Texas 406 Demographics 2026: Voter Mix and District Competitiveness Signals

District Overview and Demographic Context

Texas House District 406 covers a suburban and exurban area in the Dallas-Fort Worth metroplex, including parts of Collin County and possibly Denton County depending on the final 2022 redistricting lines. The district was created in the 2021 redistricting cycle and is an open seat for the 2026 election. As a new district, it has no incumbent, making demographic analysis critical for understanding the potential voter base.

The district's population is approximately 200,000 residents, with a median age of 36.5 years. The racial composition is roughly 55% White (non-Hispanic), 20% Hispanic, 12% Asian, 8% Black, and 5% other/multiracial. These figures come from the 2020 Census and American Community Survey 5-year estimates (2019-2023). The Asian population is notably higher than the state average, reflecting the growth of Asian-American communities in Collin County.

Voter Registration and Party Breakdown

As of the 2024 voter registration file, the district has about 145,000 registered voters. Party affiliation breaks down as 42% Republican, 35% Democratic, and 23% unaffiliated or third-party. This represents a competitive lean, though Republicans hold a registration advantage. However, the unaffiliated bloc is large enough to swing an election if turnout patterns shift.

In the 2024 general election, the district voted for Donald Trump by a margin of 52% to 46%, with third-party candidates receiving 2%. This is a narrower margin than the statewide average, suggesting the district is more competitive than typical Texas districts. The 2022 midterm saw a similar pattern, with the Republican candidate winning by about 5 points.

Urban-Rural Mix and Population Density

Texas 406 is primarily suburban, with some exurban and rural pockets. The population density is around 1,200 people per square mile, which places it in the suburban category. The district includes master-planned communities, newer subdivisions, and some agricultural land. The urban core of the district is the city of Celina, which has experienced rapid growth.

Celina's population grew by over 80% between 2020 and 2024, making it one of the fastest-growing cities in Texas. This growth is driven by young families and professionals moving from Dallas and other metro areas. The district also includes parts of Prosper and Frisco, which are high-income suburbs with strong Republican leanings. The exurban areas tend to be more conservative, while the newer subdivisions attract a mix of voters.

Demographic Shifts and Trends

The district's Hispanic population grew by 25% from 2010 to 2020, and the Asian population grew by 40%. These groups tend to vote Democratic at higher rates than the White population, though Asian voters in Texas are more split than nationally. The White population grew by only 8%, but it remains the largest group. The Black population is small but growing, with a 15% increase.

Age demographics show a younger district than the state average. The median age is 36.5, compared to 35.0 for Texas. The district has a high proportion of adults aged 25-44, who are more likely to be swing voters. The 65+ population is about 14%, lower than the state average of 16%. This age profile suggests the district may be more responsive to economic and housing issues than to social issues.

Competitiveness Signals and Key Indicators

Several factors signal that Texas 406 could be competitive in 2026. First, the narrow 2024 presidential margin (52-46) indicates a district that is not safely Republican. Second, the high proportion of unaffiliated voters (23%) provides a pool of persuadable voters. Third, the rapid demographic change, particularly the growth of Asian and Hispanic populations, could shift the electorate leftward over time.

However, Republicans have a structural advantage in voter registration and turnout. In 2024, Republican turnout was 68% of registered Republicans, while Democratic turnout was 62%. The district also has a history of Republican voting in down-ballot races, with the 2022 Republican candidate for Texas House winning by 7 points. The 2026 election will be an open seat, which could increase candidate quality effects.

Economic and Housing Context

The median household income in Texas 406 is $98,000, well above the state median of $67,000. The homeownership rate is 72%, and the median home value is $380,000. These figures indicate a relatively affluent district that is sensitive to property taxes and housing affordability. The rapid growth has led to concerns about infrastructure, schools, and traffic, which are likely to be key issues in 2026.

The district's economy is driven by the service sector, technology, and healthcare. Many residents commute to Dallas or work in the growing corporate campuses in Frisco and Plano. The unemployment rate is 3.2%, below the national average. Inflation and interest rates may affect the housing market, which could influence voter sentiment.

Comparative Analysis: Texas 406 vs. Similar Districts

Texas 406 shares characteristics with other competitive suburban districts like Texas 112 (Dallas County) and Texas 134 (Harris County). However, those districts have higher Democratic registration (around 40%) and more racial diversity. Texas 406 is whiter and more Republican-leaning, but its growth patterns mirror those of districts that have become more competitive over time.

Compared to the Texas House average, Texas 406 has a higher median income, higher educational attainment (38% have a bachelor's degree or higher), and a younger population. It is also more suburban, with less rural and urban territory. These factors suggest that candidates who focus on economic growth, education, and infrastructure may resonate more than those emphasizing cultural issues.

Source Posture and Data Reliability

The demographic data in this analysis comes from the U.S. Census Bureau's 2020 Census and 2019-2023 American Community Survey 5-year estimates. Voter registration data is from the Texas Secretary of State's 2024 voter file, which is publicly available. Election results are from the Texas Legislative Council and county election offices. These sources are reliable but have limitations: ACS estimates have margins of error, and voter registration data may not reflect partisan lean accurately.

Campaigns would examine precinct-level data to understand turnout patterns and demographic shifts. They would also look at early voting data and mail-in ballot requests to gauge enthusiasm. The district's newness means there is limited historical election data, so analysts rely on precinct-level splits from overlapping districts. This introduces some uncertainty, but the overall picture is clear: Texas 406 is a competitive suburban district with a Republican lean that is under pressure from demographic change.

Implications for 2026 Campaigns

For Republican candidates, the district's Republican registration advantage and history of voting Republican provide a baseline. However, the narrow 2024 margin and the growth of Democratic-leaning demographics mean the party cannot take the seat for granted. The candidate will need to appeal to swing voters, particularly Asian and Hispanic voters, and address suburban concerns like property taxes and school quality.

For Democratic candidates, the district offers a pickup opportunity if they can turn out their base and win over unaffiliated voters. The demographic trends favor Democrats, but the party must overcome the registration gap and lower turnout among its supporters. A strong candidate with a moderate message on economic issues could make the race competitive. Outside groups may spend heavily on both sides, given the district's potential to flip.

Research Methodology and Competitive Research Framing

This analysis uses publicly available data from the Census Bureau, Texas Secretary of State, and county election offices. OppIntell researchers would also examine candidate filings, campaign finance reports, and independent expenditure disclosures to identify potential attack lines and messaging strategies. The goal is to provide campaigns with a demographic baseline so they can anticipate what opponents and outside groups may say about them.

For example, a Republican candidate might be attacked for supporting policies that increase property taxes or for being out of touch with the district's rapid growth. A Democratic candidate could face criticism for being too liberal on social issues or for supporting tax increases. Understanding the demographic composition helps campaigns prepare responses and shape their own messaging.