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US ZIP Code Profile

ZIP Code 77340
Huntsville, Texas

ZIP code 77340 is in Huntsville, located in Walker County, Texas, within the Huntsville metro area. Its 2020 Census population was 35,020. The estimated median adjusted gross income per tax return is $40,405, and about 5% of filers report $200,000 or more.

2020 Population
35,020
Census ZCTA
County
Walker
FIPS 48471
Median income (est.)
$40,405
IRS SOI 2022
Land Area
217.63 mi²
+ 2.735 mi² water

01Location & Geography

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

Primary CityHuntsville, TX
CountyWalker County (FIPS 48471)
StateTexas (FIPS 48)
Metro Area (MSA)Huntsville, TX Micro Area (26660)
Census Region / DivisionSouth Region · West South Central Division
Coordinates30.640259, -95.5384
Land / Water Area217.63 mi² land · 2.735 mi² water

02Income & Economics

Distribution of the 11,400 individual tax returns filed in 77340 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
34.6%
$25K–$50K
24.9%
$50K–$75K
13.0%
$75K–$100K
8.3%
$100K–$200K
14.0%
$200K+
5.1%
The $200,000+ bracket accounts for 30% of 77340's total adjusted gross income, from 5% of returns — a concentration that drives the gap between the median ($40,405) 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 77340's IRS income metrics, 2020–2022.

Median income (2021→2022)
$40,405
▲ 8.8%
Filers earning $200K+
5.1%
▲ 0.6 pt
Total filers
11,400
▲ 2.2%
GET /zipc/v2/zipcodes/77340/soi?year=… $34K 2020 $37K 2021 $40K 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 77340 ZCTA.

2000
24,293
 
2010
29,809
▲ +22.7%
2020
35,020
▲ +17.5%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number484215
City AliasesCrabbs Prairie, Huntsville, Phelps

06Frequently Asked Questions

What county is ZIP code 77340 in?

ZIP code 77340 is in Walker County, Texas (county FIPS code 48471).

What city is ZIP code 77340?

The primary USPS city for 77340 is Huntsville, TX.

What metro area (MSA) is 77340 in?

77340 is part of the Huntsville, TX Micro Area (MSA code 26660).

What is the population of ZIP code 77340?

The 2020 Census population of 77340 was 35,020 residents.

What is the median income in ZIP code 77340?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 77340 is about $40,405, 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.