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zipcodes.pro — ZIP/78588

78588

ZIP 78588 is San Isidro, Texas, in Starr County; area code 956; Central time.

Type
Standard
Time zone
America/Chicago
County
Starr
Population
289
Coordinates
26.7397, -98.3985
☼ Live from 78588 — San Isidro, TX

Weather right now

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NEXRAD radar
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Local time: —

Where 78588 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 78588
  • 🔢 Type 78588 into a pocket calculator and turn it upside down: BBSBL — not quite a word, sorry.
  • ➕ As a number, 78,588 = 2 × 2 × 3 × 3 × 37 × 59. Its digits add up to 36, a total 149 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011001011111100
  • 🏠 Its numerical neighbours: 78586 (San Benito, TX, 64 mi away) and 78589 (San Juan, TX, 43 mi away).
  • 🔄 Backwards, 78588 becomes 88587 — and that is a real ZIP code: El Paso, TX, 586 miles away.
  • 👥 4 other ZIP codes are made of exactly the same digits (58788, 78885, 88578, 88587). The farthest-flung twin is 58788 in Towner, ND, 1,496 miles away.
  • 🧭 Farther south than 97% of all ZIP codes, and farther west than 78%.
  • 🎯904 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 78588 and you would come out at 26.74°S, 81.60°E — 1,411 miles from West Island, Cocos Islands, the nearest big city to that spot.
  • ☀Longest day of the year: 13h 49m of daylight. Shortest: 10h 27m.
  • 📏 At 36.6 square miles of land, 78588 is bigger than 51% of ZIP codes — room for about 28 Central Parks.
🌙 The sky over 78588 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population289This ZIP289
Households67This ZIP67
Housing units122This ZIP122
Median age41.2This ZIP41.2Texas35.6US 38.9
Median household income$94,821This ZIP$94,821Texas$78,476US $80,734
Median home value$52,800This ZIP$52,800Texas$283,800US $332,700
Median gross rent$520This ZIP$520Texas$1,403US $1,413
Bachelor's degree or higher28.8%This ZIP28.8%
Mean commute18.5 minThis ZIP18.5 min
Population density7.9 / sq miThis ZIP7.9 / sq mi

Business and tax activity

Business establishments6This ZIP6
Employees24This ZIP24
Annual payroll$1,396,000This ZIP$1,396,000
Tax returns filed140This ZIP140
Total adjusted gross income$6,123,000This ZIP$6,123,000

Land area

Land area36.62 sq miThis ZIP36.62 sq mi
Water area0.00 sq mi

Other place names in 78588

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 78588

ZIPCityDistance
78536 Delmita, TX 7.2 mi
78563 Linn, TX 10.0 mi
78591 Santa Elena, TX 11.7 mi
78353 Encino, TX 13.9 mi
78541 Edinburg, TX 21.2 mi
78582 Rio Grande City, TX 25.6 mi
78360 Guerra, TX 28.0 mi
78540 Edinburg, TX 28.4 mi
78542 Edinburg, TX 28.5 mi
78549 Hargill, TX 28.6 mi

Find every ZIP code within 10 miles of 78588 →

Questions about this ZIP code

Where is ZIP code 78588?

78588 is in San Isidro, Texas, in Starr County, part of the Rio Grande City-Roma, TX micropolitan area. Its published point location is 26.7397, -98.3985.

What county is 78588 in?

78588 lies in Starr County.

What area code is 78588?

San Isidro uses area code 956, from NANPA's telephone records.

What time zone is 78588 in?

78588 uses America/Chicago.

How many people live in 78588?

About 289 people live in ZIP code 78588, in 67 households, at 7.9 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 78588?

$94,821 a year, against $78,476 across Texas.

What ZIP codes are near 78588?

The closest are 78536 (7.2 mi), 78563 (10 mi), 78591 (11.7 mi), 78353 (13.9 mi) and 78541 (21.2 mi).

Is 78588 a PO Box ZIP code?

78588 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “78588 ZIP Code — San Isidro, Texas (Starr County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78588

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