Zip lookup · TX

78140
Nixon, Texas.

Nixon, Gonzales County, TX · San Antonio-New Braunfels, TX metro · population 3,474

What it costs per month · 78140 $1,049/mo

to buy the typical home at today's mortgage rate — +$270 (+35%) since Jan 2020.

What the home itself did
1 year
Down $8,307 -4%
$208,112$199,805 since Sep 2025
5 years
Down $54,788 -22%
$254,593$199,805 since Sep 2021

Monthly payment to buy the typical home

Home value × that month's 30-year mortgage rate, 20% down, principal and interest. This is the line households feel: prices and rates compound each other.

$500 $1,000 $1,500 $2,000 2002 2006 2010 2014 2018 2022 2026 78140 $1,049 United States $1,922
$500 $1,000 $1,500 $2,000 2002 2010 2018 2026
  • 78140$1,049
  • United States$1,922

At the last five years' pace, prices here aren't rising.

Typical home values in zip 78140 fell 4.0% over the past year — slower than the nation's +1.2%.

This zip spans 4 counties: Gonzales County, TX 67% · Wilson County, TX 27% · Guadalupe County, TX 3% · Karnes County, TX 2%

Zillow also publishes an index for the city itself: Nixon, TX — measured over the city limits, which is a different area from this zip.

Typical home value $199,805 as of Sep 2026
-4.0%year on year

Typical home value — 78140

Mid-tier homes, smoothed and seasonally adjusted.

$200,000 $250,000 $300,000 $350,000 2018 2020 2022 2024 2026 78140 $199,805 San Antonio $273,806 United States $366,157
$200,000 $250,000 $300,000 $350,000 2018 2022 2026
  • 78140$199,805
  • San Antonio$273,806
  • United States$366,157

Within 20 miles

Coordinates and population from SimpleMaps US Zips (Basic). Rent and home values from Zillow Research.