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US ZIP Code Profile

ZIP Code 39666
Summit, Mississippi

ZIP code 39666 is in Summit, located in Pike County, Mississippi, within the McComb metro area. Its 2020 Census population was 10,467. The estimated median adjusted gross income per tax return is $40,125, and about 4% of filers report $200,000 or more.

2020 Population
10,467
Census ZCTA
County
Pike
FIPS 28113
Median income (est.)
$40,125
IRS SOI 2022
Land Area
155.745 mi²
+ 1.192 mi² water

01Location & Geography

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

Primary CitySummit, MS
CountyPike County (FIPS 28113)
StateMississippi (FIPS 28)
Metro Area (MSA)McComb, MS Micro Area (32620)
Census Region / DivisionSouth Region · East South Central Division
Coordinates31.294933, -90.48252
Land / Water Area155.745 mi² land · 1.192 mi² water

02Income & Economics

Distribution of the 4,210 individual tax returns filed in 39666 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
35.6%
$25K–$50K
23.8%
$50K–$75K
13.8%
$75K–$100K
9.3%
$100K–$200K
13.8%
$200K+
3.8%
The $200,000+ bracket accounts for 23% of 39666's total adjusted gross income, from 4% of returns — a concentration that drives the gap between the median ($40,125) 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 39666's IRS income metrics, 2020–2022.

Median income (2021→2022)
$40,125
▲ 7.0%
Filers earning $200K+
3.8%
▲ 0.6 pt
Total filers
4,210
▼ 2.5%
GET /zipc/v2/zipcodes/39666/soi?year=… $35K 2020 $38K 2021 $40K 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 39666 ZCTA.

2000
9,519
 
2010
9,588
▲ +0.7%
2020
10,467
▲ +9.2%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number277904
City AliasesIrene, Johnston, Mars Hill, Mcelveen, Pricedale, Summit, Topisaw

06Frequently Asked Questions

What county is ZIP code 39666 in?

ZIP code 39666 is in Pike County, Mississippi (county FIPS code 28113).

What city is ZIP code 39666?

The primary USPS city for 39666 is Summit, MS.

What metro area (MSA) is 39666 in?

39666 is part of the McComb, MS Micro Area (MSA code 32620).

What is the population of ZIP code 39666?

The 2020 Census population of 39666 was 10,467 residents.

What is the median income in ZIP code 39666?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 39666 is about $40,125, 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.