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2020 Census: 2020 Census: The Basics

News and information concerning the upcoming 2020 Census

2020 Census: The Basics

The United States Constitution requires a count every 10 years of every person who is residing in the U.S., regardless of immigration status or citizenship. The Census Bureau's goal for the 2020 Census is to "count everyone once, only once, and in the right place." Here are the basic steps in the process:

Step One - Update the address list 

The Census Bureau maintains a list of every housing unit in the United States. A housing unit is a house, apartment, condominium, trailer, or other place where people might live. The Census bureau started updating its list for the 2020 Census in 2015, adding new houses and apartment buildings that have been built and removing houses and apartment buildings that were demolished or converted to non-residential uses since the 2010 Census.

Step 2 - Solicit responses

Beginning March 12, 2020, the Census Bureau will mail census materials to 95% of homes. (To understand how the other 5% of households are counted, see the section about rural and remote areas.) Eighty percent (80%) of those homes will receive a letter inviting them to respond to the census online using a unique code. The other 20% (where internet access may be limited) will receive the same letter plus a paper questionnaire. All households also will receive information about how to answer the census by telephone. April 1 is Census Day, although most households will receive their materials before then and may respond prior to that date.

Step 3 - Collect responses 

Respondents will submit one census form listing everyone who lives in their household. Respondents may complete the questionnaire for their household online, by using a paper questionnaire, or by phone (by calling Census Questionnaire Assistance, which will be available from mid-January to early September 2020). Some households without traditional mailing addresses will be counted by Census Bureau employees in person. 

Step 4 - Follow up 

Households will receive several reminder letters from the Census Bureau if they do not self-respond. The final mailed reminder will include a paper questionnaire. If a household does not complete the questionnaire after receiving mailed reminders, beginning in May 2020 they may receive a phone call or an in-person visit from a Census Bureau employee. Households can continue to self-respond online, using a paper questionnaire, or by phone during the follow up period. 

Step 5 - Analyze and disseminate 

The Census Bureau will release population totals and other publicly-available data beginning in early 2021. 


Frequently Asked Question

When does the 2020 Census start? 

The enumeration starts in remote Alaska on January 21, 2020, but most households will receive their census materials by U.S. mail or hand-delivery starting in mid-March. The online and telephone response options will be available starting on March 12, 2020. 

How long does it take to fill out the form? 

The Census Bureau estimates that it will take about 10 minutes to complete the census questionnaire, depending on the number of people in the household. 

Do people have to respond online?

No, households have the option to respond to the census questionnaire in one of three ways: online, by telephone, or using a paper questionnaire.

In what languages will the online form be available? 

The online form will be available in English and 12 non-English languages: Arabic, Chinese [Simplified], French, Haitian Creole, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Tagalog, and Vietnamese.

In what language will the paper form be available? 

The paper form will be available in English and bilingual English-Spanish. Spanish-only forms will be available in Puerto Rico.

In what languages will telephone assistance be available? 

Census Questionnaire Assistance will be available in English and the same 12 non-English languages referenced above, with Mandarin and Cantonese. People will also be able to use their Telecommunications Device for the Deaf (TDD) when calling. 

In what ways will responding to the census be accessible?

Language guides will be available in American Sign Language, Braille, and large print. Census Questionnaire Assistance will also be available to callers using a Telecommunications Device for the Deaf (TDD). 

Can people respond on a smartphone or a tablet?

Yes, the online form will be optimized to allow people to respond on a smartphone or tablet.

Can people respond if they have misplaced or never received the unique ID mailed or hand-delivered to their address?

Yes, people can respond online or by telephone using an option called Non-ID Response, which allows them to complete their census forms without the unique ID, as long as they provide a valid home address.

Is the online system secure?

Yes, the Census Bureau has taken significant steps to protect online responses. All information entered online is encrypted as soon as the respondent hits "submit".

Will there be a problem if multiple people respond online from the same location or IP address?

The Census Bureau will only restrict IP addresses as a security precaution. For example, they may block an IP address if its activity appears to pose a security threat. They are anticipating and planning for multiple responses from computers in places like libraries, or generated through other outreach activities, such as block parties.

Can census responses be shared with law enforcement or other government agencies?

No, Title 13 of the U.S. Code protects the confidentiality of personally identifiable information provided in census responses, including citizenship status. Federal law prohibits the Census Bureau from sharing personally identifiable information with other government agencies. Census staff take a lifetime oath to protect census responses, with severe penalties for violations. The law prohibits personally identifiable information collected by the Census Bureau from being used against respondents by any government agency or court.

What should people do if they have a question or problem?

People can call Census Questionnaire Assistance toll-free for answers to questions or to provide their household responses by phone. The phone number will be available in early 2020.

What happens if a person misses a question?

The Census Bureau strongly encourages respondents to answer every question for every person in the household, but will allow submission of incomplete questionnaires. Bureau staff may follow up on incomplete submissions.

How do I identify an official census worker in person or over the phone?

Census workers must present an ID badge that includes their photo, the U.S. Department of Commerce watermark, and an expiration date. For more information, see these additional tips from the Census Bureau for identifying census workers. To verify, people can also contact Census Questionnaire Assistance, enter the name into the Census Bureau Staff Search, or contact the Regional Office for their state.  


Census Bureau Regional Offices

Atlanta Regional Office

Serving Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, and South Carolina
(404)730-3832 or 1-800-424-6974
TDD: (404)730-3963

Chicago Regional Office

Serving Arkansas, Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, and Wisconsin
9630)288-9200 or 1-800-865-6384
TDD: (708)562-1791

Denver Regional Office

Serving Arizona, Colorado, Kansas, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas, Utah, Wyoming
(720)962-3700 or 1-800-852-6159
TDD: (303)969-6767

Los Angeles Regional Office

Serving Alaska, California, Hawaii, Idaho, Nevada, Oregon, and Washington
(818)267-1700 or 1-800-992-3530
TDD: (818)904-6249

New York Regional Office

Serving Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Puerto Rico, Rhode Island and Vermont
(212)584-3400 or 1-800-992-3530
TDD: (212)478-4793

Philadelphia Regional Office

Serving Delaware, District of Columbia, Kentucky, Maryland, Ohio, Pennsylvania, Tennessee, Virginia, and West Virginia
(215)717-1800 or 1-800-262-4236
TDD: (215)717-0894





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Greg Curtis
Fogler Library
University of Maine
Orono, ME 04469

Information contained in this subject guide was adapted from the American Library Association publication Libraries' Guide to the 2020 Census, and  

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