Mortgage Rates for ZIP Code 78220 — San Antonio, Texas — October 2026
Rate benchmark date: October 15, 2026 | National benchmark rates with Amortio estimated inputs for ZIP code 78220 in San Antonio, TX
ZIP code 78220 is located in San Antonio, Texas. The population, home value, and income figures on this page are Amortio modeled estimates derived from San Antonio city-level inputs, not Census ZIP-level counts. The 30-year fixed benchmark used here is 7.4%, the national Freddie Mac PMMS average as of October 15, 2026. With an estimated home value of $267,087 and a 20% down payment of $53,417, homebuyers in ZIP 78220 can expect a monthly principal and interest payment of approximately $1,479.
Mortgage Rate Benchmarks for ZIP Code 78220
Below are the national benchmark rates applied to ZIP code 78220 (San Antonio, TX) as of October 15, 2026. The 30-year and 15-year fixed rows are Freddie Mac PMMS averages; the ARM, FHA, VA, and jumbo rows are Amortio planning estimates. These are not ZIP-specific lender quotes. Rates vary by lender, credit score, and loan-to-value ratio. Use our free calculator to see your personalized estimate.
| Loan Type | Rate Used | National Avg | Difference |
|---|---|---|---|
| 30-Year Fixed | 7.4% | 7.4% | 0% |
| 15-Year Fixed | 6.71% | 6.71% | 0% |
| 5/1 ARM | 6.87% | 6.87% | 0% |
| FHA | 6.77% | 6.77% | 0% |
| VA | 6.57% | 6.57% | 0% |
| Jumbo | 7.17% | 7.17% | 0% |
Housing Market in ZIP Code 78220
The housing market in ZIP code 78220 (San Antonio) offers relatively affordable housing compared to many areas. Amortio's modeled household income input for this area is $53,557, and the estimated cost of living index is 93 (national average = 100). Based on the 28% affordability rule, you would need an income of approximately $80,271 to comfortably afford a home at the estimated value, which exceeds the modeled income input.
Monthly Payment Breakdown for ZIP 78220
Based on the estimated home value of $267,087 with 20% down ($53,417), here is what you can expect to pay monthly in ZIP code 78220:
15-Year vs. 30-Year Mortgage in ZIP 78220
Choosing a 15-year mortgage in ZIP code 78220 at 6.71% instead of a 30-year at 7.4% would save you $192,960 in total interest over the life of the loan. However, your monthly payment would be $1,886 instead of $1,479 — an increase of $407 per month.
Methodology & Mortgage Rate Data Sources
How we calculate mortgage figures for ZIP code 78220: Rates are not adjusted for this ZIP code. The 30-year and 15-year fixed rows use the Freddie Mac PMMS national average dated October 15, 2026; ARM, FHA, VA, and jumbo rows are Amortio planning estimates. Home value, income, population, and cost-of-living figures are modeled estimates derived from San Antonio city-level inputs, not ZIP-level property records.
- Benchmark rates from Freddie Mac PMMS weekly survey , the most widely cited source for 30-year and 15-year fixed conforming mortgage rates.
- Check local home prices against the FHFA House Price Index and US Census Bureau ACS housing value estimates for the county containing ZIP 78220; the estimate on this page is not taken from those sources.
- Conforming loan limit for ZIP 78220 set by the FHFA Annual Conforming Loan Limit , $832,750 for most US counties in 2026, higher in designated high-cost areas.
- Check flood zone status and insurance cost factors with the FEMA Flood Map Service Center , relevant for property in or near flood zones in this ZIP code.
- Mortgage consumer protections per CFPB Mortgage Tools , the Consumer Financial Protection Bureau's buyer's guide and rate comparison resources.
Authoritative mortgage rate sources:
- Freddie Mac PMMS, weekly 30yr and 15yr fixed rate survey
- FRED, Federal Reserve Economic Data, interest rate history and forecasts
- FHFA, conforming loan limits and house price index
- HUD, FHA mortgage programs and down payment assistance
- FEMA Flood Map Service, flood zone status for ZIP 78220
- CFPB, mortgage consumer protections and rate tools
Rate Disclaimer: Rates shown are national benchmarks and planning estimates, not quotes for 78220, and may not reflect your actual rate. Your rate depends on credit score, LTV ratio, loan type, and lender. Rates change daily. Obtain personalized quotes from multiple lenders. This is not a loan offer.
Reviewed by Elena Farrow · Rate benchmark dated October 15, 2026 (Freddie Mac PMMS) · 2026 FHFA baseline conforming loan limit
Calculate Your Mortgage Payment for ZIP 78220
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Open Free CalculatorFrequently Asked Questions About ZIP Code 78220
What are the current mortgage rates in ZIP code 78220?
Amortio does not have lender rate data specific to ZIP code 78220. As of October 15, 2026, the national benchmark used on this page is 7.4% for a 30-year fixed and 6.71% for a 15-year fixed (Freddie Mac Primary Mortgage Market Survey). The FHA (6.77%) and VA (6.57%) figures are Amortio planning estimates, not survey averages. Actual quotes in San Antonio, Texas vary by lender, credit score, down payment, points, and loan type.
What is the median home price in ZIP code 78220?
Amortio's estimated home value input for ZIP code 78220 is $267,087. It is a modeled planning figure derived from San Antonio city-level inputs, not a reported sales median. With a 20% down payment of $53,417, estimated principal and interest is $1,479 per month plus about $394 in property taxes.
How much income do I need to buy a home in ZIP 78220?
Using the 28% rule, you would need an annual income of approximately $80,271 to afford a home at the $267,087 estimated value used for ZIP code 78220. Amortio's modeled household income input for this area is $53,557; check Census ACS data for the official ZIP-level figure. That income input is below this threshold, so households would need to earn more or consider homes below $267,087.
How do mortgage rates in ZIP 78220 compare to the national average?
The rates shown for ZIP code 78220 are the national benchmark itself (7.4% for a 30-year fixed as of October 15, 2026), so they do not show a local premium or discount. Real quotes in San Antonio, Texas can differ with lender competition, loan size, property type, and borrower profile, so compare several Loan Estimates.
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Rate benchmark date: October 15, 2026. Rates are national benchmarks and planning estimates applied to ZIP code 78220 in San Antonio, Texas, not local lending data. Individual rates may vary by lender, credit score, loan amount, and other factors. Use our free calculator for a personalized estimate.