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County · code 20193

Thomas CountyKansas

Thomas County is a county in Kansas, with its seat at Colby. It was formed on March 20, 1873, from Rooks County.

  • Founded1873
  • County seatColby
  • Named forGeorge Henry Thomas
  • Land area1,075 sq mi + 0.1 sq mi water
  • Population7,930 2020 Census
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Updated

RawlinsLoganSheridanSherman Colby Census outline · seat marked

Where it is

Thomas on the map of Kansas

Kansas has 105 counties and county equivalents, each with its own records office. Shapes with a page are links.

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Counties of Kansas · Thomas highlighted

History

Formed in 1873 from Rooks County

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

Thomas County was created from Non-County Area 6 and Rooks County on March 20, 1873, but was not fully organized and was attached to Rooks for judicial purposes. It lost territory to Wallace County in 1879 before gaining it back in 1881. Thomas County was fully organized on October 8, 1885, when it was detached from Sheridan County. Sherman County was organized and detached from Thomas County on September 20, 1886.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

  1. 1873
    Thomas County created Thomas created from Non-County Area 6; Thomas not fully organized, attached to Rooks "for judicial purposes."
    from Rooks
    · Kans. Laws 1873, 13th leg., ch. 72, sec. 5/p. 147 and ch. 76, sec. 2/p. 160
  2. 1879
    Lost territory Thomas lost to Wallace.
    to Wallace
    · Kans. Laws 1879, 18th leg., ch. 72, sec. 4/p. 143
  3. 1881
    Changed Thomas detached from Rooks, attached to Sheridan "for judicial purposes."
    RooksSheridan
    · Kans. Laws 1881, 19th leg., ch. 100, sec. 3/p. 202
  4. 1881
    Gained territory Thomas gained from Wallace.
    from Wallace
    · Kans. Laws 1881, 19th leg., ch. 48, sec. 3/p. 132
  5. 1885
    Changed Thomas fully organized, detached from Sheridan.
    Sheridan
    · Kansas Counties, KSHS, http://www.kshs.org/genealogists/places/counties.htm, 20 October 2004
  6. 1886
    Changed Sherman fully organized, detached from Thomas.
    Sherman
    · Blue Skyways, http://skyways.lib.ks.us/counties, 23 November 2004; Kans. Laws 1887, 22d leg., ch. 122/p. 178

Land and parcels

What the maps cover in Thomas

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

Thomas by the Census

Population
7,930 2020 Census count
Housing units
3,573 2020 Census count
Land area
1,075 square miles
Water area
0.1 square miles
People per sq mi
7 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

Thomas 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 Thomas County

When was Thomas County founded?
Thomas County was founded in 1873, formed from Rooks County, and named after George Henry Thomas.
What is the county seat of Thomas County?
The county seat of Thomas County is Colby.
Is there an online parcel map for Thomas County?
Not that we have found yet. Lot lines and owners of record are kept by the county assessor's office. When a public parcel map appears, it shows here.
Has Thomas County's boundary or name changed?
Thomas County was created in 1873 from Rooks County. Since then the Atlas of Historical County Boundaries records 5 later changes, chiefly involving Sheridan County, Wallace County and Rooks County.
Is my lot in a flood zone?
We do not have flood maps for Thomas 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