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1. IDENTIFICATION INFORMATION

1.1 CITATION (8.1) ORIGINATOR: Department of Natural Resources, Office of Realty & Planning, Enery & Environmental Research (8.2) PUBLICATION DATE: 1990 (8.4) TITLE: Digital file name is - CENSUS90 Data set title is - 1990 Census blocks

1.2 DESCRIPTION 1.2.1 ABSTRACT: Census block polygons for all of Illinois derived from TIGER/Line Files, 1990, Issued July 1991, Bureau of the Census, US Department of Commerce. Nominal scale of 1:100,000. The Office of Energy & Environmental Research has additional STF1A and STF3A data. 1.2.2 PURPOSE: These data are appropriate for use in local and regional demographic analysis. Attributes include population, population density, ethnicity, and number of housing units.

1.3 TIME PERIOD OF CONTENT (9.1) SINGLE DATE/TIME (9.1.1) CALENDAR DATE: 1990 1.3.1 CURRENTNESS REFERENCE: 1990 1.4 STATUS 1.4.1 PROGRESS: Complete 1.4.2 MAINTENANCE AND UPDATE FREQUENCY: none planned

1.5 SPATIAL DOMAIN 1.5.1 BOUNDING COORDINATES 1.5.1.1 WEST BOUNDING COORDINATE: -92.0 1.5.1.2 EAST BOUNDING COORDINATE: -87.5 1.5.1.3 NORTH BOUNDING COORDINATE: 42.5 1.5.1.4 SOUTH BOUNDING COORDINATE: 37.0

1.6 KEYWORDS 1.6.1 THEME 1.6.1.1 THEME KEYWORD THESAURUS: none 1.6.1.2 THEME KEYWORD: demographic 1.6.1.2 THEME KEYWORD: census 1.6.2 PLACE 1.6.2.1 PLACE KEYWORD THESAURUS: none 1.6.2.2 PLACE KEYWORD: Illinois

1.7 ACCESS CONSTRAINTS: none

1.8 USE CONSTRAINTS: Reproduction or redistribution of copyrighted digital datasets (wells) 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 datasets. None of the data on this CD-ROM 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 datasets 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 datasets, nor to imply that changes they made were approved by DNR.

This data is not to be used for commercial profit.

1.9 POINT OF CONTACT (10.1) CONTACT PERSON PRIMARY (10.1.1) CONTACT PERSON: Sheryl Oliver (10.1.2) CONTACT ORGANIZATION: Illinois Department of Natural Resources (10.3) CONTACT POSITION: GIS Manager (10.4) CONTACT ADDRESS: (10.4.1) ADDRESS TYPE: mailing address (10.4.2) ADDRESS: 524 S. Second (10.4.3) CITY: Springfield (10.4.4) STATE OR PROVINCE: Illinois (10.4.5) POSTAL CODE: 62701 (10.4.6) COUNTRY: USA (10.5) CONTACT VOICE TELEPHONE: 217-785-8586 (10.7) CONTACT FACSIMILE TELEPHONE: (10.8) CONTACT ELECTRONIC MAIL ADDRESS:

1.13 NATIVE DATA SET ENVIRONMENT: Arc/Info version 7.0.3 software for UNIX, with no8.3 setting.



2. DATA QUALITY INFORMATION

2.1 ATTRIBUTE ACCURACY 2.1.1 ATTRIBUTE ACCURACY REPORT: Data is an accurate reflection of the Bureau of the Census TIGER/Line files and limited attributes from the STF1A files. Attribute data is believed to be tied to the proper census tract with 100% accuracy relative to the Tiger/LINE data. 2.2 LOGICAL CONSISTENCY: Data set is topologically structured polygon data. 2.4 POSITIONAL ACCURACY 2.4.1 HORIZONTAL POSITIONAL ACCURACY 2.4.1.1 HORIZONTAL POSITIONAL ACCURACY REPORT: 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.

3. SPATIAL DATA ORGANIZATION INFORMATION

3.2 DIRECT SPATIAL REFERENCE METHOD: Vector



4. SPATIAL REFERENCE INFORMATION

4.1 HORIZONTAL COORDINATE SYSTEM DEFINITION 4.1.2 PLANAR 4.1.2.1 MAP PROJECTION 4.1.2.1.1 MAP PROJECTION NAME: Lambert Conformal Conic 4.1.2.1.2 MAP PROJECTION-PARAMETERS 4.1.2.1.2.1 LATITUDE OF FIRST STANDARD PARALLEL: 33 0 0.000 4.1.2.1.2.1 LATITUDE OF SECOND STANDARD PARALLEL: 45 0 0.000 4.1.2.1.2.2 LONGITUDE OF CENTRAL MERIDIAN: -89 30 0.000 4.1.2.1.2.3 LATITUDE OF PROJECTION ORIGIN: 33 0 0.000 4.1.2.1.2.4 FALSE EASTING: 2999963.52 feet 4.1.2.1.2.5 FALSE NORTHING: 0.00000 4.1.4 GEODETIC MODEL 4.1.4.1 HORIZONTAL DATUM NAME: NAD27 4.1.4.2 ELLIPSOID NAME: CLARKE1866 4.2 VERTICAL COORDINATE SYSTEM DEFINITION 4.2.1 ALTITUDE SYSTEM DEFINITION 4.2.1.1 ALTITUDE DATUM NAME: NGVD29



5. ENTITY AND ATTRIBUTE INFORMATION

5.2 OVERVIEW DESCRIPTION 5.2.1 ENTITY AND ATTRIBUTE OVERVIEW: ATTRIBUTE LABEL: FIPS_COUNTY, 3, 3, I ATTRIBUTE DEFINITION: FIPS code for each county. ATTRIBUTE DEFINITION SOURCE: FIPS Publication 55. DOMAIN: 1-203

