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US ZIP Code Profile

ZIP Code 77320
Huntsville, Texas

ZIP code 77320 is in Huntsville, located in Walker County, Texas, within the Huntsville metro area. Its 2020 Census population was 37,325. The estimated median adjusted gross income per tax return is $40,325, and about 3% of filers report $200,000 or more.

2020 Population
37,325
Census ZCTA
County
Walker
FIPS 48471
Median income (est.)
$40,325
IRS SOI 2022
Land Area
317.909 mi²
+ 17.272 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
Coordinates30.804665, -95.55087
Land / Water Area317.909 mi² land · 17.272 mi² water

02Income & Economics

Distribution of the 10,900 individual tax returns filed in 77320 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
33.6%
$25K–$50K
26.8%
$50K–$75K
15.1%
$75K–$100K
9.3%
$100K–$200K
12.2%
$200K+
3.0%
The $200,000+ bracket accounts for 20% of 77320's total adjusted gross income, from 3% of returns — a concentration that drives the gap between the median ($40,325) 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 77320's IRS income metrics, 2020–2022.

Median income (2021→2022)
$40,325
▲ 9.1%
Filers earning $200K+
3.0%
▲ 0.3 pt
Total filers
10,900
▲ 2.1%
GET /zipc/v2/zipcodes/77320/soi?year=… $35K 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 77320 ZCTA.

2000
32,546
 
2010
33,678
▲ +3.5%
2020
37,325
▲ +10.8%

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 AliasesHuntsville

06Frequently Asked Questions

What county is ZIP code 77320 in?

ZIP code 77320 is in Walker County, Texas (county FIPS code 48471).

What city is ZIP code 77320?

The primary USPS city for 77320 is Huntsville, TX.

What metro area (MSA) is 77320 in?

77320 is part of the Huntsville, TX Micro Area (MSA code 26660).

What is the population of ZIP code 77320?

The 2020 Census population of 77320 was 37,325 residents.

What is the median income in ZIP code 77320?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 77320 is about $40,325, with around 3% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.