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US ZIP Code Profile

ZIP Code 31321
Pembroke, Georgia

ZIP code 31321 is in Pembroke, located in Bryan County, Georgia, within the Savannah metro area. Its 2020 Census population was 6,974. The estimated median adjusted gross income per tax return is $43,750, and about 3% of filers report $200,000 or more.

2020 Population
6,974
Census ZCTA
County
Bryan
FIPS 13029
Median income (est.)
$43,750
IRS SOI 2022
Land Area
138.679 mi²
+ 0.721 mi² water

01Location & Geography

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

Primary CityPembroke, GA
CountyBryan County (FIPS 13029)
StateGeorgia (FIPS 13)
Metro Area (MSA)Savannah, GA Metro Area (42340)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates32.185062, -81.6598
Land / Water Area138.679 mi² land · 0.721 mi² water

02Income & Economics

Distribution of the 3,050 individual tax returns filed in 31321 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
29.8%
$25K–$50K
26.9%
$50K–$75K
15.4%
$75K–$100K
9.8%
$100K–$200K
15.4%
$200K+
2.6%
The $200,000+ bracket accounts for 21% of 31321's total adjusted gross income, from 3% of returns — a concentration that drives the gap between the median ($43,750) 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 31321's IRS income metrics, 2020–2022.

Median income (2021→2022)
$43,750
▲ 8.2%
Filers earning $200K+
2.6%
▼ 0.3 pt
Total filers
3,050
▼ 0.3%
GET /zipc/v2/zipcodes/31321/soi?year=… $38K 2020 $40K 2021 $44K 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 31321 ZCTA.

2000
5,782
 
2010
6,326
▲ +9.4%
2020
6,974
▲ +10.2%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number126743
City AliasesPembroke, Nevils

06Frequently Asked Questions

What county is ZIP code 31321 in?

ZIP code 31321 is in Bryan County, Georgia (county FIPS code 13029).

What city is ZIP code 31321?

The primary USPS city for 31321 is Pembroke, GA.

What metro area (MSA) is 31321 in?

31321 is part of the Savannah, GA Metro Area (MSA code 42340).

What is the population of ZIP code 31321?

The 2020 Census population of 31321 was 6,974 residents.

What is the median income in ZIP code 31321?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 31321 is about $43,750, 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.