County Maps US

Castro County, Texas

A county in Texas, ranked 183 of 254 by population.

CountyFIPS 48069

Within Texas
Castro County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Dimmitt, the county seat, located via the 2025 Census Gazetteer.

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Population
7,295
-29 (-0.4%) since 2020
Land area
894.4
square miles. A further 0.5% of the total area is water
Population density
8.2
people per square mile, computed rather than published
County seat
Dimmitt
Seat of county government.
Established
1891
134 years ago
Largest city
Dimmitt city
Population 4,069.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Castro County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Castro County, Texas from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 799 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Castro County ranks

Position among the 254 counties of Texas, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn TexasNationally
Population7,295183rd of 2542,636th of 3,144
Land area894.4 sq mi156th of 254877th of 3,144
Population density8.2 per sq mi179th of 2542,633rd of 3,144
Median household income$56,776197th of 2542,350th of 3,143

Full data for Castro County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population7,295Vintage 2025 Population Estimates
Population in 20207,324Vintage 2025 Population Estimates
2020 estimates base?7,363Vintage 2025 Population Estimates
Land area894.4 sq mi2025 Gazetteer Files
Water area4.8 sq mi2025 Gazetteer Files
Total area899.3 sq mi2025 Gazetteer Files
Population density?8.2 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$56,776American Community Survey 2020-2024 5-Year Estimates
Median home value$95,000American Community Survey 2020-2024 5-Year Estimates
Median age34.5American Community Survey 2020-2024 5-Year Estimates
Households2,413American Community Survey 2020-2024 5-Year Estimates
Housing units3,024American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+14
90 births, 76 deaths
Net migration
-60
More people moved out than moved in.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 6 areas bordering Castro County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Swisher CountyTexas30 mi6,703
Parmer CountyTexas30 mi9,678
Lamb CountyTexas25 mi12,579
Deaf Smith CountyTexas20 mi18,626
Randall CountyTexas9.7 mi152,351
Hale CountyTexas5.3 mi31,819

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 254 counties of Texas

Open the interactive Texas county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.