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US ZIP Code Profile

ZIP Code 78113
Falls City, Texas

ZIP code 78113 is in Falls City, located in Karnes County, Texas. Its 2020 Census population was 2,253. The estimated median adjusted gross income per tax return is $77,679, and about 17% of filers report $200,000 or more.

2020 Population
2,253
Census ZCTA
County
Karnes
FIPS 48255
Median income (est.)
$77,679
IRS SOI 2022
Land Area
281.13 mi²
+ 2.396 mi² water

01Location & Geography

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

Primary CityFalls City, TX
CountyKarnes County (FIPS 48255)
StateTexas (FIPS 48)
Census Region / DivisionSouth Region · West South Central Division
Coordinates28.867033, -98.240425
Land / Water Area281.13 mi² land · 2.396 mi² water

02Income & Economics

Distribution of the 1,190 individual tax returns filed in 78113 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
20.2%
$25K–$50K
17.6%
$50K–$75K
10.9%
$75K–$100K
11.8%
$100K–$200K
22.7%
$200K+
16.8%
The $200,000+ bracket accounts for 60% of 78113's total adjusted gross income, from 17% of returns — a concentration that drives the gap between the median ($77,679) 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 78113's IRS income metrics, 2020–2022.

Median income (2021→2022)
$77,679
▲ 12.2%
Filers earning $200K+
16.8%
▲ 3.0 pt
Total filers
1,190
▲ 2.6%
GET /zipc/v2/zipcodes/78113/soi?year=… $62K 2020 $69K 2021 $78K 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 78113 ZCTA.

2000
1,893
 
2010
2,435
▲ +28.6%
2020
2,253
▼ -7.5%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number483020
City AliasesCestohowa, Falls City, Pawelekville, Mccoy

06Frequently Asked Questions

What county is ZIP code 78113 in?

ZIP code 78113 is in Karnes County, Texas (county FIPS code 48255).

What city is ZIP code 78113?

The primary USPS city for 78113 is Falls City, TX.

What is the population of ZIP code 78113?

The 2020 Census population of 78113 was 2,253 residents.

What is the median income in ZIP code 78113?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78113 is about $77,679, with around 17% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.