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 new 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 numeric identifier 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 South Tucson: 2411943

GNIS ID for Pima County: 25446

GNIS ID for Arizona: 1779777

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 South Tucson:

Place (Community) Code:	68850
State Code:	04 (Arizona)
County Code:	019 (Pima 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:	04/68850
State/County Code:	04/019

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 Arizona:	04		1779777
Pima County:	04/019		25446
South Tucson:	04/68850		2411943

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 South Tucson, it is a point within South Tucson 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 South Tucson, the GNIS GPS location is given as:

Lat:   32° 11' 43"   (or 32.2°)

Lon:   -110° 58' 7"   (or -110.97°)  

Determined by its statistical needs, the Census Bureau has defined a sampling area for South Tucson - 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 South Tucson, the Census 2010 GPS location is given as:

Lat:   32° 11' 43"   (or 32.2°)

Lon:   -110° 58' 8"   (or -110.97°)  

The map point defined by the Census Bureau lies 80.9 feet to the west<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:   32° 11' 45"   (or 32.2°)

Lon:   -110° 58' 8"   (or -110.97°)  

The GPS location given for the 2000 Census lies 233.3 feet to the north<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. South Tucson is located in Region #4 (the West Region).

In turn, the US Census Bureau has further divided each Region into Divisions. South Tucson is located in Division #8 (the Mountain Division).

The Office of Management and Budget (OMB) has created ten Federal Regions. South Tucson is located in Region IX (Region 9).

The Federal Emergency Management Agency (FEMA) has created ten Management Regions. South Tucson is located in Region IX (Region 9).

Referenced GNIS Records ...

GNIS ID #11648   (Name of Record: South Tucson)

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: Pima

Map Name: Tucson

Lat: 32.199521       Lon: -110.968425  

Elev: 739 ft.

GNIS ID #2411943   (Name of Record: City of South Tucson)

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: Pima

Map Name: Tucson

Lat: 32.1954635       Lon: -110.96883  

Elev: 741 ft.

Referenced FIPS Records ...

FIPS Code: 04/68850   (Place Name: South Tucson)

County: Pima     (FIPS State/County: 04/019)

Class: C1

Identifies an incorporated place (ie- South Tucson) 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- Pima County).

GSA Code: 460

MRF Code: 340

MSA Code: 8520

Off-the-Road Links ...

Unfortunately, we don't know of a website for South Tucson. If you can help, please contact us through our Feedback Page.

The official website for Pima County: www.co.pima.az.us/

The official website for State of Arizona: https://az.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)