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Where 75831 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 75831 into a pocket calculator and turn it upside down: IEBSL — not quite a word, sorry.
- ➕ As a number, 75,831 = 3 × 7 × 23 × 157. Its digits add up to 24, a total 2,425 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10010100000110111 - 🏠 Its numerical neighbours: 75803 (Palestine, TX, 34 mi away) and 75832 (Cayuga, TX, 33 mi away).
- 🔄 Backwards, 75831 becomes 13857, which is not a ZIP code at all.
- 👥 47 other ZIP codes are made of exactly the same digits (13758, 15378, 15738, 15783, 17358, 17538, …). The farthest-flung twin is 83715 in Boise, ID, 1,378 miles away.
- 🧭 Farther south than 90% of all ZIP codes, and farther west than 71%.
- 🎯595 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 75831 and you would come out at 31.47°S, 83.99°E — 1,427 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 14h 12m of daylight. Shortest: 10h 06m.
- 📏 At 251.0 square miles of land, 75831 is bigger than 93% of ZIP codes — room for about 191 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 4,881This ZIP4,881 |
|---|---|
| Households | 2,043This ZIP2,043 |
| Housing units | 2,652This ZIP2,652 |
| Median age | 42.1This ZIP42.1Texas35.6US 38.9 |
| Median household income | $51,935This ZIP$51,935Texas$78,476US $80,734 |
| Median home value | $117,500This ZIP$117,500Texas$283,800US $332,700 |
| Median gross rent | $920This ZIP$920Texas$1,403US $1,413 |
| Bachelor's degree or higher | 12.8%This ZIP12.8% |
| Mean commute | 28.9 minThis ZIP28.9 min |
| Population density | 19.4 / sq miThis ZIP19.4 / sq mi |
Business and tax activity
| Business establishments | 116This ZIP116 |
|---|---|
| Employees | 2,369This ZIP2,369 |
| Annual payroll | $143,958,000This ZIP$143,958,000 |
| Tax returns filed | 2,160This ZIP2,160 |
| Total adjusted gross income | $145,416,000This ZIP$145,416,000 |
Land area
| Land area | 250.96 sq miThis ZIP250.96 sq mi |
|---|---|
| Water area | 1.38 sq miThis ZIP1.38 sq mi |
Counties 75831 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Leon County | 70.2% |
| Freestone County | 29.8% |
Other place names in 75831
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 75831
| ZIP | City | Distance |
|---|---|---|
75855 | Oakwood, TX | 10.3 mi |
77850 | Concord, TX | 11.1 mi |
75838 | Donie, TX | 13.0 mi |
75846 | Jewett, TX | 13.3 mi |
75833 | Centerville, TX | 17.2 mi |
75860 | Teague, TX | 17.3 mi |
77865 | Marquez, TX | 21.4 mi |
75886 | Tennessee Colony, TX | 21.7 mi |
75840 | Fairfield, TX | 21.9 mi |
77855 | Flynn, TX | 22.7 mi |
Find every ZIP code within 10 miles of 75831 →
Questions about this ZIP code
Where is ZIP code 75831?
75831 is in Buffalo, Texas, in Leon County. Its published point location is 31.4737, -96.0094.
What county is 75831 in?
75831 spans 2 counties: Leon County and Freestone County. Most of it falls in Leon 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 75831?
Buffalo uses area codes 903 and 430, from NANPA's telephone records.
What time zone is 75831 in?
75831 uses America/Chicago.
How many people live in 75831?
About 4,881 people live in ZIP code 75831, in 2,043 households, at 19.4 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 75831?
$51,935 a year, against $78,476 across Texas.
What ZIP codes are near 75831?
The closest are 75855 (10.3 mi), 77850 (11.1 mi), 75838 (13 mi), 75846 (13.3 mi) and 75833 (17.2 mi).
Is 75831 a PO Box ZIP code?
75831 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “75831 ZIP Code — Buffalo, Texas (Leon County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/75831
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/75831.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.