What is another word for district?

The best substitute for "district" depends on the context. Here are some options, with varying degrees of formality and specificity:

General:

* Area

* Region

* Zone

* Locality

* Neighborhood (for smaller, more residential areas)

More specific:

* Ward (a political division)

* Precinct (a police or voting area)

* Sector (often used for business or industry)

* Circuit (a judicial area)

* Jurisdiction (a legal area)

Informal:

* Patch

* Stomping grounds

* Hood (slang, for neighborhood)

Other:

* Division

* Subdivision

* Territory

* Province (for larger areas)

To get the most suitable replacement, please provide more context about what you're describing.