Miscellaneous Information

Various Identification Codes ...

GNIS Codes ...

The U.S. Board on Geographic Names (BGN) was created to address the problems caused by spelling and naming variations. The BGN will usually recognize an existing name or, when necessary, establish a name for a geographic feature (such as a mountain, lake, river, stream, city, town, village, dam, bridge, etc).

The BGN names are kept in a database called the Geographic Names Information System (GNIS) and it is the official Federal repository. The GNIS is operated and maintained by the U.S. Geological Survey (USGS).

A unique and permanent number has been assigned for each name in the GNIS database. These names and identifiers are definitive and it is intended that they are to be used by all departments of the Federal Government:

GNIS ID for Port Chester: 2391075

GNIS ID for Westchester County: 974157

GNIS ID for New York: 1779796

FIPS Codes ...

In a past effort, various federal agencies worked together to create a set of codes with a purpose similar to the GNIS codes. These codes are called the Federal Information Processing Standard (or the FIPS 55 codes). Although they are still used by some organizations, the FIPS codes are obsolete and will ultimately be replaced by the GNIS codes.

The following FIPS codes apply to Port Chester:

Place (Community) Code:	59223
State Code:	36 (New York)
County Code:	119 (Westchester County)

Since the Place and County FIPS codes are not unique and can be repeated in other States, it's necessary to combine the State code with the Place and County FIPS codes to uniquely identify them - for example:

State/Place Code:	36/59223
State/County Code:	36/119

As already mentioned, the FIPS codes are to be replaced by the GNIS codes. The following reflect those changes:

	FIPS Code	translates to	GNIS Code
State of New York:	36		1779796
Westchester County:	36/119		974157
Port Chester:	36/59223		2391075

GPS Location - GNIS vs Census ...

An important aspect of the GNIS code is that it assigns a GPS location (the latitude/longitude) to the geographic feature. This location is simply a point on the map and does not represent the size or shape of the feature. In the case of Port Chester, it is a point within Port Chester that might be a post office, the city hall or simply an intersection - the point should really be considered arbitrary and only indicating a general location.

For Port Chester, the GNIS GPS location is given as:

Lat:   41° 0' 19"   (or 41.01°)

Lon:   -73° 40' 4"   (or -73.67°)  

Determined by its statistical needs, the Census Bureau has defined a sampling area for Port Chester - this area also contains a map point. As with the GNIS code, the location of the Census point should be considered as being arbitrary within the sampling area.

For Port Chester, the Census 2010 GPS location is given as:

Lat:   41° 0' 16"   (or 41°)

Lon:   -73° 40' 1"   (or -73.67°)  

The map point defined by the Census Bureau lies 319.4 feet to the southeast<1> of the point given by the GNIS (see above).

You might note that the GPS location given for the 2010 Census is different than the location that was specified by the 2000 Census:

Lat:   41° 0' 18"   (or 41.01°)

Lon:   -73° 40' 7"   (or -73.67°)  

The GPS location given for the 2000 Census lies 475.8 feet to the west<2> of the point given by the 2010 Census.

Regional Codes ...

For statistical purposes, the US Census Bureau has divided the country into four Regions. Port Chester is located in Region #1 (the Northeast Region).

In turn, the US Census Bureau has further divided each Region into Divisions. Port Chester is located in Division #2 (the Middle Atlantic Division).

The Office of Management and Budget (OMB) has created ten Federal Regions. Port Chester is located in Region II (Region 2).

The Federal Emergency Management Agency (FEMA) has created ten Management Regions. Port Chester is located in Region II (Region 2).

ZIP Codes ...

While some people have used a ZIP code to identify a community, the purpose of the ZIP code was to make mail delivery more efficient by grouping addresses together. Although the ZIP Code doesn't specifically identify a village like Port Chester, it does identify addresses that are in (or near) Port Chester. It's important to remember that the boundaries of a ZIP Code are defined by the needs of the USPS and can be changed, re-assigned or overlapped with other ZIP Codes.

The ZIP code for Port Chester: 10573<3>

Referenced GNIS Records ...

GNIS ID #977392   (Name of Record: Port Chester)

Class: populated place

A place or area having clustered or scattered buildings and a permanent population (such as a city, settlement, town or village). The boundaries may or may not coincide with the perceived population.

A 'populated place' record may have a corresponding 'census' or 'civil' record. The information contained in the 'populated place' record applies only to the class and should not be confused with either the 'census' and 'civil' classes.

County: Westchester

Map Name: Glenville

Lat: 41.0017643       Lon: -73.6656834  

Elev: 13 ft.

GNIS ID #2391075   (Name of Record: Village of Port Chester)

Class: civil

A political division formed for administrative purposes (such as a borough, county, incorporated place, parish, town or township).

A 'civil' record may have a corresponding 'census' or 'populated place' record. The information contained in the 'civil' record applies only to the class and should not be confused with either the 'census' and 'populated place' classes.

County: Westchester

Map Name: Glenville

Lat: 41.0052956       Lon: -73.668027  

Elev: 20 ft.

Referenced FIPS Records ...

FIPS Code: 36/59223   (Place Name: Port Chester)

County: Westchester     (FIPS State/County: 36/119)

Class: C1

Identifies an incorporated place (ie- Port Chester) that does not serve as a primary county division - or in other words, it is included in and is part of a primary county division (ie- Westchester County).

GSA Code: 4930

MRF Code: 2925

MSA Code: 5600

Off-the-Road Links ...

The official website for Port Chester: www.portchesterny.com/

The official website for Westchester County: www.westchestergov.com/

The official website for State of New York: https://www.ny.gov/

The official website of the U.S. Board on Geographic Names (BGN)

The official website of the U.S. Geological Survey (USGS)

The official website of the U.S. Census Bureau

The official website of the U.S. Office of Management and Budget (OMB)

The official website of the U.S. Federal Emergency Management Agency (FEMA)