Introduction : Data and difference -- Part I. Collecting queer data -- 1. Gaps and absences : a history of queer data -- 2. Moving targets : queer collection methods -- 3. Queer the census : sex, sexual orientation and trans questions in Scotland's census -- 4. Beyond borders : queer data around the world -- Part II. Analysing queer data -- 5. Straightwashing : the cleaning and analysis of queer data -- 6. Queer validation -- data practices and the recognition of LGBTQ identity claims -- Part III. Using queer data -- 7. Loud voices : communicating queer data in online spaces -- 8. Fight back! Using queery data for action -- Conclusion: Who counts?