Get API Key →
US ZIP Code Profile

ZIP Code 78070
Spring Branch, Texas

ZIP code 78070 is in Spring Branch, located in Comal County, Texas, within the San Antonio-New Braunfels metro area. Its 2020 Census population was 20,618. The estimated median adjusted gross income per tax return is $71,058, and about 15% of filers report $200,000 or more.

2020 Population
20,618
Census ZCTA
County
Comal
FIPS 48091
Median income (est.)
$71,058
IRS SOI 2022
Land Area
137.709 mi²
+ 1.417 mi² water

01Location & Geography

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

Primary CitySpring Branch, TX
CountyComal County (FIPS 48091)
StateTexas (FIPS 48)
Metro Area (MSA)San Antonio-New Braunfels, TX Metro Area (41700)
Census Region / DivisionSouth Region · West South Central Division
Coordinates29.897839, -98.40311
Land / Water Area137.709 mi² land · 1.417 mi² water

02Income & Economics

Distribution of the 10,930 individual tax returns filed in 78070 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
23.0%
$25K–$50K
17.0%
$50K–$75K
11.9%
$75K–$100K
9.2%
$100K–$200K
23.5%
$200K+
15.4%
The $200,000+ bracket accounts for 57% of 78070's total adjusted gross income, from 15% of returns — a concentration that drives the gap between the median ($71,058) 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 78070's IRS income metrics, 2020–2022.

Median income (2021→2022)
$71,058
▲ 3.3%
Filers earning $200K+
15.4%
▲ 1.0 pt
Total filers
10,930
▲ 3.7%
GET /zipc/v2/zipcodes/78070/soi?year=… $62K 2020 $69K 2021 $71K 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 78070 ZCTA.

2000
7,283
 
2010
14,618
▲ +100.7%
2020
20,618
▲ +41.0%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number488570
City AliasesBulverde, Spring Branch

06Frequently Asked Questions

What county is ZIP code 78070 in?

ZIP code 78070 is in Comal County, Texas (county FIPS code 48091).

What city is ZIP code 78070?

The primary USPS city for 78070 is Spring Branch, TX.

What metro area (MSA) is 78070 in?

78070 is part of the San Antonio-New Braunfels, TX Metro Area (MSA code 41700).

What is the population of ZIP code 78070?

The 2020 Census population of 78070 was 20,618 residents.

What is the median income in ZIP code 78070?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78070 is about $71,058, with around 15% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.