Facts about New Haven County, Connecticut
New Haven County is a county in the south central part of the U.S. state of Connecticut. As of the 2010 census, the population was 862,477 making it the third-most populous county in Connecticut. Two of the state's largest cities, New Haven (2nd) and Waterbury (5th), are part of New Haven County.
GeographyAccording to the U.S. Census Bureau, the county has a total area of 862 square miles (2,230 km²), of which 605 square miles (1,570 km²) is land and 258 square miles (670 km²) (29.9%) is water.
DemographicsAs of the 2010 United States Census, there were 862,477 people, 334,502 households, and 215,749 families residing in the county. The population density was 1,426.7 inhabitants per square mile (550.9/km²). There were 362,004 housing units at an average density of 598.8 per square mile (231.2/km²).
Serving New Haven County, Connecticut

Bio-One services all types of trauma, distressed property, and biohazard scenes in communities throughout New Haven County Area. We partner with local authorities, communities, emergency services personnel, victim services groups, hoarding task forces, apartment complexes, insurance companies and others to provide the most efficient and superior service possible.
We are your crime scene cleaners dedicated to assisting law enforcement, public service agencies and property owners/managers in restoring property that has been contaminated as a result of crime, disaster or misuse.
- We have fielded thousands of calls and recovered just about any situation out there in a professional and compassionate matter.
- We are Licensed, Bonded, and Insured.
- We maintain strict adherence to OSHA rules and regulations to ensure the safety of our workers, the public, and of you and your family.
- We are proud to have a great working relationship with the Police, Fire, and most Insurance Agencies.