Zip code 78588: San Isidro, Texas

Q: What city is zip code 78588?

78588 is assigned to San Isidro, Texas. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 78588 in?

78588 is in Starr County, Texas.

Q: What is the population of 78588?

About 289 people live in 78588, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 78588?

The median household income in 78588 is $94,821.

Q: What zip codes are near 78588?

The closest zip codes to 78588 are 78536, 78563, 78591, 78353, 78541.

Residential delivery areaStarr CountyCentral Time

Population

289

Small sample: rough estimates

Median household income

$95K

U.S. $81K

Median home value

$53K

U.S. $333K

Median rent

$520/mo

U.S. $1,413

Median age

41.2

U.S. 38.9

Land area

37 sq mi

8 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 78588

78588 is a rural zip code in San Isidro, Texas (Starr County), covering 37 sq mi of land. About 289 people live here, or 8 per square mile. The median resident is 41.2 years old, compared with 38.9 nationally. With so few residents, the Census figures below are rough estimates with wide margins of error.

The median household earns $94,821 a year, 17% above the national median of $80,734. 0% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $52,800, or 0.6 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 66% of occupied homes are lived in by their owners, and renters pay a median of $520 a month.

29% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 18.5 minutes each way, and 1% of workers work from home. The most common jobs among working residents are in education; management; and transportation and moving goods. 84% of households speak a language other than English at home, most often Spanish.

How 78588 compares

Sorted from highest to lowest national percentile

Only about 289 people live here, so these survey estimates have wide margins of error.

Housing vacancy45.1%
99th
U.S. 10.1% · TX 9.4%60th of 1,794 in TX
Government workers51.9%
99th
U.S. 14.5% · TX 14.1%20th of 1,810 in TX
Residents under 1831.1%
97th
U.S. 22% · TX 25%188th of 1,818 in TX
Median household income$94,821
67th
U.S. $80,734 · TX $78,476332nd of 1,712 in TX
Median earnings per worker$54,722
67th
U.S. $49,666 · TX $47,575393rd of 1,794 in TX
Median age41.2
66th
U.S. 38.9 · TX 35.6613th of 1,817 in TX
Bachelor's degree or higher28.8%
43rd
U.S. 35.7% · TX 33.8%582nd of 1,811 in TX
Homeownership rate65.7%
43rd
U.S. 65.2% · TX 62.6%1,246th of 1,792 in TX
Foreign-born residents6.9%
38th
U.S. 14.1% · TX 17.6%1,042nd of 1,818 in TX
Residents 65 and older14.2%
32nd
U.S. 17.2% · TX 13.4%1,102nd of 1,818 in TX
Diversity index20.2
13th
U.S. 61.4 · TX 67.11,615th of 1,818 in TX
Uninsured rate2.8%
11th
StrengthU.S. 8.4% · TX 17.1%1,741st of 1,808 in TX
Per capita income$25,903
10th
WeaknessU.S. $44,673 · TX $40,7521,443rd of 1,813 in TX
Average commute18.5 min
7th
StrengthU.S. 26.4 min · TX 26.7 min1,535th of 1,738 in TX
Healthcare workers5.8%
7th
U.S. 9.7% · TX 8.6%1,325th of 1,810 in TX
Broadband access79.1%
4th
WeaknessU.S. 91% · TX 91.4%1,534th of 1,792 in TX
Population289
1st
U.S. 334,922,499 · TX 30,188,4241,687th of 1,818 in TX
Population density8/sq mi
1st
U.S. 95/sq mi · TX 116/sq mi1,567th of 1,818 in TX
Median home value$52,800
1st
U.S. $332,700 · TX $283,8001,665th of 1,679 in TX
Median gross rent$520
1st
U.S. $1,413 · TX $1,4031,490th of 1,511 in TX
Poverty rate0%
1st
StrengthU.S. 12.5% · TX 13.8%1,790th of 1,794 in TX
Work from home1%
1st
U.S. 15.1% · TX 14.4%1,651st of 1,810 in TX
Unemployment rate0%
1st
StrengthU.S. 5.2% · TX 5.3%1,781st of 1,810 in TX
Veterans1%
1st
U.S. 6.2% · TX 6.2%1,737th of 1,818 in TX
Rent-burdened renters0%
1st
StrengthU.S. 51.1% · TX 51.7%1,673rd of 1,692 in TX
Tech workers0%
1st
U.S. 3.8% · TX 3.8%1,740th of 1,810 in TX
Self-employed workers2.9%
1st
U.S. 10% · TX 10.5%1,697th of 1,810 in TX
Income inequality (Gini)0.292
1st
StrengthU.S. 0.483 · TX 0.4781,722nd of 1,785 in TX

