# PostGIS — PostgreSQL extension compatibility with PostgreSQL major versions

For PostGIS, supported postgresql versions is PostgreSQL versions 12 - 18; oldest postgresql version supported is 12; newest postgresql version supported is 18; extension version this applies to is PostGIS 3.5.8dev, recorded from its source on 2026-08-31; source re-checked 2026-09-14.

- **Extension:** PostGIS _(our reading, not quoted from the source)_
- **Supported PostgreSQL versions:** PostgreSQL versions 12 - 18 _(verified: appears in the quote below)_
- **Oldest PostgreSQL version supported:** 12 _(our reading, not quoted from the source)_
- **Newest PostgreSQL version supported:** 18 _(our reading, not quoted from the source)_
- **Extension version this applies to:** PostGIS 3.5.8dev _(verified: appears in the quote below)_

## What the source says

> The PostGIS module is an extension to the PostgreSQL backend server. As such, PostGIS 3.5.8dev requires full PostgreSQL server headers access in order to compile. It can be built against PostgreSQL versions 12 - 18. Earlier versions of PostgreSQL are not supported.

## Source

- https://www.postgis.net/docs/manual-3.5/postgis_installation.html

Last verified: 2026-09-14. Review by: 2026-12-29.
Part of [PostgreSQL extension compatibility with PostgreSQL major versions](https://referencesource.org/postgres-extension-postgresql-version-compatibility/).