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US ZIP Code Profile

ZIP Code 35661
Muscle Shoals, Alabama

ZIP code 35661 is in Muscle Shoals, located in Colbert County, Alabama, within the Florence-Muscle Shoals metro area. Its 2020 Census population was 18,714. The estimated median adjusted gross income per tax return is $49,615, and about 5% of filers report $200,000 or more.

2020 Population
18,714
Census ZCTA
County
Colbert
FIPS 01033
Median income (est.)
$49,615
IRS SOI 2022
Land Area
56.128 mi²
+ 9.429 mi² water

01Location & Geography

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

Primary CityMuscle Shoals, AL
CountyColbert County (FIPS 01033)
StateAlabama (FIPS 01)
Metro Area (MSA)Florence-Muscle Shoals, AL Metro Area (22520)
Census Region / DivisionSouth Region · East South Central Division
Coordinates34.768524, -87.562805
Land / Water Area56.128 mi² land · 9.429 mi² water

02Income & Economics

Distribution of the 8,260 individual tax returns filed in 35661 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
26.8%
$25K–$50K
23.6%
$50K–$75K
16.0%
$75K–$100K
11.4%
$100K–$200K
17.2%
$200K+
5.1%
The $200,000+ bracket accounts for 33% of 35661's total adjusted gross income, from 5% of returns — a concentration that drives the gap between the median ($49,615) 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 35661's IRS income metrics, 2020–2022.

Median income (2021→2022)
$49,615
▲ 6.9%
Filers earning $200K+
5.1%
▲ 0.1 pt
Total filers
8,260
▲ 1.3%
GET /zipc/v2/zipcodes/35661/soi?year=… $43K 2020 $46K 2021 $50K 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 35661 ZCTA.

2000
16,104
 
2010
16,617
▲ +3.2%
2020
18,714
▲ +12.6%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number015840
City AliasesMuscle Shoals

06Frequently Asked Questions

What county is ZIP code 35661 in?

ZIP code 35661 is in Colbert County, Alabama (county FIPS code 01033).

What city is ZIP code 35661?

The primary USPS city for 35661 is Muscle Shoals, AL.

What metro area (MSA) is 35661 in?

35661 is part of the Florence-Muscle Shoals, AL Metro Area (MSA code 22520).

What is the population of ZIP code 35661?

The 2020 Census population of 35661 was 18,714 residents.

What is the median income in ZIP code 35661?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 35661 is about $49,615, with around 5% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.