Richardson, Texas
Richardson is a city in the northern part of the Dallas metropolitan area, straddling Dallas and Collin counties just north of Dallas proper and adjacent to Plano. It is widely known as a center of the region's technology and telecommunications industry, an area sometimes called the Telecom Corridor, and is home to the University of Texas at Dallas. The city sits on the gently rolling Blackland Prairie and is served by Dallas-area light rail.
Place essentials
Official Census snapshot- Census place type
- City
- July 2025 population
- 118,542
- Change from 2020 base
- -0.8%
- Land area
- 28.6 sq. mi.
- County footprint
- Collin County and Dallas 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
Richardson crosses county lines, so the appraisal district and tax office depend on the parcel address. School, city-limit, MUD, PID, and other special-district lines can be different too. Start with the full county list below instead of treating one county as the answer.
Official routes
Use the office for the parcel address; a mailing city is not always the governing city.
County context
What to know around Richardson
County lines carry much of the property, land, water, and outdoors context around Richardson.
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 History
Dallas County Was Created in 1846
Texas formed Dallas County on March 30, 1846, from parts of Nacogdoches and Robertson counties, and the city of Dallas became county seat after a close vote in 1850.
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