San Antonio-New Braunfels, TX · Texas
Guadalupe County
ZIP 78638
178,368 residents1,717 permits TTM$93,776 median HHI7 ZIP codesUpdated April 16, 2026
Investor first look
Median home value
$285,900
ACS 5-Year
Cap rate proxy
6.0%
FMR × 0.65 ÷ Home Value
Rent-to-income
18.4%
HUD FMR ÷ ACS HHI
Net migration
+3.54%
IRS SOI
Permits (TTM)
1,717
Census BPS
Climate risk
91.5
FEMA NRI (0–100)
ZIP 78638
Median home value
$285,900
Gross yield
5.7%
Buy Box score
0.7
Section 8 gap
-5.5%
Affordability
P/I: 3.8R/I: —
Section 8 detail
SAFMR: $1,360Rent: $1,439Gap: -5.5%
ZIP code breakdown7 ZIP codes
| ZIP | Median home value | Rent (FMR 2BR) | Gross yield | Buy Box score ↓ | Section 8 gap |
|---|---|---|---|---|---|
| 78108 | $285,900 | $2,140 | 9.0% | 0.9 | 48.7% |
| 78130 | $285,900 | $1,620 | 6.8% | 0.8 | 12.6% |
| 78124 | $285,900 | $1,370 | 5.8% | 0.7 | -4.8% |
| 78155 | $285,900 | $1,260 | 5.3% | 0.7 | -12.4% |
| 78638 | $285,900 | $1,360 | 5.7% | 0.7 | -5.5% |
| 78123 | $285,900 | $1,260 | 5.3% | 0.5 | -12.4% |
| 78670 | $285,900 | $1,670 | 7.0% | — | 16.1% |
Sort by any column. Click a ZIP for detail.
Demographics
Owner-occupied
78.5%
Census ACS
Vacancy rate
6.6%
Census ACS
Bachelor's degree +
30.9%
Census ACS
Rent burdened
40.3%
Census ACS (>30% income)
Median age
37.5
Census ACS
U.S. Census Bureau — American Community Survey 5-Year Estimates
U.S. Census Bureau — Building Permits Survey
U.S. Department of Housing and Urban Development — Fair Market Rents / Small Area Fair Market Rents (SAFMR)
Internal Revenue Service — Statistics of Income Migration Data
FEMA — National Risk Index
Last updated: April 16, 2026