Average size of a family in the US 1960-2018

Average number of people per family in the United States from 1960 to 2018

by Erin Duffin, last edited Apr 29, 2019
Average size of a family in the US 1960-2018 This graph shows the average number of people per family in the U.S. from 1960 to 2018. The average American family in 2018 consisted of 3.14 persons.
Families in the United States

According to the U.S. Census Bureau, a family is a group of two people or more (one of whom is the householder) related by birth, marriage, or adoption and residing together; all such people (including related subfamily members) are considered as members of one family.

As of 2018, the U.S. Census Bureau counted about 83.09 million families in the United States. The average family consists of 3.14 persons in 2018, down from 3.7 in the 1960s. This is reflected in the decrease of children in family households overall. In 1970, about 56 percent of all family households had children under the age of 18 living in the household. This percentage declined to 41.4 percent in 2017.

The average size of a family household varies greatly from state to state. The largest average families can be found in Utah and Hawaii, with an average of 3.63 and 3.6 members respectively. The smallest families can be found in North Dakota and Vermont, with an average size of 2.94 and 2.93 members respectively.
Show more

Average number of people per family in the United States from 1960 to 2018

Statista Accounts: Access All Statistics. Starting from $588 / Year
Basic Account
Get to know the platform

You only have access to basic statistics.

Premium Account
Your perfect start with Statista
  • Instant access to 1m statistics
  • Download in XLS, PDF & PNG format
  • Detailed references

$49 / Month *

Corporate Account
Full access

Corporate solution including all features.

* All products require an annual contract.
   Prices do not include sales tax.
Leading companies trust Statista:
paypalgoogleadobepgsamsungtelekom
Related Studies: Available to Download in PDF or PPTX Format
Parents in the U.S.
Parents in the U.S.

All Information
in one Presentation

Parents in the U.S.

Everything On "Parents in the U.S." in One Document: Edited and Divided into Handy Chapters. Including Detailed References.

Statista is a great source of knowledge, and pretty helpful to manage the daily work.
Christof Baron

Christof Baron
CEO, MindShare Germany

Statistics on "Families in the U.S."
  • Overview
The most important statistics
  • Marriage
  • Divorce
  • Children
  • Single parents
  • Family income
Discover Statista
Need help with using Statista for your research? Tutorials and first steps
Further Content: Statistics, Studies, and Topic Pages
Learn more about how Statista can support your business.
Do you have any questions about our business solutions?

We provide you with detailed information about our Corporate Account.