Utah has 1 of the 20 counties that have seen the biggest growth in housing over the last decade

For the last couple of years, headlines about the housing market have dominated the news cycles. From housing shortages to sky-high home prices, we’ve all heard about how the pandemic has affected nearly every housing market across the nation. Many of us have experienced the phenomenon firsthand. But while the pandemic has certainly had an impact on the housing market, there are plenty of other factors that have spurred housing growth in counties across the nation—and these factors aren’t as widely discussed.

Take, for example, the massive impact the oil boom has had on housing in the Midwest. Between 2007 and 2012, employment in North Dakota’s oil and gas industry increased by 354%, resulting in a 19% population growth in western North Dakota alone. As oil companies—and oilfield employees—continue to move in, sleepy towns and counties have been upended by the sudden influx of residents. While more jobs may boost the economy, the rapid growth can also leave cities struggling to keep up with demands for health services, roads, transportation, and housing.

So which counties have seen the biggest housing growth over the last decade—and why? Better Mortgage, an online lender and homeownership platform with a free mortgage calculator, used data from the U.S. Census Bureau's decennial census to calculate which counties have seen the greatest increase in housing units over the last 10 years. The counties are ranked according to the percent change in housing units between 2010-2020, and the top 20 counties with the biggest growth in housing were selected for the national story. Census data on housing was released on August 12, 2021 for all counties in America. Here’s what you should know about your state.

Utah by the numbers

- Change in housing units (2010–2020): 3,885 (+36.7% since 2010)
- Housing units (2020): 14,462
- Housing units (2010): 10,577

Micropolitan communities—towns with populations of 10,000 to 50,000 residents—have exploded in popularity, which is a large part of why there’s been massive housing growth in Wasatch County, Utah, over the last decade. As more people sought to relocate to small towns with big amenities, Heber Valley in Wasatch County became the top micropolitan landing spot in the nation. Its close proximity to Salt Lake City, Sundance, and other popular locales has helped to keep new residents pouring into this county as well. In turn, housing developments have been built to accommodate the influx of residents—and even more developments are in the works.

In other areas of the nation, rapid rates of housing growth have other catalysts, including urban sprawl and economic growth. And, in rare cases, growth can even be caused by an unprecedented influx of retirees relocating to the area. The only consistent factor across these counties is that the subsequent housing growth has had a big impact on the housing market.

Keep reading to see which counties have been at the top of the housing market boom over the last decade.

Counties that have seen the biggest growth in housing over the last decade

#1. McKenzie County, North Dakota: 4,571 housing units added 2010-2020 (+147.9% since 2010)
#2. Williams County, North Dakota: 9,763 housing units added 2010-2020 (+93.3% since 2010)
#3. Hays County, Texas: 34,117 housing units added 2010-2020 (+57.4% since 2010)
#4. Dallas County, Iowa: 13,865 housing units added 2010-2020 (+50.9% since 2010)
#5. Comal County, Texas: 22,831 housing units added 2010-2020 (+48.5% since 2010)