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US ZIP Code Profile

ZIP Code 78101
Adkins, Texas

ZIP code 78101 is in Adkins, located in Bexar County, Texas, within the San Antonio-New Braunfels metro area. Its 2020 Census population was 9,104. The estimated median adjusted gross income per tax return is $56,548, and about 8% of filers report $200,000 or more.

2020 Population
9,104
Census ZCTA
County
Bexar
FIPS 48029
Median income (est.)
$56,548
IRS SOI 2022
Land Area
51.237 mi²
+ 0.388 mi² water

01Location & Geography

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

Primary CityAdkins, TX
CountyBexar County (FIPS 48029)
StateTexas (FIPS 48)
Metro Area (MSA)San Antonio-New Braunfels, TX Metro Area (41700)
Census Region / DivisionSouth Region · West South Central Division
Coordinates29.353554, -98.23831
Land / Water Area51.237 mi² land · 0.388 mi² water

02Income & Economics

Distribution of the 4,490 individual tax returns filed in 78101 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
24.3%
$25K–$50K
22.1%
$50K–$75K
14.0%
$75K–$100K
11.1%
$100K–$200K
20.3%
$200K+
8.2%
The $200,000+ bracket accounts for 35% of 78101's total adjusted gross income, from 8% of returns — a concentration that drives the gap between the median ($56,548) 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 78101's IRS income metrics, 2020–2022.

Median income (2021→2022)
$56,548
▲ 5.9%
Filers earning $200K+
8.2%
▲ 1.6 pt
Total filers
4,490
▲ 2.3%
GET /zipc/v2/zipcodes/78101/soi?year=… $49K 2020 $53K 2021 $57K 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 78101 ZCTA.

2000
6,203
 
2010
7,898
▲ +27.3%
2020
9,104
▲ +15.3%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number480060
City AliasesAdkins

06Frequently Asked Questions

What county is ZIP code 78101 in?

ZIP code 78101 is in Bexar County, Texas (county FIPS code 48029).

What city is ZIP code 78101?

The primary USPS city for 78101 is Adkins, TX.

What metro area (MSA) is 78101 in?

78101 is part of the San Antonio-New Braunfels, TX Metro Area (MSA code 41700).

What is the population of ZIP code 78101?

The 2020 Census population of 78101 was 9,104 residents.

What is the median income in ZIP code 78101?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78101 is about $56,548, with around 8% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.