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US ZIP Code Profile

ZIP Code 31042
Irwinton, Georgia

ZIP code 31042 is in Irwinton, located in Wilkinson County, Georgia. Its 2020 Census population was 1,507. The estimated median adjusted gross income per tax return is $33,333.

2020 Population
1,507
Census ZCTA
County
Wilkinson
FIPS 13319
Median income (est.)
$33,333
IRS SOI 2022
Land Area
96.92 mi²
+ 0.112 mi² water

01Location & Geography

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

Primary CityIrwinton, GA
CountyWilkinson County (FIPS 13319)
StateGeorgia (FIPS 13)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates32.761345, -83.17686
Land / Water Area96.92 mi² land · 0.112 mi² water

02Income & Economics

Distribution of the 740 individual tax returns filed in 31042 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
40.5%
$25K–$50K
28.4%
$50K–$75K
13.5%
$75K–$100K
8.1%
$100K–$200K
9.5%
$200K+
0.0%
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 31042's IRS income metrics, 2020–2022.

Median income (2021→2022)
$33,333
▲ 2.9%
Filers earning $200K+
0.0%
▲ 0.0 pt
Total filers
740
▲ 1.4%
GET /zipc/v2/zipcodes/31042/soi?year=… $31K 2020 $32K 2021 $33K 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 31042 ZCTA.

2000
2,136
 
2010
1,841
▼ -13.8%
2020
1,507
▼ -18.1%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number124554
City AliasesIrwinton

06Frequently Asked Questions

What county is ZIP code 31042 in?

ZIP code 31042 is in Wilkinson County, Georgia (county FIPS code 13319).

What city is ZIP code 31042?

The primary USPS city for 31042 is Irwinton, GA.

What is the population of ZIP code 31042?

The 2020 Census population of 31042 was 1,507 residents.

What is the median income in ZIP code 31042?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 31042 is about $33,333. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.