Illinois Department of Energy a, Illinois Geographic Information System, 1991, Census Information for Incorporated Places in Illinois, 1:100,000, 1991 (Points): IDNR GIS Database municipal90pt, Illinois Department of Natural Resources, Champaign, Illinois.Online Links:
- Downloadable Data (Shift-Click to download data file) <URL:http://www.isgs.uiuc.edu/nsdihome/browse/statewide/municipal90pt.e00>
- Browse Graphic (GIF) Screen-size image representing the nature of the data. <URL:http://www.isgs.uiuc.edu/nsdihome/browse/statewide/municipal90ptb.gif>
- Text (.txt) version of this Metadata file. (Shift-Click to download documentation) <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/municipal90pt.txt>
- HTML (.html) version of this Metadata file. (Shift-Click to download documentation) <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/municipal90pt.html>
This is a Point data set. It contains the following vector data types (SDTS terminology):
The map projection used is Lambert Conformal Conic.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 1.0
Ordinates (y-coordinates) are specified to the nearest 1.0
Planar coordinates are specified in FEET
The horizontal datum used is NAD27.
The ellipsoid used is CLARKE1866.
The semi-major axis of the ellipsoid used is 6378206.4 meters.
The flattening of the ellipsoid used is 1/294.98.
Attribute items are in typical ARC/INFO feature class format.
Those items requiring additional explanation are:
Point attributes:
FIPS_PLACE - FIPS code for each census designated place or
incorporated area. A CDP comprises densely
settled concentrations of population that are
identifiable by name, but not be legally
incorporated.
from FIPS Publication 55.
LRN -
NAME - Name of the municipality.
from Census of Population and Housing, 1990:
Public Law 94-171. Data on CD-ROM:
U.S. Bureau of the Census.
TYPE - See DOMAIN. General indication of size.
from Census of Population and Housing, 1990:
Public Law 94-171. Data on CD-ROM:
U.S. Bureau of the Census.
Domain: roughly based on population differences
<blank> - not an incorporated area
(internal islands)
city - city
town - town
village - village
CDP - Census Designated Place
no census - Added independent of the census data
TOTALPOP - Total 1990 census population within a census block.
MALE - The number of people who identified themselves
as being 'male'.
FEMALE - The number of people who identified themselves
as being 'female'.
WHITE - The number of people who identified their race
as 'white'.
AFRICAN_AMER - The number of people who identified their race
as 'black'.
NATIVE_AMER - The number of people who identified themselves
as American Indian, Eskimo or Aleut
ASIAN_PACIFIC - The number of people who identified themselves
as Asian or within one of the Asian Pacific
Island groups.
OTHER - Number of people not included in any of the
defined race categories.
HOUSING_UNITS - Total housing units. A housing unit includes a
house, apartment, a mobile home, trailer, a group
of rooms of a single room.
GIS processing: Illinois Department of Energy and Natural Resources
Documentation: Illinois Department of Energy and Natural Resources,
M. Joselyn, D. Nelson and S. Beaverson
Quality Control: Illinois Department of Energy and Natural Resources
217-333-4747 (voice)
217-244-0802 (FAX)
isgs@isgs.uiuc.edu
These data are appropriate for use in local and regional demographic analysis. A municipality may be represented of more than one points. Locations are subject to change and should not be considered definitive.
US Department of Commerce, Bureau of the Census., 1991, TIGER/Line files, issued July, 1991 on CD-ROM issued July, 1991 and associated technical documentation..
Illinois Dept of Energy and Nat, Illinois Geographic Information System (, 1993, Towns, 1993.
Illinois Department of Energy a, Illinois Geographic Information System, 1991, Municipal Boundaries in Illinois: Incorporated Places: IDNR GIS Database municipal90, Illinois Department of Natural Resources, Champaign, Illinois.Online Links:
- Data Set Documentation <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/municipal90.html>
Illinois Department of Natural Resources, 1991, Municipalities With More Than 250 People at a Scale of 1:100,000 by County: IDNR GIS Database munbnd, Illinois Department of Natural Resources, Champaign, Illinois.Online Links:
- Data Set Documentation <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/munbnd.html>
Illinois Department and Natural, Office of Realty and Planning Energy a, 1990, 1990 Census Blocks for Illinois by County: IDNR GIS Database /<county_name>census90, Illinois Department of Natural Resources, Champaign, Illinois.Online Links:
- Data Set Documentation <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/census90.html>
Data are an accurate reflection of the Bureau of the Census TIGER/Line files. Attribute data are believed to be tied to the proper area with 100 percent accuracy relative to the Tiger/LINE data.
Data are derived from Tiger/LINE files and are believed to have reasonable positional accuracy to around 167 feet. This estimate is derived form USGS National Map Accuracy standards for map scale of 1:100,000.
All incorporateed places identified in the TIGER/Line files, 1991, are included.
Data set is topologically structured polygon data.
Are there legal restrictions on access or use of the data?
- Access_Constraints: none
- Use_Constraints:
- Reproduction or redistribution of copyrighted digital data sets or products derived therefrom outside of licensee's organization or entity is expressly forbidden. The only exception is redistribution to consultants working for the licensee, and then only for purposes, related to work for the licensee. Such consultants may not further reproduce or redistribute these data sets. None of these data shall be electronically duplicated on magnetic or optical media for use by others, in whole or in part, without permission of the appropriate custodial division within DNR.
Any hardcopies utilizing DNR data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent DNR data sets, nor to imply that changes they made were approved by DNR.
These data are not to be used for commercial profit.
217-333-4747 (voice)
217-244-0802 (FAX)
isgs@isgs.uiuc.edu
An Arc/Info .e00 (export) file is currently available free of charge at the Illinois Natural Resources Geospatial Data Clearinghouse. Refer to the Citation Information portion of this file for access to downloadable data and metadata, and a visual (GIF image) representation of the data. Shift-click to download the data set and related documentation. (Data and metadata offered separately, please download both files.)
The Illinois Department of Natural Resources (DNR) provides these geographic data "as is." DNR makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. DNR further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of DNR, no warranty, expressed or implied, is made by DNR regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.In no event shall the DNR have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by DNR.
217-333-4747 (voice)
217-244-0802 (FAX)
isgs@isgs.uiuc.edu
Illinois Natural Resources Geospatial Data Clearinghouse
Generated by mp version 2.8.11 on Mon Jan 29 15:19:38 2007