Apartments in 78666

San Marcos:
September Rent Report

Welcome to the September 2026 San Marcos Apartment Report. In this assessment of the local rental market, Rentable data scientists and rental experts break down the September 2026 key findings and figures for the San Marcos rental landscape.

Our experts analyze the pricing trends — one-bedroom, two-bedroom, year-over-year and month-over-month — in San Marcos and surrounding areas and provide comparisons to the entire metro area, nearby cities and some of the most desirable and expensive cities in the United States. Take a look at the last 12 months of San Marcos average rent prices in the chart below.

September Prices: San Marcos vs. Surrounding Areas

Rent Prices in San Marcos and Surrounding Areas

Rent prices have decreased in San Marcos over the last month. But how have the surrounding areas fared when it comes to the recent volatility in apartment prices? Rent prices in 0 of the San Marcos suburbs increased last month. On the other hand, 0 local areas experienced a decrease in the price of a one-bedroom apartment.

More key findings include:

• Rents did not increase in any of the San Marcos suburbs

• Rents did not decrease in any of the San Marcos suburbs.

Data set for San Marcos and suburbs

Methodology

Each month, using over 1 million Rentable listings across the United States, we calculate the median 1-bedroom and 2-bedroom rent prices by city, state, and nation, and track the month-over-month percent change. To avoid small sample sizes, we restrict the analysis for our reports to cities meeting minimum population and property count thresholds.