A new analysis of family migration patterns shows married couples with children increasingly moving from traditionally Democratic-voting states to Republican-voting states, with red states recording a net gain of 370,000 such families between 2019 and 2024.

The 2026 Family Structure Index, released jointly by the Center for Christian Virtue and the Institute for Family Studies, tracks family health across all 50 states using three primary measures: marriage rates, fertility rates, and the share of children raised by married parents.

The data also shows red states have experienced a 7.3% increase in their child population since 2000, while blue states have seen a 7.1% decline over the same period.

What the Right Is Saying

Conservatives have embraced the findings as validation of their policy approach to family formation. They argue that lower taxes, more affordable housing, and pro-family cultural norms in red states are directly attracting families who prioritize stability and child-rearing.

The Family Structure Index specifically highlights the role of religious attendance, noting that frequent church participation accounts for 57% of the variance in fertility rates across states. States with high religious attendance, such as Utah and Mississippi, have significantly higher birth rates than states like Vermont or Massachusetts.

Conservative commentators argue that the data proves progressive policies focused on government spending and regulatory approaches have failed to make blue states more family-friendly. They point to housing costs, crime rates, and public disorder in cities like San Francisco, New York, and Los Angeles as factors driving families out.

Pro-family advocates on the right say the findings should inform policy at all levels. They argue that states seeking to attract and retain families should prioritize affordable housing, job growth in middle-class sectors, public safety, and cultural environments that support marriage and child-rearing.

What the Left Is Saying

Progressive analysts and Democratic strategists have offered multiple critiques of the migration data and its implications. They note that the index was produced by conservative organizations, raising questions about methodology and potential selection bias in which metrics are emphasized.

Liberal economists argue that the migration patterns reflect economic cycles rather than policy choices. During the period studied, low mortgage rates and remote work expansion enabled families to relocate anywhere — a dynamic that benefited Sun Belt states regardless of political affiliation.

Some progressive voices point to what they call a 'chicken and egg' problem with the data. They argue that families with more children may self-select into states with lower costs of living and different cultural environments, rather than being drawn there by policy. This means the direction of causation between state policies and family decisions remains unclear.

Additionally, left-leaning policy advocates note that many blue states continue to see population growth through immigration and urban concentration. They argue that focusing solely on married family migration overlooks broader demographic trends, including the fact that blue states continue to attract young professionals and college-educated workers in higher numbers.

What the Numbers Show

The net migration figure of 370,000 married families with children from blue to red states between 2019 and 2024 comes from internal migration data analyzed by the Center for Christian Virtue. During this period, 840,000 such families moved from blue states to red states, while 470,000 moved in the opposite direction.

The child population differential is stark: red states have gained 7.3% in child population since 2000, while blue states have lost 7.1%. This represents a significant reversal of the historical concentration of children in more urban, Democratic-voting states.

The fertility rate correlation with religious attendance shows a 57% variance explained, meaning more than half of the difference in birth rates across states can be tied to religious practice. Utah's fertility rate remains among the highest in the nation, while New England states consistently post the lowest.

However, marriage and fertility rates have declined nationwide. No state has been immune to broader demographic shifts affecting family formation, including delayed marriage, higher educational attainment among women, and economic uncertainty.

The Bottom Line

The migration data reveals a clear trend: families with children, particularly married couples, are moving to red and purple states at higher rates than to blue states. The causes appear multifaceted — combining economic factors like housing costs and job markets with cultural elements like religious practice and community norms.

The findings present a challenge for policymakers in both parties. Blue states must address concerns about housing affordability and public safety if they wish to retain families, while red states must contend with the infrastructure and service demands that come with population growth.

The Family Structure Index provides one lens for understanding American family geography, though its origins with conservative organizations means progressive economists will likely continue to offer alternative interpretations of the underlying data. What remains undisputed is that families are making location decisions based on a complex mix of economic, cultural, and policy factors — and those decisions are reshaping the demographic map of America.