Last updated
Average Rent in San Marcos 78666 & Rent Trends
Rent prices and market trends across 5 apartment communities in San Marcos 78666, San Marcos, TX. Updated daily.
Market Average
$1,281/mo
▲ +4% from last month
Lowest Available
$865/mo
cheapest unit on market
Communities
5
tracked daily
Units Listed
29
available now
Rent Watch: cuts and increases
Open Rent Watch →See current options while we confirm new price comparisons. Filter by bedrooms and budget, then inspect each building’s history.
San Marcos 78666 vs San Marcos, TX Average
San Marcos 78666 is more expensive than the San Marcos, TX average by $86/mo (7%). The citywide average is $1,195/mo across all neighborhoods.
Is Rent Going Up or Down in San Marcos 78666?
As of October 2026, the average rent in San Marcos 78666 is $1,281 per month across 5 apartment communities and 29 available units. Rents have increased $49 (4%) over the past month.
The most affordable option is Treehouse starting at $865/mo. By unit type, a 1-bedroom averages $1,281/mo.
Prices range from $865 to $1,599 per month. The most common price point is the $1,200 range, where 20 units are currently listed.
San Marcos 78666 Rent Price History
View as table
| Month | Avg Rent | Change | Properties |
|---|---|---|---|
| July 2026 | $1,273 | - | 7 |
| August 2026 | $1,278 | +$5 | 7 |
| September 2026 | $1,273 | -$5 | 7 |
| October 2026 | $1,315 | +$42 | 6 |
The trend line and monthly averages track each building's average listed price, recorded daily with outliers trimmed. The current month is a month-to-date figure, so it can sit above or below today's live market average shown at the top of this page.
Rent Price Distribution
Rent by Bedroom Type in San Marcos 78666
Rent Prices by Apartment in San Marcos 78666
| Property | Starting at | Average | Units | Rating |
|---|---|---|---|---|
| Treehouse | $865/mo | $865/mo | 1 | 3.3 |
| Encino Pointe | $899/mo | $1,159/mo | 4 | 3.6 |
| Hawthorne at Blanco Riverwalk | $1,208/mo | $1,309/mo | 10 | 4.5 |
| Whispering Pointe Apartments | $1,231/mo | $1,231/mo | 1 | 4.9 |
| Avelyn San Marcos | $1,257/mo | $1,332/mo | 13 | 4.7 |
Frequently Asked Questions About Rent in San Marcos 78666
What is the average rent in San Marcos 78666?
Is rent going up or down in San Marcos 78666?
What is the cheapest apartment in San Marcos 78666?
How much is a 1-bedroom apartment in San Marcos 78666?
How many apartments are available in San Marcos 78666?
What salary do I need to live comfortably in San Marcos 78666?
Built on the 25 to 30 percent rent-to-income guideline used by most landlords and credit-scoring models.
Minimum to afford average rent
$51,000/year
Based on the 30 percent rule, using our tracked average rent of $1,281/mo.
Comfortable income
$61,000/year
Based on the 25 percent rule, leaving more room for savings, transport, and groceries.
To afford the cheapest tracked apartment ($865/mo), you need to earn at least $35,000/year.
Median household income in San Marcos 78666 is $51,030 , about 17% below the comfortable-living threshold.
Cost of living in San Marcos 78666
Overall prices in San Marcos 78666 runs below the national average by about 2% (BEA Regional Price Parity index 98.3, where 100 equals the U.S. average). The breakdown below estimates monthly costs for a single adult, using national consumer-spending baselines from the Bureau of Labor Statistics scaled by San Marcos 78666's regional price parities.
| Category | Monthly estimate |
|---|---|
| Rent (market average) | $1,281 |
| Utilities | $543 |
| Groceries | $502 |
| Transportation | $1,295 |
| Healthcare | $632 |
| Other goods and services | $1,011 |
| Estimated total | $5,264/mo |
Population
68,920
Median household income
$51,030
Census median rent
$1,299/mo
Census rent burden
38.7%
Median age
25.5
Mean commute
24 min
Methodology
Rent data
Sourced directly from each tracked apartment community and refreshed every 24 hours. Every listed unit price on this page is real and listed today.
Cost of living
Estimates combine national consumer-spending baselines from the U.S. Bureau of Labor Statistics (Consumer Expenditure Survey) with the U.S. Bureau of Economic Analysis Regional Price Parities (MARPP dataset). Both are peer-reviewed federal data releases published annually.
Salary to live comfortably
Applies the standard 25 to 30 percent rent-to-income rule on top of the listed rent. This is the same affordability guideline used by most landlords and credit-scoring models.
Demographic figures
Median household income, population, median age, commute time, Census median rent, and rent as percentage of income come from the U.S. Census Bureau's American Community Survey 5-year estimates, the most recent complete release.
Cost of living and demographic figures were last published in 2023.
Google Search Trends for San Marcos 78666 Apartments
Search interest for apartments in this area over the past 12 months.
Search Interest Over Time
Explore San Marcos 78666 Apartments
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