The 2011 Romanian census was a census held in Romania between 20 and 31 October 2011. It was performed by some 120,000 census takers in around 101,000 statistic sectors throughout the country established by the National Institute of Statistics (INS) of Romania. Preparations started already in 2009, and it was announced that the process would not end until 2014. Anyone who did not answer questions in the census questionnaire would be fined between 1,500 and 4,500 Romanian lei, although 4 of the 100 questions related to the respondent's ethnicity, mother language, religion and possible disabilities were not mandatory.