- Number of Registered Factories and Workers Employed of Public Sector under Factories Act, 1948 in Patna District of Bihar (Upto 31st March 2021)
- Number of Registered Factories and Workers Employed of Private Sector under Factories Act, 1948 in Patna District of Bihar (Upto 31st December 2021)
- Number of Registered Factories and Workers Employed of Private Sector under Factories Act, 1948 in Bihar (Upto 31st December 2020)
- Number of Registered Factories and Workers Employed of Private Sector under Factories Act, 1948 in Patna District of Bihar (Upto 31st December 2018)
- Number of Factories, Capital Invested and Number of Persons Employed in Patna District of Bihar (2009-2010)
- Number of Factories, Capital Invested and Number of Persons Employed in Patna District of Bihar (2008-2009)
- Number of Factories, Capital Invested and Number of Persons Employed in Patna District of Bihar (As on March, 2005)