According to the Web site city-data.com, Lewisboro’s population in July 2009 was 12,550 with slightly more females, 6,411, than males, 6,139.

The median age was 38.8 years, compared to the New York median age of 35.9 years. Breakdown by race: 93.2% white alone, 2.5% Hispanic, 2.1% Asian alone, 1.2% black alone.

The population had been 12,324 as of the 2000 U.S. Census.