open.bydata is Bavaria's open data portal for free public datasets and support for sharing data.
Aachen open data
Aachen’s open data portal lets users search datasets published by the city.

About Aachen open data
Aachen open data is the open data portal of the City of Aachen. It publishes datasets from the city administration, the StädteRegion Aachen with its member municipalities, and other institutions. Visitors can browse the datasets by subject area. The portal describes its data as open, meaning anyone may use, redistribute and reuse it for any purpose.
Personal data and other legally protected data are excluded. Technical or organizational reasons can also prevent the publication of particular data. The portal states that its dataset collection will be expanded gradually. The homepage is in German.
Key features
- Browse datasets by 13 subject areas, such as population, environment and traffic
- Homepage shows the number of datasets in each subject area
- Covers data from the City of Aachen, the StädteRegion Aachen and other institutions
- Contact email and phone numbers for questions, suggestions and data errors
- Data is published under terms that allow anyone to use, redistribute and reuse it for any purpose
- Datasets are organized into named subject areas with counts shown on the homepage
- Named contact channels are listed for questions and error reports
- Personal data and other legally protected data are excluded
- Technical or organizational reasons can prevent the publication of certain data
- The homepage is in German and the dataset collection is still being expanded
Aachen open data at a glance
- Official website
- offenedaten.aachen.de
- Category
- Research & Data › Open Data in Germany
- Type
- Dataset
- Platforms
- Web
- Language
- German
- Country
- DE
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Aachen open data FAQ
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