system filename: cen80 file size = 3.2 mb Revisions and updates to this layer include: 2.) filename: cen801298 The December 1998 update to this layer consisted of projecting the data from NAD27 datum, State Plane projection, units of measure feet TO: NAD83 DATUM, State Plane PROJECTION, UNITS OF MEASURE METERS. This was done to comply with the NC Geographic Information Coordinating Council's "Statement of Direction for North Carolina Corporate Geographic Database Horizontal Reference, Datum and Unit of Measure". This reprojecting was done in various ways depending on the data type and content. Vector data was projected using the 'project' command in ESRI's Arc software and topology was cleaned and built based on coverage needs. Raster data was projected using ESRI's Grid module and various steps as applicable. 1.) filename: cen80794 July 1994 - Due to discrepancies in population totals, the DEHNR-State Center for Health and Environmental Statistics, Environmental Statistics and GIS Section reviewed the population totals and corrected inaccuracies in July 1994. Due to funding constraints, the previous file had only been thoroughly quality-controlled within the Albemarle-Pamlico Estuarine Study Area. The previous version has been deleted and was not archived.
US Department of Commerce, Bureau of the Census, 19981201, onemap_prod.SDEADMIN.cen80: US Department of Commerce, Bureau of the Census, Washington, D.C..Online Links:
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.002048
Ordinates (y-coordinates) are specified to the nearest 0.002048
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257222.
| Range of values | |
|---|---|
| Minimum: | 197.876 |
| Maximum: | 3797056.500 |
| Units: | meters |
| Resolution: | 0.001 |
Sequential unique whole numbers that are automatically generated.
| Value | Definition |
|---|---|
| ED | Enumeration district |
| TR | Census tract |
| TS | Township |
| BL | Block |
| Value | Definition |
|---|---|
| E | East |
| C | Central |
| W | West |
Census unit numbers vary in length and combination of numbers and letters
| Formal codeset | |
|---|---|
| Codeset Name: | Federal Information Processing Standard |
| Codeset Source: | US Dept. of Commerce, Bureau of the Census |
| Range of values | |
|---|---|
| Minimum: | -9000 |
| Maximum: | 99999 |
| Range of values | |
|---|---|
| Minimum: | 0.00 |
| Maximum: | 223,930.80 |
| Units: | Feet |
| Resolution: | 0.01 |
Coordinates defining the features.
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 5,912 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 5,912 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 3,161 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 3,166 |
| Range of values | |
|---|---|
| Minimum: | 30.795 |
| Maximum: | 90443.234 |
| Units: | meters |
| Resolution: | 0.001 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 8,921 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 1 |
CEN80.PAT Polygon Attribute Table COLUMN ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION 1 AREA 4 12 F 3 Total area in meters 5 PERIMETER 4 12 F 3 Total perimeter in meters 9 CEN80# 4 5 B - Poly internal id number 13 CEN80-ID 4 5 B - Poly user id number 17 CE80 12 13 C 0 Census unit id number 29 GEOG 4 5 C - Geographic division 33 LAKES 4 5 B - Item used to identify surface waters (negative numbers = lakes) 37 CO-NAME 12 13 C - County name 49 POP.TOTAL 4 8 B - Total population for polygon 53 CO# 4 5 B - Federal Information Processing Standard for the county 57 REGION 2 2 C - East, Central, or West 59 ACRES 4 12 F 2 Area/43560 63 POP.ACRE1980 8 12 F 3 Population per acre 71 POPDEN.SQMILE 8 12 F 3 Population per square mile 79 FIPS 3 3 C - County FIPS code CEN80.AAT Arc Attribute Table COLUMN ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION 1 FNODE# 4 5 B - From-node id of linear feature 5 TNODE# 4 5 B - To-node id of linear feature 9 LPOLY# 4 5 B - Left-side polygon id of linear feature 13 RPOLY# 4 5 B - Right-side polygon id of linear feature 17 LENGTH 4 12 F 3 Length of linear feature in meters 21 CEN80# 4 5 B - Internal id number 25 CEN80-ID 4 5 B - Internal id number
Bureau of the Census Director, Data User Service Center Chief, U.S. Department of Commerce Bureau of the Census Data User Service Center Washington, D.C.20233 State Center for Health Statistics Environmental Statistics and GIS Section GIS Laboratory NC Dept. of Health and Human Services 222 N. Dawson Street, Cotton Building Raleigh, North Carolina 27604 NCCGIA Director, Karen Siderelis Database Administration, Zsolt Nagy Database Management, Ken Shaffer Project Manager, Ken Shaffer North Carolina Center for Geographic Information and Analysis Governor's Office Office of State Planning 301 North Wilmington Street, Suite 700 Raleigh, NC 27601-2828
(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@cgia.state.nc.us
This file was developed to enable a user to see population and housing statistics from the 1980 Census as a way of tracking population and housing counts over time. This data was created to assist governmental agencies and others in making resource management decisions through use of a Geographic Information System (GIS).
