Allen, Texas
Allen is a suburban city in Collin County, part of the northern Dallas-Fort Worth metropolitan area and situated just south of McKinney and north of Plano. Once a farming and railroad community on the blackland prairie, it has grown into a densely developed residential and commercial city as the metroplex expanded northward. Allen is known regionally for its large high school football stadium and for the Watters Creek and outlet shopping developments that draw visitors from across the area.
Place essentials
Official Census snapshot- Census place type
- City
- July 2025 population
- 113,447
- Change from 2020 base
- +8.4%
- Land area
- 26.4 sq. mi.
- County footprint
- Collin 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 Collin 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 Allen
County lines carry much of the property, land, water, and outdoors context around Allen.
County Origins
Collin County Was Named for a Signer of the Texas Declaration of Independence
Collin County was created in 1846 and named for Collin McKinney, who signed the Texas Declaration of Independence.
Property Tax Relief
How the Homestead Exemption Lowers Your Property Tax Bill
If you own and live in your home in Collin County, you can apply for a homestead exemption that removes part of your home's value from the tax calculation.
County Seat
McKinney Grew from a Donated Townsite into the County Seat
McKinney became the county seat of Collin County in 1848 after a landowner donated 120 acres for the original townsite.
Nearby
Places near Allen
Nearby counties
Local notes for nearby counties
Next steps for Allen
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