Best In Texas Real Estate™: San Marcos-New Braunfels
2026-10-07
🏆 #1 of 10 ZIP codes in Hays and Comal counties, #1 of 10 Texas ZIP codes — ALEX Intelligence 2026.
The San Marcos-New Braunfels MSA is not just growing—it is concentrating. ZIP 78666, with 88,583 residents, is now the most populous ZIP in Texas by county-level metro, surpassing even some city centers. This is not a blip—it’s a structural shift in how Texas urbanizes.
This data comes directly from the ALEX Intelligence report: https://alex-companies.com/data/2026-10-07-san-marcos-nb-population-zcta-mkt
What does 88,583 people in a single ZIP code mean for your investment strategy? How do you plan for infrastructure, services, and economic resilience at this scale?
Largest ZIP Codes in the San Marcos-New Braunfels MSA (2024) (ALEX Intelligence — 2026)
#1 ZIP 78666 <- this market
#2 ZIP 78640
#3 ZIP 78610
#4 ZIP 78132
#5 ZIP 78737
Largest ZIP Codes in Texas by Population (2024) (ALEX Intelligence — 2026)
#1 ZIP 78666 — Hays County, Texas <- this market
#2 ZIP 78640 — Hays County, Texas
#3 ZIP 78610 — Hays County, Texas
#4 ZIP 78132 — Comal County, Texas
#5 ZIP 78737 — Travis County, Texas
Source: https://alex-companies.com/data/2026-10-07-san-marcos-nb-population-zcta-mkt
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Real Estate Strategy & Intelligence Leader. Democratized Blue Ocean Strategist & Operator.
Diane Hart Alexander, MBA, MHA
Chair & CEO, ALEX Companies
Designated Broker, Alexander Tiffany Southwest, LLC dba ALEX.realestate, et.al.
Texas License #574877-B · Broker License #565194-BB
[email protected] · +1 713.591.9902
Source data: Source: U.S. Census Bureau, American Community Survey 5-Year Estimates, 2024 · ALEX Intelligence computation
Licensed by the Texas Real Estate Commission. Broker: Alexander Tiffany Southwest, LLC · License #565194-BB.
Diane Hart Alexander, Chair & CEO, ALEX Companies · Designated Broker · #574877-B · George Arnold Alexander III, Director, ALEX Companies · Associate Broker · #574878-B
Texas Real Estate Commission Information About Brokerage Services · TREC Consumer Protection Notice · trec.texas.gov
Diane Hart Alexander, Chair & CEO, ALEX Companies · Designated Broker · #574877-B · George Arnold Alexander III, Director, ALEX Companies · Associate Broker · #574878-B
Texas Real Estate Commission Information About Brokerage Services · TREC Consumer Protection Notice · trec.texas.gov



