Hereford is a city in Deaf Smith County, Texas, United States. The population was 14,597 at the 2000 census. It is the only incorporated Hereford in the country. It is the county seat of Deaf Smith County. It is also known as the "Beef Capital of the World" because of the large number of cattle fed in the area. The city is named for the Hereford breed. The local economy is affected significantly by growth in the dairy and ethanol industries.