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zipcodes.pro — ZIP/78638

78638

ZIP 78638 is Kingsbury, Texas, mostly in Guadalupe County; area code 830; Central time.

Type
Standard
Time zone
America/Chicago
County
Guadalupe +1 more
Population
2,135
Coordinates
29.6596, -97.7852
☼ Live from 78638 — Kingsbury, TX

Weather right now

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Local time: —

Where 78638 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 78638
  • 🔢 Type 78638 into a pocket calculator and turn it upside down: BEgBL — not quite a word, sorry.
  • ➕ As a number, 78,638 = 2 × 7 × 41 × 137. Its digits add up to 32, a total 644 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011001100101110
  • 🏠 Its numerical neighbours: 78636 (Johnson City, TX, 59 mi away) and 78639 (Kingsland, TX, 80 mi away).
  • 🔄 Backwards, 78638 becomes 83687 — and that is a real ZIP code: Nampa, ID, 1,411 miles away.
  • 👥 20 other ZIP codes are made of exactly the same digits (37688, 37868, 37886, 38768, 38876, 63878, …). The farthest-flung twin is 83876 in Worley, ID, 1,598 miles away.
  • 🧭 Farther south than 94% of all ZIP codes, and farther west than 76%.
  • 🎯704 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 78638 and you would come out at 29.66°S, 82.21°E — 1,499 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 03m of daylight. Shortest: 10h 14m.
  • 📏 At 118.1 square miles of land, 78638 is bigger than 82% of ZIP codes — room for about 90 Central Parks.
🌙 The sky over 78638 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population2,135This ZIP2,135
Households706This ZIP706
Housing units819This ZIP819
Median age45.4This ZIP45.4Texas35.6US 38.9
Median household income$69,250This ZIP$69,250Texas$78,476US $80,734
Median home value$317,400This ZIP$317,400Texas$283,800US $332,700
Median gross rent$1,135This ZIP$1,135Texas$1,403US $1,413
Bachelor's degree or higher23.5%This ZIP23.5%
Mean commute43.3 minThis ZIP43.3 min
Population density18.1 / sq miThis ZIP18.1 / sq mi

Business and tax activity

Business establishments31This ZIP31
Employees261This ZIP261
Annual payroll$15,865,000This ZIP$15,865,000
Tax returns filed1,120This ZIP1,120
Total adjusted gross income$98,960,000This ZIP$98,960,000

Land area

Land area118.06 sq miThis ZIP118.06 sq mi
Water area0.37 sq miThis ZIP0.37 sq mi

Counties 78638 spans

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

CountyShare of this ZIP
Guadalupe County 98.3%
Gonzales County 1.7%

Other place names in 78638

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

ZIP codes near 78638

ZIPCityDistance
78661 Prairie Lea, TX 4.6 mi
78670 Staples, TX 8.2 mi
78622 Fentress, TX 8.5 mi
78648 Luling, TX 9.1 mi
78658 Ottine, TX 10.7 mi
78604 Belmont, TX 11.2 mi
78655 Martindale, TX 11.2 mi
78156 Seguin, TX 11.6 mi
78155 Seguin, TX 12.4 mi
78122 Leesville, TX 14.7 mi

Find every ZIP code within 10 miles of 78638 →

Questions about this ZIP code

Where is ZIP code 78638?

78638 is in Kingsbury, Texas, in Guadalupe County, part of the San Antonio-New Braunfels, TX metropolitan area. Its published point location is 29.6596, -97.7852.

What county is 78638 in?

78638 spans 2 counties: Guadalupe County and Gonzales County. Most of it falls in Guadalupe 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 78638?

Kingsbury uses area code 830, from NANPA's telephone records.

What time zone is 78638 in?

78638 uses America/Chicago.

How many people live in 78638?

About 2,135 people live in ZIP code 78638, in 706 households, at 18.1 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 78638?

$69,250 a year, against $78,476 across Texas.

What ZIP codes are near 78638?

The closest are 78661 (4.6 mi), 78670 (8.2 mi), 78622 (8.5 mi), 78648 (9.1 mi) and 78658 (10.7 mi).

Is 78638 a PO Box ZIP code?

78638 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “78638 ZIP Code — Kingsbury, Texas (Guadalupe County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78638

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