According to the CERC town profile, New Canaanites fall into the following age ranges: 0-4: 1,338 (6%); 5-17: 4,125 (21%); 18-24: 1,031 (6%); 25-49: 5,828 (30%); 50-64: 4,360 (22%); 65+: 2,721 (14%).

The median age was 43 in New Canaan, and 40 in the county and state.