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US ZIP Code Profile

ZIP Code 31787
Smithville, Georgia

ZIP code 31787 is in Smithville, located in Lee County, Georgia, within the Albany metro area. Its 2020 Census population was 1,511. The estimated median adjusted gross income per tax return is $35,938.

2020 Population
1,511
Census ZCTA
County
Lee
FIPS 13177
Median income (est.)
$35,938
IRS SOI 2022
Land Area
88.238 mi²
+ 0.855 mi² water

01Location & Geography

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

Primary CitySmithville, GA
CountyLee County (FIPS 13177)
StateGeorgia (FIPS 13)
Metro Area (MSA)Albany, GA Metro Area (10500)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates31.89918, -84.24332
Land / Water Area88.238 mi² land · 0.855 mi² water

02Income & Economics

Distribution of the 600 individual tax returns filed in 31787 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
38.3%
$25K–$50K
26.7%
$50K–$75K
15.0%
$75K–$100K
6.7%
$100K–$200K
13.3%
$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 31787's IRS income metrics, 2020–2022.

Median income (2021→2022)
$35,938
▲ 5.9%
Filers earning $200K+
0.0%
▲ 0.0 pt
Total filers
600
▲ 3.4%
GET /zipc/v2/zipcodes/31787/soi?year=… $34K 2020 $34K 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 31787 ZCTA.

2000
1,829
 
2010
1,488
▼ -18.6%
2020
1,511
▲ +1.5%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number128008
City AliasesSmithville

06Frequently Asked Questions

What county is ZIP code 31787 in?

ZIP code 31787 is in Lee County, Georgia (county FIPS code 13177).

What city is ZIP code 31787?

The primary USPS city for 31787 is Smithville, GA.

What metro area (MSA) is 31787 in?

31787 is part of the Albany, GA Metro Area (MSA code 10500).

What is the population of ZIP code 31787?

The 2020 Census population of 31787 was 1,511 residents.

What is the median income in ZIP code 31787?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 31787 is about $35,938. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.