Either because of necessity or a desire to remain close to loved ones, multigenerational living is in the middle of a comeback.

Since the recession, home prices have risen and inventory has dropped in many major markets, requiring potential buyers to rethink what they can afford. Meanwhile, the economic effect has also touched older buyers looking to downsize or retire. In the middle of those two issues, the idea of purchasing a single property for two or more generations has become a more popular and even trendy move to make.

Builder Online looked into some of the data and noticed that Pew Research's analysis of Census data showed that millennials are actually the driving force behind the trend. In 2014, 60.6 million people lived together with multiple generations, and 31 percent of all Americans in a multigenerational household were between the ages of 25 and 29. Meanwhile, those 85 and older made up 24 percent, way down from 1940 when they made up 63 percent of the residents. 

However, the National Association of Realtors' research claims that younger boomers (between the ages of 52 and 61) are the ones most likely to actually purchase a multigenerational property (20 percent). The number one reason? Adult children and relatives moving back in thanks to the tight housing market and economic issues. 

The biggest question is where multigenerational households are popping up most often, and the answers are in the Census data. The Pacific region of the United States, which includes Washington, Oregon, and California, leads the way with 35.8 percent of 18-34-year-olds living with parents. The South Atlantic Central region (From Delaware and Maryland to Florida along the East Coast) was right behind at 35.2 percent.

The Pacific region was also the most likely one to find parents or seniors 65 or older living in a home owned by their children (14.74 percent). The South Atlantic Central (10.78 percent) and West South Central (10.76), which includes Texas, Oklahoma, Arkansas, and Louisiana, were next in line. Cities such as San Francisco, Los Angeles, and Houston are said to see higher numbers in these trends due to a larger population of ethnic groups than other cities. 

The U.S. region where you’re least likely to find multigenerational households? That would be the West North Central (Minnesota, North Dakota, South Dakota, Iowa, Missouri, Nebraska, and Kansas). There, only 26.1 percent of 18-34-year-olds live with parents and a scant 5.41 percent of parents or seniors 65 or older live with children.