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County · code 47105

Loudon CountyTennessee

Loudon County, Tennessee was formed on June 18, 1870, from parts of Blount, Monroe, and Roane counties, with Loudon as its county seat. It was created as Christiana but renamed Loudon just three weeks later on July 7, 1870, after Fort Loudoun.

  • Founded1870
  • County seatLoudon
  • Named forFort Loudoun, Tennessee
  • Land area229 sq mi + 18 sq mi water
  • Population54,886 2020 Census
  • Parcels mapped36,399 checked 14 October 2026
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Updated

RoaneMonroeBlountMcMinnKnox Loudon Census outline · seat marked

Where it is

Loudon 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 CountyDecatur 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 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 CountyLoudon County Loudon
Counties of Tennessee · Loudon highlighted

History

Formed in 1870 from Blount County, Monroe County and Roane County

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

After its creation in 1870, Loudon County's boundaries shifted frequently over the next decade as local residents requested accommodations. Between 1870 and 1881, the county gained and lost territory multiple times in exchanges with Blount, Monroe, Roane, and McMinn counties.

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

  1. 1870
    Loudon County created Christiana (now Loudon) created from Blount, Monroe, and Roane.
    from Blountfrom Monroefrom Roane
    · Tenn. Acts 1870, 36th assy., 2d sess., ch. 2, secs. 1-2, 4/pp. 4, 6 and ch. 77/p. 123
  2. 1870
    Renamed Christiana renamed Loudon; Loudon gained from Monroe to accommodate local resident.
    formerly Christiana
    · Tenn. Acts 1870, 36th assy., 2d sess., ch. 77/p. 123
  3. 1871
    Exchanged territory Loudon exchanged with Monroe to accommodate local residents.
    with Monroe
    · Tenn. Acts 1870, 36th assy., 3d sess., ch. 53/p. 63
  4. 1871
    Lost territory Loudon lost to Roane to accommodate local residents.
    to Roane
    · Tenn. Acts 1870, 36th assy., 3d sess., ch. 18, secs. 1, 3-7/pp. 20-22
  5. 1875
    Gained territory Loudon gained from Roane to accommodate local residents.
    from Roane
    · Tenn. Acts 1875, 39th assy., ch. 140, secs. 1-5/pp. 228-230
Show all 35 changes (30 more, mostly small adjustments)
  1. 1870
    Loudon County created Christiana (now Loudon) created from Blount, Monroe, and Roane.
    from Blountfrom Monroefrom Roane
    · Tenn. Acts 1870, 36th assy., 2d sess., ch. 2, secs. 1-2, 4/pp. 4, 6 and ch. 77/p. 123
  2. 1870
    Renamed Christiana renamed Loudon; Loudon gained from Monroe to accommodate local resident.
    formerly Christiana
    · Tenn. Acts 1870, 36th assy., 2d sess., ch. 77/p. 123
  3. 1871
    Exchanged territory Loudon exchanged with Monroe to accommodate local residents.
    with Monroe
    · Tenn. Acts 1870, 36th assy., 3d sess., ch. 53/p. 63
  4. 1871
    Lost territory Loudon lost to Roane to accommodate local residents.
    to Roane
    · Tenn. Acts 1870, 36th assy., 3d sess., ch. 18, secs. 1, 3-7/pp. 20-22
  5. 1871
    Gained territory Loudon gained from Roane to accommodate local residents.
    from Roane
    · Tenn. Acts 1870, 36th assy., 3d sess., ch. 118/p. 136
  6. 1871
    Lost territory Loudon lost to Monroe to accommodate local residents.
    to Monroe
    · Tenn. Acts 1871, 37th assy., 1st sess., ch. 91/p. 82; Tenn. Acts 1872, 37th assy., call sess., ch. 19/p. 42
  7. 1873
    Gained territory Loudon gained from McMinn to accommodate local residents. Loudon exchanged with Monroe to accommodate local residents.
    from McMinnfrom Monroe
    · Tenn. Acts 1873, 38th assy., ch. 89/p. 125; ch. 86/p. 123
  8. 1875
    Gained territory Loudon gained from Roane to accommodate local residents.
    from Roane
    · Tenn. Acts 1875, 39th assy., ch. 140, secs. 1-5/pp. 228-230
  9. 1877
    Lost territory Loudon lost to Monroe to accommodate local resident.
    to Monroe
    · Tenn. Acts 1877, 40th assy., 1st sess., ch. 163/p. 186
  10. 1879
    Gained territory Loudon gained from McMinn and Roane to accommodate local residents; Loudon lost to Monroe to accommodate local resident.
    from McMinnfrom Roanefrom Monroe
    · Tenn. Acts 1879, 41st assy., 1st sess., ch. 137, secs. 1-17/pp. 174-177
  11. 1881
    Gained territory Loudon gained from McMinn to accommodate local resident.
    from McMinn
    · Tenn. Acts 1881, 42d assy., 1st sess., ch. 61/p. 75
  12. 1881
    Gained territory Loudon gained from Roane to accommodate local residents.
    from Roane
    · Tenn. Acts 1881, 42d assy., 1st sess., ch. 138/p. 187
  13. 1883
    Lost territory Loudon lost to Roane to accommodate local resident.
    to Roaneto Loudon-Roane
    · Tenn. Acts 1883, 43d assy., ch. 8/p. 11
  14. 1883
    Lost territory Loudon lost to Blount to accommodate local residents.
    to Blount
