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US ZIP Code Profile

ZIP Code 30257
Milner, Georgia

ZIP code 30257 is in Milner, located in Lamar County, Georgia, within the Atlanta-Sandy Springs-Roswell metro area. Its 2020 Census population was 4,608. The estimated median adjusted gross income per tax return is $48,016, and about 3% of filers report $200,000 or more.

2020 Population
4,608
Census ZCTA
County
Lamar
FIPS 13171
Median income (est.)
$48,016
IRS SOI 2022
Land Area
44.18 mi²
+ 0.846 mi² water

01Location & Geography

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

Primary CityMilner, GA
CountyLamar County (FIPS 13171)
StateGeorgia (FIPS 13)
Metro Area (MSA)Atlanta-Sandy Springs-Roswell, GA Metro Area (12060)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates33.143414, -84.18622
Land / Water Area44.18 mi² land · 0.846 mi² water

02Income & Economics

Distribution of the 2,680 individual tax returns filed in 30257 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
28.4%
$25K–$50K
23.5%
$50K–$75K
17.5%
$75K–$100K
11.9%
$100K–$200K
15.3%
$200K+
3.4%
The $200,000+ bracket accounts for 18% of 30257's total adjusted gross income, from 3% of returns — a concentration that drives the gap between the median ($48,016) 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 30257's IRS income metrics, 2020–2022.

Median income (2021→2022)
$48,016
▲ 2.1%
Filers earning $200K+
3.4%
▲ 0.4 pt
Total filers
2,680
▲ 11.7%
GET /zipc/v2/zipcodes/30257/soi?year=… $43K 2020 $47K 2021 $48K 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 30257 ZCTA.

2000
3,188
 
2010
4,138
▲ +29.8%
2020
4,608
▲ +11.4%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number125940
City AliasesMilner

06Frequently Asked Questions

What county is ZIP code 30257 in?

ZIP code 30257 is in Lamar County, Georgia (county FIPS code 13171).

What city is ZIP code 30257?

The primary USPS city for 30257 is Milner, GA.

What metro area (MSA) is 30257 in?

30257 is part of the Atlanta-Sandy Springs-Roswell, GA Metro Area (MSA code 12060).

What is the population of ZIP code 30257?

The 2020 Census population of 30257 was 4,608 residents.

What is the median income in ZIP code 30257?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 30257 is about $48,016, with around 3% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.