A count of a particular population segment that occurs outside of the regular census schedule.

विशेष जनगणना

English Usage: The city held a special census to capture data on the growing immigrant population.

Hindi Usage: शहर ने बढ़ते प्रवासी जनसंख्या के डेटा को कैद करने के लिए विशेष जनगणना की।