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US ZIP Code Profile

ZIP Code 78340
Bayside, Texas

ZIP code 78340 is in Bayside, located in Refugio County, Texas. Its 2020 Census population was 341. The estimated median adjusted gross income per tax return is $40,000.

2020 Population
341
Census ZCTA
County
Refugio
FIPS 48391
Median income (est.)
$40,000
IRS SOI 2022
Land Area
21.677 mi²
+ 14.726 mi² water

01Location & Geography

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

Primary CityBayside, TX
CountyRefugio County (FIPS 48391)
StateTexas (FIPS 48)
Census Region / DivisionSouth Region · West South Central Division
Coordinates28.1207, -97.19689
Land / Water Area21.677 mi² land · 14.726 mi² water

02Income & Economics

Distribution of the 180 individual tax returns filed in 78340 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
33.3%
$25K–$50K
27.8%
$50K–$75K
22.2%
$75K–$100K
0.0%
$100K–$200K
16.7%
$200K+
0.0%
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 78340's IRS income metrics, 2020–2022.

Median income (2021→2022)
$40,000
▲ 1.1%
Filers earning $200K+
0.0%
▲ 0.0 pt
Total filers
180
▼ 5.3%
GET /zipc/v2/zipcodes/78340/soi?year=… $40K 2020 $40K 2021 $40K 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 78340 ZCTA.

2000
391
 
2010
379
▼ -3.1%
2020
341
▼ -10.0%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number480595
City AliasesBayside

06Frequently Asked Questions

What county is ZIP code 78340 in?

ZIP code 78340 is in Refugio County, Texas (county FIPS code 48391).

What city is ZIP code 78340?

The primary USPS city for 78340 is Bayside, TX.

What is the population of ZIP code 78340?

The 2020 Census population of 78340 was 341 residents.

What is the median income in ZIP code 78340?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78340 is about $40,000. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.