1 Introduction  
2 Literature Review  
2.1 Disasters and Demography  
2.2 Facebook’s Gender-Stratified Displacement Map  
2.3 Facebook for Demographic Surveys  
3 Australia Bushfires, 2019-2020  
4 Research Hypotheses  
5 Data and Methods  
5.1 Survey Population  
5.2 Sample Design  
5.3 Sample Weights for Non-Response Bias  
6 Survey Descriptive Statistics  
7 Results and Analysis  
7.1 Results on Evacuation and Return  
8 Discussion  
8.1 Implications  
8.2 Limitations  
8.3 Conclusion