The population density of Beijing is about 850 people per square kilometer.

城市的人口密度大约为每平方公里850人。

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By 2031, the ONS forecasts, England will have 464 people per square kilometer.

ONS预计，到2031年，英国的人口密度将达到每平方公里464人。

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With a total population density of over 6300 people per square kilometer, it ranks 2nd in the world.

它的人口每平方公里超过6300人，在世界上排名第二。

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Luo says there were 72 people per square kilometer in his native district near the Russian border.

FORBES: Issues & Ideas

Southern Khabarovsk has the same climate as Heilongjiang but only 1.2 people per square kilometer, meaning the region could support tens of millions--if not more--of Chinese, he argues.

FORBES: Issues & Ideas