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US ZIP Code Profile

ZIP Code 31324
Richmond Hill, Georgia

ZIP code 31324 is in Richmond Hill, located in Bryan County, Georgia, within the Savannah metro area. Its 2020 Census population was 33,733. The estimated median adjusted gross income per tax return is $68,256, and about 9% of filers report $200,000 or more.

2020 Population
33,733
Census ZCTA
County
Bryan
FIPS 13029
Median income (est.)
$68,256
IRS SOI 2022
Land Area
128.183 mi²
+ 14.319 mi² water

01Location & Geography

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

Primary CityRichmond Hill, GA
CountyBryan County (FIPS 13029)
StateGeorgia (FIPS 13)
Metro Area (MSA)Savannah, GA Metro Area (42340)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates31.850203, -81.264824
Land / Water Area128.183 mi² land · 14.319 mi² water

02Income & Economics

Distribution of the 15,720 individual tax returns filed in 31324 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
21.8%
$25K–$50K
18.3%
$50K–$75K
13.7%
$75K–$100K
11.4%
$100K–$200K
25.8%
$200K+
9.1%
The $200,000+ bracket accounts for 38% of 31324's total adjusted gross income, from 9% of returns — a concentration that drives the gap between the median ($68,256) 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 31324's IRS income metrics, 2020–2022.

Median income (2021→2022)
$68,256
▲ 6.8%
Filers earning $200K+
9.1%
▲ 1.3 pt
Total filers
15,720
▲ 3.8%
GET /zipc/v2/zipcodes/31324/soi?year=… $59K 2020 $64K 2021 $68K 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 31324 ZCTA.

2000
14,508
 
2010
20,495
▲ +41.3%
2020
33,733
▲ +64.6%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number127381
City AliasesRichmond Hill

06Frequently Asked Questions

What county is ZIP code 31324 in?

ZIP code 31324 is in Bryan County, Georgia (county FIPS code 13029).

What city is ZIP code 31324?

The primary USPS city for 31324 is Richmond Hill, GA.

What metro area (MSA) is 31324 in?

31324 is part of the Savannah, GA Metro Area (MSA code 42340).

What is the population of ZIP code 31324?

The 2020 Census population of 31324 was 33,733 residents.

What is the median income in ZIP code 31324?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 31324 is about $68,256, with around 9% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.