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US ZIP Code Profile

ZIP Code 30340
Atlanta, Georgia

ZIP code 30340 is in Atlanta, located in Dekalb County, Georgia, within the Atlanta-Sandy Springs-Roswell metro area. Its 2020 Census population was 30,529. The estimated median adjusted gross income per tax return is $32,508, and about 4% of filers report $200,000 or more.

2020 Population
30,529
Census ZCTA
County
Dekalb
FIPS 13089
Median income (est.)
$32,508
IRS SOI 2022
Land Area
8.531 mi²
+ 0.012 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityAtlanta, GA
CountyDekalb County (FIPS 13089)
StateGeorgia (FIPS 13)
Metro Area (MSA)Atlanta-Sandy Springs-Roswell, GA Metro Area (12060)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates33.89714, -84.25167
Land / Water Area8.531 mi² land · 0.012 mi² water

02Income & Economics

Distribution of the 13,110 individual tax returns filed in 30340 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
42.5%
$25K–$50K
25.0%
$50K–$75K
12.0%
$75K–$100K
6.1%
$100K–$200K
10.1%
$200K+
4.3%
The $200,000+ bracket accounts for 27% of 30340's total adjusted gross income, from 4% of returns — a concentration that drives the gap between the median ($32,508) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 30340's IRS income metrics, 2020–2022.

Median income (2021→2022)
$32,508
▲ 3.5%
Filers earning $200K+
4.3%
▲ 0.6 pt
Total filers
13,110
▲ 1.5%
GET /zipc/v2/zipcodes/30340/soi?year=… $28K 2020 $31K 2021 $33K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 30340 ZCTA.

2000
26,997
 
2010
29,394
▲ +8.9%
2020
30,529
▲ +3.9%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 30340. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 30340

Atlanta and its immediate neighbors, sorted by distance.

3 mi
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Distance from 30340 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortB
USPS Finance Number120440
City AliasesAtl, Atlanta, Doraville

07Frequently Asked Questions

What county is ZIP code 30340 in?

ZIP code 30340 is in Dekalb County, Georgia (county FIPS code 13089).

What city is ZIP code 30340?

The primary USPS city for 30340 is Atlanta, GA.

What metro area (MSA) is 30340 in?

30340 is part of the Atlanta-Sandy Springs-Roswell, GA Metro Area (MSA code 12060).

What is the population of ZIP code 30340?

The 2020 Census population of 30340 was 30,529 residents.

What is the median income in ZIP code 30340?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 30340 is about $32,508, with around 4% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.