An inventory of 69 open data standards — what they cover, who publishes them, and how they measure up.
Pick a category to see the standards that apply to it.
Annual Budget Municipal budgets that plan for expenditure
Building Permits Municipal permits for construction
Crime Statistics Municipal crime data, such as police responses
Election Results Municipal major election results by constituency/district
Expenditure Municipal records of past spendings
Public Facilities Municipal public amenities, such as schools or parks and their locations
Real-Time Transit Transit services' real-time information, such as a bus's live location
Road Construction Municipal current and planned road construction
Service Requests Non-emergency service requests, such as graffiti removal
Zoning Municipal specifications on what development is allowed on a parcel of landA data standard is an agreed way of describing and structuring data so it can be shared, compared, and reused across organizations. An open standard is published under a license that lets anyone adopt it freely. Standards can be schematic, semantic, or atomic — the glossary breaks down what that means.
Learn about open data standardsWhen cities publish transit data in the same format (GTFS), a single trip-planning app can work in hundreds of places. Shared standards turn isolated datasets into an ecosystem — and this directory helps you find the right one and judge its maturity.
Learn about the project