Collin County, Texas

Collin County: County in Texas, United States

About

Collin County is a county located in the U.S. state of Texas. As of the 2010 census, the population was 782,341 and a population density of 341 people per km². After 10 years in 2020 county had an estimated population of 1,072,069 inhabitants. Its county seat is McKinney. The county was created 179 years ago in 1846.

Collin County is located in the U.S. state of Texas, part of the Dallas-Fort Worth metroplex. The county was named after Collin McKinney, one of the five men who drafted the Texas Declaration of Independence.

Collin County was established in 1846 and separated from the Fannin County. It originally included land that is now part of Hunt County and Grayson County. The county seat is McKinney.

Key Facts About Collin County Today

Population: As of 2021, the population of Collin County was 1,034,730, making it one of the fastest growing counties in the nation.

Major Cities: Some of the major cities and towns in Collin County include McKinney, Plano, Allen, Frisco, and Wylie. Many of these cities have experienced rapid growth in recent decades.

Economy: Collin County has a strong and diverse economy. Many major companies are headquartered here, including Toyota, Liberty Mutual, HP Enterprise, and Dr. Pepper Snapple Group. The county is also home to many technology companies.

Things to See and Do in Collin County

Some of the top attractions and activities in Collin County include:

  • The Heard Natural Science Museum & Wildlife Sanctuary - Discover nature and see live animals at this museum in McKinney.
  • Southfork Ranch - Tour the famous ranch that was featured in the TV show Dallas.
  • Frisco Railroad Museum - Ride miniature trains and learn about railroad history.
  • Legacy West - Shop, dine, and enjoy entertainment at this huge mixed-use development in Plano.
  • Collin Creek Mall - Experience premier shopping, dining, and entertainment.

Whether you're a history buff, nature lover, foodie, or shopper, Collin County offers something for visitors of all interests. With its rapid growth and business-friendly environment, it's a county to watch in the great state of Texas!

Collin County locator map
Location of Collin County on Texas map.

Quick Facts about Collin County

Population : 1,072,069 (2020)
Country : United States of America
State : Texas (United States)
Area : 2294 km2
Water as percent of area : 5.1%
Land as percent of area : 94.9%
Named for : Collin McKinney
Altitude : 604 feet / 184 meters
Capital : McKinney
Establishment : April 04, 1846
Time Zone : Central Time Zone
Local time : 08:33:19 (24th May 2025)
Density : 467 Pop. per km² as of 2020
Population growth : 27.03% (2010-2020)
Collin county tx courthouse image
Collin county tx courthouse
Collin county tx courthouse image
Collin county tx courthouse image

Geography

Collin County is located at 33°11'16"N 96°34'21"W (33.1879100, -96.5723700). It has 5 neighbors: Dallas County, Denton County, Grayson County, Hunt County and Rockwall County.

Collin County map

Click "full screen" full screen map icon to open full mode. View satellite images

The largest city of Collin County is Plano with a population of 291,296. Other cities include, McKinney population 208,272, Allen population 109,379, Wylie population 54,467 and Murphy population 20,844. See all Collin County cities & populated places.

Collin County Populated Places (more)

Cities, towns, neighborhoods & other populated places in Collin County.

City Name Population Title
Plano 291,296 The second most populous city in Texas and the center of the Dallas-Fort Worth metropolitan area.
Frisco 209,980 Frisco is a city in the US state of Texas located in the counties of Collin and Denton, and an affluent and rapidly developing suburb of Dallas.
McKinney 208,272 The third most populous city in Collin County, Texas.
Allen 109,379 The fifth most populous city in Collin County, Texas.
Wylie 54,467 A city in Collin County, Texas.
Prosper 26,957 Suburban town located in Collin and Denton counties, Texas
Murphy 20,844 City in Collin County, Texas, United States
Celina 20,114 City in Texas, United States of America
Anna 16,945 City in Collin County, Texas, United States
Princeton 15,699 City in Collin County, Texas, United States
Melissa 13,793 City in Collin County, Texas, United States
Lucas 8,819 City in Collin County, Texas, United States
Parker 4,352 City in Collin County, Texas, United States
Lavon 3,993 City in Collin County, Texas, United States of America
Farmersville 3,711 City in Collin County, Texas, United States
Josephine 2,545 City in Collin County, Texas

Collin County has 5 neighbours.

  • Weston
  • Princeton
  • Parker
  • Nevada
  • Murphy
  • Melissa
  • Lucas
  • Lowry Crossing
  • Lavon
  • Farmersville
  • Blue Ridge
  • Anna
  • Allen
  • McKinney

Demographics

The population of Collin County increased by 27.03% in 10 years.

Year Population % Change Method
2010 782,341 - census
2011 812,540 3.72% estimation process
2012 835,230 2.72% estimation process
2013 856,398 2.47% estimation process
2014 884,688 3.2% estimation process
2015 915,243 3.34% estimation process
2016 943,742 3.02% estimation process
2017 971,864 2.89% estimation process
2018 1,004,307 3.23% estimation process
2019 1,034,730 2.94% estimation process
2020 1,072,069 3.48% estimation process
Map of countries with a smaller population than Collin County

Collin, Collin Comitatus, Collin Coonty, Collin Kun, Collin Kūn, Collin konderria, Collin megye, Collini maakond, Comitatul Collin, Comte de Collin, Comté de Collin, Condado de Collin, Condado han Collin, Contea di Collin, County Collin, Hrabstwo Collin, Kolin, Kollin, Okrug Kolin, Quan Collin, Quận Collin, ke lin xian, kolina ka'unti, korin jun, mqatʿt kwlyn, shhrstan kalyn tgzas, Колин, Коллин, Коллін, Округ Колин, Քոլին շրջան, شهرستان کالین، تگزاس, مقاطعة كولين, کولن کاؤنٹی, کولن کاؤنٹی، ٹیکساس, কোলিন কাউন্টি, കോളിൻ കൗണ്ടി, コリン郡, 科林縣

People born in Collin County (6)

People born in Collin County, including actress Haley Ramm, politician Ray Roberts, gunslinger King Fisher, .

List

Texas Other Counties (more counties)

County Name Population Title
Harris County 4,738,253 County in Texas, United States
Dallas County 2,635,888 County in Texas, United States
Houston 2,316,120 The fourth most populous city in the United States and the center of the Houston metropolitan area.
Tarrant County 2,123,347 County in Texas, United States
Bexar County 2,026,823 County in Texas, United States
San Antonio 1,567,118 The seventh most populous city in the United States and the center of the San Antonio metropolitan area.
Dallas 1,343,266 The ninth most populous city in the United States and the center of the Dallas-Fort Worth metropolitan area.
Travis County 1,300,503 County in Texas, United States
Austin 995,484 The eleventh most populous city in the United States and the center of the Austin metropolitan area.
Fort Worth 927,720 The twelfth most populous city in the United States and the center of the Dallas-Fort Worth metropolitan area.
Denton County 919,324 County in Texas, United States
Montopolis 912,791 A neighborhood located in Austin, Texas.
Hidalgo County 875,200 County in New Mexico, United States
El Paso County 841,286 County in Texas, United States
Fort Bend County 839,706 County in Texas, United States
El Paso 681,534 The twenty-third most populous city in the United States and the center of the El Paso metropolitan area.