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Where 40830 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 40830 into a pocket calculator and turn it upside down: OEBOh — not quite a word, sorry.
- ➕ As a number, 40,830 = 2 × 3 × 5 × 1361. Its digits add up to 15, a total 1,657 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1001111101111110 - 🏠 Its numerical neighbours: 40829 (Grays Knob, KY, 2 mi away) and 40831 (Harlan, KY, 1 mi away).
- 🔄 Backwards, 40830 becomes 03804 — and that is a real ZIP code: Portsmouth, NH, 794 miles away.
- 👥 26 other ZIP codes are made of exactly the same digits (03048, 03084, 03804, 03840, 04038, 04083, …). The farthest-flung twin is 34008 in APO AA, a military post office, 1,909 miles away.
- 🧭 Farther south than 65% of all ZIP codes, and farther east than 62%.
- 🎯852 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 40830 and you would come out at 36.78°S, 96.67°E — 1,142 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 41m of daylight. Shortest: 9h 38m.
- 📏 At 0.367 square miles of land, 40830 is bigger than 4% of ZIP codes — about 178 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 312This ZIP312 |
|---|---|
| Households | 113This ZIP113 |
| Housing units | 148This ZIP148 |
| Median age | 37.3This ZIP37.3Kentucky39.1US 38.9 |
| Median household income | $21,815This ZIP$21,815Kentucky$63,726US $80,734 |
| Bachelor's degree or higher | 0.0% |
| Population density | 850.1 / sq miThis ZIP850.1 / sq mi |
Land area
| Land area | 0.37 sq miThis ZIP0.37 sq mi |
|---|---|
| Water area | 0.00 sq miThis ZIP0.00 sq mi |
ZIP codes near 40830
| ZIP | City | Distance |
|---|---|---|
40964 | Mary Alice, KY | 0.6 mi |
40831 | Harlan, KY | 1.1 mi |
40829 | Grays Knob, KY | 2.1 mi |
40824 | Dayhoit, KY | 4.2 mi |
40873 | Wallins Creek, KY | 4.5 mi |
40854 | Loyall, KY | 5.1 mi |
40815 | Cawood, KY | 5.6 mi |
40818 | Coalgood, KY | 5.8 mi |
40819 | Coldiron, KY | 6.4 mi |
24218 | Ben Hur, VA | 6.4 mi |
Find every ZIP code within 10 miles of 40830 →
Questions about this ZIP code
Where is ZIP code 40830?
40830 is in Gulston, Kentucky, in Harlan County. Its published point location is 36.7764, -83.3313.
What county is 40830 in?
40830 lies in Harlan County.
What area code is 40830?
Gulston uses area code 606, from NANPA's telephone records.
What time zone is 40830 in?
40830 uses America/New_York.
How many people live in 40830?
About 312 people live in ZIP code 40830, in 113 households, at 850.1 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 40830?
$21,815 a year, against $63,726 across Kentucky.
What ZIP codes are near 40830?
The closest are 40964 (0.6 mi), 40831 (1.1 mi), 40829 (2.1 mi), 40824 (4.2 mi) and 40873 (4.5 mi).
Is 40830 a PO Box ZIP code?
40830 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “40830 ZIP Code — Gulston, Kentucky (Harlan County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/40830
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/40830.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.