Document and Entity Information
9 Months Ended
Sep. 30, 2013
Oct. 14, 2013
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2013  
Document Fiscal Year Focus 2013  
Document Fiscal Period Focus Q3  
Trading Symbol TRLA  
Entity Registrant Name TRULIA, INC.  
Entity Central Index Key 0001349454  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   37,297,030