was agriculture. But after the 1970s Arifiye became an important center of Automotive sub industry. Toyota is making the new C-HR here. The bus terminal of Greater Sakarya is also in Arifiye. The Arifiye railway station is served by high speed trains between Istanbul and Ankara, and by the commuter service between Gebze and Adapazarı. It was the westernmost terminal of the Adana-Istanbul railway from February 2012 to 2015, while construction took place in Istanbul's Haydarpaşa train station. Composition
There are 24 neighbourhoods in Arifiye District:

 Adliye
 Ahmediye
 Arifbey
 Aşağı Kirazca
 Boğazköy
 Çaybaşıfuadiye
 Çınardibi
 Cumhuriyet
 Fatih
 Hacıköy
 Hanlı Merkez
 Hanlı Sakarya
 Hanlıköy
 Karaaptiler
 Karaçomaklar
 Kemaliye
 Kirazca
 Kışlaçay
 Kumbaşı
 Mollaköy
 Neviye
 Semerciler
 Türkçaybaşı
 Yukarıkirazca

References

 
Populated places in Sakarya Province
Districts of Sakarya Province
Metropolitan district municipalities in Turkey