The Great Migration: Why Americans Are Leaving Blue Counties for Red Counties

A significant migration trend is reshaping the American housing landscape: more people are moving from Democratic-leaning "blue" counties to Republican-leaning "red" counties, driven primarily by a search for affordability. Data from the first half of 2017 showed that 7.4 percent more people moved out of blue counties than moved into them. In contrast, red counties saw a net gain in migration, with about 1 percent more people moving in than out. This trend, illuminated by an analysis of over one million user searches on a major real estate platform, indicates that housing costs are a powerful force influencing where Americans choose to live.

What Is Driving the Migration from Blue to Red Counties?

The primary driver of this population shift is economic. Housing affordability is the central issue. The median sale price—the middle point of all home sales prices in a given area—of a home in a blue county was approximately $360,000 during the study period. This is more than 62% higher than the median price of $223,000 in a red county. While incomes in blue counties are often higher, the financial burden of housing is significantly greater. Based on Census data, residents of blue counties spent an average of 32% of their household income on rent, nearly 5 percentage points higher than residents of red counties.

This cost disparity forces families to make practical decisions. For example, a homebuyer in Denver County (a blue county) faced a typical home price of $400,000. Just a move away to Douglas County (a red county), homes sold for about three-fifths of that price after controlling for size. This stark difference in cost of living makes red and purple counties—those with a more balanced political makeup—increasingly attractive for achieving homeownership.

Is This Trend More Than Just Economics?

While affordability is the main factor, politics also plays a role in relocation decisions, a phenomenon researchers call the "Big Sort." This refers to a long-term trend of Americans self-selecting into communities where their neighbors share similar lifestyles and political views. A survey found that 41% of recent homebuyers expressed hesitation about moving to a place where most residents held opposing political views.

However, the current data suggests economic pressures may be overwhelming these political preferences. The trend was most pronounced in states with high housing costs like Colorado, Oregon, and Washington, where blue counties saw more than 10% more people leaving than arriving. This indicates that the need for an affordable home can outweigh the desire for political alignment.

What Does This Mean for Home Buyers Today?

For anyone currently navigating the real estate market, this trend offers a crucial lesson: expanding your search geographic area can unlock significant affordability. The migration pattern highlights the value of considering nearby counties, even if they have a different demographic or political character.

• The core advice for buyers is to prioritize budget and lifestyle needs. While neighborhood culture is important, the financial freedom offered by a more affordable area can be transformative.
• Evaluate commuting corridors. Many of those moving from blue to red counties are likely relocating to suburbs within a reasonable commute to their jobs in urban centers.
• Understand that this trend may continue. With no sign of a drastic drop in home prices in expensive coastal urban areas, the migration to more affordable regions is likely to persist.

The decision of where to live is complex, but the data is clear: the pursuit of affordable housing is powerfully redirecting American migration patterns, potentially leading to a more geographically integrated population.