Housing Inventory: Median Home Size in Square Feet in Collin County, TX was 2510.00000 Level in April of 2026, according to the United States Federal Reserve. Historically, Housing Inventory: Median Home Size in Square Feet in Collin County, TX reached a record high of 3266.00000 in February of 2017 and a record low of 2404.00000 in January of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for Housing Inventory: Median Home Size in Square Feet in Collin County, TX - last updated from the United States Federal Reserve on May of 2026.