County Maps US

Morgan County, Alabama

A county in Alabama, ranked 9 of 67 by population.

CountyFIPS 01103

Within Alabama
Morgan County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Decatur, the county seat, located via the 2025 Census Gazetteer.

Download SVGFull Alabama map downloads

Population
126,483
+3,162 (+2.6%) since 2020
Land area
579.7
square miles. A further 3.2% of the total area is water
Population density
218
people per square mile, computed rather than published
County seat
Decatur
Seat of county government.
Established
1818
207 years ago
Largest city
Decatur city
Population 57,995 for the whole place, which extends beyond this county.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Morgan County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Morgan County, Alabama from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 676 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Morgan County ranks

Position among the 67 counties of Alabama, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn AlabamaNationally
Population126,4839th of 67517th of 3,144
Land area579.7 sq mi59th of 671,702nd of 3,144
Population density218 per sq mi7th of 67539th of 3,144
Median household income$68,8458th of 671,279th of 3,143

Full data for Morgan County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population126,483Vintage 2025 Population Estimates
Population in 2020123,321Vintage 2025 Population Estimates
2020 estimates base?123,439Vintage 2025 Population Estimates
Land area579.7 sq mi2025 Gazetteer Files
Water area19.4 sq mi2025 Gazetteer Files
Total area599.1 sq mi2025 Gazetteer Files
Population density?218 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$68,845American Community Survey 2020-2024 5-Year Estimates
Median home value$212,000American Community Survey 2020-2024 5-Year Estimates
Median age40.0American Community Survey 2020-2024 5-Year Estimates
Households49,040American Community Survey 2020-2024 5-Year Estimates
Housing units53,905American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+35
1,515 births, 1,480 deaths
Net migration
+193
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 5 areas bordering Morgan County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Cullman CountyAlabama30 mi94,009
Lawrence CountyAlabama26 mi33,843
Limestone CountyAlabama21 mi122,928
Madison CountyAlabama19 mi433,516
Marshall CountyAlabama17 mi103,537

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 67 counties of Alabama

Open the interactive Alabama county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.