PostGIS Pre-built distributions for various OS

CentOS

​PostgreSQL Yum Repo managed by Devrim Gunduz is the best source for binaries

PostGIS 2.0

CentOS 6 PostgreSQL 9.1 Instructions

• ​CentOS 4,5,6 PostgreSQL 9.1

Windows

PostGIS 2.1

​Experimental Builds

These are built for PostgreSQL 8.3-9.2 manually for both 32/64bit whenever any major changes

PostGIS 2.1 buildbot builds

• ​PostgreSQL 9.2 (32-bit and 64-bit)
• ​PostgreSQL 9.1 (64-bit)
• ​PostgreSQL 9.0 (64-bit)