Measure	78588	Starr	TX	U.S.	National percentile	Rank in TX
Housing vacancy	45.1%	17.2%	9.4%	10.1%	99th	60th of 1,794
Government workers	51.9%	26.8%	14.1%	14.5%	99th	20th of 1,810
Residents under 18	31.1%	32.5%	25%	22%	97th	188th of 1,818
Median household income	$94,821	$37,639	$78,476	$80,734	67th	332nd of 1,712
Median earnings per worker	$54,722	$25,906	$47,575	$49,666	67th	393rd of 1,794
Median age	41.2	29.4	35.6	38.9	66th	613th of 1,817
Bachelor's degree or higher	28.8%	13.6%	33.8%	35.7%	43rd	582nd of 1,811
Homeownership rate	65.7%	69.5%	62.6%	65.2%	43rd	1,246th of 1,792
Foreign-born residents	6.9%	27.2%	17.6%	14.1%	38th	1,042nd of 1,818
Residents 65 and older	14.2%	11.4%	13.4%	17.2%	32nd	1,102nd of 1,818
Diversity index	20.2	5.5	67.1	61.4	13th	1,615th of 1,818
Uninsured rateStrength	2.8%	28.9%	17.1%	8.4%	11th	1,741st of 1,808
Per capita incomeWeakness	$25,903	$18,829	$40,752	$44,673	10th	1,443rd of 1,813
Average commuteStrength	18.5 min	22.6 min	26.7 min	26.4 min	7th	1,535th of 1,738
Healthcare workers	5.8%	14%	8.6%	9.7%	7th	1,325th of 1,810
Broadband accessWeakness	79.1%	78.6%	91.4%	91%	4th	1,534th of 1,792
Population	289	66,067	30,188,424	334,922,499	1st	1,687th of 1,818
Population density	8/sq mi	54/sq mi	116/sq mi	95/sq mi	1st	1,567th of 1,818
Median home value	$52,800	$95,100	$283,800	$332,700	1st	1,665th of 1,679
Median gross rent	$520	$726	$1,403	$1,413	1st	1,490th of 1,511
Poverty rateStrength	0%	33.5%	13.8%	12.5%	1st	1,790th of 1,794
Work from home	1%	9.3%	14.4%	15.1%	1st	1,651st of 1,810
Unemployment rateStrength	0%	10.4%	5.3%	5.2%	1st	1,781st of 1,810
Veterans	1%	2%	6.2%	6.2%	1st	1,737th of 1,818
Rent-burdened rentersStrength	0%	55.8%	51.7%	51.1%	1st	1,673rd of 1,692
Tech workers	0%	0.2%	3.8%	3.8%	1st	1,740th of 1,810
Self-employed workers	2.9%	13.1%	10.5%	10%	1st	1,697th of 1,810
Income inequality (Gini)Strength	0.292	0.533	0.478	0.483	1st	1,722nd of 1,785

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

30%

5–17

12%

18–24

25–34

10%

35–44

23%

45–54

55–64

65–74

12%

75+

Median age

41.2

Under 18

31.1%

65 and over

14.2%

Race and ethnicity

White11%
Black0%
Hispanic89%
Asian0%
Native American0%
Pacific Islander0%
Other0%
Multiracial0%

Diversity index

20.2

U.S. 61.4

Foreign-born

6.9%

U.S. 14.1%

Born in state

91.7%

Language spoken at home (households)

English only

16%

Spanish

84%

Other Indo-European

Asian / Pacific

Other

Households

Households: 67
Average household size: 4.3
Family households: 91%
Married couples: 58.2%
Living alone: 3%
Veterans (of adults): 1%
Male / female: 49% / 51%

Income and poverty

Household income distribution

<$25k

$25–50k

24%

$50–75k

13%

$75–100k

15%

$100–150k

33%

$150–200k

15%

$200k+

Median household income

78588

$94,821

Starr Co.

