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US ZIP Code Profile

ZIP Code 78636
Johnson City, Texas

ZIP code 78636 is in Johnson City, located in Blanco County, Texas. Its 2020 Census population was 3,894. The estimated median adjusted gross income per tax return is $53,879, and about 11% of filers report $200,000 or more.

2020 Population
3,894
Census ZCTA
County
Blanco
FIPS 48031
Median income (est.)
$53,879
IRS SOI 2022
Land Area
349.639 mi²
+ 2.77 mi² water

01Location & Geography

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

Primary CityJohnson City, TX
CountyBlanco County (FIPS 48031)
StateTexas (FIPS 48)
Census Region / DivisionSouth Region · West South Central Division
Coordinates30.316898, -98.424995
Land / Water Area349.639 mi² land · 2.77 mi² water

02Income & Economics

Distribution of the 2,070 individual tax returns filed in 78636 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
25.6%
$25K–$50K
22.2%
$50K–$75K
14.0%
$75K–$100K
9.2%
$100K–$200K
18.4%
$200K+
10.6%
The $200,000+ bracket accounts for 54% of 78636's total adjusted gross income, from 11% of returns — a concentration that drives the gap between the median ($53,879) 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 78636's IRS income metrics, 2020–2022.

Median income (2021→2022)
$53,879
▲ 2.2%
Filers earning $200K+
10.6%
▼ 0.1 pt
Total filers
2,070
▲ 1.0%
GET /zipc/v2/zipcodes/78636/soi?year=… $47K 2020 $53K 2021 $54K 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 78636 ZCTA.

2000
3,317
 
2010
3,749
▲ +13.0%
2020
3,894
▲ +3.9%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number484455
City AliasesJohnson City, Cypress Mill

06Frequently Asked Questions

What county is ZIP code 78636 in?

ZIP code 78636 is in Blanco County, Texas (county FIPS code 48031).

What city is ZIP code 78636?

The primary USPS city for 78636 is Johnson City, TX.

What is the population of ZIP code 78636?

The 2020 Census population of 78636 was 3,894 residents.

What is the median income in ZIP code 78636?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78636 is about $53,879, with around 11% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.