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zipcodes.pro — ZIP/78640

78640

ZIP 78640 is Kyle, Texas, mostly in Hays County; area codes 737 and 512; Central time.

Type
Standard
Time zone
America/Chicago
County
Hays +2 more
Population
77,531
Coordinates
29.9949, -97.8212
☼ Live from 78640 — Kyle, TX

Weather right now

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Local time: —

Where 78640 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 78640
  • 🔢 Type 78640 into a pocket calculator and turn it upside down: OhgBL — not quite a word, sorry.
  • ➕ As a number, 78,640 = 2 × 2 × 2 × 2 × 5 × 983. Its digits add up to 25, a total 2,242 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011001100110000
  • 🏠 Its numerical neighbours: 78639 (Kingsland, TX, 59 mi away) and 78641 (Leander, TX, 39 mi away).
  • 🔄 Backwards, 78640 becomes 04687, which is not a ZIP code at all.
  • 👥 47 other ZIP codes are made of exactly the same digits (04768, 04786, 06478, 06487, 06784, 07648, …). The farthest-flung twin is 04786 in Washburn, ME, 1,961 miles away.
  • 🧭 Farther south than 93% of all ZIP codes, and farther west than 77%.
  • 🎯681 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 78640 and you would come out at 29.99°S, 82.18°E — 1,477 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 05m of daylight. Shortest: 10h 13m.
  • 📏 At 89.6 square miles of land, 78640 is bigger than 75% of ZIP codes — room for about 68 Central Parks.
🌙 The sky over 78640 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population77,531This ZIP77,531
Households27,375This ZIP27,375
Housing units28,135This ZIP28,135
Median age33.4This ZIP33.4Texas35.6US 38.9
Median household income$90,075This ZIP$90,075Texas$78,476US $80,734
Median home value$330,400This ZIP$330,400Texas$283,800US $332,700
Median gross rent$1,730This ZIP$1,730Texas$1,403US $1,413
Bachelor's degree or higher29.3%This ZIP29.3%
Mean commute38.0 minThis ZIP38.0 min
Population density865.6 / sq miThis ZIP865.6 / sq mi

Business and tax activity

Business establishments1,025This ZIP1,025
Employees13,484This ZIP13,484
Annual payroll$631,489,000This ZIP$631,489,000
Tax returns filed35,970This ZIP35,970
Total adjusted gross income$2,413,682,000This ZIP$2,413,682,000

Land area

Land area89.57 sq miThis ZIP89.57 sq mi
Water area0.75 sq miThis ZIP0.75 sq mi

Counties 78640 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Hays County 83.6%
Caldwell County 14.9%
Travis County 1.4%

Other place names in 78640

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

ZIP codes near 78640

ZIPCityDistance
78610 Buda, TX 6.0 mi
78656 Maxwell, TX 6.3 mi
78652 Manchaca, TX 9.9 mi
78747 Austin, TX 10.2 mi
78748 Austin, TX 11.4 mi
78667 San Marcos, TX 11.7 mi
78644 Lockhart, TX 12.2 mi
78655 Martindale, TX 12.4 mi
78666 San Marcos, TX 12.5 mi
78739 Austin, TX 13.2 mi

Find every ZIP code within 10 miles of 78640 →

Questions about this ZIP code

Where is ZIP code 78640?

78640 is in Kyle, Texas, in Hays County, part of the Austin-Round Rock-San Marcos, TX metropolitan area. Its published point location is 29.9949, -97.8212.

What county is 78640 in?

78640 spans 3 counties: Hays County, Caldwell County and Travis County. Most of it falls in Hays County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 78640?

Kyle uses area codes 737 and 512, from NANPA's telephone records.

What time zone is 78640 in?

78640 uses America/Chicago.

How many people live in 78640?

About 77,531 people live in ZIP code 78640, in 27,375 households, at 865.6 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 78640?

$90,075 a year, against $78,476 across Texas.

What ZIP codes are near 78640?

The closest are 78610 (6 mi), 78656 (6.3 mi), 78652 (9.9 mi), 78747 (10.2 mi) and 78748 (11.4 mi).

Is 78640 a PO Box ZIP code?

78640 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “78640 ZIP Code — Kyle, Texas (Hays County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78640

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