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US ZIP Code Profile

ZIP Code 30557
Martin, Georgia

ZIP code 30557 is in Martin, located in Stephens County, Georgia, within the Toccoa metro area. Its 2020 Census population was 5,094. The estimated median adjusted gross income per tax return is $40,893, and about 4% of filers report $200,000 or more.

2020 Population
5,094
Census ZCTA
County
Stephens
FIPS 13257
Median income (est.)
$40,893
IRS SOI 2022
Land Area
55.753 mi²
+ 2.507 mi² water

01Location & Geography

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

Primary CityMartin, GA
CountyStephens County (FIPS 13257)
StateGeorgia (FIPS 13)
Metro Area (MSA)Toccoa, GA Micro Area (45740)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates34.47975, -83.184906
Land / Water Area55.753 mi² land · 2.507 mi² water

02Income & Economics

Distribution of the 2,330 individual tax returns filed in 30557 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
30.9%
$25K–$50K
30.0%
$50K–$75K
14.6%
$75K–$100K
8.6%
$100K–$200K
12.0%
$200K+
3.9%
The $200,000+ bracket accounts for 27% of 30557's total adjusted gross income, from 4% of returns — a concentration that drives the gap between the median ($40,893) 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 30557's IRS income metrics, 2020–2022.

Median income (2021→2022)
$40,893
▲ 9.0%
Filers earning $200K+
3.9%
▼ 0.2 pt
Total filers
2,330
▲ 5.4%
GET /zipc/v2/zipcodes/30557/soi?year=… $34K 2020 $38K 2021 $41K 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 30557 ZCTA.

2000
4,472
 
2010
4,975
▲ +11.2%
2020
5,094
▲ +2.4%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number125632
City AliasesMartin, Avalon

06Frequently Asked Questions

What county is ZIP code 30557 in?

ZIP code 30557 is in Stephens County, Georgia (county FIPS code 13257).

What city is ZIP code 30557?

The primary USPS city for 30557 is Martin, GA.

What metro area (MSA) is 30557 in?

30557 is part of the Toccoa, GA Micro Area (MSA code 45740).

What is the population of ZIP code 30557?

The 2020 Census population of 30557 was 5,094 residents.

What is the median income in ZIP code 30557?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 30557 is about $40,893, 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.