Castro County GIS Maps
Castro County, Texas, has 7,371 residents across 6,240 parcels and covers 894.4 square miles. The population declined 8.6% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Castro County is 48069.
Dimmitt is the county's largest population center. Castro County also includes 4 zip codes, 7 public school districts and 13 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
Castro County Trends
- Population
- 7,371▾
- Median Home Value
- $94,900▾
- K-12 Enrollment
- 6,101▾
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Castro County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Castro County Parcels
Castro County has 6,240 mapped parcels covering 609,550 acres. The median assessed value is $88,100. The median lot size is 2.35 acres. 2,433 parcels are 10 acres or larger. The records carry 2,862 distinct owner names. About 5% of parcels list an owner mailing address outside Texas. Mailing addresses, site addresses, assessed values and lot sizes are on nearly every parcel. Owner names reach 96.8%. Browse the interactive Castro County Parcel viewer here.
Castro County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 6,240 | 100% |
| Owner name | 6,043 | 96.8% |
| Owner mailing address | 6,240 | 100% |
| Site address | 6,240 | 100% |
| Land use code | 6,043 | 96.8% |
| Land use description | 0 | 0% |
| Assessed value | 6,240 | 100% |
| Land value | 6,240 | 100% |
| Improvement value | 6,240 | 100% |
| Acreage | 6,240 | 100% |
| Parcel boundary | 6,240 | 100% |
| Download all Castro County parcels. | ||
Field coverage measured across all Castro County parcel records.
Castro County Population
Castro County had 7,371 residents in 2020. That was 8.6% lower than in 2010. Castro County had 914 fewer people in 2020 than it did in 2000, which points to a long-term population decline. The county is fairly spread out, with about 8 people per square mile. Some of the county's most populated postal areas include Dimmitt, Hart and Nazareth.
Population Trend in Castro County TX
Castro County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Castro County Zip Codes
Castro County has 4 zip codes. Some of the county's most populated zip codes include Dimmitt (79027), Hart (79043) and Nazareth (79063). Dimmitt is the largest zip by population, with about 4,899 residents or 66% of the county total. Together, the three largest zips account for about 93% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Castro County TX
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 79027 | Dimmitt | 4,899 | ▾ -6.2% |
| 79043 | Hart | 1,278 | ▾ -14.1% |
| 79063 | Nazareth | 667 | ▾ -2.8% |
| 79085 | Friona | 34 | ▾ -35.8% |
| Download all zip code data | |||
Castro County Zip Code populations and trends per most recent census data.
Castro County Demographics
Castro County has a median age of 34.9, which makes the county a little younger than Texas overall. About 28.9% of residents are under 18, while 16.8% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is Under 18 at about 28.9% of the population, which suggests the county has a notable share of children and family households. About 21% of adults have a bachelor's degree or higher, above the statewide figure of 33.1%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.
Key Demographics for Castro County TX
Median Age
34.9
Under 18
28.9%
Age 65+
16.8%
Bachelor's+
21%
Castro County School Districts
Castro County is served by 7 public school districts with 6,101 students enrolled in 2024. The largest districts on the county map are Hereford Independent, Dimmitt Independent and Happy Independent. Those three districts account for about 87% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Castro County TX
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Hereford Independent School District | 3,964 | 65% | ▴ 0.4% |
| Dimmitt Independent School District | 1,077 | 17.7% | ▾ -1% |
| Happy Independent School District | 253 | 4.1% | ▾ -6.3% |
| Nazareth Independent School District | 243 | 4% | ▾ -1.6% |
| Springlake-Earth Independent School District | 231 | 3.8% | ▾ -12.8% |
| Download all school district data | |||
Castro County school district enrollment and trends per most recent NCES reporting data.
Castro County Housing & Real Estate
Castro County has a median home value of $94,900 and a median gross rent of $910. About 69% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Texas median, while rents come in below the state average. In March 2026, the median listing price was $175,000 and homes spent about 50 days on the market.
Castro County Housing Mix
Castro County housing mix: owner, renter and vacant units.
Castro County Housing Trends
Castro County median home value and rent trend (last 5 years).
Businesses in Castro County, TX
Castro County has 231 business listings across 124 categories. The largest categories in Castro County business listings are Churches & Religious Organizations (11, 4.8%), Livestock Breeder (10, 4.3%), and Agricultural Service (7, 3.0%). The full Castro County business listings dataset includes names, categories, addresses and contact details where available. Castro County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Castro County, TX
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 11 | 4.8% |
| Livestock Breeder | 10 | 4.3% |
| Agricultural Service | 7 | 3.0% |
| Convenience Stores | 6 | 2.6% |
| Agriculture | 6 | 2.6% |
| Public And Government Association | 6 | 2.6% |
| Elementary School | 5 | 2.2% |
| Banks & Credit Unions | 5 | 2.2% |
| Gas Stations | 5 | 2.2% |
| Insurance Agencies | 4 | 1.7% |
Castro County Business Listings
| Business | Category | City |
|---|---|---|
| Walking G Guesthouse and Cow Palace | Accommodation | Dimmitt |
| Brown, Graham & Company, P.C. Certified Public Accountants | Accountant | Dimmitt |
| Dimmitt Recreation LLC | Active Life | Dimmitt |
| Western Equipment | Agricultural Service | Dimmitt |
| North Fork Feed Yard | Agriculture | Hart |
| Castro County Appraisal District | Appraisal Services | Dimmitt |
| Ogallala Quilters Society | Arts And Crafts | Dimmitt |
| Cambridge Ltc Partners | Assisted Living Facility | Dimmitt |
| Coin Cloud Bitcoin ATM | ATMs | Dimmitt |
| Don's Body Shop | Auto Body Shop | Dimmitt |
| Download Castro County business listings | ||
Castro County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Castro County Basemaps
Castro County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Castro County Data Package
This page shows a preview of what's included in the Castro County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for parcels, zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Castro County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.