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US ZIP Code Profile

ZIP Code 31780
Plains, Georgia

ZIP code 31780 is in Plains, located in Sumter County, Georgia, within the Americus metro area. Its 2020 Census population was 1,821. The estimated median adjusted gross income per tax return is $36,875.

2020 Population
1,821
Census ZCTA
County
Sumter
FIPS 13261
Median income (est.)
$36,875
IRS SOI 2022
Land Area
99.79 mi²
+ 0.744 mi² water

01Location & Geography

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

Primary CityPlains, GA
CountySumter County (FIPS 13261)
StateGeorgia (FIPS 13)
Metro Area (MSA)Americus, GA Micro Area (11140)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates32.03187, -84.38881
Land / Water Area99.79 mi² land · 0.744 mi² water

02Income & Economics

Distribution of the 670 individual tax returns filed in 31780 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
35.8%
$25K–$50K
29.8%
$50K–$75K
14.9%
$75K–$100K
6.0%
$100K–$200K
13.4%
$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 31780's IRS income metrics, 2020–2022.

Median income (2021→2022)
$36,875
▲ 10.0%
Filers earning $200K+
0.0%
▲ 0.0 pt
Total filers
670
▼ 5.6%
GET /zipc/v2/zipcodes/31780/soi?year=… $32K 2020 $34K 2021 $37K 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 31780 ZCTA.

2000
2,313
 
2010
2,285
▼ -1.2%
2020
1,821
▼ -20.3%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number126952
City AliasesPlains

06Frequently Asked Questions

What county is ZIP code 31780 in?

ZIP code 31780 is in Sumter County, Georgia (county FIPS code 13261).

What city is ZIP code 31780?

The primary USPS city for 31780 is Plains, GA.

What metro area (MSA) is 31780 in?

31780 is part of the Americus, GA Micro Area (MSA code 11140).

What is the population of ZIP code 31780?

The 2020 Census population of 31780 was 1,821 residents.

What is the median income in ZIP code 31780?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 31780 is about $36,875. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.