Connecticut County Index is a 1:125,000-scale polygon feature-based layer that includes a polygon feature for every Connecticut county. There are 8 polygon features in this layer. The corresponding county number and county name attributes uniquely identify individual county polygon features. The county number values are based on an alphabetic sort of county names and range from 1 to 8.
Edition date
Includes one polygon feature for each Connecticut county. (Source: State of Connecticut, Department of Environmental Protection and U.S. Geological Survey, National Mapping Program)
Internal feature number. (Source: ESRI)
Feature geometry. (Source: ESRI)
FIPS State and County Code - ID number for the Connecticut County based on U.S. Department of Commerce, Bureau of the Census, Geography Division, 1990, Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas (Federal Information Processing Standard 6-4): Washington, DC, National Institute of Standards and Technology. FIPS PUB 6-4, which lists County Codes for Connecticut and all othe US States is available at http://www.itl.nist.gov/fipspubs/fip6-4.htm (Source: U.S. Department of Commerce, Bureau of the Census)
| Value | Definition |
|---|---|
| 09001 | Fairfield |
| 09003 | Hartford |
| 09005 | Litchfield |
| 09007 | Middlesex |
| 09009 | New Haven |
| 09011 | New London |
| 09013 | Tolland |
| 09015 | Windham |
County Number - ID number for the County established by the State of Connecticut, Department of Environmental Protection, based on an alphabetic sort of couny names. This attribute value is deprecated in favor of the CNTY_COD attribute established and in us by the Connecticut Office of Policy and Management. (Source: State of Connecticut, Department of Environmental Protection)
| Value | Definition |
|---|---|
| 1 | Fairfield |
| 2 | Hartford |
| 3 | Litchfield |
| 4 | Middlesex |
| 5 | New Haven |
| 6 | New London |
| 7 | Tolland |
| 8 | Windham |
County Code - Numeric Code for the County established by Office of Policy and Management. These codes are listed at http://www.opm.state.ct.us/pdpd3/data/twn.htm (Source: State of Connecticut, Office of Policy and Management)
| Value | Definition |
|---|---|
| 1 | Fairfield |
| 3 | Hartford |
| 5 | Litchfield |
| 7 | Middlesex |
| 9 | New Haven |
| 11 | New London |
| 13 | Tolland |
| 15 | Windham |
County Name - Text values that correspond to numeric COUNTY_NO attribute values. COUNTY is the English language equivalent of (decodes) the COUNTY_NO field. (Source: U.S. Department of Commerce, Bureau of the Census)
Includes one polygon feature for each Connecticut county, uniquely identified with County number and County name attribute values. Label polygon features with the COUNTY attribute to display county names on a map.
Connecticut Office of Policy and Management County Codes are available at County Codes established by the Connecticut Office of Policy and Management are listed at http://www.opm.state.ct.us/pdpd3/data/twn.htm FIPS PUB 6-4, which lists County Codes for Connecticut and all othe US States is available at http://www.itl.nist.gov/fipspubs/fip6-4.htm
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Connecticut County Index is a general purpose index map of Connecticut counties based on information compiled at 1:125,000 scale (1 inch equals approximately 2 miles). The layer is designed to be used to depict Connecticut counties at small scales or on small maps printed on regular size (8.5 x 11 inch) paper, for example. This County Index layer does not accurately represent Connecticut county boundaries because it was digitized at 1:125,000 scale. Do not display, map or analyze the County Index layer with information collected at larger scales. To depict more accurate 1:24,000-scale Connecticut state, county, and town boundaries on a map, use the layer named Town, which is also published by the State of Connecticut Department of Environmental Protection.
Town_Index.shp was originally in ArcInfo Coverage format and digitized in 1986 using the Connecticuct State Plane Coordinate System, North American Datum of 1927 (NAD27). In 1999, the data was converted to ESRI Shapefile format and to the Connecticut State Plane Coordinate System, North American Datum of 1983 (NAD83). The 2005 edition includes complete metadata. Town_Index.shp is in Shapefile format. Prior to 2005, this shapefile was named Town.shp. Town_Index is based on boundary information published on a 1;125,000-scale U.S. Gelogical Survey planimetric map of the State of Connecticut. The planimetry for this map was revised in 1974.
