The census is one of the most significant undertakings by a government to understand its population. It gathers critical data that helps in making informed decisions about policies, urban planning, healthcare, education, and social welfare programs. The information derived from a census is also used for political representation, such as redrawing congressional districts based on population changes.
Censuses are typically conducted at intervals of 5 or 10 years, but some countries may perform them more frequently. In modern times, the use of technology has made the process more efficient, allowing for online submissions and digital data collection. Nevertheless, challenges remain in ensuring that all populations are accurately counted, especially in marginalized or hard-to-reach communities.