United States census

Decennial census of the United States population

Seal of the United States Census Bureau

The United States census is a decennial survey conducted by the United States Census Bureau to count the population of the United States. The census is mandated by the United States Constitution and is used to allocate seats in the United States House of Representatives, as well as to distribute federal funds and for various other purposes.

History

The first United States census was conducted in 1790, under the direction of Thomas Jefferson, who was then the Secretary of State. Since then, the census has been conducted every ten years, with the most recent census occurring in 2020.

"Taking the Census" by Francis William Edmonds

The early censuses were conducted by U.S. marshals who traveled door-to-door to collect data. Over time, the process has evolved significantly, incorporating new technologies and methodologies to improve accuracy and efficiency.

Methodology

The census aims to count every person living in the United States, regardless of citizenship or immigration status. The data collected includes demographic information such as age, sex, race, and housing status.

A card puncher used in early census data processing

In recent decades, the Census Bureau has employed a combination of mail-in questionnaires, online forms, and in-person interviews to gather data. The 2020 census was notable for being the first to offer an online response option.

Significance

The data collected by the census is crucial for political representation and the allocation of federal funds. It determines the number of seats each state receives in the House of Representatives and is used to draw congressional and state legislative districts.

Census takers in Fairbanks, Alaska, 1940

Census data also informs public policy, business decisions, and research. It helps identify trends in population growth, migration, and demographic changes.

Challenges

Conducting the census presents numerous challenges, including reaching hard-to-count populations, ensuring data accuracy, and protecting the privacy of respondents.

Flyers encouraging census participation in Brooklyn, NY, 2020

Efforts to improve participation include public awareness campaigns and partnerships with local organizations. The Census Bureau also works to address concerns about data privacy and security.

Related pages

• United States Census Bureau
• Demographics of the United States
• Apportionment (politics)
• Census in the United Kingdom