When was Hartley County founded?

Hartley County was founded in 1876, formed from Jack County, and named after Oliver C. Hartley.

What is the county seat of Hartley County?

The county seat of Hartley County is Channing.

Is there an online parcel map for Hartley County?

Yes. Hartley County publishes a parcel map of 5,667 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Hartley County's boundary or name changed?

Hartley County was created in 1876 from Jack County. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving Oldham County, Dallam County and Wheeler County.

Is my lot in a flood zone?

We do not have flood maps for Hartley County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Hartley County, Texas: parcels, history and offices

Where it is

Hartley on the map of Texas

Texas has 254 counties and county equivalents, each with its own records office. Shapes with a page are links.

Counties of Texas · Hartley highlighted

History

Formed in 1876 from Jack County

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

Hartley County was created on November 19, 1876, but remained unorganized and was attached to Jack County for judicial and administrative purposes until being transferred to Wheeler County in 1879. The county was successively attached to Oldham County in 1881, then became fully organized in January 1891 when it detached from Oldham, subsequently serving as judicial seat for Dallam County until Dallam fully organized and separated in July 1891. In 1931, Hartley County's western boundary was formally extended to the Texas-New Mexico border at the 103rd meridian.

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

1876
Hartley County created Hartley created from Bexar Territory; Hartley not fully organized, attached to Jack "for judicial, surveying and all other purposes." Act passed 21 August 1876; took effect 19 November 1876.
from Jack
19 November 1876 · Texas Laws 1876, 15th leg., ch. 144/pp. 235, 242
1879
Changed Hartley detached from Jack, attached to Wheeler "for judicial purposes."
Jack Wheeler
7 October 1879 · Texas Laws 1879, 16th leg., spec. sess., ch. 30, sec. 3/p. 29
1881
Changed Hartley detached from Wheeler, attached to Oldham "for judicial purposes."
Wheeler Oldham
15 February 1881 · Texas Laws 1881, 17th leg., reg. sess., ch. 13, sec. 5/p. 8
c. 1891
Changed Hartley fully organized, detached from Oldham.
Oldham
31 January 1891 · Hunter, 31
1891
Changed Dallam detached from Oldham, attached to Hartley "for judicial purposes."
Dallam Oldham
1 April 1891 · Texas Laws 1891, 22d leg., reg. sess., ch. 46, sec. 2/p. 49
1891
Changed Dallam fully organized, detached from Hartley.
Dallam
28 July 1891 · Hunter, 35
1931
Hartley County created Western extent of Hartley explicitly extended to the Texas-New Mexico boundary (103d meridian) as established by John H. Clark in 1859. 27 May 1931 · Texas Laws 1931, 42d leg., reg. sess., ch. 358/p. 850

Land and parcels

What the maps cover in Hartley

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

Parcels Good enough

Lot lines and tax-map numbers for 5,667 parcels from Hartley County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 15 October 2026 · checked 16 October 2026
Address points Official

One point per address, 2,968 in all from Texas Geographic Information Office (TxGIO, formerly TNRIS), a division of the Texas Water Development Board; StratMap program.
checked 14 October 2026
Buildings Reference

Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026

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

Hartley by the Census

Population

5,382 2020 Census count

Housing units

1,930 2020 Census count

Land area

1,462 square miles

Water area

1.2 square miles

People per sq mi

4 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

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Records

Assessor and property recordsfrom co.hartley.tx.us · checked 13 October 2026

County government

County government
The official website of Hartley County.
co.hartley.tx.us

See your own lot on these maps

Open Hartley County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

Open the free map no sign-in Pro early access

Questions

Common questions about Hartley County

When was Hartley County founded?: Hartley County was founded in 1876, formed from Jack County, and named after Oliver C. Hartley.
What is the county seat of Hartley County?: The county seat of Hartley County is Channing.
Is there an online parcel map for Hartley County?: Yes. Hartley County publishes a parcel map of 5,667 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Hartley County's boundary or name changed?: Hartley County was created in 1876 from Jack County. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving Oldham County, Dallam County and Wheeler County.
Is my lot in a flood zone?: We do not have flood maps for Hartley County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Hartley CountyTexas