Saidpur (Syedpur) (bn:সৈয়দপুর Saiy.adpur) is a city of Nilphamari district in Rangpur Division of Bangladesh . The city becomes a very important communication hub for adjoining major district headquarters. Saidpur Airport is one of the domestic airports in Bangladesh. The Saidpur Railway Workshop, established in 1870, is the largest railway workshop in Bangladesh and was the major railway workshop for Assam-Bengal railway. The city has historically been an Urdu-speaking community with close ties to Bihar, from which many residents originate, particularly the town of Munger. Since Bangladeshi independence, Urdu has declined as the Bihari community either integrated into Bangladeshi society, adopting Bengali, or migrated to India or Pakistan.