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US ZIP Code Profile

ZIP Code 78617
Del Valle, Texas

ZIP code 78617 is in Del Valle, located in Travis County, Texas, within the Austin-Round Rock metro area. Its 2020 Census population was 28,832. The estimated median adjusted gross income per tax return is $38,862, and about 1% of filers report $200,000 or more.

2020 Population
28,832
Census ZCTA
County
Travis
FIPS 48453
Median income (est.)
$38,862
IRS SOI 2022
Land Area
69.454 mi²
+ 0.432 mi² water

01Location & Geography

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

Primary CityDel Valle, TX
CountyTravis County (FIPS 48453)
StateTexas (FIPS 48)
Metro Area (MSA)Austin-Round Rock, TX Metro Area (12420)
Census Region / DivisionSouth Region · West South Central Division
Coordinates30.148535, -97.59303
Land / Water Area69.454 mi² land · 0.432 mi² water

02Income & Economics

Distribution of the 12,480 individual tax returns filed in 78617 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
31.6%
$25K–$50K
33.1%
$50K–$75K
17.3%
$75K–$100K
8.3%
$100K–$200K
8.6%
$200K+
1.0%
The $200,000+ bracket accounts for 8% of 78617's total adjusted gross income, from 1% of returns — a concentration that drives the gap between the median ($38,862) 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 78617's IRS income metrics, 2020–2022.

Median income (2021→2022)
$38,862
▲ 8.8%
Filers earning $200K+
1.0%
▲ 0.1 pt
Total filers
12,480
▲ 4.0%
GET /zipc/v2/zipcodes/78617/soi?year=… $34K 2020 $36K 2021 $39K 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 78617 ZCTA.

2000
15,227
 
2010
22,210
▲ +45.9%
2020
28,832
▲ +29.8%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number482370
City AliasesDel Valle, Elroy, Garfield

06Frequently Asked Questions

What county is ZIP code 78617 in?

ZIP code 78617 is in Travis County, Texas (county FIPS code 48453).

What city is ZIP code 78617?

The primary USPS city for 78617 is Del Valle, TX.

What metro area (MSA) is 78617 in?

78617 is part of the Austin-Round Rock, TX Metro Area (MSA code 12420).

What is the population of ZIP code 78617?

The 2020 Census population of 78617 was 28,832 residents.

What is the median income in ZIP code 78617?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78617 is about $38,862, with around 1% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.