County_Index.shp is in Shapefile format. Prior to 2005, this shapefile was named County.shp. The 2005 edition includes complete metadata.
County_Index is in GeoDatabase Feature Class format.
Create County Index layer - County Index is derived from the 1:125,000-scale Town Index layer, which is also published by the State of Connecticut, Department of Environmental Protection. To derive county polygon features from town polygon features, town features were attributed with county number and name values. Towns polygon features in the same county were then merged to form eight polygon features, one for each county. The TOWN_NO and TOWN attributes from the Town Index layer were replaced with CNTY_COD and COUNTY attributes that store county number and name, respectively. Using ArcView 3.3 software and an Avenue script named Table.ExportSorted (Peter Girard, author) available from the ArcScripts download page at www.esri.com, the polygon feature attribute table was permanently sorted in ascending order by County number.
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Convert to GeoDatabase Feature Class format - Defined new Feature Class named County_Index; and imported the attribute definitions, loaded features and imported metadata from County_Index.shp shapefile. Spatial Reference Properties for Feature Class: Coordinate System: NAD_1983_StatePlane_Connecticut_FIPS_0600_Feet XY Domain MinX: 100000; MaxX: 2247483.645 XY Domain MinY: 200000; MaxY: 2347483.645 Precision: 1000
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All attributes have valid values. Values are within defined domains. The County number and County name polygon attributes were manually entered.
The horizontal positional accuracy of this data is unknown. Avoid displaying or printing this information at map scales greater than 1:125,000 (1 inch equals approximately 2 miles).
The completeness of the data reflects the feature content of the data source, which a 1:125,000-scale planemetric map of Connecticut published by the U.S Geological Survey. This data is not updated.
Polygon features conform to the following topological rules. Polygons are single part. There are no duplicate polygons. Polygons do not self overlap. Polygons do not overlap other polygons. Establishment of logical consistency was orginally performed by the State of Connecticut, Department of Environmental Protection using ESRI ArcInfo software to manually create and control feature topology. The original minimum distance between vertices (ArcInfo Coverage fuzzy tolerance) and a minimum allowed overshoot length (ArcInfo Coverage dangle length) were not documented and unknown at the time this metadata was created in 2005. However, the original data was known to be topologically clean. After subsequently converting the data from ESRI ArcInfo Coverage to ESRI Shapefile format, no automated procedures or tests were performed to enforce the topology rules other than visual inspection.
No restrictions or legal prerequisites for using the data. The data is suitable for use at appropriate scale, and is not intended for maps printed at scales greater or more detailed than 1:125,000 scale (1 inch equals approximately 2 miles). Although this data set has been used by the State of Connecticut, Department of Environmental Protection, no warranty, expressed or implied, is made by the State of Connecticut, Department of Environmental Protection as to the accuracy of the data and or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the State of Connecticut, Department of Environmental Protection in the use of these data or related materials. The user assumes the entire risk related to the use of these data. Once the data is distributed to the user, modifications made to the data by the user should be noted in the metadata. When printing this data on a map or using it in a software application, analysis, or report, please acknowledge the State of Connecticut, Department of Environmental Protection and the U.S. Geological Survey, National Mapping Program as the source for this information. For example, include the following data source description when printing this layer on a map: Counties - From the County Index layer, compiled and published by CT DEP and the USGS. Source map scale is 1:125,000.
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Although this data set has been used by the State of Connecticut, Department of Environmental Protection, no warranty, expressed or implied, is made by the State of Connecticut, Department of Environmental Protection as to the accuracy of the data and or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the State of Connecticut, Department of Environmental Protection in the use of these data or related materials. The user assumes the entire risk related to the use of these data. Once the data is distributed to the user, modifications made to the data by the user should be noted in the metadata.
| Data format: | in format Shapefile, Feature Class (version ArcGIS) |
|---|---|
| Network links: | http://www.ct.gov/deep |
The data distributor does not provide custom GIS analysis or mapping services. Data is available in a standard format and may be converted to other formats, projections, coordinate systems, or selected for specific geographic regions by the party receiving the data.
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