How come there are no Jews in the Jewish Autonomous Prefecture in the Russian Far East?

According to statistics in 2003, the population of Utah Autonomous Prefecture was 189, 100.

In the ethnic composition of the Jewish Autonomous Prefecture, Russians account for 83.2%, Jews for 4.2%, Ukrainians for 7.4%, Belarusians for 1%, Tatars for 0.7% and other ethnic groups for 3.5%.

There used to be quite a few Jews.

After World War II, Stalin forcibly placed Jews from the former Soviet Union here and established a Jewish autonomous republic. 1949, at the request of the Soviet Union, China forcibly "repatriated" tens of thousands of Jews who fled from Russia to the northeast of China and settled in Harbin and other places to the Soviet Union. These people were screened by the Soviet Union after returning to China and thought there were problems, and the rest were placed in this Jewish autonomous country.

1987, after the Soviet Union established diplomatic relations with Israel and allowed Soviet Jews to immigrate to Israel, all Jewish families who originally lived there, including this one, moved to Israel. At present, Russian Jews are the largest returned ethnic group in Israel, with a population of nearly one million. They have Russian radio stations, newspapers and magazines, and Russian TV stations. Russian is also the fourth largest language in Israel after Hebrew, Yiddish and English.