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Dallam County, Texas facts for kids

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Not to be confused with Dallas County, Texas.
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Dallam County
The Dallam County Courthouse in downtown Dalhart was constructed in 1922.
The Dallam County Courthouse in downtown Dalhart was constructed in 1922.
Map of Texas highlighting Dallam County
Location within the U.S. state of Texas
Map of the United States highlighting Texas
Texas's location within the U.S.
Country  United States
State  Texas
Founded 1891
Seat Dalhart
Largest city Dalhart
 • Total 1,505 sq mi (3,900 km2)
 • Land 1,503 sq mi (3,890 km2)
 • Water 2.0 sq mi (5 km2)  0.1%%
 • Total 7,121
 • Density 4.5/sq mi (1.7/km2)
Time zone UTC−6 (Central)
 • Summer (DST) UTC−5 (CDT)

Dallam County is a county located in the northwestern corner of the U.S. state of Texas. As of the 2010 census, its population was 6,703. Its county seat is Dalhart. The county was founded in 1876 and later organized in 1891. It is named for James Wilmer Dallam, a lawyer and newspaper publisher.

Dallam is the northernmost of the ten Texas counties that from 1885–1912 constituted the legendary XIT Ranch. The ranch is still celebrated through the XIT Museum in Dalhart and the annual XIT Rodeo and Reunion held the first long weekend in August.


Dallam County was formed in 1876 from portions of Bexar County. It was named after James Wilmer Dallam, the lawyer who made the first digest of Texas laws. The first settlement in the area followed in 1870, which resulted in the Red River War of 1874 and 1875 with the native Comanche and Kiowa tribes. In 1900-01, the Chicago, Rock Island and Pacific Railroad company built a stretch from Enid, Oklahoma to Tucumcari, New Mexico, which ran through the county. The location where the tracks met those of the Fort Worth and Denver Railway was named Dalhart. The name is taken from the first letters of Dallam County and Hartley County, between which the town's area is divided. Within a short time, the small railroad stop turned into a sizable town and was named county seat in 1903.

Dallam County was one of the hardest hit areas in the Dust Bowl.

XIT Museum 27Oct2002
The XIT Museum in Dalhart.


According to the U.S. Census Bureau, the county has a total area of 1,505 square miles (3,900 km2), of which 1,503 square miles (3,890 km2) is land and 2.0 square miles (5.2 km2) (0.1%) is water.

Major Highways

  • US 54.svg U.S. Highway 54
  • US 87.svg U.S. Highway 87
  • US 287.svg U.S. Highway 287
  • US 385.svg U.S. Highway 385
  • Texas 102.svg State Highway 102

Adjacent counties

National protected area


Historical population
Census Pop.
1890 112
1900 146 30.4%
1910 4,001 2,640.4%
1920 4,528 13.2%
1930 7,830 72.9%
1940 6,494 −17.1%
1950 7,640 17.6%
1960 6,302 −17.5%
1970 6,012 −4.6%
1980 6,531 8.6%
1990 5,461 −16.4%
2000 6,222 13.9%
2010 6,703 7.7%
Est. 2015 7,121 6.2%
U.S. Decennial Census
1850–2010 2010–2014

As of the census of 2000, there were 6,222 people, 2,317 households, and 1,628 families residing in the county. The population density was 4 people per square mile (2/km²). There were 2,697 housing units at an average density of 2 per square mile (1/km²). The racial makeup of the county was 82.64% White, 1.64% Black or African American, 0.90% Native American, 0.21% Asian, 12.41% from other races, and 2.20% from two or more races. 28.38% of the population were Hispanic or Latino of any race.

There were 2,317 households out of which 39.00% had children under the age of 18 living with them, 55.10% were married couples living together, 9.70% had a female householder with no husband present, and 29.70% were non-families. 26.20% of all households were made up of individuals and 10.00% had someone living alone who was 65 years of age or older. The average household size was 2.68 and the average family size was 3.24.

In the county, the population was spread out with 31.80% under the age of 18, 8.60% from 18 to 24, 28.80% from 25 to 44, 20.60% from 45 to 64, and 10.30% who were 65 years of age or older. The median age was 31 years. For every 100 females there were 102.00 males. For every 100 females age 18 and over, there were 101.30 males.

The median income for a household in the county was $27,946, and the median income for a family was $33,558. Males had a median income of $27,244 versus $19,000 for females. The per capita income for the county was $13,653. About 11.30% of families and 14.10% of the population were below the poverty line, including 15.40% of those under age 18 and 24.80% of those age 65 or over.




Unincorporated community

Ghost Town

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