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US ZIP Code Profile

ZIP Code 78605
Bertram, Texas

ZIP code 78605 is in Bertram, located in Burnet County, Texas. Its 2020 Census population was 6,246. The estimated median adjusted gross income per tax return is $56,122, and about 7% of filers report $200,000 or more.

2020 Population
6,246
Census ZCTA
County
Burnet
FIPS 48053
Median income (est.)
$56,122
IRS SOI 2022
Land Area
163.533 mi²
+ 0.397 mi² water

01Location & Geography

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

Primary CityBertram, TX
CountyBurnet County (FIPS 48053)
StateTexas (FIPS 48)
Census Region / DivisionSouth Region · West South Central Division
Coordinates30.773294, -98.04518
Land / Water Area163.533 mi² land · 0.397 mi² water

02Income & Economics

Distribution of the 3,360 individual tax returns filed in 78605 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
24.4%
$25K–$50K
22.0%
$50K–$75K
14.6%
$75K–$100K
11.3%
$100K–$200K
20.2%
$200K+
7.4%
The $200,000+ bracket accounts for 41% of 78605's total adjusted gross income, from 7% of returns — a concentration that drives the gap between the median ($56,122) 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 78605's IRS income metrics, 2020–2022.

Median income (2021→2022)
$56,122
▲ 7.8%
Filers earning $200K+
7.4%
▲ 0.6 pt
Total filers
3,360
▲ 5.0%
GET /zipc/v2/zipcodes/78605/soi?year=… $48K 2020 $52K 2021 $56K 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 78605 ZCTA.

2000
3,558
 
2010
4,952
▲ +39.2%
2020
6,246
▲ +26.1%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number480735
City AliasesBertram, Joppa, Mahomet, Oatmeal, Tamega

06Frequently Asked Questions

What county is ZIP code 78605 in?

ZIP code 78605 is in Burnet County, Texas (county FIPS code 48053).

What city is ZIP code 78605?

The primary USPS city for 78605 is Bertram, TX.

What is the population of ZIP code 78605?

The 2020 Census population of 78605 was 6,246 residents.

What is the median income in ZIP code 78605?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78605 is about $56,122, with around 7% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.