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Summary for Chatham

About Chatham (Click for our profile page)

Located in: Barnstable County (see below)

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

Telephone Area Codes: 508 & 774<1>

ZIP Code: 02633<2>

Elevation: Near sea level<3>

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

Population

Year	Population
2019 Est:<4>	5,983 (2.32% decrease since 2010)
2010:	6,125 (7.55% decrease since 2000)
2000:	6,625

Total Area:<5> 24.39 sq. miles [63.2 km²] - of which 33.87% is water (8.26 sq. miles [21.4 km²])

Housing Units:<6> 7,343

GPS Coordinates (Latitude/Longitude)<7>

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

Lat: 41.682600° (or 41°40'57" N)

Lon: -69.961600° (or -69°57'41" W)

USGS Topo Map: Chatham<8>

Federal GNIS/FIPS Codes for Chatham

GNIS ID: 618250

FIPS State / Place Code: 25 / 12960

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

About Barnstable County

The community of Barnstable is the County Seat for Barnstable County.

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

Population

Year	Population
2019 Est:	212,990 (1.35% decrease since 2010)
2010	215,899 (2.85% decrease since 2000)
2000:	222,230

Total Area: 1,305 sq. miles [3,381.3 km²] - of which 69.8% is water (911 sq. miles [2,361.6 km²])

Housing Units: 160,281

Official Website: https://www.capecod.gov/

Federal GNIS/FIPS Codes for Barnstable

GNIS ID: 606927

FIPS State / County Code: 25 / 001

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

About Massachusetts

From the US Census

Population

Year	Population
2019 Est:	6,894,883 (5.3% increase since 2010)
2010:	6,547,629 (3.13% increase since 2000)
2000:	6,349,097

Websites for State of Massachusetts

Official Website: https://www.mass.gov/

Tourism: https://www.visitma.com/

Parks: https://www.mass.gov/visit-massachusetts-state-parks

Fishing: https://www.mass.gov/freshwater-fishing

Hunting: https://www.mass.gov/topics/hunting

Federal GNIS/FIPS Codes for State of Massachusetts

GNIS ID: 606926

FIPS State: 25

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

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 508 code has been Overlayed with the 774 area code. New phone numbers in the Chatham area will be assigned with one of these codes: 508 or 774. As a result, placing a call in the Chatham area will require 10-digit dialing (where you enter both the area code and then the phone number).
<2>	ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a community (such as Chatham). When looking for a ZIP Code, whether Chatham or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<3>	The elevation is an estimate for the area around Chatham - it will be higher in some places and lower in others.
<4>	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.
<5>	The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Chatham. 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.
<6>	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).
<7>	Longitude & latitude values may not be the geographic center of Chatham, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.
<8>	Name of the USGS 7.5 Minute topographic map which includes Chatham.