Get API Key →
US ZIP Code Profile

ZIP Code 78384
San Diego, Texas

ZIP code 78384 is in San Diego, located in Duval County, Texas. Its 2020 Census population was 5,653. The estimated median adjusted gross income per tax return is $28,770.

2020 Population
5,653
Census ZCTA
County
Duval
FIPS 48131
Median income (est.)
$28,770
IRS SOI 2022
Land Area
455.961 mi²
+ 1.52 mi² water

01Location & Geography

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

Primary CitySan Diego, TX
CountyDuval County (FIPS 48131)
StateTexas (FIPS 48)
Census Region / DivisionSouth Region · West South Central Division
Coordinates27.849558, -98.38577
Land / Water Area455.961 mi² land · 1.52 mi² water

02Income & Economics

Distribution of the 2,270 individual tax returns filed in 78384 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
45.8%
$25K–$50K
27.8%
$50K–$75K
11.5%
$75K–$100K
6.6%
$100K–$200K
8.4%
$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 78384's IRS income metrics, 2020–2022.

Median income (2021→2022)
$28,770
▲ 12.3%
Filers earning $200K+
0.0%
▲ 0.0 pt
Total filers
2,270
▲ 0.9%
GET /zipc/v2/zipcodes/78384/soi?year=… $26K 2020 $26K 2021 $29K 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 78384 ZCTA.

2000
10,689
 
2010
6,640
▼ -37.9%
2020
5,653
▼ -14.9%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number488020
City AliasesRosita, San Diego

06Frequently Asked Questions

What county is ZIP code 78384 in?

ZIP code 78384 is in Duval County, Texas (county FIPS code 48131).

What city is ZIP code 78384?

The primary USPS city for 78384 is San Diego, TX.

What is the population of ZIP code 78384?

The 2020 Census population of 78384 was 5,653 residents.

What is the median income in ZIP code 78384?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78384 is about $28,770. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.