County Maps US

Marion County, Tennessee

A county in Tennessee, ranked 51 of 95 by population.

CountyFIPS 47115

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

Download SVGFull Tennessee map downloads

Population
29,804
+930 (+3.2%) since 2020
Land area
498.3
square miles. A further 2.7% of the total area is water
Population density
59.8
people per square mile, computed rather than published
County seat
Jasper
Seat of county government.
Established
1817
208 years ago
Largest city
Jasper town
Population 3,636.

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 Marion 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 Marion 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 660 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 Marion 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
Population29,80451st of 951,452nd of 3,144
Land area498.3 sq mi39th of 952,091st of 3,144
Population density59.8 per sq mi59th of 951,309th of 3,144
Median household income$61,82439th of 951,912th of 3,143

Full data for Marion County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population29,804Vintage 2025 Population Estimates
Population in 202028,874Vintage 2025 Population Estimates
2020 estimates base?28,841Vintage 2025 Population Estimates
Land area498.3 sq mi2025 Gazetteer Files
Water area14.1 sq mi2025 Gazetteer Files
Total area512.3 sq mi2025 Gazetteer Files
Population density?59.8 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$61,824American Community Survey 2020-2024 5-Year Estimates
Median home value$195,200American Community Survey 2020-2024 5-Year Estimates
Median age43.8American Community Survey 2020-2024 5-Year Estimates
Households11,869American Community Survey 2020-2024 5-Year Estimates
Housing units14,058American 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
-180
295 births, 475 deaths
Net migration
+222
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 6 areas bordering Marion 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
Grundy CountyTennessee25 mi14,116
Sequatchie CountyTennessee18 mi17,861
Hamilton CountyTennessee17 mi390,833
Franklin CountyTennessee17 mi45,579
Jackson CountyAlabama15 mi54,281
Dade CountyGeorgia7.4 mi16,154

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.