Unexpectedly Intriguing!
February 8, 2013

Did you ever wonder how many households there were in the United States in 1925? Or maybe you just want to project how many there will be in 2015?

If so, you've come to the right place! Our latest tool takes data collected by the U.S. Census every 10 years from 1900 through 1940, and then annually beginning in 1947 to estimate the number of households there were in the U.S in a given year.

You just need to select your year of interest in the tool below and click the "Calculate" button!

Year of Interest
Input Data Values
Select Year

Number of U.S. Households
Calculated Results Values
Estimated Number of Households

Although we've modeled the number of households in the U.S. as a function of time, in reality, it would be more proper to describe it as being a function of population, demographics and income. Time simply works as a catchall for these factors.

In building the tool however, we realized that there are two distinct periods in U.S. history where the number of households is concerned: the period up to and including 1947 and the period ever since. Our chart below illustrates those two periods:

Thousands of U.S. Households, 1900 to 2011

As best as we can determine, the shift between the two periods was caused by a technological change - the introduction of mass-production techniques in U.S. home construction by William Levitt in 1947.

These technological improvements were quickly adopted by home builders across the United States, transforming the industry from a large number of local builders who might only construct three to four homes in a year, to one dominated by regional and national builders capable of constructing hundreds or even thousands of dwellings per year.

References

U.S. Census Bureau. Statistical Abstract of the United States: 2003. Table No. HS-12. Households by Type and Size: 1900 to 2002.

U.S. Census Bureau. Table HH-4. Households by Size: 1960 to Present. [Excel Spreadsheet]. Accessed 3 February 2013.

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Welcome to the blogosphere's toolchest! Here, unlike other blogs dedicated to analyzing current events, we create easy-to-use, simple tools to do the math related to them so you can get in on the action too! If you would like to learn more about these tools, or if you would like to contribute ideas to develop for this blog, please e-mail us at:

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