ZIP 78666 - 860Z200US78666 — Demographic Snapshot (2023)

Explore ZIP 78666 demographics: 87,775 residents, $55,478 median income, $271,900 median home value, and diverse community insights for 2023.

Aug. 26, 2025

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Overview

If you’re considering a move, investment, or business opportunity in ZIP 78666, located in the vibrant San Marcos area of Texas, this demographic and housing snapshot offers a clear picture of the community in 2023. With a sizable population, diverse cultural makeup, and a range of housing options, this area presents unique opportunities for homebuyers, real estate investors, small-business owners, and analysts. Let’s break down the key metrics to help you make informed decisions about living, working, or investing in ZIP 78666.

Population & Households

ZIP 78666 is home to a robust population of 87,775 residents as of 2023, making it a dynamic and growing community. This area supports 33,836 households, reflecting a strong base of families, students, and professionals. With 36,354 total housing units available, there’s a notable supply of homes and rentals to accommodate the population, though demand remains a factor to watch for those entering the market.

Income & Housing Costs

The median household income in ZIP 78666 stands at $55,478, which provides a realistic benchmark for understanding the economic landscape. For homebuyers and investors, the median house value is $271,900—a figure that suggests a moderately priced market with potential for growth, especially compared to larger Texas metros. Renters, on the other hand, face a median rent of $1,294 per month, which aligns with the area’s cost of living and may influence decisions for those weighing renting versus buying. These numbers offer a balanced perspective for budgeting and investment planning in this ZIP code.

Race & Ethnicity

ZIP 78666 boasts a diverse community, with a racial and ethnic composition that reflects a rich cultural tapestry. White residents make up 44.69% of the population, closely followed by Hispanic residents at 43.84%, highlighting a near-evenly split demographic. Black residents account for 4.93%, and Asian residents comprise 1.66%. This diversity can be a significant draw for businesses seeking a broad customer base or for families looking for an inclusive environment to call home.

Key Facts

  • Total population: 87,775 residents, indicating a sizable and active community.
  • Total households: 33,836, supporting a mix of family and individual living arrangements.
  • Total housing units: 36,354, offering a range of options for potential buyers and renters.
  • Median household income: $55,478, reflecting a moderate economic base.
  • Median house value: $271,900, suggesting an accessible yet appreciating real estate market.
  • Median rent: $1,294, providing insight into rental affordability.
  • Diverse demographics: Nearly balanced White (44.69%) and Hispanic (43.84%) populations, with smaller Black (4.93%) and Asian (1.66%) communities.

What This Means for You

For homebuyers, ZIP 78666 offers a promising market with a median home value of $271,900, which could be within reach for many, especially first-time buyers or those relocating from pricier areas. The diversity and population size suggest a welcoming, active community—ideal for families or individuals seeking connection.

For real estate investors and agents, the combination of a growing population (87,775) and a solid number of housing units (36,354) points to steady demand. The median rent of $1,294 also indicates a viable rental market, particularly for student or young professional tenants near San Marcos institutions like Texas State University.

For small-business owners, the diverse demographic makeup and moderate median income of $55,478 suggest a customer base with varied needs and spending power. Whether you’re opening a retail shop, restaurant, or service-based business, this ZIP code’s cultural mix and population density offer a strong foundation for building a loyal clientele.

For analysts, these metrics provide a baseline for deeper market studies, whether you’re tracking housing trends, economic shifts, or demographic changes in ZIP 78666. The data reflects a balanced, evolving area worth monitoring for future opportunities.

Run This Study Yourself

  • Curious about other ZIP codes or want to dive deeper into ZIP 78666? Start by visiting ZipcodeGPT for a user-friendly way to access detailed demographic and housing insights.
  • Enter any ZIP code to generate a customized report tailored to your needs, whether you’re buying, investing, or planning a business.
  • Use the data to compare markets, spot trends, and make confident decisions with the latest available stats at your fingertips.

Frequently Asked Questions about ZIP 78666

  • What is the population of ZIP 78666?
    As of 2023, the estimated population of ZIP 78666 is 87,775.
  • How many households are in ZIP 78666?
    ZIP 78666 has approximately 33,836 households as of 2023.
  • What is the median household income in ZIP 78666?
    The median household income is $55,478 (ACS 2023).
  • What is the median home value in ZIP 78666?
    The median value of owner-occupied homes is $271,900 (ACS 2023).
  • What is the median monthly rent in ZIP 78666?
    Median gross rent is approximately $1,294 per month (ACS 2023).

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