We have a very transient population here.

我们的人口流动性很大。

youdao

The transient population of the workforce was a cause of concern.

流动的劳动力人口是一个重要的原因。

youdao

There's a fairly transient population that comes and goes and people can choose to keep to themselves.

BBC: Cleveland's Seymour Avenue: Scene of a terrible crime

In contrast it may well be harder to establish a community council in parts of a large town or city with a somewhat transient population.

BBC: 'Sense of community' is crucial

It is also that a large, transient population makes the place difficult to run.

ECONOMIST: Bagehot