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US ZIP Code Profile

ZIP Code 78124
Marion, Texas

ZIP code 78124 is in Marion, located in Guadalupe County, Texas, within the San Antonio-New Braunfels metro area. Its 2020 Census population was 6,860. The estimated median adjusted gross income per tax return is $52,594, and about 6% of filers report $200,000 or more.

2020 Population
6,860
Census ZCTA
County
Guadalupe
FIPS 48187
Median income (est.)
$52,594
IRS SOI 2022
Land Area
56.958 mi²
+ 0.022 mi² water

01Location & Geography

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

Primary CityMarion, TX
CountyGuadalupe County (FIPS 48187)
StateTexas (FIPS 48)
Metro Area (MSA)San Antonio-New Braunfels, TX Metro Area (41700)
Census Region / DivisionSouth Region · West South Central Division
Coordinates29.55727, -98.14689
Land / Water Area56.958 mi² land · 0.022 mi² water

02Income & Economics

Distribution of the 3,630 individual tax returns filed in 78124 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
24.5%
$25K–$50K
24.0%
$50K–$75K
14.6%
$75K–$100K
9.9%
$100K–$200K
20.9%
$200K+
6.1%
The $200,000+ bracket accounts for 27% of 78124's total adjusted gross income, from 6% of returns — a concentration that drives the gap between the median ($52,594) 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 78124's IRS income metrics, 2020–2022.

Median income (2021→2022)
$52,594
▲ 9.8%
Filers earning $200K+
6.1%
▲ 0.9 pt
Total filers
3,630
▲ 4.9%
GET /zipc/v2/zipcodes/78124/soi?year=… $46K 2020 $48K 2021 $53K 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 78124 ZCTA.

2000
4,728
 
2010
5,609
▲ +18.6%
2020
6,860
▲ +22.3%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number485645
City AliasesCibolo, Marion, Santa Clara

06Frequently Asked Questions

What county is ZIP code 78124 in?

ZIP code 78124 is in Guadalupe County, Texas (county FIPS code 48187).

What city is ZIP code 78124?

The primary USPS city for 78124 is Marion, TX.

What metro area (MSA) is 78124 in?

78124 is part of the San Antonio-New Braunfels, TX Metro Area (MSA code 41700).

What is the population of ZIP code 78124?

The 2020 Census population of 78124 was 6,860 residents.

What is the median income in ZIP code 78124?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78124 is about $52,594, with around 6% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.