Negara-negara kota Sogdia, walaupun tidak pernah bersatu dalam pentadbiran, berpusat di bandar Samarkand. Bahasa Sogdia, satu bahasa Iran Timur, sudah tidak lagi dituturkan. Walau bagaimanapun, keturunan salah satu dialeknya, Yaghnobi, masih dituturkan oleh orang Yaghnobi di Tajikistan. Ia digunakan secara meluas di Asia Tengah sebagai lingua franca dan berfungsi sebagai salah satu bahasa istana Kekhanan Turkik Pertama untuk menulis dokumen.
Orang Sogdia juga pernah tinggal di China zaman maharaja dan memegang jawatan-jawatan tinggi dalam tentera dan kerajaan dinasti Tang China (618–907 TM). Pedagang dan diplomat Sogdia mengembara sejauh barat ke Empayar Byzantium. Mereka menjadi orang tengah dalam perdagangan Jalan Sutera. Walaupun pada mulanya mengamalkan kepercayaan Majusi, Manikheisme, Buddhisme dan, sedikit sebanyak, Kristian Gereja Timur dari Asia Barat, orang Sogdia memeluk Islam secara beransur-ansur dan keturunan mereka bermula dengan penaklukan Muslim Transoxiana pada abad ke-8. Pemelukan Islam oleh orang Sogdia Islam hampir lengkap pada akhir Empayar Samaniyah pada tahun 999, bertepatan dengan kemerosotan bahasa Sogdia apabila sebahagian besarnya digantikan oleh bahasa Parsi Baru.
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