30340
ZIP 30340 is in Atlanta, Georgia, mostly in DeKalb County; area codes 404, 770, 678, 470 and 943; Eastern time. Atlanta has 92 ZIP codes in all.
- Type
- Standard
- Time zone
- America/New_York
- County
- DeKalb +1 more
- Metro area
- Atlanta-Sandy Springs-Roswell, GA
- Population
- 30,062
- Coordinates
- 33.8979, -84.2528
Weather right now
Asking the National Weather Service…
Where 30340 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 30340 into a pocket calculator and turn it upside down: OhEOE — not quite a word, sorry.
- ➕ As a number, 30,340 = 2 × 2 × 5 × 37 × 41. Its digits add up to 10, a total 513 other ZIP codes share.
- 💾In binary, the way a computer stores it:
111011010000100 - 🏠 Its numerical neighbours: 30339 (Atlanta, GA, 12 mi away) and 30341 (Atlanta, GA, 2 mi away).
- 🔄 Backwards, 30340 becomes 04303, which is not a ZIP code at all.
- 👥 16 other ZIP codes are made of exactly the same digits (03034, 03043, 03304, 04033, 04330, 30034, …). The farthest-flung twin is 34030 in APO AA, a military post office, 4,764 miles away.
- 🧭 Farther south than 80% of all ZIP codes, and farther east than 59%.
- 🎯890 miles southeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 30340 and you would come out at 33.90°S, 95.75°E — 1,172 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 25m of daylight. Shortest: 9h 54m.
- 📏 At 8.2 square miles of land, 30340 is bigger than 25% of ZIP codes — room for about 6.3 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 30,062This ZIP30,062 |
|---|---|
| Households | 10,843This ZIP10,843 |
| Housing units | 11,893This ZIP11,893 |
| Median age | 33.4This ZIP33.4Georgia37.6US 38.9 |
| Median household income | $62,748This ZIP$62,748Georgia$77,353US $80,734 |
| Median home value | $344,000This ZIP$344,000Georgia$303,300US $332,700 |
| Median gross rent | $1,694This ZIP$1,694Georgia$1,393US $1,413 |
| Bachelor's degree or higher | 36.6%This ZIP36.6% |
| Mean commute | 30.3 minThis ZIP30.3 min |
| Population density | 3,644.8 / sq miThis ZIP3,644.8 / sq mi |
Business and tax activity
| Business establishments | 1,274This ZIP1,274 |
|---|---|
| Employees | 21,209This ZIP21,209 |
| Annual payroll | $1,140,454,000This ZIP$1,140,454,000 |
| Tax returns filed | 13,110This ZIP13,110 |
| Total adjusted gross income | $728,567,000This ZIP$728,567,000 |
Land area
| Land area | 8.25 sq miThis ZIP8.25 sq mi |
|---|---|
| Water area | 0.01 sq miThis ZIP0.01 sq mi |
Counties 30340 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| DeKalb County | 80.9% |
| Gwinnett County | 19.1% |
Other place names in 30340
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 30340
| ZIP | City | Distance |
|---|---|---|
30341 | Atlanta, GA | 2.2 mi |
30360 | Atlanta, GA | 2.7 mi |
30085 | Tucker, GA | 3.6 mi |
30345 | Atlanta, GA | 3.7 mi |
30084 | Tucker, GA | 3.7 mi |
30071 | Norcross, GA | 4.0 mi |
30093 | Norcross, GA | 4.3 mi |
30319 | Atlanta, GA | 4.9 mi |
30338 | Atlanta, GA | 5.0 mi |
30346 | Atlanta, GA | 5.3 mi |
Find every ZIP code within 10 miles of 30340 →
Questions about this ZIP code
Where is ZIP code 30340?
30340 is in Atlanta, Georgia, in DeKalb County, part of the Atlanta-Sandy Springs-Roswell, GA metropolitan area. Its published point location is 33.8979, -84.2528.
What county is 30340 in?
30340 spans 2 counties: DeKalb County and Gwinnett County. Most of it falls in DeKalb 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 30340?
Atlanta uses area codes 404, 770, 678, 470 and 943, from NANPA's telephone records.
What time zone is 30340 in?
30340 uses America/New_York.
How many people live in 30340?
About 30,062 people live in ZIP code 30340, in 10,843 households, at 3,644.8 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 30340?
$62,748 a year, against $77,353 across Georgia.
What ZIP codes are near 30340?
The closest are 30341 (2.2 mi), 30360 (2.7 mi), 30085 (3.6 mi), 30345 (3.7 mi) and 30084 (3.7 mi).
Is 30340 a PO Box ZIP code?
30340 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “30340 ZIP Code — Atlanta, Georgia (DeKalb County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/30340
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/30340.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.