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Where 29812 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 29812 into a pocket calculator and turn it upside down: ZIBGZ — not quite a word, sorry.
- ➕ As a number, 29,812 = 2 × 2 × 29 × 257. Its digits add up to 22, a total 2,607 other ZIP codes share.
- 💾In binary, the way a computer stores it:
111010001110100 - 🏠 Its numerical neighbours: 29810 (Allendale, SC, 16 mi away) and 29813 (Hilda, SC, 9 mi away).
- 🔄 Backwards, 29812 becomes 21892, which is not a ZIP code at all.
- 👥 20 other ZIP codes are made of exactly the same digits (12928, 18229, 18922, 21289, 21298, 21829, …). The farthest-flung twin is 98221 in Anacortes, WA, 2,361 miles away.
- 🧭 Farther south than 83% of all ZIP codes, and farther east than 69%.
- 🎯1,056 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 29812 and you would come out at 33.21°S, 98.62°E — 1,007 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 21m of daylight. Shortest: 9h 57m.
- 📏 At 173.5 square miles of land, 29812 is bigger than 89% of ZIP codes — room for about 132 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 11,132This ZIP11,132 |
|---|---|
| Households | 4,244This ZIP4,244 |
| Housing units | 5,141This ZIP5,141 |
| Median age | 38.7This ZIP38.7South Carolina40.2US 38.9 |
| Median household income | $51,870This ZIP$51,870South Carolina$69,324US $80,734 |
| Median home value | $112,900This ZIP$112,900South Carolina$259,000US $332,700 |
| Median gross rent | $717This ZIP$717South Carolina$1,180US $1,413 |
| Bachelor's degree or higher | 15.3%This ZIP15.3% |
| Mean commute | 27.1 minThis ZIP27.1 min |
| Population density | 64.2 / sq miThis ZIP64.2 / sq mi |
Business and tax activity
| Business establishments | 223This ZIP223 |
|---|---|
| Employees | 2,451This ZIP2,451 |
| Annual payroll | $96,998,000This ZIP$96,998,000 |
| Tax returns filed | 4,610This ZIP4,610 |
| Total adjusted gross income | $244,086,000This ZIP$244,086,000 |
Land area
| Land area | 173.48 sq miThis ZIP173.48 sq mi |
|---|---|
| Water area | 1.74 sq miThis ZIP1.74 sq mi |
Counties 29812 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Barnwell County | 97.7% |
| Allendale County | 2.3% |
Other place names in 29812
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 29812
| ZIP | City | Distance |
|---|---|---|
29813 | Hilda, SC | 8.9 mi |
29836 | Martin, SC | 11.1 mi |
29849 | Ulmer, SC | 11.4 mi |
29826 | Elko, SC | 11.9 mi |
29843 | Olar, SC | 12.0 mi |
29817 | Blackville, SC | 12.5 mi |
29853 | Williston, SC | 13.1 mi |
29042 | Denmark, SC | 15.0 mi |
29810 | Allendale, SC | 15.8 mi |
29846 | Sycamore, SC | 16.0 mi |
Find every ZIP code within 10 miles of 29812 →
Questions about this ZIP code
Where is ZIP code 29812?
29812 is in Barnwell, South Carolina, in Barnwell County. Its published point location is 33.2144, -81.3834.
What county is 29812 in?
29812 spans 2 counties: Barnwell County and Allendale County. Most of it falls in Barnwell 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 29812?
Barnwell uses area codes 839 and 803, from NANPA's telephone records.
What time zone is 29812 in?
29812 uses America/New_York.
How many people live in 29812?
About 11,132 people live in ZIP code 29812, in 4,244 households, at 64.2 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 29812?
$51,870 a year, against $69,324 across South Carolina.
What ZIP codes are near 29812?
The closest are 29813 (8.9 mi), 29836 (11.1 mi), 29849 (11.4 mi), 29826 (11.9 mi) and 29843 (12 mi).
Is 29812 a PO Box ZIP code?
29812 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “29812 ZIP Code — Barnwell, South Carolina (Barnwell County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/29812
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/29812.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.