Mertzon, Texas
Mertzon is a small city in West Texas, seat of Irion County, lying about 27 miles southwest of San Angelo along Spring Creek in the semi-arid ranchland of the Edwards Plateau's western edge. The surrounding country is open range given over largely to sheep, goat, and cattle ranching, with oil and gas activity across the county. The town developed as a shipping point on the rail line running southwest from San Angelo.
Place essentials
Official Census snapshot- Census place type
- City
- July 2025 population
- 726
- Change from 2020 base
- -2.9%
- Land area
- 1.5 sq. mi.
- County footprint
- Irion County
Place type, county footprint, and land area use the Census Bureau's January 1, 2025 geography. Population uses Vintage 2025 estimates through July 1, 2025; change compares that estimate with the April 1, 2020 estimates base. Geography file | Population file
Property here runs through the appraisal district and tax office for Irion County. The homestead exemption, appraisal cap, protests, and any MUD, PID, or special districts all sit at the parcel level.
Official routes
Use the office for the parcel address; a mailing city is not always the governing city.
County context
What to know around Mertzon
County lines carry much of the property, land, water, and outdoors context around Mertzon.
Local History
The Railroad Moved the County Seat to Mertzon
Irion County started with Sherwood as its county seat, but when the railroad bypassed Sherwood and ran through Mertzon, the county seat followed.
Property Tax
One Office Handles Appraisals, Another Collects Taxes
Irion County has a separate appraisal district and a separate tax office — they do different jobs, so you may need to contact both.
Water Wells
A Local District Manages Groundwater in Irion County
If you plan to drill a water well in Irion County, you must deal with the Irion County Water Conservation District before you start.
Nearby
Places near Mertzon
Nearby counties
Local notes for nearby counties
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