Technical questions about INTERLIS can be sent to

As a public body, we are only able to provide limited support in the sense of project assistance. You can find some answers to your questions in the FAQ or you can contact the software developers, the GIS departments of the Federal and the cantonal admininstrations or a private consulting firm in the field of geoinformation directly.


INTERLIS is a conceptual modeling language designed to ensure long-term compatibility between different systems. INTERLIS is software and system independent.

The most currently used version is INTERLIS 2, version 2.3.

INTERLIS - who is behind it?

COGIS (Coordination, Geo-Information and Services) is the guardian of the formal language INTERLIS and provides the necessary information and documents. The activities of the Federal Administration in the field of geoinformation (GI) and geoinformation systems (GIS) are also coordinated by COGIS. See

You can find our contact details here.