Texas · FIPS 48111 · County seat: Dalhart
Dallam County, TX GIS & Parcel Viewer
Parcel lookups for Dallam County start at the Dallam County appraisal district map. This page gives you that official link, notes on how the viewer works, and links to the counties next door.
Open the Dallam County parcel map ↗
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Quick facts
| Official map | Dallam County appraisal district map |
|---|---|
| Type | Appraisal district map (county level) |
| Website | gis.bisclient.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Dalhart |
| Population | 7,237 (2023 Census Bureau estimate) |
| Land area | 1,503 sq mi |
| FIPS code | 48111 |
About the official source
Texas splits the job: an appraisal district, not the county itself, values each property. This viewer belongs to the district covering Dallam County. Our October 2026 check found the map open to the public, with no account or payment needed.
Finding a property on this map
- Open the link. In Texas, each county's appraisal district (CAD) values property for local taxing units, and this is the CAD's public map.
- Search by owner, address or property ID. The property ID is the account number the CAD uses on its records.
- Click a parcel on the map to bring up its account summary.
- Use the account details to look up values or the full appraisal record on the CAD's site.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
About Dallam County
Census Bureau figures put Dallam County at about 7,237 people (2023 estimate) on roughly 1,503 square miles of land, which is about 4.8 residents per square mile. That makes it number 182 out of 254 Texas counties by population. Its county seat is Dalhart.
Neighboring counties
Dallam County shares a border with the counties below. Each link has its own official map:
Before you rely on the lines
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.