Castro County
Castro County, Texas
Castro County is located in the western Panhandle on the Texas High Plains, bordered on the west by Parmer County, on the north by Deaf Smith and Randall Counties, on the east by Swisher County, and on the south by Lamb and Hale counties. The county was named for Henri Castro, the empresario who was consul general to Paris for the Republic of Texas. The center of the county lies at approximately 34°32' north latitude and 102°20' west longitude. Dimmitt, the county seat, is near the center of the county, approximately fifty miles southwest of Amarillo. Castro County comprises 900.33 square miles of level plains. Its sandy loam and black soils once supported native grasses but now produce abundant corn, wheat, sorghum, cotton, sugarbeets, and soybeans. Seasonally waterless draws or arroyos drain the county; Frio Draw runs southeasterly into Swisher County, and Running Water Draw, which begins about twenty-five miles northwest of Clovis, New Mexico, meanders southeasterly across Castro County into Lamb and then Hale counties. More than 500 playas dot the surface of the county. Elevation ranges from 3,500 to 4,000 feet above sea level, and annual precipitation averages 17.72 inches. The average minimum temperature of 22° F occurs in January, and the average maximum of 93° in July. The growing season averages 193 days a year.
Adapted from the official Handbook of Texas, a state encyclopedia developed by the Texas State Historical Association (TSHA). It is an authoritative source of trusted historical records.
Donald R. Abbe | © Texas State Historical Association
Castro County at a Glance
Adopt a Town
The Texas Almanac's Land Rush program lets you adopt the town, county, or lake of your choice and share your message with the world. 100% of the proceeds benefit education in Texas.

- Adoption Status: ✅
- This place is available for adoption!
- Adopted by:
- Your name goes here
- Dedication Message:
- Your message goes here
County Map of Texas
Castro County
- Castro County
Currently Exists
Yes
Place type
Castro County is classified as a County
Altitude Range
3565 ft – 4000 ft
Places of Castro County
Noteworthy | Place | Type |
---|---|---|
Arney | Town | |
Big Square | Town | |
Boom | Town | |
Cleo | Town | |
Dimmitt | Town | |
Dodd | Town | |
Easter | Town | |
Flagg | Town | |
Frio | Town | |
Grisham | Town | |
Hart | Town | |
Hilburn | Town | |
Jumbo | Town | |
Mulkey | Town | |
Nazareth | Town | |
Nina | Town | |
Parrott | Town | |
Peak | Town | |
Platteville | Town | |
Red Barn | Town | |
Renfro | Town | |
Roy | Town | |
Shamrock | Town | |
Summerfield | Town | |
Sunnyside | Town | |
Tam Anne | Town |
Photos of Castro County and surrounding areas
Castro County, Texas
Rhoads Memorial Library serves the Castro County, Texas. Photograph by Billy Hathorn.

Castro County, Texas
Map of Castro County, Texas. Map Credit: Robert Plocheck.
Dimmitt, Texas.
The Castro County Courthouse is located in the City of Dimmitt, Texas. Photograph by Billy Hathorn. Dimmitt

Proud to call Texas home?
Put your name on the town, county, or lake of your choice.
Search Places »
Castro County by the Numbers
Population & Civilian Labor Counts
This is some placeholder text that we should either remove or replace with a brief summary about this particular metric. For example, "We update population counts once per year..."
Population Counts
Castro County
Pop. | Year | Source |
---|---|---|
7,530 | 2019 | United States Census Bureau |
Civilian Labor Counts
Castro County
People | Year | Source |
---|---|---|
3,172 | 2019 | Texas Workforce Commission |
Per Capita Income
This is some placeholder text that we should either remove or replace with a brief summary about this particular metric. For example, "We update population counts once per year..."
Per Capita Income (USD) | Year | Source |
---|---|---|
$42,786 | 2019 | U.S. Bureau of Economic Analysis |
Property Values, Retail Sales, and Wages
This is some placeholder text that we should either remove or replace with a brief summary about this particular metric. For example, "We update population counts once per year..."
Property Values
Castro County
USD ($) | Year | Source |
---|---|---|
1,769,071,410 | 2019 | State Property Tax Board |
Retail Sales
Castro County
USD ($) | Year | Source |
---|---|---|
65,681,283 | 2019 | State Comptroller of Public Accounts |
Wages
Castro County
USD ($) | Year | Source |
---|---|---|
26,674,513 | 2019 | Texas Workforce Commission |
Unemployment
This is some placeholder text that we should either remove or replace with a brief summary about this particular metric. For example, "We update population counts once per year..."
Unemployment Percentage | Year | Source |
---|---|---|
4.1 | 2019 | Texas Workforce Commission |
Rainfall
This is some placeholder text that we should either remove or replace with a brief summary about this particular metric. For example, "We update population counts once per year..."
Rainfall (inches) | Year | Source |
---|---|---|
21.2 | 2019 | National Oceanic and Atmospheric Administration |
Temperature Ranges
This is some placeholder text that we should either remove or replace with a brief summary about this particular metric. For example, "We update population counts once per year..."
Min. (January Average, °F) | Max. (July Average, °F) | Year | Source |
---|---|---|---|
21.3 | 91.0 | 2019 | National Oceanic and Atmospheric Administration |
Land Area & Total Area
This is some placeholder text that we should either remove or replace with a brief summary about this particular metric. For example, "We update population counts once per year..."
Land Area
Castro County
Area (square miles) | Year | Source |
---|---|---|
894.4 | 2019 | United States Census Bureau |
Total Area
Castro County
Area (square miles) | Year | Source |
---|---|---|
899.3 | 2019 | United States Census Bureau |