$37,639

Texas

$78,476

United States

$80,734

Per capita income

$25,903

U.S. $44,673

Poverty rate

U.S. 12.5%

Households earning $150K+

14.9%

U.S. 23%

Income inequality (Gini)

0.292

U.S. 0.483

Housing

Median home value

78588

$52,800

Starr Co.

$95,100

Texas

$283,800

United States

$332,700

Median gross rent

78588

$520

Starr Co.

$726

Texas

$1,403

United States

$1,413

Types of housing

Single-family

80%

2–4 units

5–19 units

20+ units

Mobile home

17%

Boat, RV, van

Housing units: 122
Owner-occupied: 65.7%
Vacant: 45.1%
Median year built: 1998
Median rooms: 5.3
Renters paying 30%+ of income: 0%
Renters paying 50%+ of income: 0%
Home value to income: 0.6× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

71%

Carpooled

18%

Transit

Walked

10%

Bicycle

Worked from home

Other

Commute time (one way)

<10 min

65%

10–19

12%

20–29

30–44

45–59

60+

17%

Average commute

18.5 min

U.S. 26.4 min

Unemployment

U.S. 5.2%

In labor force

49.8%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Education

33%

Management

22%

Transportation and moving

14%

Production

10%

Police and fire

Healthcare

Food service

Business and finance

Office and admin

Construction and repair

Computer and math

Engineering and science

Legal and social services

Arts, media and sports

Cleaning and personal care

Sales

Farming, fishing and forestry

Industries

Education

42%

Agriculture and mining

14%

Transportation, warehousing and utilities

11%

Retail

Public administration

Health care and social assistance

Restaurants and hotels

Manufacturing

Construction

Admin, support and management

Wholesale

Professional and technical services

Finance, insurance and real estate

Other services

Information

Arts and recreation

Median earnings per worker

$54,722

U.S. $49,666

Self-employed

2.9%

U.S. 10%

Government workers

51.9%

U.S. 14.5%

Nonprofit workers

1.9%

U.S. 8.8%

Median earnings by type of work

Type of work	78588	U.S.
Management, business, science and arts	$66,103	$74,888
Service	$66,250	$26,804
Sales and office	—	$40,476
Construction and maintenance	—	$49,199
Production and transportation	$43,125	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

20%

High school

Some college

39%

Associate's

Bachelor's

10%

Graduate

18%

High school graduate or higher: 79.8%
Bachelor's degree or higher: 28.8%
Graduate or professional degree: 18.4%
Households with broadband: 79.1%
Cable, fiber or DSL: 68.7%
No internet access: 20.9%
Without health insurance: 2.8%
Limited-English households: 6%

Geography

City (USPS): San Isidro
State: Texas
County: Starr County
Center point: 26.7397° N, 98.3985° W
Land area: 37 sq mi
Water area: under 0.1 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

San Isidro (unincorporated)4% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 78588

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
78536	Delmita, TX	7.2 mi	371	$28,393	—
78563	Linn, TX	10 mi	92	—	—
78591	Santa Elena, TX	12 mi	158	$35,750	—
78353	Encino, TX	14 mi	476	—	—
78541	Edinburg, TX	21 mi	51,710	$52,863	$156,700
78582	Rio Grande City, TX	26 mi	44,741	$42,626	$102,800
78360	Guerra, TX	28 mi	0	—	—
78540	Edinburg, TX	28 mi	0	—	—
78542	Edinburg, TX	29 mi	89,401	$55,243	$150,200
78549	Hargill, TX	29 mi	609	$19,222	$75,400
78576	Penitas, TX	30 mi	15,484	$49,137	$131,400
78574	Mission, TX	30 mi	62,456	$52,393	$129,900

Questions about 78588

What city is zip code 78588?

78588 is assigned to San Isidro, Texas. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 78588 in?

78588 is in Starr County, Texas.

What is the population of 78588?

About 289 people live in 78588, according to the Census Bureau's American Community Survey.

What time zone is 78588 in?

78588 is in Central Time.

What is the median household income in 78588?

The median household income in 78588 is $94,821.

What zip codes are near 78588?

The closest zip codes to 78588 are 78536, 78563, 78591, 78353, 78541.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 78588, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.