
The US Census counts every resident in the United States and is mandated by Article I, Section 2 of the US Constitution. The census takes place every 10 years, with the first census after the American Revolution taking place in 1790. The census is the basis for redistricting, or the redrawing of congressional and state legislative district boundaries to account for population shifts. The US Constitution mandates that an apportionment of representatives among the states must be carried out every 10 years, making this the original legal purpose of the decennial census. While the census has been a subject of controversy, with questions arising over its accuracy and the inclusion of certain inquiries, it remains a critical tool for understanding and planning for the country's changing needs and interests.
| Characteristics | Values |
|---|---|
| Frequency | Every 10 years |
| Purpose | To count every resident in the United States and apportion representatives among the states |
| Constitutional Basis | Article I, Section 2 of the United States Constitution |
| Legal Authority | The United States Census Bureau |
| History | Censuses were conducted in the early 17th century in British colonies that became the United States; the first post-revolution census was in 1790 |
| Challenges | Inaccuracy, exclusion of certain groups (e.g. undocumented immigrants), political interference |
| Impact | Redistricting, distribution of federal funds, planning and statistics |
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What You'll Learn

The census is mandated by Article I, Section 2 of the US Constitution
The US Constitution, specifically Article I, Section 2, empowers the Congress to carry out a census in "such [a] manner as they shall by Law direct". This constitutional mandate marked a turning point in world history, as it shifted the purpose of a census from a tool of government to a tool of political empowerment for the governed.
Article I, Section 2 of the US Constitution specifies that a count of the entire population is to be undertaken for the purpose of legislative representation. This is known as the Enumeration Clause, which serves as the basis for apportioning political representation among the states. The clause requires an actual enumeration for the apportionment of House seats, ensuring that each state's share of representation is determined by its total population.
The first census after the American Revolution was conducted in 1790, and there have been 24 federal censuses since. The US Census Bureau is responsible for conducting the census, which takes place every 10 years as mandated by the Constitution. The census includes territories of the United States and aims to count every person living in the country.
The results of the census have significant implications for representation in Congress and the distribution of federal resources. The accuracy of the census is crucial, as an undercount can lead to certain states receiving smaller shares of federal funding. The Enumeration Clause prioritises "distributive accuracy" over "numerical accuracy", acknowledging the inherent challenges in achieving a perfectly accurate count.
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It takes place every 10 years
The US Census counts every resident in the United States. It is mandated by Article I, Section 2 of the Constitution and takes place every 10 years. The census has been conducted 24 times since 1790, with the most recent census taking place in 2020. The next census is scheduled for 2030.
The US Constitution mandates that an apportionment of representatives among the states must be carried out every 10 years. This is the original legal purpose of the decennial census, as intended by the Founding Fathers. The number of seats in the House has grown with the country, with Congress setting the number in law and increasing it to 435 in 1913.
The census is also used to collect data on the characteristics of individuals, households, and housing units throughout the country. This data is essential for planning and understanding the country's needs and interests, which have become more complicated over time. For example, in 1810, the first inquiry on manufactures, quantity, and value of products occurred, while in 1850, the census included inquiries on social issues such as taxation, churches, pauperism, and crime.
The COVID-19 pandemic made the collection of census results challenging, and the department had to extend the deadline for completion. Despite these challenges, the census is an important tool for political empowerment and ensuring equal representation in government.
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The census is used for reapportionment of representatives in the House
The census is a count of every resident in the United States, and it is mandated by Article I, Section 2 of the US Constitution. The US Census Bureau is responsible for conducting the census, which takes place every 10 years. The census is used for reapportionment of representatives in the House.
The US Constitution mandates that an apportionment of representatives among the states must be carried out every 10 years. This apportionment is based on the census count, with states allocated seats in the House of Representatives in proportion to their population. The number of seats in the House has grown over time, with Congress setting the number in law and increasing it to 435 in 1913.
The census is also used for redistricting, which is the process of redrawing the boundaries of congressional and state legislative districts to account for population shifts since the last census. An accurate census is important to ensure that all communities receive their fair share of federal funding, which is distributed based on census data.
The inclusion of all individuals in the census, regardless of immigration status, is a matter of controversy. While some have argued for the exclusion of non-citizens from census apportionment counts, this would be unconstitutional and violate the principle of equal representation. The Supreme Court has ruled that "distributive accuracy" is more important than "numerical accuracy," emphasizing the need for a census that reflects the total population of each state.
