New London County is located in the southeastern corner of Connecticut. The county has a total area of 722 square miles. Approximately 86% is land and 14% water. The terrain of the county is mostly level, becoming more elevated only in its northern extreme. As of the census of 2000, there were 259,088 people, 99,835 households, and 67,188 families residing in New London County. The population density was 389 per square mile. The median income for a family was $59,857.