Irion County GIS Maps
Irion County, Texas, has 1,513 residents across 2,950 parcels and covers 1,051.5 square miles. The population declined 5.4% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Irion County is 48235.
Mertzon is the county's largest population center. Irion County also includes 2 zip codes, 1 public school district and 6 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.
Irion County Trends
- Population
- 1,513▾
- Median Home Value
- $152,600▴
- K-12 Enrollment
- 334▾
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.
Irion 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.
Irion County Parcels
Irion County has 2,950 mapped parcels covering 734,013 acres. The median lot size is 154.66 acres. 1,936 parcels are 10 acres or larger. The records carry 1,038 distinct owner names. About 4% 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 95.7%. Browse the interactive Irion County Parcel viewer here.
Irion County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 2,954 | 100% |
| Owner name | 2,827 | 95.7% |
| Owner mailing address | 2,954 | 100% |
| Site address | 2,954 | 100% |
| Land use code | 2,827 | 95.7% |
| Land use description | 0 | 0% |
| Assessed value | 2,954 | 100% |
| Land value | 2,954 | 100% |
| Improvement value | 2,954 | 100% |
| Acreage | 2,954 | 100% |
| Parcel boundary | 2,950 | 99.9% |
| Download all Irion County parcels. | ||
Field coverage measured across all Irion County parcel records.
Irion County Population
Irion County had 1,513 residents in 2020. That was 5.4% lower than in 2010. Irion County had 258 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 1 people per square mile. Two of the county's most populated postal areas are Mertzon and Barnhart.
Population Trend in Irion County TX
Irion County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Irion County Zip Codes
Irion County has 2 zip codes. Two of the county's most populated zip codes are Mertzon (76941) and Barnhart (76930). Mertzon is the largest zip by population, with about 1,273 residents or 84% of the county total. Together, the three largest zips account for about 92% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Irion County TX
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 76941 | Mertzon | 1,273 | ▾ -5.6% |
| 76930 | Barnhart | 115 | ▾ -26.3% |
| Download all zip code data | |||
Irion County Zip Code populations and trends per most recent census data.
Irion County Demographics
Irion County has a median age of 50.5, which makes the county a little older than Texas overall. About 24% of residents are under 18, while 21.7% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 45 to 64 at about 29.3% of the population, which points to a solid working-age base. About 22.1% 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 Irion County TX
Median Age
50.5
Under 18
24%
Age 65+
21.7%
Bachelor's+
22.1%
Irion County School Districts
Irion County is served by 1 public school district with 334 students enrolled in 2024. Several larger districts account for a substantial share of students across the county map area. Those three districts account for about 100% of public school enrollment in the map area. Total enrollment has grown modestly since 2017 across the districts shown on the county map.
Largest School Districts by Enrollment in Irion County TX
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Irion County Independent School District | 334 | 100% | ▾ -0.9% |
| Download all school district data | |||
Irion County school district enrollment and trends per most recent NCES reporting data.
Irion County Housing & Real Estate
Irion County has a median home value of $152,600 and a median gross rent of $1,028. About 89% 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 $212,000 and homes spent about 87 days on the market.
Irion County Housing Mix
Irion County housing mix: owner, renter and vacant units.
Irion County Housing Trends
Irion County median home value and rent trend (last 5 years).
Businesses in Irion County, TX
Irion County has 74 business listings across 62 categories. The largest categories in Irion County business listings are Gas Stations (5, 6.8%), Farm (3, 4.1%), and Post Offices (2, 2.7%). The full Irion County business listings dataset includes names, categories, addresses and contact details where available. Irion County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Irion County, TX
| Category | Businesses | Share |
|---|---|---|
| Gas Stations | 5 | 6.8% |
| Farm | 3 | 4.1% |
| Post Offices | 2 | 2.7% |
| Cafe | 2 | 2.7% |
| Convenience Stores | 2 | 2.7% |
| Motels | 2 | 2.7% |
| Elementary School | 2 | 2.7% |
| Churches & Religious Organizations | 2 | 2.7% |
| Horse Riding | 1 | 1.4% |
| American Restaurants | 1 | 1.4% |
Irion County Business Listings
| Business | Category | City |
|---|---|---|
| Mase Cabins on Spring Creek | Accommodation | Mertzon |
| Rock B Gone, LLC | Agricultural Service | Mertzon |
| Rocker b Ranch | Agriculture | Barnhart |
| Misti’s Kitchen | American Restaurants | Mertzon |
| O.K. Wolfenbarger Field | Attractions And Activities | Mertzon |
| Bull's BBQ | Barbecue Restaurant | Mertzon |
| Hair by erin | Mertzon TX | Beauty Salons | Mertzon |
| Miller Construction | Building Contractor | Mertzon |
| JP Energy Partners | Business Manufacturing And Supply | Barnhart |
| Creekside Cabins | Cabin | Mertzon |
| Download Irion County business listings | ||
Irion County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Irion County Basemaps
Irion 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 Irion County Data Package
This page shows a preview of what's included in the Irion 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 Irion County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.