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US ZIP Code Profile

ZIP Code 30040
Cumming, Georgia

ZIP code 30040 is in Cumming, located in Forsyth County, Georgia, within the Atlanta-Sandy Springs-Roswell metro area. Its 2020 Census population was 81,191. The estimated median adjusted gross income per tax return is $83,028, and about 18% of filers report $200,000 or more.

2020 Population
81,191
Census ZCTA
County
Forsyth
FIPS 13117
Median income (est.)
$83,028
IRS SOI 2022
Land Area
58.885 mi²
+ 0.546 mi² water

01Location & Geography

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

Primary CityCumming, GA
CountyForsyth County (FIPS 13117)
StateGeorgia (FIPS 13)
Metro Area (MSA)Atlanta-Sandy Springs-Roswell, GA Metro Area (12060)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates34.21011, -84.18786
Land / Water Area58.885 mi² land · 0.546 mi² water

02Income & Economics

Distribution of the 37,500 individual tax returns filed in 30040 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
22.1%
$25K–$50K
14.4%
$50K–$75K
10.8%
$75K–$100K
8.7%
$100K–$200K
25.6%
$200K+
18.4%
The $200,000+ bracket accounts for 54% of 30040's total adjusted gross income, from 18% of returns — a concentration that drives the gap between the median ($83,028) 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 30040's IRS income metrics, 2020–2022.

Median income (2021→2022)
$83,028
▲ 6.3%
Filers earning $200K+
18.4%
▲ 3.0 pt
Total filers
37,500
▲ 2.6%
GET /zipc/v2/zipcodes/30040/soi?year=… $70K 2020 $78K 2021 $83K 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 30040 ZCTA.

2000
42,444
 
2010
54,653
▲ +28.8%
2020
81,191
▲ +48.6%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortB
USPS Finance Number122233
City AliasesCumming

06Frequently Asked Questions

What county is ZIP code 30040 in?

ZIP code 30040 is in Forsyth County, Georgia (county FIPS code 13117).

What city is ZIP code 30040?

The primary USPS city for 30040 is Cumming, GA.

What metro area (MSA) is 30040 in?

30040 is part of the Atlanta-Sandy Springs-Roswell, GA Metro Area (MSA code 12060).

What is the population of ZIP code 30040?

The 2020 Census population of 30040 was 81,191 residents.

What is the median income in ZIP code 30040?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 30040 is about $83,028, with around 18% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.