County · Texas

Castro County, Texas

Castro County, Texas. Castro County had 7,295 residents in 2025 by the Census Bureau's estimate, down 0.9% since 2020, while Texas grew 8.8%. It holds 4 places (3 cities, villages and boroughs and 1 census-designated) and 3 census tracts. GEOID 48069.

Residents, July 2025 estimate

7,295

Census Bureau estimate (no margin published)
2020 Census count: 7,371 · ACS 2020-2024: 7,344

Median household income

$56,776

±$10,779 (90% margin)
Texas: $78,476

Median home value

$95,000

±$31,479 (90% margin)
Texas: $283,800

Median gross rent

$896

±$180 (90% margin)
Texas: $1,403

How many people live in Castro County, and is it growing?

The 2020 Census counted 7,371 residents in Castro County. The Census Bureau estimates 7,295 for July 1, 2025, down 0.9% since 2020, while Texas grew 8.8%. The 2020-2024 American Community Survey puts the population at 7,344 over 894 square miles of land.

  • July 2020→2021 +31 (7,355)
  • 2021→2022 −70 (7,285)
  • 2022→2023 +6 (7,291)
  • 2023→2024 +52 (7,343)
  • 2024→2025 −48 (7,295)
Castro County in Texas. Boundaries: Census Bureau 2024.
Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
MeasureCastro CountyTexasChange since 2015-2019
Total population7,34430,188,424−329
Households2,413±13610,992,816no clear change
Average household size3.00±0.172.69no clear change
Housing units3,024±1112,128,515−170

Castro County's population since 2000

From 8,285 in 2000 to 7,295 in 2025: down 11.9%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

  • 2000 Census 8,285
  • 2005 (estimate) 7,908
  • 2010 Census 8,062
  • 2015 (estimate) 7,774
  • 2020 Census 7,371
  • 2025 (estimate) 7,295

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Castro County?

Castro County holds 4 places: 3 cities, villages and boroughs (incorporated places) and 1 census-designated place. The largest is Dimmitt with 4,069 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Castro County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.
Dimmittcity4,1714,107±21$45,875$85,10018.1%100%
Hartcity869919±296$46,354$52,20015.9%100%
NazarethGEOID 4850496city310273±122$110,625$245,5000.0%100%
SummerfieldGEOID 4870940CDP340±15not publishednot published–100%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Castro County?

The median resident of Castro County is 34.5 years old; 29.1% are under 18 and 18.7% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 65.6%, then non-Hispanic white residents at 29.7%. 17.4% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
MeasureCastro CountyTexasChange since 2015-2019
Median age34.5±1.235.6no clear change
Under 18 years29.1%±0.1 pts25.0%–
65 years and over18.7%±1.1 pts13.4%–
Hispanic or Latino (any race)65.6%39.7%+1.0 pts
White alone, not Hispanic29.7%±0.6 pts39.1%−2.3 pts
Black or African American alone, not Hispanic1.2%±1.6 pts11.9%–
Asian alone, not Hispanic0.9%±1.1 pts5.5%–
American Indian and Alaska Native alone, not Hispanic0.8%±1.0 pts0.1%–
Native Hawaiian and Other Pacific Islander alone, not Hispanic0.0%±0.7 pts0.1%–
Two or more races, not Hispanic1.8%±0.8 pts3.1%–
Some other race alone, not Hispanic0.0%±0.1 pts0.4%–
Born outside the United States17.4%±3.0 pts17.6%no clear change
Speak a language other than English at home (age 5+)52.7%±4.6 pts35.1%–
Civilian veterans (age 18+)7.2%±2.1 pts6.2%–
With a disability9.3%±2.8 pts12.3%–
No health insurance coverage22.2%±3.2 pts17.1%no clear change
High school graduate or higher (age 25+)74.2%±5.1 pts86.0%–
Bachelor's degree or higher (age 25+)18.6%±4.4 pts33.8%no clear change
Graduate or professional degree (age 25+)3.8%±1.7 pts12.3%–
Moved from another state in the past year1.0%±0.7 pts2.0%–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Castro County earn?

