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Summary for Killingworth

About Killingworth (Click for our profile page)

Located in: Middlesex County (see below)

Time Zone: Killingworth lies in the Eastern Time Zone (EST/EDT)

Telephone Area Codes: 860 & 959<1>

Elevation: 390 feet [118.87 m] above sea level<2>

From the 2010 US Census (For more detail, see our Census Page for Killingworth)

Population

Year	Population
2019 Est:<3>	6,371 (2.36% decrease since 2010)
2010:	6,525 (8.42% increase since 2000)
2000:	6,018

Total Area:<4> 35.78 sq. miles [92.7 km²] - of which 1.26% is water (0.45 sq. miles [1.2 km²])

Housing Units:<5> 2,598

GPS Coordinates (Latitude/Longitude)<6>

For the purpose of mapping and calculating distances, we have chosen the following reference point for Killingworth:

Lat: 41.380700° (or 41°22'50" N)

Lon: -72.576500° (or -72°34'35" W)

USGS Topo Map: Haddam<7>

Federal GNIS/FIPS Codes for Killingworth

GNIS ID: 213448

FIPS State / Place Code: 09 / 40710

(For more about Federal Codes, see our Misc Page for Killingworth)

About Middlesex County

From the 2010 US Census (For more detail, see our Census Page for Middlesex)

Population

Year	Population
2019 Est:	162,436 (1.92% decrease since 2010)
2010	165,616 (6.8% increase since 2000)
2000:	155,071

Total Area: 439.1 sq. miles [1,137.2 km²] - of which 15.89% is water (69.8 sq. miles [180.7 km²])

Housing Units: 74,837

Federal GNIS/FIPS Codes for Middlesex

GNIS ID: 212797

FIPS State / County Code: 09 / 007

(For more about Federal Codes, see our Misc Page for Killingworth)

About Connecticut

From the US Census

Population

Year	Population
2019 Est:	3,566,022 (0.23% decrease since 2010)
2010:	3,574,097 (4.95% increase since 2000)
2000:	3,405,565

Websites for State of Connecticut

Official Website: https://portal.ct.gov/

Tourism: https://ctvisit.com/

Parks: https://portal.ct.gov/deep/state-parks/connecticut-state-parks-and-forests

Fishing: https://portal.ct.gov/deep/fishing/ct-fishing

Hunting: https://portal.ct.gov/deep/hunting/ct-hunting-and-trapping

Federal GNIS/FIPS Codes for State of Connecticut

GNIS ID: 1779780

FIPS State: 09

(For more about Federal Codes, see our Misc Page for Killingworth)

Footnotes ...

<1>	When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 860 code has been Overlayed with the 959 area code. New phone numbers in the Killingworth area will be assigned with one of these codes: 860 or 959. As a result, placing a call in the Killingworth area will require 10-digit dialing (where you enter both the area code and then the phone number).
<2>	The elevation is an estimate for the area around Killingworth - it will be higher in some places and lower in others.
<3>	Every year, the US Census Bureau creates a population estimate for the preceeding year. Keep in mind that this value is an estimate and not an actual count. The most recent Census estimate is for the year 2019.
<4>	The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Killingworth. The value given by the Census Bureau reflects their statistical (or sampling) requirements. For example, if there is a cluster of people living just outside of the community's official boundary, the Census-defined area might be expanded to include that group.
<5>	A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway).
<6>	Longitude & latitude values may not be the geographic center of Killingworth, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.
<7>	Name of the USGS 7.5 Minute topographic map which includes Killingworth.