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County · code 47039

Decatur CountyTennessee

Decatur County is a Tennessee county of 334 square miles with its seat in Decaturville. It was created on April 6, 1846, from Henderson and Perry counties and named after Stephen Decatur.

  • Founded1846
  • County seatDecaturville
  • Named forStephen Decatur
  • Land area334 sq mi + 11 sq mi water
  • Population11,435 2020 Census
  • Parcels mapped14,112 checked 14 October 2026
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Updated

PerryHendersonHardinBentonWayneCarroll Decaturville Census outline · seat marked

Where it is

Decatur on the map of Tennessee

Tennessee has 95 counties and county equivalents, each with its own records office. Shapes with a page are links.

Anderson CountyBedford CountyBenton CountyBledsoe CountyBlount CountyBradley CountyCampbell CountyCannon CountyCarroll CountyCarter CountyCheatham CountyChester CountyClaiborne CountyClay CountyCocke CountyCoffee CountyCrockett CountyCumberland CountyDavidson CountyDeKalb CountyDickson CountyDyer CountyFayette CountyFentress CountyFranklin CountyGibson CountyGiles CountyGrainger CountyGreene CountyGrundy CountyHamblen CountyHamilton CountyHancock CountyHardeman CountyHardin CountyHawkins CountyHaywood CountyHenderson CountyHenry CountyHickman CountyHouston CountyHumphreys CountyJackson CountyJefferson CountyJohnson CountyKnox CountyLake CountyLauderdale CountyLawrence CountyLewis CountyLincoln CountyLoudon CountyMcMinn CountyMcNairy CountyMacon CountyMadison CountyMarion CountyMarshall CountyMaury CountyMeigs CountyMonroe CountyMontgomery CountyMoore CountyMorgan CountyObion CountyOverton CountyPerry CountyPickett CountyPolk CountyPutnam CountyRhea CountyRoane CountyRobertson CountyRutherford CountyScott CountySequatchie CountySevier CountyShelby CountySmith CountyStewart CountySullivan CountySumner CountyTipton CountyTrousdale CountyUnicoi CountyUnion CountyVan Buren CountyWarren CountyWashington CountyWayne CountyWeakley CountyWhite CountyWilliamson CountyWilson CountyDecatur County Decatur
Counties of Tennessee · Decatur highlighted

History

Formed in 1846 from Henderson County and Perry County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Decatur County was established in 1846 from Henderson and Perry counties. Over the following decades, the county gained and lost small areas through boundary adjustments with neighboring counties including Henderson, Perry, Hardin, Wayne, and Benton.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1846
    Decatur County created Decatur created from Henderson and Perry.
    from Hendersonfrom Perry
    · Tenn. Acts 1845, 26th assy., ch. 7, secs. 11-12, 18/pp. 38-39 and ch. 62, secs. 1, 7-8/pp. 122-123
  2. 1847
    Gained territory Decatur gained from Perry when boundary was changed from west bank to east bank of Tennessee River; Decatur lost to Henderson.
    from Perryfrom Henderson
    · Tenn. Acts 1847, 27th assy., ch. 15/p. 44
  3. 1856
    Exchanged territory Decatur exchanged with Hardin; Decatur gained from Henderson to accommodate local resident.
    with Hardinwith Henderson
    · Tenn. Acts 1855, 31st assy., ch. 173, secs. 1-5, 8-9/pp. 264-266
  4. 1869
    Gained territory Decatur gained small area from Wayne.
    from Wayne
    · Tenn. Acts 1868, 35th assy., 2d sess., pub., ch. 36/p. 48
  5. 1883
    Exchanged territory Decatur exchanged with Benton.
    with Benton
    · Tenn. Acts 1883, 43d assy., ch. 221/p. 299
Show all 15 changes (10 more, mostly small adjustments)
  1. 1846
    Decatur County created Decatur created from Henderson and Perry.
    from Hendersonfrom Perry
    · Tenn. Acts 1845, 26th assy., ch. 7, secs. 11-12, 18/pp. 38-39 and ch. 62, secs. 1, 7-8/pp. 122-123
  2. 1847
    Gained territory Decatur gained from Perry when boundary was changed from west bank to east bank of Tennessee River; Decatur lost to Henderson.
    from Perryfrom Henderson
    · Tenn. Acts 1847, 27th assy., ch. 15/p. 44
  3. 1849
    Boundary clarified Boundary between Decatur and Henderson clarified (no change).
    with Hendersonno change
    · Tenn. Acts 1849, 28th assy., ch. 92/p. 283
  4. 1852
    Changed Legislature authorized Decatur to gain from Hardin; did not take effect.
    Hardin
    · Tenn. Acts 1851, 29th assy., ch. 367, secs. 1-6/pp. 680-682; Tenn. Acts 1853, 30th assy., ch. 11/p. 46
  5. 1856
    Exchanged territory Decatur exchanged with Hardin; Decatur gained from Henderson to accommodate local resident.
    with Hardinwith Henderson
    · Tenn. Acts 1855, 31st assy., ch. 173, secs. 1-5, 8-9/pp. 264-266
  6. 1869
    Gained territory Decatur gained small area from Wayne.
    from Wayne
    · Tenn. Acts 1868, 35th assy., 2d sess., pub., ch. 36/p. 48
  7. 1872
    Gained territory Decatur gained Eagle Nest Island from Hardin; Decatur lost to Hardin to accommodate local resident.
    from Hardin
    · Tenn. Acts 1871, 37th assy., 1st sess., ch. 33/p. 31
  8. 1873
    Gained territory Decatur gained from Henderson to accommodate local residents.
    from Henderson
    · Tenn. Acts 1873, 38th assy., ch. 100/p. 134
  9. 1877
    Changed Legislature authorized creation of Hanes from Decatur and three other counties; creation did not take effect.
    Hanes
    · Tenn. Acts 1877, 40th assy., 1st sess., ch. 14, secs. 1-2, 4/pp. 21-22; McBride, 9
  10. 1877
    Gained territory Decatur gained from Benton to accommodate local resident.
    from Benton
    · Tenn. Acts 1877, 40th assy., 1st sess., ch. 58/p. 73
  11. 1881
    Lost territory Decatur lost small area to Henderson.
    to Henderson
    · Tenn. Acts 1881, 42d assy., 1st sess., ch. 130/p. 180
  12. 1883
    Exchanged territory Decatur exchanged with Benton.
    with Benton
    · Tenn. Acts 1883, 43d assy., ch. 221/p. 299
  13. 1885
    Gained territory Decatur gained from Henderson to accommodate local resident.
    from Hendersonfrom Decatur-Henderson
    · Tenn. Acts 1885, 44th assy., ch. 13/p. 55
  14. 1891
    Lost territory Decatur lost to Benton to accommodate local resident.
    to Benton
    · Tenn. Acts 1891, 47th assy., ch. 51/p. 134
  15. 1939
    Lost territory Decatur lost to Benton to accommodate local resident.
    to Benton
    · Tenn. Acts 1939, 71st assy., priv., ch. 600/p. 1902

Land and parcels

What the maps cover in Decatur

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

Decatur by the Census

Population
11,435 2020 Census count
Housing units
6,557 2020 Census count
Land area
334 square miles
Water area
11 square miles
People per sq mi
34 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Decatur County's official site

We have found the county's site but not its offices yet; start there.

County government

See your own lot on these maps

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Questions

Common questions about Decatur County

When was Decatur County founded?
Decatur County was founded in 1846, formed from Henderson County and Perry County, and named after Stephen Decatur.
What is the county seat of Decatur County?
The county seat of Decatur County is Decaturville.
Is there an online parcel map for Decatur County?
Yes. Tennessee Comptroller of the Treasury, Division of Property Assessments (published by the Office of Information Resources) publishes a parcel map of 14,112 parcels, rated official here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Decatur County's boundary or name changed?
Decatur County was created in 1846 from Henderson County and Perry County. Since then the Atlas of Historical County Boundaries records 13 later changes, most of them small boundary adjustments, chiefly involving Henderson County, Benton County and Hardin County.
Is my lot in a flood zone?
We do not have flood maps for Decatur County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door