ATTRIBUTE LABEL: MCD, 5, 5, I ATTRIBUTE DEFINITION: Minor Civil Division, Primary political or administrative divisions of a county, FIPS Publication 55. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN:

ATTRIBUTE LABEL: BLOCK, 4, 4, C ATTRIBUTE DEFINITION: Census block code ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN:

ATTRIBUTE LABEL: CENID, 5, 5, I ATTRIBUTE DEFINITION: Two digit state and three digit county FIPS codes ATTRIBUTE DEFINITION SOURCE: U.S. Bureau of the Census DOMAIN: fips code for Illinois is 17

ATTRIBUTE LABEL: POLYID, 10, 10, I ATTRIBUTE DEFINITION: Temporary code assigned to every polygon in the Tiger database. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN:

ATTRIBUTE LABEL: FIPS_PLACE, 5, 5, I ATTRIBUTE DEFINITION: Places include census designated places, incorporated places and consolidated cities. FIPS Publication 55 ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN:

ATTRIBUTE LABEL: US_CONGRESS, 2, 2, I ATTRIBUTE DEFINITION: 101st Congressional Districts, Districts used to elect members to the Federal House of Representatives. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN: 1 - 8

ATTRIBUTE LABEL: TOTALPOP, 10, 10, I ATTRIBUTE DEFINITION: Total 1990 census population within a census block ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN: positive integer

ATTRIBUTE LABEL: POPDEN90, 10, 10, N, 3 ATTRIBUTE DEFINITION: Persons per square kilometer within a census block, 1990. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN:

ATTRIBUTE LABEL: RECID, 6, 6, I ATTRIBUTE DEFINITION: Logical record number - The record number of the associated record found in the original P.L. 94-171 data file. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: US Bureau of the Census. DOMAIN:

ATTRIBUTE LABEL: SQKM ATTRIBUTE DEFINITION: Area of the census block in square kilometers ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM, U.S. Bureau of the Census. DOMAIN: positive real number

ATTRIBUTE LABEL: TOTAL18+ ATTRIBUTE DEFINITION: The number of people 18 years and older in a census block. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN: positive integer

ATTRIBUTE LABEL: TOTAL18- ATTRIBUTE DEFINITION: The number of people younger than 18 years of age in a census block. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN: positive integer

ATTRIBUTE LABEL: WHITE ATTRIBUTE DEFINITION: The number of people who identified their race as 'white'. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN:

ATTRIBUTE LABEL: AFRICAN_AMER ATTRIBUTE DEFINITION: The number of people who identified their race as 'black'. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN:

ATTRIBUTE LABEL: NATIVE_AMER ATTRIBUTE DEFINITION: The number of people who identified themselves as American Indian, Eskimo or Aleut ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN:

ATTRIBUTE LABEL: ASIAN_AMER ATTRIBUTE DEFINITION: The number of people who identified themselves as Asian or within one of the Asian Pacific Island groups. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN:

ATTRIBUTE LABEL: OTHER ATTRIBUTE DEFINITION: Number of people not included in any other race categories. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN:

ATTRIBUTE LABEL: HISPANIC ATTRIBUTE DEFINITION: The number of people who identified themselves as being of Hispanic origin. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN:

ATTRIBUTE LABEL: HOUSING_UNITS ATTRIBUTE DEFINITION: Total housing units. A housing unit includes a house, apartment, a mobile home, trailer, a group of rooms of a single room. ATTRIBUTE DEFINITION SOURCE: Census of Population and Housing, 1990: Public Law 94-171. Data on CD-ROM: U.S. Bureau of the Census. DOMAIN:

6. DISTRIBUTION INFORMATION

6.1 DISTRIBUTOR (10.2) CONTACT ORGANIZATION PRIMARY: Illinois Department of Natural Resources (10.3) CONTACT POSITION: Database Administrator (10.4) CONTACT ADDRESS (10.4.1) ADDRESS TYPE: mailing address (10.4.2) ADDRESS: 524 S. Second (10.4.3) CITY: Springfield (10.4.4) STATE OR PROVINCE: Illinois (10.4.5) POSTAL CODE: 62704 (10.4.6) COUNTRY: USA (10.5) CONTACT VOICE TELEPHONE: 217-785-8586 (10.7) CONTACT FACSIMILE TELEPHONE: (10.8) CONTACT ELECTRONIC MAIL ADDRESS:

6.3 DISTRIBUTION LIABILITY: The Illinois Department of Natural Resources (DNR) provide these geographic data "as is." DNR make 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.



7. METADATA REFERENCE SECTION

7.1 METADATA DATE: 19950321 7.4 METADATA CONTACT (10.1) CONTACT PERSON PRIMARY (10.1.1) CONTACT PERSON: Sheryl Oliver (10.1.2) CONTACT ORGANIZATION: Illinois Department of Natural Resources (10.4) CONTACT ADDRESS (10.4.1) ADDRESS TYPE: mailing address (10.4.2) ADDRESS: 524 S. Second (10.4.3) CITY: Springfield (10.4.4) STATE OR PROVINCE: Illinois (10.4.5) POSTAL CODE: 62704 (10.4.6) COUNTRY: USA (10.5) CONTACT VOICE TELEPHONE: 217-785-8586 (10.7) CONTACT FACSIMILE TELEPHONE: (10.8) CONTACT ELECTRONIC MAIL ADDRESS: 7.5 METADATA STANDARD NAME: FGDC Content Standards for Digital Geospatial Metadata 7.6 METADATA STANDARD VERSION: Version of June 8, 1994

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