Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/28631

28631

ZIP 28631 is Grassy Creek, North Carolina, mostly in Ashe County; area code 336; Eastern time.

Type
Standard
Time zone
America/New_York
County
Ashe +1 more
Metro area
none
Population
684
Coordinates
36.5475, -81.4104
☼ Live from 28631 — Grassy Creek, NC

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 28631 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 28631
  • 🔢 Type 28631 into a pocket calculator and turn it upside down: IEgBZ — not quite a word, sorry.
  • ➕ 28631 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 110111111010111
  • 🏠 Its numerical neighbours: 28630 (Granite Falls, NC, 49 mi away) and 28633 (Lenoir, NC, 44 mi away).
  • 🔄 Backwards, 28631 becomes 13682 — and that is a real ZIP code: Rodman, NY, 582 miles away.
  • 👥 52 other ZIP codes are made of exactly the same digits (12836, 12863, 13628, 13682, 13826, 13862, …). The farthest-flung twin is 83612 in Council, ID, 1,910 miles away.
  • 🧭 Farther south than 66% of all ZIP codes, and farther east than 69%.
  • 🎯958 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 28631 and you would come out at 36.55°S, 98.59°E — 1,035 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 40m of daylight. Shortest: 9h 40m.
  • 📏 At 23.3 square miles of land, 28631 is bigger than 40% of ZIP codes — room for about 18 Central Parks.
🌙 The sky over 28631 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population684This ZIP684
Households267This ZIP267
Housing units492This ZIP492
Median age45.1This ZIP45.1North Carolina39.1US 38.9
Bachelor's degree or higher5.6%This ZIP5.6%
Mean commute24.6 minThis ZIP24.6 min
Population density29.4 / sq miThis ZIP29.4 / sq mi

Business and tax activity

Business establishments4This ZIP4
Employees29This ZIP29
Annual payroll$1,521,000This ZIP$1,521,000
Tax returns filed270This ZIP270
Total adjusted gross income$16,327,000This ZIP$16,327,000

Land area

Land area23.25 sq miThis ZIP23.25 sq mi
Water area0.33 sq miThis ZIP0.33 sq mi

Counties 28631 spans

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

CountyShare of this ZIP
Ashe County 91.0%
Alleghany County 9.0%

ZIP codes near 28631

ZIPCityDistance
24363 Mouth Of Wilson, VA 4.8 mi
28617 Crumpler, NC 5.3 mi
28672 Scottville, NC 6.4 mi
28663 Piney Creek, NC 6.7 mi
28643 Lansing, NC 7.4 mi
28693 Warrensville, NC 9.8 mi
28640 Jefferson, NC 9.9 mi
24378 Troutdale, VA 10.2 mi
28644 Laurel Springs, NC 11.2 mi
24292 Whitetop, VA 11.6 mi

Find every ZIP code within 10 miles of 28631 →

Questions about this ZIP code

Where is ZIP code 28631?

28631 is in Grassy Creek, North Carolina, in Ashe County. Its published point location is 36.5475, -81.4104.

What county is 28631 in?

28631 spans 2 counties: Ashe County and Alleghany County. Most of it falls in Ashe 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 28631?

Grassy Creek uses area code 336, from NANPA's telephone records.

What time zone is 28631 in?

28631 uses America/New_York.

How many people live in 28631?

About 684 people live in ZIP code 28631, in 267 households, at 29.4 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 28631?

The closest are 24363 (4.8 mi), 28617 (5.3 mi), 28672 (6.4 mi), 28663 (6.7 mi) and 28643 (7.4 mi).

Is 28631 a PO Box ZIP code?

28631 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “28631 ZIP Code — Grassy Creek, North Carolina (Ashe County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/28631

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/28631.json

Underlying data is public domain or openly licensed — sources, vintages and licences.