| Zip Code | City | Population ↓ |
|---|---|---|
| 75035 | Frisco | 83,930 |
| 75002 | Allen | 72,679 |
| 75071 | Mckinney | 66,298 |
| 75098 | Wylie | 65,655 |
| 75070 | Mckinney | 57,516 |
| 75072 | Mckinney | 55,304 |
| 75025 | Plano | 54,201 |
| 75287 | Dallas | 52,240 |
| 75074 | Plano | 51,443 |
| 75023 | Plano | 49,376 |
| 75034 | Frisco | 48,749 |
| 75093 | Plano | 47,069 |
| 75013 | Allen | 46,649 |
| 75024 | Plano | 43,520 |
| 75078 | Prosper | 40,513 |
| 75069 | Mckinney | 39,048 |
| 75075 | Plano | 37,032 |
| 75082 | Richardson | 29,386 |
| 75009 | Celina | 28,109 |
| 75252 | Dallas | 27,541 |
| 75407 | Princeton | 26,607 |
| 75094 | Plano | 23,370 |
| 75409 | Anna | 22,249 |
| 75454 | Melissa | 17,241 |
| 75442 | Farmersville | 10,571 |
| 75173 | Nevada | 9,296 |
| 75166 | Lavon | 5,762 |
| 75424 | Blue Ridge | 3,483 |
| 75164 | Josephine | 430 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 29 ZCTAs in Collin County, Texas (US Census).