His father, Nikolai Naumovich Baburin, was a teacher who came from a long line of Sibiryaks (ethnically Russian natives of Siberia), and moved to Semipalatinsk from Tara, Omsk Oblast where Sergey later spent his childhood.

His paternal grandfather, Naum Mikheevich Baburin, was a woodworker who built houses; during the Russian Civil War he expressed support for the White Army and was nearly shot by the Bolsheviks after they came to power.

Her father, Nikolai Petrovich Kulbedin (Kulbeda), came from a Belarusian family and moved to Semipalatinsk from Motol, a village in the Ivanava District of the Brest Region in search of work.

According to Baburin, some sources indicate that Nikolai belonged to a family of priests; he actively participated in the civil war fighting the Basmachi, made a political career, was arrested during the Great Purge, but was released and then died on his way home.

His wife, Anna Maksimovna Kulbedina (née Volkova), came from exiled Cossacks, and spent all her life working as a children's nurse in a hospital.

[citation needed] In the 2007 Duma election campaign, Baburin gained broad media attention by proposing a bill giving every citizen 4 million rubles (approximately 150,000 US dollars) as a means of one-time compensation for the wrongdoings of the privatization of state property in the early 90s.