The census has evolved over time to meet the changing needs and interests of the country. In addition to the count of residents, the census also collects data on various social and economic aspects, such as taxation, churches, pauperism, crime, manufactures, and fisheries. This information is used for research, business decisions, and policy advocacy, further emphasizing the importance of an accurate and comprehensive census.
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Redistricting is done after each census to account for population shifts
The US Census counts every resident in the United States. It is mandated by Article I, Section 2 of the US Constitution, which states:
> Representatives and direct Taxes shall be apportioned among the several States... according to their respective Numbers... . The actual Enumeration shall be made within three years after the first meeting of the Congress of the United States, and within every subsequent Term of ten Years.
Section 2 of the Fourteenth Amendment amended Article I, Section 2 to include that the "respective Numbers" of the "several States" will be determined by "counting the whole number of persons in each State, excluding Indians not taxed." The US Census takes place every 10 years and has been conducted 24 times since 1790.
As the country's population has grown, it has not done so equally, with some towns and counties growing much faster than others. Redistricting is the process of changing the districts that determine who represents the people living there. Every member of the US House of Representatives, most state legislators, and many local legislators in towns and counties are elected from districts. These districts divide states and the people who live there into geographical territories. When district boundaries are periodically readjusted to account for new population information, the process is known as redistricting. This is required by the US Constitution, which demands roughly equal populations for each legislative district.
The division of seats in the House of Representatives after the 2020 census, for example, reflected shifts in population from state to state. This, in turn, affected the population totals on which the redistricting of seats was done for the House, state legislatures, and some multi-member governing bodies at the local level.
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The census has been conducted since 1790
The census has been conducted in the United States since 1790, with the first census after the American Revolution taking place in that year under Secretary of State Thomas Jefferson. This census was a turning point in world history, as it marked the first time that a country legally required a "regular periodical enumeration of its inhabitants".
The US Constitution, in Article 1, Section 2, mandates that an apportionment of representatives among the states must be carried out every 10 years. This is the original legal purpose of the decennial census, as the number of seats in the House has grown with the country. The Constitution states: "Representatives and direct taxes shall be apportioned among the several states which may be included within this union, according to their respective numbers". This means that the census counts every resident in the United States, including those who are not citizens.
The Enumeration Clause of Article I, Section 2, states that the "respective numbers" of the "several states" will be determined by "counting the whole number of persons in each State, excluding Indians not taxed". This clause has been interpreted by the Supreme Court to mean that "distributive accuracy" is more important than "numerical accuracy". In other words, it is more important to ensure that each state has a representative in the government, with each state's share determined by its total population, than it is to have a perfectly accurate count of every individual.
The census has evolved over time to meet the changing needs and interests of the country. For example, in 1810, the first inquiry on manufactures, quantity, and value of products occurred; in 1840, inquiries on fisheries were added; and in 1850, the census included inquiries on social issues such as taxation, churches, pauperism, and crime. Today, the census includes territories of the United States and is conducted by the United States Census Bureau, which is part of the United States Department of Commerce.
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Frequently asked questions
The U.S. Constitution mandates that an apportionment of representatives among the states must be carried out every 10 years. This is enshrined in Article I, Section 2, which states: "Representatives and direct Taxes shall be apportioned among the several States... according to their respective Numbers... The actual Enumeration shall be made within three years after the first meeting of the Congress of the United States, and within every subsequent Term of ten Years".
The census is used to gather data on the characteristics of individuals, households, and housing units throughout the country. This data is used for planning and to inform policy decisions, business choices, and academic research.
Censuses were taken prior to the Constitution's ratification, with the first "actual enumeration" conducted separately in each state between 1781 and 1786. The first census after the American Revolution was in 1790. There have been 24 federal censuses since then, with the most recent in 2020.
There are ongoing debates about the inclusion of noncitizens in the census and the potential addition of a citizenship question. Some argue that excluding noncitizens would violate the principle of equal representation, while others claim that including them leads to inaccurate counts. The Supreme Court has ruled that "distributive accuracy" is more important than "numerical accuracy", emphasizing the need for fair representation.

























