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US ZIP Code Profile

ZIP Code 78934
Columbus, Texas

ZIP code 78934 is in Columbus, located in Colorado County, Texas. Its 2020 Census population was 6,770. The estimated median adjusted gross income per tax return is $46,591, and about 6% of filers report $200,000 or more.

2020 Population
6,770
Census ZCTA
County
Colorado
FIPS 48089
Median income (est.)
$46,591
IRS SOI 2022
Land Area
191.878 mi²
+ 2.911 mi² water

01Location & Geography

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

Primary CityColumbus, TX
CountyColorado County (FIPS 48089)
StateTexas (FIPS 48)
Census Region / DivisionSouth Region · West South Central Division
Coordinates29.693466, -96.5577
Land / Water Area191.878 mi² land · 2.911 mi² water

02Income & Economics

Distribution of the 3,270 individual tax returns filed in 78934 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
29.7%
$25K–$50K
23.5%
$50K–$75K
14.4%
$75K–$100K
9.5%
$100K–$200K
16.5%
$200K+
6.4%
The $200,000+ bracket accounts for 37% of 78934's total adjusted gross income, from 6% of returns — a concentration that drives the gap between the median ($46,591) 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 78934's IRS income metrics, 2020–2022.

Median income (2021→2022)
$46,591
▲ 5.9%
Filers earning $200K+
6.4%
▲ 0.5 pt
Total filers
3,270
▲ 2.5%
GET /zipc/v2/zipcodes/78934/soi?year=… $41K 2020 $44K 2021 $47K 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 78934 ZCTA.

2000
7,111
 
2010
6,712
▼ -5.6%
2020
6,770
▲ +0.9%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number481905
City AliasesColumbus, Hillcrest

06Frequently Asked Questions

What county is ZIP code 78934 in?

ZIP code 78934 is in Colorado County, Texas (county FIPS code 48089).

What city is ZIP code 78934?

The primary USPS city for 78934 is Columbus, TX.

What is the population of ZIP code 78934?

The 2020 Census population of 78934 was 6,770 residents.

What is the median income in ZIP code 78934?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78934 is about $46,591, with around 6% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.