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US ZIP Code Profile

ZIP Code 78589
San Juan, Texas

ZIP code 78589 is in San Juan, located in Hidalgo County, Texas, within the McAllen-Edinburg-Mission metro area. Its 2020 Census population was 38,987. The estimated median adjusted gross income per tax return is $29,965, and about 1% of filers report $200,000 or more.

2020 Population
38,987
Census ZCTA
County
Hidalgo
FIPS 48215
Median income (est.)
$29,965
IRS SOI 2022
Land Area
20.784 mi²
+ 0 mi² water

01Location & Geography

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

Primary CitySan Juan, TX
CountyHidalgo County (FIPS 48215)
StateTexas (FIPS 48)
Metro Area (MSA)McAllen-Edinburg-Mission, TX Metro Area (32580)
Census Region / DivisionSouth Region · West South Central Division
Coordinates26.167843, -98.15483
Land / Water Area20.784 mi² land · 0 mi² water

02Income & Economics

Distribution of the 17,490 individual tax returns filed in 78589 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
44.2%
$25K–$50K
28.9%
$50K–$75K
13.4%
$75K–$100K
6.2%
$100K–$200K
6.4%
$200K+
0.7%
The $200,000+ bracket accounts for 7% of 78589's total adjusted gross income, from 1% of returns — a concentration that drives the gap between the median ($29,965) 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 78589's IRS income metrics, 2020–2022.

Median income (2021→2022)
$29,965
▲ 10.6%
Filers earning $200K+
0.7%
▲ 0.1 pt
Total filers
17,490
▲ 0.6%
GET /zipc/v2/zipcodes/78589/soi?year=… $26K 2020 $27K 2021 $30K 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 78589 ZCTA.

2000
28,954
 
2010
38,004
▲ +31.3%
2020
38,987
▲ +2.6%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 78589. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 78589

San Juan and its immediate neighbors, sorted by distance.

3 mi
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Distance from 78589 to any ZIP

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06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number488070
City AliasesLopezville, San Juan

07Frequently Asked Questions

What county is ZIP code 78589 in?

ZIP code 78589 is in Hidalgo County, Texas (county FIPS code 48215).

What city is ZIP code 78589?

The primary USPS city for 78589 is San Juan, TX.

What metro area (MSA) is 78589 in?

78589 is part of the McAllen-Edinburg-Mission, TX Metro Area (MSA code 32580).

What is the population of ZIP code 78589?

The 2020 Census population of 78589 was 38,987 residents.

What is the median income in ZIP code 78589?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78589 is about $29,965, with around 1% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.