Montana State Library
20130808
Montana Towns
vector digital data
Montana State Library
This layer replaces the 2003 data set on the NRIS web site called "ct107"
withheld
This layer has point locations, elevations, and estimated populations for 629 Montana towns. Where a town corresponds to an incorporated place or a Census Designated Place, the 2010 population value is the official Census population of the place. The 2010 population of other towns are based on the populations of the 2010 Census Blocks that an area around the town covers. Every town also has estimated 1990 and 2000 populations of the area currently defined as representing the town. For incorporated and Census Designated Places, these estimates will generally not equal the 1990 or 2000 Census populations of those places because their boundaries may have changed since the earlier Censuses.
The towns selected for inclusion in this layer are the ones that were shown on 1:250,000 scale U.S. Geological Survey maps in the 1970s and on the Montana Highway Map published by the state in the 1990s. Some Census Designated Places that seem to represent suburban regions or rural subdivisions are not included in this layer. In some cases, there is disagreement between the names and/or extents of these towns and the Census Designated Places that cover all or part of the same area. These discrepancies are noted in the Alt_Name field of the layer.
The locations of the towns generally come from the U.S. Geological Survey Geographic Names Information System. The locations shown in the previous version of this layer have been adjusted if they did seem not to reflect the location of the main part of the town. Towns that have been moved have a value of 1 in the "Shifted" attribute field.
This layer is intended for placing point locations of towns on small-scale maps of Montana. Population estimates are included to assist in choosing which towns to show and to allow differential symbolization of towns based on population.
The boundaries used for estimating the populations of the towns are included as a separate layer called "Town_Areas" in the downloadable layer package. Population is estimated by adding the populations of all Census Blocks that are completely inside the town area to a proportional population of all the Census Blocks that are partially covered by the town area. If 20 percent of a Census Block is covered by the town area, 20 percent of that block's population is added to the town population.
Most towns that are not incorporated or Census Designated places are represented as a circle two miles in diameter centered on the town. In areas where such circles would overlap with other towns, the towns may be represented by a two-kilometer circle or a manually drawn area. The former cities of Butte and Anaconda, which have organizationally merged with the counties that they were in, are represented as manually drawn areas because there are no Census places that cover just the cities.
For some towns, the population is shown as zero because there are no Census Blocks that are completely inside the town area and the large size and low population density of the blocks in the area results in an estimated population of zero. To see what the maximum possible Census population value for any place is, see the max_2010, max_2000, and max_1990 fields. These show the total population of all the Census Blocks that are partially or entirely covered by each place.
This layer replaces an earlier version that gave population information for the towns based on the Census definitions of the town areas for the year of the population estimate, rather than having all estimates be for the 2010 area definition as is in the present layer. The boundaries of some of the towns have changed from this layer, the spelling of some of the town names have been changed, and 5 more towns have been added.
20100401
Ground Condition
-116.068531
-103.690753
49.128759
44.431234
ISO 19115 Topic Category
boundaries
location
society
City
Cities
Town
Towns
Population
Montana
None
The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.
Montana State Library
mailing
PO Box 201800
Helena
MT
59620-1800
406-444-5354
406-444-4799
406-444-0266
geoinfo@mt.gov
Vector
Simple
FALSE
0
TRUE
FALSE
Towns.dbf
Feature Class
0
OBJECTID
OBJECTID
OID
4
10
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
SHAPE
Feature geometry
Shape
Geometry
8
0
0
Esri
Coordinates defining the features.
Town_ID
Unique ID number for the town. This ID may be used to link the features to the Town_Areas layer or to the previous (ct107) version of the layer.
Town_ID
SmallInteger
2
5
0
Name
Name of the town.
Name
String
40
0
0
County
Name of the County that contains the town.
County
String
20
0
0
Pop_2010
Estimated population of the town based on the 2010 Census. Where the town is an incorporated or Census Designated Place, this equals the official Census population of the place.
Pop_2010
Integer
4
10
0
Pop_2000
Estimated population, based on the 2000 Census, of the currently defined area of the town. If the defined area of the town is not exactly the same as it was in 2000, this will NOT equal the 2000 Census population of the town.
Pop_2000
Integer
4
10
0
Pop_1990
Estimated population, based on the 1990 Census, of the currently defined area of the town. If the defined area of the town is not exactly the same as it was in 1990, this will NOT equal the 1990 Census population of the town.
Pop_1990
Integer
4
10
0
Type
This field indicates if the town is an incorporated or Census Designated place or describes the type of region used to estimate the population.
Incorporated Place
The town is a legally-incorporated Montana City or Town and the official 2010 population is shown
Census Designated Place
The town's boundary has been defined by the Census Bureau and the official 2010 population is shown
Census Designated Place with Alternate Name
The town is a Census Designated Place and its official 2010 population is shown, but the name is not the same as the name used by the Census
2-mile diameter circle
2-mile diameter circle, Part of a CDP
2-mile diameter circle that intersects or is contained by a Census Designated Place
2-kilometer diameter circle
2-kilometer diameter circle, Part of a CDP
2-mile kilometer circle that intersects or is contained by a Census Designated Place
Manually defined region
Type
String
50
0
0
Lon
Longitude of the town location
Lon
Double
8
38
8
Lat
Latitude of the town location
Lat
Double
8
38
8
Elevation
Elevation of the town point location in feet. Estimated from the 1/3 arc-second National Elevation Dataset, 2013.
Elevation
Integer
4
10
0
Alt_Names
Indicates the names of Census Designated Places associated with the town that are different from the town name, or changes in the town name from the previous version of the layer.
Alt_Names
String
254
0
0
Max_2010
Total population of all 2010 Census Blocks that touch the town area.
Max_2010
Integer
4
10
0
Max_2000
Total population of all 2000 Census Blocks that touch the town area.
Max_2000
Integer
4
10
0
Max_1990
Total population of all 1990 Census Blocks that touch the town area.
Max_1990
Integer
4
10
0
GeoID10
Census ID of the 2010 incorporated or Census Designated place that corresponds to the town.
GeoID10
String
7
0
0
Shifted
Flag to indicate towns whose locations have been shifted from the previous version and/or GNIS location.
0
Location has not been shifted
1
Location has been shifted
Shifted
SmallInteger
2
5
0
Montana State Library
mailing
PO Box 201800
Helena
MT
59620-1800
406-444-5354
406-444-4799
406-444-0266
geoinfo@mt.gov
Downloadable Data
The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.
ESRI Shape file
withheld
20140131
20130807
Montana State Library
mailing
PO Box 201800
Helena
MT
49620-1800
406-444-5354
406-444-4799
406-444-0266
geoinfo@mt.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
20140617
09450700
1.0
FALSE
BOG_CitiesandTowns
002
Geographic
GCS_North_American_1983
Angular Unit: Degree (0.017453)
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20221117
10563100
20221117
10563100
Esri ArcGIS 12.8.0.29751
BOG_CitiesandTowns
Enterprise Geodatabase Feature Class
dataset
EPSG
6.5(3.0.1)
0
20221117