What Is the American Community Survey and Is It Required?

Yes, the American Community Survey is required by federal law. If your address is selected, every adult in the household is legally obligated to answer, and the statutory fine for refusing can reach $5,000.¹ In practice, though, the Census Bureau has never prosecuted a household for refusing to respond, and enforcement consists of repeated mailings, phone calls, and eventually a knock at the door.

The ACS reaches about 3.5 million addresses a year, drawn on a rotating random sample. Any given address has roughly a 1-in-480 chance of being picked in a given month, and the same address should not come up more than once every five years. If yours is one of them, here is what the obligation actually looks like.

The Law That Makes It Mandatory

Title 13 of the U.S. Code, Sections 141 and 193, authorizes the Census Bureau to run the survey, and Section 221 makes it an offense to refuse or neglect to answer.² Everyone 18 or older in the selected household is covered.

Section 221 itself sets modest fines: up to $100 for refusing to answer and up to $500 for knowingly giving false answers.³⁴¹

One category of question is carved out. Section 221(c) says you cannot be compelled to disclose your religious beliefs or membership in any religious organization, so even under a mandatory survey that topic is off-limits.³

What Actually Happens If You Don’t Respond

The gap between the statute and real-world enforcement is wide. The federal government has acknowledged in court proceedings that it does not intend to prosecute individuals for refusing to complete the ACS, and no household has been fined or charged for non-response.

Instead of penalties, the Bureau leans on persistence. Contact usually starts with a mailed invitation to respond online at respond.census.gov/acs. If nothing comes back, a paper questionnaire arrives. Then a reminder letter or postcard. Then a phone call, if the Bureau has a number. Only after those attempts fail does a field representative visit in person. Most selected households never reach that last stage.

Any knowledgeable adult in the home can complete the questionnaire on behalf of the household. If you’re stuck on a question, you can call the ACS help line at 1-800-354-7271 for a walk-through by phone.⁵

How to Tell the Contact Is Real

Because the survey is mandatory and asks detailed questions, scammers imitate it. A few markers separate the real thing from a fraud.

The ACS will never ask for your full Social Security number, bank account information, or passwords.¹ Any request for those is a scam. Legitimate envelopes carry a return address of “U.S. Census Bureau” or “U.S. Department of Commerce,” often from the Bureau’s mail center in Jeffersonville, Indiana, or from a regional office or headquarters in the Washington, D.C., area.⁶

A field representative should carry a government-issued ID badge showing their name, photograph, a Department of Commerce watermark, and an expiration date, along with an official bag and a Census Bureau-branded electronic device.⁷ Visits happen between 9 a.m. and 9 p.m. local time. To verify anyone at your door, look up their name in the Census Bureau’s online staff directory or call 1-800-923-8282.⁶

What the Survey Asks

Questions fall into four groups. Demographic items cover each person’s age, sex, race, and relationship to the person who owns or rents the home. Social questions cover education, marital status, veteran status, disability, citizenship, and language spoken at home.⁸

Economic questions ask about employment, occupation, industry, income, commuting, health insurance, and whether the household receives nutrition assistance. Housing questions cover the type of structure, number of rooms, home value or rent, utility costs, and year built. The 2025 questionnaire added three items on sewer service, electric vehicles, and solar panels.⁹

Your Social Security number is not among them at any point. A form that asks for it is not the ACS.¹

How Your Answers Are Protected

Confidentiality is the counterweight to the mandate, and this is where the law has real teeth. Title 13, Section 9 bars the Census Bureau from releasing any information that could identify a specific person or household. Your responses cannot be shared with other government agencies, used in court, or accessed by law enforcement, and census records are immune from legal process without your consent.¹⁰

Every Census Bureau employee takes a lifetime oath to uphold those protections. Wrongful disclosure carries up to five years in prison. Section 214 sets the statutory fine at $5,000, and 18 U.S.C. § 3571 can push it as high as $250,000 for a felony-level violation.¹¹¹ Before any data are published, responses are aggregated and run through statistical disclosure-avoidance techniques so no individual can be identified in the released tables.

Getting Help Completing It

The online questionnaire and printed materials are available in English and Spanish. The Bureau also publishes informational brochures in Arabic, Chinese, French, Haitian Creole, Korean, Polish, Portuguese, Russian, and Vietnamese.¹² The help line at 1-800-354-7271 can assist non-English speakers as well.

Respondents who are deaf or hard of hearing can reach the Bureau through the national 711 relay service. If a physical or cognitive limitation makes the survey difficult to complete on your own, another household member can answer for you, or you can request a phone-assisted or in-person interview through the help line.⁵

1
United States Census Bureau. Top Questions About the Survey
2
United States Census Bureau. The Importance of the American Community Survey and the Decennial Census
3
Office of the Law Revision Counsel. Title 13 USC 221 – Refusal or Neglect to Answer Questions; False Answers
4
Office of the Law Revision Counsel. Title 18 USC 3571 – Sentence of Fine
5
United States Census Bureau. Get Help Responding to the ACS
6
United States Census Bureau. Verify a Census Bureau Survey, Mailing, or Contact
7
United States Census Bureau. How to Identify a Census Employee
8
United States Census Bureau. Subjects Included in the Survey
9
United States Census Bureau. 2025 ACS Updates
10
Office of the Law Revision Counsel. Title 13 USC 9 – Information as Confidential; Exception
11
Office of the Law Revision Counsel. Title 13 USC 214 – Wrongful Disclosure of Information
12
United States Census Bureau. Language Brochures