There are 48 cities in Collin County, Texas.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Population | 2020 Population | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Dallas | 1 | 1,302,753 | 1,303,212 | -0.01% | 3,835 | 339.7 | City |
| Plano | 2 | 291,450 | 286,408 | 0.43% | 4,065 | 71.7 | City |
| Garland | 3 | 242,523 | 246,311 | -0.39% | 4,265 | 56.9 | City |
| Frisco | 4 | 232,424 | 202,754 | 3.3% | 3,389 | 68.6 | City |
| McKinney | 5 | 218,846 | 197,497 | 2.5% | 3,268 | 67.0 | City |
| Lewisville | 6 | 135,930 | 126,422 | 1.78% | 3,343 | 40.7 | City |
| Carrollton | 7 | 132,706 | 133,552 | -0.16% | 3,621 | 36.7 | City |
| Richardson | 8 | 116,813 | 119,299 | -0.53% | 4,090 | 28.6 | City |
| Allen | 9 | 113,644 | 105,548 | 1.81% | 4,304 | 26.4 | City |
| Rowlett | 10 | 68,162 | 62,766 | 2.02% | 3,285 | 20.7 | City |
| Little Elm | 11 | 62,261 | 47,201 | 6.44% | 3,362 | 18.5 | City |
| Wylie | 12 | 62,144 | 57,879 | 1.75% | 2,813 | 22.1 | City |
| Rockwall | 13 | 54,642 | 47,745 | 3.26% | 1,847 | 29.6 | City |
| Celina | 14 | 51,820 | 17,808 | 19.63% | 1,086 | 47.7 | City |
| The Colony | 15 | 45,705 | 44,768 | 0.52% | 3,263 | 14.0 | City |
| Prosper | 16 | 45,274 | 30,816 | 8.67% | 1,797 | 25.2 | Town |
| Sachse | 17 | 34,030 | 27,086 | 5.38% | 3,496 | 9.7 | City |
| Princeton | 18 | 31,523 | 17,537 | 12.47% | 3,122 | 10.1 | City |
| Anna | 19 | 30,878 | 17,370 | 12.28% | 1,732 | 17.8 | City |
| Royse City | 20 | 27,611 | 13,719 | 14.39% | 1,438 | 19.2 | City |
| Fate | 21 | 26,697 | 18,412 | 8.41% | 2,253 | 11.8 | City |
| Melissa | 22 | 26,649 | 14,336 | 13.06% | 2,327 | 11.5 | City |
| Murphy | 23 | 20,866 | 21,082 | -0.26% | 3,663 | 5.7 | City |
| Addison | 24 | 17,103 | 17,089 | 0.02% | 3,929 | 4.4 | Town |
| Fairview | 25 | 10,911 | 10,426 | 1.12% | 1,230 | 8.9 | Town |
| Lucas | 26 | 8,965 | 7,673 | 3.74% | 575 | 15.6 | City |
| Josephine | 27 | 8,732 | 2,255 | 22.76% | 4,832 | 1.8 | City |
| Lavon | 28 | 8,481 | 4,535 | 13.15% | 2,514 | 3.4 | City |
| Van Alstyne | 29 | 7,552 | 4,470 | 11.35% | 1,357 | 5.6 | City |
| Parker | 30 | 6,414 | 5,526 | 3.58% | 754 | 8.5 | City |
| McLendon-Chisholm | 31 | 5,386 | 3,656 | 8.72% | 428 | 12.6 | City |
| Farmersville | 32 | 4,358 | 3,625 | 4.38% | 1,062 | 4.1 | City |
| Leonard | 33 | 2,113 | 1,992 | 1.44% | 923 | 2.3 | City |
| Whitewright | 34 | 1,792 | 1,728 | 0.9% | 978 | 1.8 | Town |
| Lowry Crossing | 35 | 1,676 | 1,690 | -0.24% | 646 | 2.6 | City |
| Seis Lagos | 36 | 1,451 | 899 | 7.64% | 1,914 | 0.8 | CDP |
| Nevada | 37 | 1,450 | 1,324 | 2.19% | 608 | 2.4 | City |
| Westminster | 38 | 1,393 | 768 | 2.8% | 350 | 4.0 | CDP |
| Blue Ridge | 39 | 1,206 | 1,181 | 0.5% | 1,026 | 1.2 | City |
| Weston | 40 | 992 | 287 | 21.57% | 221 | 4.5 | City |
| St. Paul | 41 | 984 | 991 | -0.2% | 686 | 1.4 | Town |
| Tom Bean | 42 | 952 | 922 | 0.74% | 657 | 1.4 | City |
| Trenton | 43 | 837 | 748 | 2.7% | 447 | 1.9 | City |
| New Hope | 44 | 678 | 666 | 0.44% | 473 | 1.4 | Town |
| Union Valley | 45 | 523 | 379 | 7.39% | 213 | 2.5 | City |
| Bailey | 46 | 237 | 223 | 1.28% | 595 | 0.4 | City |
| Hebron | 47 | 223 | 226 | -0.45% | 832 | 0.3 | Town |
| Mobile City | 48 | 167 | 142 | 3.73% | 11,133 | 0.0 | City |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Dallas is the largest city in Collin County.
Mobile City is the smallest city in Collin County.
There are 48 cities in Collin County, Texas.