Government Websites: use a Google domain search (e.g. site:.gov) to limit results to government sources, which are an abundant source for data.
Country Websites: for international data search country specific websites using a Google domain search (e.g. site:.gov.uk).
Professional Organizations, Non-profits, or Research Groups: often these types of groups have a special interest in gathering and sharing data. Try adding terms to your search like "association", "profession", "advocacy", "non-profit", or "research".
Articles: look for where articles or reports on your topic obtained data. Is the data is available for free or purchase, or would it need to be collected on your own?
Check out lists of websites and data sources for specific subjects related to your research question at state, national, and global levels.
Search features: many data repositories have large numbers of datasets and usually include options to find what you are looking for such as a search bar, data finder/locator, or catalog.
Download buttons and wording: look for tabs, headings, and buttons that indicate you can download or export the data to work with and analyze on your own
Format options: make sure that data is in a format compatible with your preferred analysis program. CSV is a good general format that can be imported into many applications.
Documentation and Codebooks: most data sites will include information about how the data was collected and what each variable means. This information is valuable in making accurate choices and conclusions as you clean and analyze data