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Where 78159 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.
- 🔢 Type 78159 into a pocket calculator and turn it upside down: GSIBL — not quite a word, sorry.
- ➕ As a number, 78,159 = 3 × 26053. Its digits add up to 30, a total 1,024 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011000101001111 - 🏠 Its numerical neighbours: 78156 (Seguin, TX, 35 mi away) and 78160 (Stockdale, TX, 20 mi away).
- 🔄 Backwards, 78159 becomes 95187, which is not a ZIP code at all.
- 👥 23 other ZIP codes are made of exactly the same digits (17859, 17985, 18957, 57198, 59718, 59871, …). The farthest-flung twin is 98571 in Pacific Beach, WA, 1,888 miles away.
- 🧭 Farther south than 95% of all ZIP codes, and farther west than 76%.
- 🎯735 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78159 and you would come out at 29.23°S, 82.41°E — 1,499 miles from West Island, Cocos Islands, the nearest big city to that spot.
- ☀Longest day of the year: 14h 01m of daylight. Shortest: 10h 16m.
- 📏 At 131.8 square miles of land, 78159 is bigger than 84% of ZIP codes — room for about 100 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 623This ZIP623 |
|---|---|
| Households | 257This ZIP257 |
| Housing units | 303This ZIP303 |
| Median age | 41.6This ZIP41.6Texas35.6US 38.9 |
| Median household income | $35,083This ZIP$35,083Texas$78,476US $80,734 |
| Median home value | $132,600This ZIP$132,600Texas$283,800US $332,700 |
| Median gross rent | $921This ZIP$921Texas$1,403US $1,413 |
| Bachelor's degree or higher | 7.6%This ZIP7.6% |
| Mean commute | 43.5 minThis ZIP43.5 min |
| Population density | 4.7 / sq miThis ZIP4.7 / sq mi |
Business and tax activity
| Business establishments | 20This ZIP20 |
|---|---|
| Employees | 90This ZIP90 |
| Annual payroll | $4,190,000This ZIP$4,190,000 |
| Tax returns filed | 420This ZIP420 |
| Total adjusted gross income | $40,487,000This ZIP$40,487,000 |
Land area
| Land area | 131.81 sq miThis ZIP131.81 sq mi |
|---|---|
| Water area | 0.18 sq miThis ZIP0.18 sq mi |
Other place names in 78159
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 78159
| ZIP | City | Distance |
|---|---|---|
77994 | Westhoff, TX | 7.6 mi |
78677 | Wrightsboro, TX | 8.4 mi |
78140 | Nixon, TX | 12.1 mi |
78614 | Cost, TX | 12.7 mi |
78116 | Gillett, TX | 12.8 mi |
78111 | Ecleto, TX | 16.1 mi |
78143 | Pandora, TX | 16.2 mi |
78164 | Yorktown, TX | 17.5 mi |
78122 | Leesville, TX | 17.6 mi |
77967 | Hochheim, TX | 18.7 mi |
Find every ZIP code within 10 miles of 78159 →
Questions about this ZIP code
Where is ZIP code 78159?
78159 is in Smiley, Texas, in Gonzales County. Its published point location is 29.2259, -97.5850.
What county is 78159 in?
78159 lies in Gonzales County.
What area code is 78159?
Smiley uses area code 830, from NANPA's telephone records.
What time zone is 78159 in?
78159 uses America/Chicago.
How many people live in 78159?
About 623 people live in ZIP code 78159, in 257 households, at 4.7 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 78159?
$35,083 a year, against $78,476 across Texas.
What ZIP codes are near 78159?
The closest are 77994 (7.6 mi), 78677 (8.4 mi), 78140 (12.1 mi), 78614 (12.7 mi) and 78116 (12.8 mi).
Is 78159 a PO Box ZIP code?
78159 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78159 ZIP Code — Smiley, Texas (Gonzales County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78159
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78159.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.