Mortgage Calculator & Closing Costs: San Marcos, TX
Mortgage payment estimates, closing cost breakdowns, and homebuying data for San Marcos, Texas.
Median Home Price
$315K
Population
68K
Avg Monthly Rent
$1,320
Property Tax Rate
1.8% *
* Property tax shown is the Texas state average effective rate. Actual rates vary by county, city, and school district — check with your local assessor for exact rates in San Marcos.
San Marcos vs Texas Median
The median home price in San Marcos is $315,000, which is roughly in line with the Texas state median of $310,000.
Mortgage Calculator — San Marcos, TX
Pre-filled with San Marcos median home price and Texas tax/insurance rates. Adjust for your property.
Three down payment scenarios for a $315K home using Texas's 1.8% tax rate and $3,800/yr insurance.
5% Down
$2,855/mo
Down: $15,750
Loan: $299K
P&I: $1,891
Tax: $473
Insurance: $317
PMI: $175
10% Down
$2,746/mo
Down: $31,500
Loan: $284K
P&I: $1,792
Tax: $473
Insurance: $317
PMI: $165
20% Down (No PMI)
$2,382/mo
Down: $63,000
Loan: $252K
P&I: $1,593
Tax: $473
Insurance: $317
Income needed (28% rule): $102K/year with 20% down, $118K/year with 10% down.
Rent vs Buy in San Marcos
Rent
$1,320/mo
vs
Buy (10% down)
$2,746/mo
Price-to-rent ratio: 19.9 — A ratio between 15-20 means the rent vs buy decision in San Marcos depends heavily on your timeline. If you plan to stay 5+ years, buying likely wins. For shorter stays, renting preserves flexibility.
The median home price in San Marcos is $315,000, roughly in line with the Texas state median of $310,000. With a population of 67,553, San Marcos is a smaller market where home prices reflect strong demand and local economic factors.
Property taxes in Texas average 1.8% annually. This higher-than-average tax rate means a $315,000 home in San Marcos would carry roughly $473/month in property taxes alone — plan accordingly. Homeowners insurance in Texas runs approximately $3,800 per year. Insurance costs are notably high — factor this into your monthly budget.
Average rent in San Marcos is $1,320/month. The price-to-rent ratio in San Marcos is moderate, meaning the buy-vs-rent decision depends heavily on how long you plan to stay.
San Marcos presents moderate affordability. The $315K median puts homeownership within reach for median-income households, though down payment savings and closing costs require planning.
Run a Rent vs Buy analysis
Compare total costs of renting vs buying in San Marcos.