In 2012 there were 140,000 religious Jews in Russia, while the number of ethnic Jews was significantly larger. Indeed, most ethnic Jews in Russia are not Jewish by religion, Judaism being the religion of just a minority of ethnic Jews; most of them are atheists and not religious, many are Christians, and a significant proportion of them are Buddhists. In 2012, only 13% of ethnic Jews believed in Judaism, 13% were Orthodox Christians, 4% simply Christians, 27% atheists, 25% believers but not affiliated with an organized religion, 4% Buddhists and 3% Pagans. Religious Jews were mostly concentrated in Kamchatka Krai (0.4%), Saint Petersburg (0.4%), Kursk Oblast (0.4%), Khabarovsk Krai (0.3%), Stavropol Krai (0.3%), Buryatia (0.2%), the Jewish Autonomous Oblast (0.2%), Kalmykia (0.2%) and Kabardino-Balkaria (0.2%).