County Maps US

Dyer County, Tennessee

A county in Tennessee, ranked 44 of 95 by population.

CountyFIPS 47045

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

Download SVGFull Tennessee map downloads

Population
36,320
-390 (-1.1%) since 2020
Land area
512.4
square miles. A further 2.6% of the total area is water
Population density
70.9
people per square mile, computed rather than published
County seat
Dyersburg
Seat of county government.
Established
1823
202 years ago
Largest city
Dyersburg city
Population 15,906.

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 Dyer 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 Dyer County, Tennessee 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 592 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 Dyer County ranks

Position among the 95 counties of Tennessee, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn TennesseeNationally
Population36,32044th of 951,290th of 3,144
Land area512.4 sq mi35th of 952,033rd of 3,144
Population density70.9 per sq mi52nd of 951,171st of 3,144
Median household income$58,15453rd of 952,250th of 3,143

Full data for Dyer County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population36,320Vintage 2025 Population Estimates
Population in 202036,710Vintage 2025 Population Estimates
2020 estimates base?36,799Vintage 2025 Population Estimates
Land area512.4 sq mi2025 Gazetteer Files
Water area13.8 sq mi2025 Gazetteer Files
Total area526.2 sq mi2025 Gazetteer Files
Population density?70.9 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$58,154American Community Survey 2020-2024 5-Year Estimates
Median home value$166,400American Community Survey 2020-2024 5-Year Estimates
Median age40.2American Community Survey 2020-2024 5-Year Estimates
Households14,769American Community Survey 2020-2024 5-Year Estimates
Housing units16,311American 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
-45
436 births, 481 deaths
Net migration
-122
More people moved out than moved in.

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

The 7 areas bordering Dyer 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
Lauderdale CountyTennessee30 mi24,617
Obion CountyTennessee18 mi30,067
Gibson CountyTennessee18 mi51,779
Pemiscot CountyMissouri18 mi14,465
Crockett CountyTennessee14 mi14,006
Lake CountyTennessee9.8 mi6,249
Mississippi CountyArkansas9.0 mi37,828

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

All 95 counties of Tennessee

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

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