San Marcos, TX 78666 Housing Market
- Active listings69currently for sale
- Pending sales49under contract
- Median asking price$414,990current listings
- Inventory age2 daysmedian time the current active listings have been on the market
- Closings tracked directly (6 mo)366a tracked sample, not a market total
- Median sold price$319,990last 6 months
- Middle half of sold prices$270k to $425k25th to 75th percentile
What the numbers say
As of July 18, 2026, Resideline is tracking 69 active listings and 49 pending sales in ZIP code 78666. That pending-to-active ratio of 0.71 points to a seller's market: buyers are absorbing inventory quickly relative to what is available.
The median asking price of current listings is $414,990, while the median of the 366 closings Resideline tracked directly over the last six months was $319,990. Those two figures describe different sets of homes, so any gap between them reflects the mix of what is listed now versus what recently sold, not a negotiating discount. The median active listing in 78666 has been on the market for 2 days.
Frequently asked questions
What is the median home price in 78666?
The median closed sale price in San Marcos, TX 78666 was $319,990 over the last six months, based on 366 closings Resideline tracked directly. Texas is a non-disclosure state, so this is a tracked sample rather than all recorded closings. The middle half of those sales ranged from $270,000 to $425,000.
Is 78666 a buyer's or seller's market?
Resideline is currently tracking 49 pending sales against 69 active listings in 78666, a pending-to-active ratio of 0.71. Ratios of 0.6 or higher usually indicate a seller's market, 0.35 to 0.6 a competitive market, and lower values a more balanced one. By that yardstick, 78666 currently looks like a seller's market.