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US ZIP Code Profile

ZIP Code 30078
Snellville, Georgia

ZIP code 30078 is in Snellville, located in Gwinnett County, Georgia, within the Atlanta-Sandy Springs-Roswell metro area. Its 2020 Census population was 38,350. The estimated median adjusted gross income per tax return is $45,635, and about 6% of filers report $200,000 or more.

2020 Population
38,350
Census ZCTA
County
Gwinnett
FIPS 13135
Median income (est.)
$45,635
IRS SOI 2022
Land Area
16.979 mi²
+ 0.251 mi² water

01Location & Geography

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

Primary CitySnellville, GA
CountyGwinnett County (FIPS 13135)
StateGeorgia (FIPS 13)
Metro Area (MSA)Atlanta-Sandy Springs-Roswell, GA Metro Area (12060)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates33.86102, -84.01799
Land / Water Area16.979 mi² land · 0.251 mi² water

02Income & Economics

Distribution of the 18,920 individual tax returns filed in 30078 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
30.8%
$25K–$50K
23.3%
$50K–$75K
14.6%
$75K–$100K
9.6%
$100K–$200K
15.6%
$200K+
6.1%
The $200,000+ bracket accounts for 33% of 30078's total adjusted gross income, from 6% of returns — a concentration that drives the gap between the median ($45,635) 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 30078's IRS income metrics, 2020–2022.

Median income (2021→2022)
$45,635
▲ 5.1%
Filers earning $200K+
6.1%
▲ 0.4 pt
Total filers
18,920
▲ 2.0%
GET /zipc/v2/zipcodes/30078/soi?year=… $41K 2020 $43K 2021 $46K 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 30078 ZCTA.

2000
29,113
 
2010
33,057
▲ +13.5%
2020
38,350
▲ +16.0%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number128030
City AliasesSnellville

06Frequently Asked Questions

What county is ZIP code 30078 in?

ZIP code 30078 is in Gwinnett County, Georgia (county FIPS code 13135).

What city is ZIP code 30078?

The primary USPS city for 30078 is Snellville, GA.

What metro area (MSA) is 30078 in?

30078 is part of the Atlanta-Sandy Springs-Roswell, GA Metro Area (MSA code 12060).

What is the population of ZIP code 30078?

The 2020 Census population of 30078 was 38,350 residents.

What is the median income in ZIP code 30078?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 30078 is about $45,635, with around 6% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.