The PostgreSQL Global Development Group is not a single company, but rather a large, distributed community of developers, users, and contributors working collaboratively on the PostgreSQL open-source relational database management system (RDBMS). There's no central "PostgreSQL Global Development Group" entity with a single address or headquarters in the USA (or anywhere else). Development and contributions to PostgreSQL occur globally, with individuals and organizations participating from various countries.

PostgreSQL's governance is community-driven. While individual contributors may be based in the USA, there's no governing body specifically located in the USA. The project relies on a volunteer-based effort, with decision-making processes distributed across the community through mailing lists, forums, and collaborative coding efforts. Companies and individuals contribute to PostgreSQL's development in various capacities, including code contributions, documentation improvements, testing, and community support. Many commercial companies offering PostgreSQL-related services and support exist throughout the world, often employing developers who actively contribute to the project.