Texas · FIPS 48085 · County seat: McKinney
Collin County, TX GIS & Parcel Viewer
Looking for lot lines or a parcel number in Collin County, TX? The quickest route is Collin County Interactive Map, the county parcel map we keep on file for this county. We link straight to it and add a few tips for getting around.
Open the Collin County parcel map ↗
Opens maps.collincountytx.gov in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | Collin County Interactive Map |
|---|---|
| Type | County-run map |
| Website | maps.collincountytx.gov |
| Access | Free, no login (checked Oct 2026) |
| County seat | McKinney |
| Population | 1,195,359 (2023 Census Bureau estimate) |
| Land area | 841 sq mi |
| FIPS code | 48085 |
Where the parcel data comes from
It is a county-level map: Collin County or the company it hires keeps the parcel layer up to date. Our October 2026 check found the map open to the public, with no account or payment needed.
Searching for a parcel, step by step
- Open the official link in a new tab.
- Accept any disclaimer, then look for a search box that takes street addresses, owners or parcel IDs.
- Zoom in and click a parcel to see its details.
- Use the map's layer controls to add aerials or other layers if they're offered.
Have a tax bill handy? The parcel or account number on it is usually the fastest way to search.
The county in brief
Collin County had an estimated 1,195,359 residents in 2023, according to the Census Bureau. With about 841 square miles of land, that works out to roughly 1,421 people per square mile. Among Texas's 254 counties, it is the 6th largest by population. McKinney serves as the county seat.
Neighboring counties
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Collin County:
More on Collin County parcel maps
Maps vs. surveys
Online parcel lines are drawn for tax and planning use. They can be off by several feet, so use a recorded plat or a licensed surveyor for fences, setbacks or a sale.