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Decatur city, AL

ZIP Code 35671 — Decatur city, AL Demographics & Data

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Middle ClassLow Snow Area

Map, Quick Facts & Location

Quick Facts

Local time
Population
1,907
Median Income
$84,467
+12% vs US avg
Home Value
$251,400
-28% vs US avg
Median Rent
$435
-63% vs US avg
Median Age
53.4 yrs
+37% vs US avg
Area Code
Congress
Top Ancestry
AmericanEnglishIrish
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Location
Coordinates
34.6854, -86.9354
Elevation
592 ft
Land Area
52.7 sq mi
Water Area
21.1 sq mi (29% water)

At a glance

Population
1,907
Density
N/A
Median income
$84,467
+12% vs US avg
Home value
$251,400
-28% vs US avg
Median rent
$435
-63% vs US avg
Timezone

Overview of ZIP Code 35671

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What to know about ZIP 35671

ZIP code 35671 covers Decatur, AL in Limestone County with a population of about 1,907.

At a glance, the area shows median age of 53.4 versus a U.S. median of about 38.9.

It sits in telephone area codes 256, 938; U.S. House district AL-5; the HUNTSVILLE - DECATUR (FLOR) media market.

Income and economy in Decatur, AL

Median household income in ZIP 35671 is about $84,467 — about 12% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 6.1%; unemployment rate near 5.8%; 20.6% of adults with a bachelor’s degree or higher (about 13.1 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Professional services, Administrative support, and Healthcare; a mean commute of about 180.0 minutes (U.S. average near 26.8).

Housing and affordability in ZIP 35671

Median home value is about $251,400 — about 28% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $435 (about 63% below the U.S. median rent ($1,163)), and owner-occupancy near 80.3% (about 14.9 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 35671 in Decatur, AL, a household would need roughly $69,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $1,615. That sits below the local median household income ($84,467), suggesting the typical household income is closer to a workable buy-in level under these assumptions. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

Climate risk and migration signals

FEMA’s National Risk Index rates natural-hazard risk for Decatur city, AL as Relatively Low (composite score 80.0), which is elevated versus much of the country. The strongest component scores on US5 are flood (76.7) and hurricane (60.2). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Decatur city, AL show little to no average snow and around 49.5 inches of annual precipitation.

IRS migration statistics show a net inflow of about 61 for ZIP 35671 (Decatur city, AL) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.

Nearby (from this ZIP)

Airport HSV (9.8 miles (15.7 km)) · John C Calhoun State Community College (2.9 miles (4.6 km)) · Russell Cave National Monument (66.6 miles (107.1 km)) · VA: Redstone Arsenal (10.0 miles (16.1 km))

Full lists and map pins are in the Infrastructure section below.