When was Pecos County founded?

Pecos County was founded in 1871, formed from Presidio County, and named after Pecos River.

What is the county seat of Pecos County?

The county seat of Pecos County is Fort Stockton.

Is there an online parcel map for Pecos County?

Yes. Pecos County publishes a parcel map of 15,471 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Pecos County's boundary or name changed?

Pecos County was created in 1871 from Presidio County. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving El Paso County, Terrell County and Crockett County.

Is my lot in a flood zone?

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

County · code 48371

Pecos CountyTexas

Pecos County is in Texas and has its county seat in Fort Stockton. The county was created on May 8, 1871 and named after the Pecos River.

Founded1871
County seatFort Stockton
Named forPecos River
Land area4,764 sq mi + 1 sq mi water
Population15,193 2020 Census
Parcels mapped15,471 checked 15 October 2026

Open the free map Click any parcel in Pecos County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated 20 October 2026

Census outline · seat marked

History

Formed in 1871 from Presidio County

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

Pecos County was created from Presidio County on May 8, 1871, though it was not fully organized at that time. It was attached to El Paso County for judicial purposes in 1874, then became fully organized and detached in 1875. The county's boundaries changed multiple times: Reeves County was created from it in 1883, Val Verde and Terrell Counties were created from it in 1885 and 1905 respectively, though Terrell remained attached to Pecos for judicial purposes until it was fully organized in July 1905.

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

1871
Pecos County created Pecos created from Presidio and Non-County Area 26; Pecos not fully organized.
from Presidio
8 May 1871 · Texas Laws 1871, 12th leg., 1st sess., ch. 70/p. 73
1874
Changed Pecos attached to El Paso "for judicial purposes."
El Paso
28 April 1874 · Texas Laws 1874, 14th leg., reg. sess., ch. 109/p. 155
1875
Changed Pecos fully organized, detached from El Paso.
El Paso
9 March 1875 · "Pecos County," New Handbook of Texas, 5:121
1883
Lost territory Pecos lost to creation of Reeves.
to Reeves
14 April 1883 · Texas Laws 1883, 18th leg., reg. sess., ch. 103/p. 105
1885
Gained territory Pecos gained very small area from Crockett, lost to creation of Val Verde.
from Nw from Val Verdefrom Crockett
24 March 1885 · Texas Laws 1885, 19th leg., ch. 50/p. 48
1905
Lost territory Pecos lost to creation of Terrell; Terrell not fully organized, attached to Pecos "for judicial, surveying and recording purposes." Act passed 8 April 1905; took effect 14 July 1905.
to Terrell
14 July 1905 · Texas Laws 1905, 29th leg., reg. sess., ch. 70/p. 96
1905
Changed Terrell fully organized, detached from Pecos.
Terrell
27 July 1905 · "Terrell County," New Handbook of Texas, 6:263

Land and parcels

What the maps cover in Pecos

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

Parcels Good enough

Lot lines and tax-map numbers for 15,471 parcels from Pecos County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 15 October 2026
Address points Official

One point per address, 6,985 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

Pecos by the Census

Population

15,193 2020 Census count

Housing units

5,795 2020 Census count

Land area

4,764 square miles

Water area

1 square miles

People per sq mi

3 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

Pecos County's official site

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

County government

County government
The official website of Pecos County.
co.pecos.tx.us

See your own lot on these maps

Open Pecos 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 Pecos County

When was Pecos County founded?: Pecos County was founded in 1871, formed from Presidio County, and named after Pecos River.
What is the county seat of Pecos County?: The county seat of Pecos County is Fort Stockton.
Is there an online parcel map for Pecos County?: Yes. Pecos County publishes a parcel map of 15,471 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Pecos County's boundary or name changed?: Pecos County was created in 1871 from Presidio County. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving El Paso County, Terrell County and Crockett County.
Is my lot in a flood zone?: We do not have flood maps for Pecos County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby