Get API Key →
US ZIP Code Profile

ZIP Code 78620
Dripping Springs, Texas

ZIP code 78620 is in Dripping Springs, located in Hays County, Texas, within the Austin-Round Rock metro area. Its 2020 Census population was 20,493. The estimated median adjusted gross income per tax return is $99,356, and about 25% of filers report $200,000 or more.

2020 Population
20,493
Census ZCTA
County
Hays
FIPS 48209
Median income (est.)
$99,356
IRS SOI 2022
Land Area
172.406 mi²
+ 0.396 mi² water

01Location & Geography

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

Primary CityDripping Springs, TX
CountyHays County (FIPS 48209)
StateTexas (FIPS 48)
Metro Area (MSA)Austin-Round Rock, TX Metro Area (12420)
Census Region / DivisionSouth Region · West South Central Division
Coordinates30.225607, -98.1363
Land / Water Area172.406 mi² land · 0.396 mi² water

02Income & Economics

Distribution of the 11,710 individual tax returns filed in 78620 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
18.5%
$25K–$50K
13.2%
$50K–$75K
10.2%
$75K–$100K
8.3%
$100K–$200K
24.7%
$200K+
25.1%
The $200,000+ bracket accounts for 69% of 78620's total adjusted gross income, from 25% of returns — a concentration that drives the gap between the median ($99,356) 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 78620's IRS income metrics, 2020–2022.

Median income (2021→2022)
$99,356
▲ 6.9%
Filers earning $200K+
25.1%
▲ 2.2 pt
Total filers
11,710
▲ 7.9%
GET /zipc/v2/zipcodes/78620/soi?year=… $81K 2020 $93K 2021 $99K 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 78620 ZCTA.

2000
9,689
 
2010
14,367
▲ +48.3%
2020
20,493
▲ +42.6%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number482605
City AliasesDripping Springs, Henly, Mount Sharp, Dripping Spgs

06Frequently Asked Questions

What county is ZIP code 78620 in?

ZIP code 78620 is in Hays County, Texas (county FIPS code 48209).

What city is ZIP code 78620?

The primary USPS city for 78620 is Dripping Springs, TX.

What metro area (MSA) is 78620 in?

78620 is part of the Austin-Round Rock, TX Metro Area (MSA code 12420).

What is the population of ZIP code 78620?

The 2020 Census population of 78620 was 20,493 residents.

What is the median income in ZIP code 78620?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78620 is about $99,356, with around 25% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.