Denison URL: https://knowledge.ivjn.us/en/places/tx-denison.html Denison is a city in Grayson County, Texas, United States; its 2020 population was 24,479. **Denison** is a city in [Grayson County](https://knowledge.ivjn.us/en/places/tx-grayson-county.html), Texas, United States. The 2020 census recorded a population of 24,479[^enwiki]. Updated: 2026-11-01 Relations: - Located in: Grayson County https://knowledge.ivjn.us/en/places/tx-grayson-county.html Sources: - Denison, Texas https://en.wikipedia.org/wiki/Denison,_Texas - GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip