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Where 78021 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 78021 into a pocket calculator and turn it upside down: IZOBL — not quite a word, sorry.
- ➕ As a number, 78,021 = 3 × 3 × 8669. Its digits add up to 18, a total 2,332 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011000011000101 - 🏠 Its numerical neighbours: 78019 (Encinal, TX, 39 mi away) and 78022 (George West, TX, 43 mi away).
- 🔄 Backwards, 78021 becomes 12087 — and that is a real ZIP code: Hannacroix, NY, 1,694 miles away.
- 👥 67 other ZIP codes are made of exactly the same digits (01827, 02187, 02718, 02817, 02871, 07821, …). The farthest-flung twin is 02187 in Milton Village, MA, 1,820 miles away.
- 🧭 Farther south than 96% of all ZIP codes, and farther west than 78%.
- 🎯787 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78021 and you would come out at 28.44°S, 81.17°E — 1,511 miles from West Island, Cocos Islands, the nearest big city to that spot.
- ☀Longest day of the year: 13h 57m of daylight. Shortest: 10h 20m.
- 📏 At 295.2 square miles of land, 78021 is bigger than 95% of ZIP codes — room for about 224 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 165This ZIP165 |
|---|---|
| Households | 51This ZIP51 |
| Housing units | 55This ZIP55 |
| Median age | 12.9This ZIP12.9Texas35.6US 38.9 |
| Bachelor's degree or higher | 41.8%This ZIP41.8% |
| Population density | 0.6 / sq miThis ZIP0.6 / sq mi |
Land area
| Land area | 295.19 sq miThis ZIP295.19 sq mi |
|---|---|
| Water area | 1.51 sq miThis ZIP1.51 sq mi |
Counties 78021 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| La Salle County | 64.0% |
| McMullen County | 35.9% |
Other place names in 78021
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 78021
| ZIP | City | Distance |
|---|---|---|
78072 | Tilden, TX | 16.8 mi |
78014 | Cotulla, TX | 17.4 mi |
78007 | Calliham, TX | 25.8 mi |
78011 | Charlotte, TX | 26.7 mi |
78026 | Jourdanton, TX | 27.0 mi |
78001 | Artesia Wells, TX | 27.7 mi |
78017 | Dilley, TX | 31.0 mi |
78012 | Christine, TX | 32.5 mi |
78005 | Bigfoot, TX | 34.4 mi |
78075 | Whitsett, TX | 35.6 mi |
Find every ZIP code within 10 miles of 78021 →
Questions about this ZIP code
Where is ZIP code 78021?
78021 is in Fowlerton, Texas, in La Salle County. Its published point location is 28.4375, -98.8314.
What county is 78021 in?
78021 spans 2 counties: La Salle County and McMullen County. Most of it falls in La Salle 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 78021?
Fowlerton uses area code 830, from NANPA's telephone records.
What time zone is 78021 in?
78021 uses America/Chicago.
How many people live in 78021?
About 165 people live in ZIP code 78021, in 51 households, at 0.6 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 78021?
The closest are 78072 (16.8 mi), 78014 (17.4 mi), 78007 (25.8 mi), 78011 (26.7 mi) and 78026 (27 mi).
Is 78021 a PO Box ZIP code?
78021 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78021 ZIP Code — Fowlerton, Texas (La Salle County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78021
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78021.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.