    · Tenn. Acts 1883, 43d assy., ch. 217/p. 294
  15. 1885
    Gained territory Loudon gained from McMinn to accommodate local resident. Loudon lost to Monroe to accommodate local resident.
    from McMinnfrom Monroe
    · Tenn. Acts 1885, 44th assy., ch. 54/p. 110; ch. 56/p. 111
  16. 1887
    Exchanged territory Loudon exchanged with Monroe to accommodate local residents (later repealed).
    with Monroe
    · Tenn. Acts 1887, 45th assy., ch. 196/p. 327
  17. 1889
    Lost territory Loudon lost to Monroe to accommodate local resident.
    to Monroe
    · Tenn. Acts 1889, 46th assy., 1st sess., ch. 58/p. 89
  18. 1889
    Lost territory Loudon lost to Monroe to accommodate local residents.
    to Monroe
    · Tenn. Acts 1889, 46th assy., 1st sess., ch. 199/p. 394
  19. 1889
    Gained territory Loudon gained from Monroe to accommodate local resident.
    from Monroe
    · Tenn. Acts 1889, 46th assy., 1st sess., ch. 235/p. 457
  20. 1891
    Lost territory Loudon lost to Monroe to accommodate local resident.
    to Monroe
    · Tenn. Acts 1891, 47th assy., ch. 67/p. 154
  21. 1891
    Exchanged territory Loudon exchanged with Monroe to accommodate local residents (later repealed).
    with Monroe
    · Tenn. Acts 1891, 47th assy., ch. 214/p. 424
  22. 1895
    Exchanged territory Loudon exchanged with Monroe to accommodate local residents.
    with Monroe
    · Tenn. Acts 1895, 49th assy., ch. 27/p. 39
  23. 1897
    Gained territory Loudon gained from Monroe to accommodate local residents.
    from Monroe
    · Tenn. Acts 1897, 50th assy., ch. 206/p. 424
  24. 1897
    Gained territory Loudon gained from Monroe to accommodate local resident.
    from Monroe
    · Tenn. Acts 1897, 50th assy., ch. 169/p. 378
  25. 1897
    Gained territory Loudon gained from McMinn to accommodate local resident.
    from McMinn
    · Tenn. Acts 1897, 50th assy., ch. 168/p. 377
  26. 1901
    Gained territory Loudon gained from Monroe to accommodate local resident.
    from Monroe
    · Tenn. Acts 1901, 52d assy., ch. 306/p. 689
  27. 1901
    Gained territory Loudon gained from McMinn to accommodate local resident.
    from McMinn
    · Tenn. Acts 1901, 52d assy., ch. 347/p. 796
  28. 1903
    Gained territory Loudon gained from Monroe to accommodate local resident.
    from Monroe
    · Tenn. Acts 1903, 53d assy., ch. 95/p. 176
  29. 1905
    Lost territory Loudon lost to Monroe to accommodate local resident.
    to Monroe
    · Tenn. Acts 1905, 54th assy., ch. 37/p. 82
  30. 1927
    Gained territory Loudon gained from Monroe to accommodate local residents.
    from Monroe
    · Tenn. Acts 1927, 65th assy., priv., ch. 124/p. 273
  31. 1929
    Lost territory Loudon lost to McMinn to accommodate local residents.
    to McMinn
    · Tenn. Acts 1929, 66th assy., priv., ch. 184/p. 388
  32. 1931
    Gained territory Loudon gained from Monroe to accommodate local resident.
    from Monroe
    · Tenn. Acts 1931, 67th assy., priv., ch. 767/p. 2040
  33. 1933
    Gained territory Loudon gained from Monroe to accommodate local resident.
    from Monroe
    · Tenn. Acts 1933, 68th assy., priv., ch. 175/p. 461
  34. 1939
    Gained territory Loudon gained from Monroe to accommodate local residents.
    from Monroefrom Loudon-Monroe
    · Tenn. Acts 1939, 71st assy., priv., ch. 604, secs. 1-3/pp. 1914-1916
  35. 1951
    Gained territory Loudon gained from McMinn to accommodate local residents.
    from McMinnfrom Loudon-McMinn
    · Tenn. Acts 1951, 77th assy., priv., ch. 346/p. 922

Land and parcels

What the maps cover in Loudon

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

Loudon by the Census

Population
54,886 2020 Census count
Housing units
24,559 2020 Census count
Land area
229 square miles
Water area
18 square miles
People per sq mi
239 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

Loudon 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 Loudon County

When was Loudon County founded?
Loudon County was founded in 1870, formed from Blount County, Monroe County and Roane County, and named after Fort Loudoun, Tennessee.
What is the county seat of Loudon County?
The county seat of Loudon County is Loudon.
Is there an online parcel map for Loudon County?
Yes. Tennessee Comptroller of the Treasury, Division of Property Assessments (published by the Office of Information Resources) publishes a parcel map of 36,399 parcels, rated official here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Loudon County's boundary or name changed?
Loudon County was created in 1870 from Blount County, Monroe County and Roane County. Since then the Atlas of Historical County Boundaries records 34 later changes, most of them small boundary adjustments, chiefly involving Monroe County, McMinn County and Roane County. It was formerly called Christiana.
Is my lot in a flood zone?
We do not have flood maps for Loudon 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