Texas Interstate 35 Corridor Drives Top US Boomtowns

A recent SmartAsset study highlighted the Interstate 35 corridor in Texas as a significant engine of population and economic expansion, with two of the nation's top boomtowns located less than 80 miles apart on this stretch of highway. According to ZeroHedge, New Braunfels ranked second and Georgetown first among over 400 cities with populations of at least 65,000, underscoring the rapid growth in these Texas boomtowns.

Key takeaways
New Braunfels and Georgetown, Texas, were identified as the top two boomtowns in the U.S. by a SmartAsset study.
Both cities are located along Interstate 35, a corridor linking major Texas cities that has seen substantial migration.
New Braunfels experienced a 40% increase in housing units and a 32% labor force expansion over five years, with Comal County's GDP growing at an annual rate of 6.8%.
Texas accounted for four of the top five boomtowns and 18 of the top 75, with Florida contributing 19.

Table of Contents
Texas Leads in Rapid Growth
Key Growth Metrics in New Braunfels and Georgetown
Broader Context of Boomtown Status
What to Watch Next for Regional Growth

Texas Leads in Rapid Growth

The SmartAsset study, which analyzed more than 400 U.S. cities with populations exceeding 65,000, positioned Georgetown as the top boomtown and New Braunfels as the second. These two communities are situated along Interstate 35, a critical artery connecting San Antonio, Austin, and Dallas. This corridor has absorbed a significant portion of Texas's inbound migration over the past decade, contributing to the rapid expansion observed in these areas. The state of Texas demonstrated its strong growth trajectory by securing four of the top five spots on the list, with Leander ranking fourth and the Dallas-Fort Worth suburb of Lewisville ranking fifth. Overall, Texas contributed 18 of the top 75 boomtowns, while Florida added 19, collectively representing nearly half of the cities on the list. For readers following broader market updates , this regional concentration of growth highlights specific areas of economic dynamism.

Key Growth Metrics in New Braunfels and Georgetown

The data supporting New Braunfels's high ranking is notable, even when compared to other fast-growing areas in the Sunbelt. Over a five-year period, housing units in New Braunfels increased by 40%, and its labor force expanded by 32%. Real gross domestic product (GDP) in Comal County, where most of New Braunfels is located, compounded at an annual rate of 6.8%. This pace was higher than almost every other county in the country. The SmartAsset study's composite score was based on these three metrics: housing supply, workforce size, and county-level output. Williamson County, home to Georgetown, reported an even faster compound rate for its real GDP at 7.7%. As of July 1, 2025, Census Bureau estimates placed New Braunfels's population at 122,492.

Broader Context of Boomtown Status

The SmartAsset report noted that some American cities have distinguished themselves by attracting people, investment, and development at an exceptional pace. While acknowledging that boomtown status does not guarantee equal benefits for everyone, the report emphasized that it reflects a city's expanding economic capacity and the new opportunities that arise from such growth. This expansion can lead to increased demand for infrastructure, services, and various goods, impacting local economies and potentially creating opportunities for businesses and residents. The concentration of these boomtowns along a key interstate suggests the importance of transportation corridors in facilitating economic and demographic shifts.

What to Watch Next for Regional Growth

As these Texas boomtowns continue to experience significant growth, market participants and local stakeholders may monitor several factors. These include ongoing trends in migration patterns, the continued development of housing and infrastructure to support the expanding population, and the diversification of local economies. Future reports on regional economic indicators, such as GDP growth, employment figures, and housing market data, will provide further insights into the sustainability and implications of this rapid expansion. The role of Interstate 35 as a critical economic artery will likely remain a focal point for understanding the dynamics of growth in this corridor.

Frequently Asked Questions

What are the top boomtowns in the U.S. according to SmartAsset?

According to a SmartAsset study, Georgetown and New Braunfels, both in Texas, ranked first and second, respectively, among over 400 U.S. cities with populations of at least 65,000.

What key metrics contributed to New Braunfels's high ranking?

New Braunfels's ranking was driven by a 40% increase in housing units, a 32% expansion in its labor force over five years, and a 6.8% annual compound rate for real GDP in Comal County.

Which U.S. states had the most boomtowns in the top 75?

Texas accounted for 18 of the top 75 boomtowns, and Florida contributed 19, together representing nearly half of the list.

What is the significance of the Interstate 35 corridor in this growth?

Interstate 35, linking San Antonio, Austin, and Dallas, has been instrumental in absorbing a large share of Texas's inbound migration and facilitating the economic and population expansion of cities like New Braunfels and Georgetown.

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