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Prepositions after verbs

Populate by or populate with?

Populate with is used when something fills an area. Populated by is common in passive descriptions of who lives there.

Quick answer

Which pattern is standard?

Use populate with to say what fills a place. Use populated by in passive form to identify the people or animals living there.

The game world is populated with strange creatures.
The island is populated by seabirds.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
populate + place + with + people/things

Filling a place

With introduces the people, animals, or objects that fill an area.

Writers populated the novel with memorable characters.
The garden was populated with butterflies.
2
be populated by + people/animals

Describing inhabitants

By is common in passive descriptions of who lives in a place.

The valley is populated by farming communities.
The region was populated by wolves centuries ago.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
populate with
The author populated the story with vivid characters.
Standard for filling something with contents.
populated by
The island is populated by fishermen.
Standard passive description of inhabitants.
populate in
Rare plants populate the wetlands in spring.
In here introduces a location adjunct, not a fixed verb pattern.

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Using by in active clauses for contents

With is more natural when actively filling a place.

✕ They populated the museum by robots. ✓ They populated the museum with robots.

Forgetting passive structure with by

By usually follows populated in passive descriptions.

✕ The region populate by nomads. ✓ The region is populated by nomads.

Quick practice

Choose the expression that matches the intended meaning.

1. The designer populated the game ___ fantasy creatures.
2. The coast is populated ___ small fishing villages.
3. The forests are populated ___ deer and foxes.

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Frequently asked questions

Can populated by describe animals?

Yes. It commonly describes animals living in a place.

Is populate with only for fiction?

No. It can describe real places, games, databases, and stories.

Why does by often appear with populated?

Because the phrase is usually passive: a place is populated by people or animals.

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