Addison
- County:
- Dallas County
- County Seat:
- No
- Area (mi²):
- 4.353
- State:
- Texas
Addison is a town located in Dallas County, Texas. Addison has a 2026 population of 17,257. Addison is currently declining at a rate of -0.23% annually but its population has increased by 0.98% since the most recent census, which recorded a population of 17,090 in 2020.