Get API Key →
US ZIP Code Profile

ZIP Code 31021
Dublin, Georgia

ZIP code 31021 is in Dublin, located in Laurens County, Georgia, within the Dublin metro area. Its 2020 Census population was 29,051. The estimated median adjusted gross income per tax return is $36,012, and about 4% of filers report $200,000 or more.

2020 Population
29,051
Census ZCTA
County
Laurens
FIPS 13175
Median income (est.)
$36,012
IRS SOI 2022
Land Area
239.45 mi²
+ 2.87 mi² water

01Location & Geography

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

Primary CityDublin, GA
CountyLaurens County (FIPS 13175)
StateGeorgia (FIPS 13)
Metro Area (MSA)Dublin, GA Micro Area (20140)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates32.493465, -82.94308
Land / Water Area239.45 mi² land · 2.87 mi² water

02Income & Economics

Distribution of the 11,590 individual tax returns filed in 31021 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
38.8%
$25K–$50K
25.4%
$50K–$75K
12.2%
$75K–$100K
7.5%
$100K–$200K
11.9%
$200K+
4.1%
The $200,000+ bracket accounts for 29% of 31021's total adjusted gross income, from 4% of returns — a concentration that drives the gap between the median ($36,012) 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 31021's IRS income metrics, 2020–2022.

Median income (2021→2022)
$36,012
▲ 7.9%
Filers earning $200K+
4.1%
▲ 0.3 pt
Total filers
11,590
▼ 1.3%
GET /zipc/v2/zipcodes/31021/soi?year=… $32K 2020 $33K 2021 $36K 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 31021 ZCTA.

2000
27,457
 
2010
28,549
▲ +4.0%
2020
29,051
▲ +1.8%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number122728
City AliasesDublin, Lollie

06Frequently Asked Questions

What county is ZIP code 31021 in?

ZIP code 31021 is in Laurens County, Georgia (county FIPS code 13175).

What city is ZIP code 31021?

The primary USPS city for 31021 is Dublin, GA.

What metro area (MSA) is 31021 in?

31021 is part of the Dublin, GA Micro Area (MSA code 20140).

What is the population of ZIP code 31021?

The 2020 Census population of 31021 was 29,051 residents.

What is the median income in ZIP code 31021?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 31021 is about $36,012, 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.