US Dept. of Commerce, Bureau of the Census, 1982, 1980 Census Boundaries/Population: US Dept. of Commerce, Bureau of the Census, Washington, D.C..
NC Center for Geographic Information and Analysis, 1994, 1980 Census Boundaries/Population: NC Center for Geographic Information and Analysis, Raleigh, North Carolina.
DEHNR-State Center for Health a, Environmental Statistics & GIS Section, 199407, 1980 Census Boundaries/Population: DEHNR-State Center for Health and Environmental Statistics, Environmental Statistics & GIS Section, Raleigh, North Carolina.
Person who carried out this activity:
(301) 763-4100 (voice)
Person who carried out this activity:
(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@cgia.state.nc.us
Person who carried out this activity:
(919) 733-4728 (voice)
Data sources used in this process:
Data sources used in this process:
NC Center for Geographic Information and Analysis, 1982, 1970 Census Boundaries/Population: NC Center for Geographic Information and Analysis, Raleigh, NC.Online Links:
- CGDB layer listing and Metadata - <http://www.cgia.state.nc.us/cgdb/index.html>
The US Dept. of Commerce, Bureau of the Census delineated the 1980 census boundaries on maps at approximately 1:126,720-scale. An ARC/INFO version 5.0 coverage was created and attributed for the data. The attributes include census data, including population totals per polygon, per square mile, and per acre. The digital files were plotted and overlayed to the originals and linework and label corrections were made. Due to discrepancies in population totals, the DEHNR-State Center for Health and Environmental Statistics, Environmental Statistics & GIS Section reviewed the population totals and corrected inaccuracies in July 1994.
The 1980 Boundaries/Population data were mapped from paper blueline census maps and line check plots were edited within the original linewidth on the blueline base. map units: feet, precision: single, fuzzy: 1.0, dangle: 1.0.
These data represent as subset of the boundary and population information for 1970, as mapped by the US Dept. of Commerce, Bureau of the Census.
Using ESRI's ARC/INFO GIS software, the dataset was built for arc and polygon topology using the "build" command. The data set was then cleaned with a fuzzy tolerance of 1 foot. Topology has not been edited since the last build or clean.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- County boundaries depicted in these files may not be compatible with other county boundary files used and distributed by CGIA. Acknowledgement of products derived form this data set should cite the following: The source of the 1980 Census Boundaries/Population data is the North Carolina Corporate Geographic Database. Earlier versions of this data set may exist. The user must be sure to use the appropriate data set for the time period of interest. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, CGIA cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as a result of changes to the data caused by system transfers.
(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@cgia.state.nc.us
1980 Census Boundaries/Population
NCCGIA is charged with the development and maintenance of the State's corporate geographic database and, in cooperation with other mapping organizations, is committed to offering its users accurate, useful, and current information about the state. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop the corporate database may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. NCCGIA does not support secondary distribution of this data. The use of trade names or commercial products does not constitute their endorsement by the NCCGIA or North Carolina State Government.
FOR DIGITAL OR NON-DIGITAL DATA, Contact NC CGIA, Data Distribution to order data, Phone 919.733.2090 ... Email dataq@cgia.state.nc.us ... Web Page order form <http://www.cgia.state.nc.us/cgdb/index.html>
For current FORMAT/MEDIA INFORMATION, use a web browser: <http://www.cgia.state.nc.us/cost.html> or phone NC CGIA Data Distribution 919.733.2090
Data creation and large data analysis jobs contact Database Administration P:(919)733-2090. All data is available through standard ordering procedures on a cost recovery basis.
All formats supplied are created using ARC/INFO GIS software on Unix workstations. Other formats are available. Format compatibility is the user's responsibility. For more information on formats and media, use a web browser: MEDIA INFORMATION - <http://www.cgia.state.nc.us/cost.html>
(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@cgia.state.nc.us