If you’ve been paying attention, you know the days of Ozzie and Harriet or even the Brady Bunch are well behind the United States.

Living arrangements, how people decide to live and when they decide to form households all have a direct impact on housing demand and the type of housing people choose — small or large, number of bedrooms, and so on.

A new infographic from Sparefoot shows just how dramatically things have changed over the past four decades.

Some of the biggest changes include more people living alone, more people living with relatives and less people living with a spouse.

Check it out.

Click to enlarge

(Source: Sparefoot)