US ZIP Code
78588

San Isidro, TX

Starr County  ·  Texas

● Active
👥 246 Population ↑ 85% since 2019
💰 $86,458 Median HH Income
▲ 13% above avg ↑ 136% since 2019
🎂 41.5 Median Age ↑ 3% since 2019
🎓 39.5% College Grads
≈ Avg
📊 0.0% Unemployment
▼ 100% below avg ↓ 100% since 2019
ZIP Code Details
ZIP Code78588
CitySan Isidro
StateTexas (TX)
CountyStarr County
Area Code956
Elevation247 ft
Latitude26.73968
Longitude-98.39852
TimezoneChicago (DST)
FIPS48427
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 50.0% (123) Female 50.0% (123) ♀

Race & Ethnicity

White: 10.2%Hispanic: 89.8%Race
White10.2%
Hispanic89.8%

Age Breakdown

Under 5
1%
5–17
33%
18–24
9%
25–44
13%
45–64
29%
65+
1%

Key Indicators

Median Age41.5 yrs ↑ 3% since 2019
Avg Household Size3.90
Below Poverty0.0% ▼ 100% below avg
College Grads39.5% ≈ Avg
Unemployment0.0% ▼ 100% below avg
HS Graduate17 (13.7%)
Some College42 (33.9%)
Associates16 (12.9%)
Bachelors10 (8.1%)
Graduate Degree39 (31.5%)

Education

HS Grad: 13.7%Some College: 33.9%Associates: 12.9%Bachelors: 8.1%Graduate: 31.5%Edu
HS Grad13.7%
Some College33.9%
Associates12.9%
Bachelors8.1%
Graduate31.5%
Housing & Income

Housing Tenure

Owner: 74.6%Renter: 25.4%Tenure
Owner74.6%
Renter25.4%

Home Value Distribution

Under $50k
55%
$50k–100k
30%
$300k–500k
15%

Financials

Median HH Income$86,458 ▲ 13% above avg ↑ 136% since 2019
Median Rent$530/mo
Total Units125
Vacant Units62
Avg HH Size3.90

Income Distribution

$25k–50k
37%
$50k–75k
8%
$75k–100k
10%
$100k–150k
32%
$150k–200k
14%
Employment & Commute

How People Get to Work

Drove Alone
73%
Walked
27%

Commute Time

Under 15 min
72%
15–30 min
1%
30–45 min
3%
Over 45 min
24%
Housing Stock

Year Built

1940s–1950s
15%
1960s–1970s
2%
1980s–1990s
32%
2000+
51%

Summary

Total Units125
Vacant62
Owner Occupied74.6%
Renter Occupied25.4%
Avg HH Size3.90
Frequently Asked Questions
ZIP code 78588 is in San Isidro, TX, in Starr County.
ZIP code 78588 is located in Texas (TX).
ZIP code 78588 is in Starr County, TX.
ZIP 78588 observes the Chicago timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 78588 is 246 people (ACS 2023).
The median household income in ZIP code 78588 is $86,458 (ACS 2023).
Home value data not available.
About ZIP Code 78588

ZIP code 78588 is located in San Isidro, Texas, within Starr County. With a population of 246, this is a sparsely populated ZIP code with a middle-aged community — the median age is 41.5 years. Economically, 78588 is a middle-income ZIP code: the median household income of $86,458 is near the national average.

Renters can expect to pay around $530 per month in median rent. Homeownership is strong here — 74.6% of occupied units are owner-occupied, suggesting an established, stable residential community.

The population of 78588 is primarily Hispanic (89.84%). Residents are moderately educated — 39.5% hold a bachelor's degree or higher, which is near the national average. Household income has grown by 136% since 2019.

Overall, ZIP code 78588 in San Isidro, TX is characterized as middle-income, moderately educated, a middle-aged community, and predominantly owner-occupied.