Last updated
Average Rent in San Marcos 78666 & Rent Trends
Rent prices and market trends across 9 apartment communities in San Marcos 78666, San Marcos, TX. Updated daily.
Market Average
$1,235/mo
▼ 2.3% from last month
Lowest Available
$760/mo
cheapest unit on market
Communities
9
tracked daily
Units Listed
142
available now
Price Cuts This Week in San Marcos 78666
23 listed units across 2 buildings in San Marcos 78666 dropped their asking rent in the past 7 days, an average cut of $85/mo. These are the largest cuts, tracked unit by unit with daily price checks.
| Apartment | Unit | Last Week | Now | Cut |
|---|---|---|---|---|
| Avelyn San Marcos | Unit 4302, E | $3,097 | $2,244 | $853 |
| Avelyn San Marcos | Unit 9203, B- ADV | $1,484 | $1,206 | $278 |
| Hawthorne at Blanco Riverwalk | Unit 2101 | $1,554 | $1,460 | $94 |
| Hawthorne at Blanco Riverwalk | Unit 3309 | $1,376 | $1,333 | $43 |
| Hawthorne at Blanco Riverwalk | Unit 5110 | $1,436 | $1,393 | $43 |
| Hawthorne at Blanco Riverwalk | Unit 7309 | $1,376 | $1,333 | $43 |
| Hawthorne at Blanco Riverwalk | Unit 1111 | $1,414 | $1,372 | $42 |
| Hawthorne at Blanco Riverwalk | Unit 1204 | $1,354 | $1,312 | $42 |
San Marcos 78666 vs San Marcos, TX Average
San Marcos 78666 is the same price as the San Marcos, TX average . The citywide average is $1,235/mo across all neighborhoods.
Is Rent Going Up or Down in San Marcos 78666?
As of August 2026, the average rent in San Marcos 78666 is $1,235 per month across 9 apartment communities and 142 available units. Rents have decreased $31 (2.3%) over the past month.
The most affordable option is Treehouse starting at $760/mo. By unit type, a studio averages $1,212/mo, a 1-bedroom averages $1,452/mo, a 2-bedroom averages $1,154/mo, a 3-bedroom averages $1,271/mo, a 4-bedroom averages $997/mo.
Prices range from $760 to $2,244 per month. The most common price point is the $800 range, where 55 units are currently listed.
San Marcos 78666 Rent Price History
View as table
| Month | Avg Rent | Change | Properties |
|---|---|---|---|
| July 2026 | $1,342 | - | 9 |
| August 2026 | $1,259 | -$83 | 9 |
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.
Average Rent by Bedroom
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 | $760/mo | $760/mo | 1 | 3.3 |
| Union San Marcos | $790/mo | $1,070/mo | 5 | 4.1 |
| The Local Downtown | $882/mo | $897/mo | 6 | 4.6 |
| Cheatham Street Flats | $928/mo | $1,026/mo | 21 | 4 |
| Villas at Willow Springs | $975/mo | $1,081/mo | 59 | 3.1 |
| Encino Pointe | $989/mo | $1,246/mo | 3 | 3.6 |
| Avelyn San Marcos | $1,206/mo | $1,648/mo | 15 | 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
$49,000/year
Based on the 30 percent rule, using our tracked average rent of $1,235/mo.
Comfortable income
$59,000/year
Based on the 25 percent rule, leaving more room for savings, transport, and groceries.
To afford the cheapest tracked apartment ($760/mo), you need to earn at least $30,000/year.
Cost of living in San Marcos 78666
We only have live rent data for San Marcos 78666 so far. The full cost of living breakdown (utilities, groceries, transportation, healthcare) is coming soon.
| Category | Monthly estimate |
|---|---|
| Rent (market average) | $1,235 |
| Estimated total | $1,235/mo |
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 are refreshed annually.
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
Browse all 9 communities with daily-updated pricing and availability.