Half of Castro County's 2,413 households earn less than $56,776 a year (±$10,779), against $78,476 in Texas. In 2015-2019 it was $61,709 in 2024 dollars; the margins of error cannot tell the two periods apart. 19.2% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
MeasureCastro CountyTexasChange since 2015-2019
Median household income$56,776±$10,779$78,476no clear change
Mean household income$76,146±$7,134$109,933–
Per capita income$26,462±$2,300$40,752no clear change
People below the poverty line19.2%±4.2 pts13.8%no clear change
Children under 18 below the poverty line22.2%±7.2 pts18.7%no clear change
Households receiving SNAP9.4%±4.2 pts11.4%–
Households with a broadband subscription84.9%±5.5 pts91.4%–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Castro County?

Owners occupy 63.6% of Castro County's occupied homes and renters 36.4%. The median owner-occupied home is valued at $95,000 by its owner (±$31,479). The median renter pays $896 a month including utilities, and 23.9% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
MeasureCastro CountyTexasChange since 2015-2019
Median home value (owner-occupied)$95,000±$31,479$283,800no clear change
Median gross rent$896±$180$1,403no clear change
Renters paying 35% or more of income on rent23.9%±12.7 pts42.3%no clear change
Median monthly owner costs, with a mortgage$1,352±$243$2,106–
Owner-occupied homes63.6%±6.6 pts62.6%no clear change
Housing units3,024±1112,128,515−170
Homeowner vacancy rate0.0%±3.2 pts1.1%–
Rental vacancy rate8.7%±7.3 pts7.7%–
Single-family detached homes74.7%±6.1 pts64.4%–
Mobile homes15.0%±3.8 pts6.4%–
Built 2020 or later0.7%±0.5 pts4.0%–
Built 1939 or earlier7.5%±2.9 pts3.1%–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Castro County building?

Builders took permits for 0 new housing units across Castro County in 2025 (0 single-family), 0.0 per 1,000 residents.

  • 2019 0 units
  • 2020 1 units
  • 2021 0 units
  • 2022 0 units
  • 2023 0 units
  • 2024 0 units
  • 2025 0 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Castro County get to work?

68.1% of Castro County's workers drive alone. The average trip to work takes 15.2 minutes. The unemployment rate in 2020-2024 averaged 3.7%.

Work and commuting, ACS 2020-2024 5-year estimates
MeasureCastro CountyTexasChange since 2015-2019
In the labor force (age 16+)65.1%±4.3 pts65.3%–
Unemployment rate3.7%±1.8 pts5.3%no clear change
Drove alone to work68.1%±7.2 pts71.4%–
Carpooled27.2%±7.2 pts10.0%–
Public transportation0.7%±0.9 pts0.9%–
Walked0.7%±0.7 pts1.5%–
Worked from home3.2%±2.2 pts14.4%–
Mean travel time to work15.2 min±1.926.7 minno clear change

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Castro County's census tracts?

Castro County is divided into 3 census tracts. Among those with a reliable estimate, median household income runs from $46,000 (Tract 9502) to $61,964 (Tract 9501).

Census tracts of Castro County, ACS 2020-2024 5-year estimates; sort by any column
Tract 950148069950100Nazareth (4%)1,088913±251$61,964$113,200$98321.2%
Tract 950248069950200Dimmitt (81%)4,4074,392±151$46,000$93,500$87919.1%
Tract 950348069950300Hart (10%)1,8762,039±264$57,686not published$1,00218.5%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Castro County compare with Texas's other counties?

Castro County's rank among Texas's counties with a reliable estimate (1 = highest)
MeasureRank
Population182nd of 253
Growth 2020-2025184th of 254
Residents per square mile178th of 254
Median household income197th of 253
Median home value221st of 247
Median gross rent154th of 245
Poverty rate43rd of 240
Bachelor's degree or higher151st of 252
Median age208th of 254

Every county in Texas

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Castro County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.