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US ZIP Code Profile

ZIP Code 78629
Gonzales, Texas

ZIP code 78629 is in Gonzales, located in Gonzales County, Texas. Its 2020 Census population was 12,046. The estimated median adjusted gross income per tax return is $41,592, and about 5% of filers report $200,000 or more.

2020 Population
12,046
Census ZCTA
County
Gonzales
FIPS 48177
Median income (est.)
$41,592
IRS SOI 2022
Land Area
425.37 mi²
+ 2.165 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityGonzales, TX
CountyGonzales County (FIPS 48177)
StateTexas (FIPS 48)
Census Region / DivisionSouth Region · West South Central Division
Coordinates29.476843, -97.44894
Land / Water Area425.37 mi² land · 2.165 mi² water

02Income & Economics

Distribution of the 5,690 individual tax returns filed in 78629 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
30.4%
$25K–$50K
29.5%
$50K–$75K
15.1%
$75K–$100K
8.8%
$100K–$200K
11.1%
$200K+
5.1%
The $200,000+ bracket accounts for 38% of 78629's total adjusted gross income, from 5% of returns — a concentration that drives the gap between the median ($41,592) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 78629's IRS income metrics, 2020–2022.

Median income (2021→2022)
$41,592
▲ 9.1%
Filers earning $200K+
5.1%
▲ 0.7 pt
Total filers
5,690
▲ 0.4%
GET /zipc/v2/zipcodes/78629/soi?year=… $37K 2020 $38K 2021 $42K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 78629 ZCTA.

2000
11,255
 
2010
11,887
▲ +5.6%
2020
12,046
▲ +1.3%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number483625
City AliasesDilworth, Gonzales, Hamon, Maurin, Nickel, Oak Forest, Summerville

06Frequently Asked Questions

What county is ZIP code 78629 in?

ZIP code 78629 is in Gonzales County, Texas (county FIPS code 48177).

What city is ZIP code 78629?

The primary USPS city for 78629 is Gonzales, TX.

What is the population of ZIP code 78629?

The 2020 Census population of 78629 was 12,046 residents.

What is the median income in ZIP code 78629?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78629 is about $41,592, with around 5% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.