U.S. National Atlas Cities represents cities and towns in the United States.
U.S. National Atlas Cities provides information about the locations, names, and populations of cities and towns for conducting geographic analysis on national and large regional scales.
Largest scale when displaying the data: 1:2,000,000.
ground condition
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380 New York Street
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The shapefile is converted to SDC (Smart Data Compression) format using either ESRI SDC Data Development Kit Professional 2 (DDKP2) or tools in ArcGIS. The SDC data set is then loaded into ArcSDE® to verify and validate the geometry.
After processing, the data set is checked for drawing display and number of records and file sizes compared with source materials.
The geospatial part of this data set was originally extracted from the USGS 1:2,000,000-scale Digital Line Graphs (DLG) - Manmade Features. The horizontal positional accuracy is about 2 kilometers.
Attribute and geospatial data
Updates 1990 and 1998 population figures for Newtown, Connecticut were updated. County and county FIPS fields for the town of Bloomfield, CO were updated and it was listed as the county seat for Bloomfield County. County seats were added for counties where they were missing. Please note that Shannon County, SD; Todd County, SD; Kings, NY; Bronx, NY; Queens, NY; and Richmond, NY do not have official county seats. Incorporated place names were compared with those from the 2004 GNIS database. GNIS names were used where there were discrepancies. New incorporated places were added; duplicate points and places no longer incorporated were removed. Positions of all incorporated places were adjusted to match GNIS coordinates. Minor positional corrections of incorporated places were made using 1999 Hydrography Features of the United States and 1999 County Boundaries of the United States as references. The population range values were adjusted to reflect 2000 population figures and the POP_2000 attribute was added; earlier population figures were dropped.
The following steps were performed by ESRI: Downloaded the compressed file from the National Atlas of the United States® and extracted it. Removed unneeded attributes. Added the STATUS attribute and populated it with the text removed from the FEATURE attribute for all records where FEATURE was not "Populated Place". For the records where FEATURE was "Populated Place", attribute STATUS remains blank. Removed attribute FEATURE. Renamed attributes FIPS55 to PLACE_FIPS, STATE to ST_ABBREV, and POP_RANGE to FEATURE. Renamed values of the new FEATURE attribute from "Undetermined" or "0 - 9,999" to "less than 10,000". Created ArcGIS® layer file (.lyr), projection file (.prj), and spatial indices.
The following steps were performed by ESRI: For records where POP_2000 has values of -99999 changed the values of FEATURE from "less than 10,000" to "no data".
Internal feature number.
ESRI
Feature geometry.
ESRI
The categorized population of the city or town.
National Atlas of the United States and the United States Geological Survey
The population of the city or town is less than 10,000.
National Atlas of the United States and the United States Geological Survey
The population of the city or town is at least 10,000 but not greater than 49,999.
National Atlas of the United States and the United States Geological Survey
The population of the city or town is at least 50,000 but not greater than 99,999.
National Atlas of the United States and the United States Geological Survey
The population of the city or town is at least 100,000 but not greater than 249,999.
National Atlas of the United States and the United States Geological Survey
The population of the city or town is at least 250,000 but not greater than 499,999.
National Atlas of the United States and the United States Geological Survey
The population of the city or town is at least 500,000 but not greater than 999,999.
National Atlas of the United States and the United States Geological Survey
The population of the city or town is at least 1,000,000 but not greater than 9,999,999.
National Atlas of the United States and the United States Geological Survey
The name of the city or town.
National Atlas of the United States and the United States Geological Survey
The two-letter abbreviation for the state.
Department of Commerce, National Institute of Standards and Technology
The combined state and county FIPS code (five-digit number). The combined code uniquely identifies the county in which the city or town is located.
Department of Commerce, National Institute of Standards and Technology
The FIPS code (five-digit number) for named populated places (city or town).
Department of Commerce, National Institute of Standards and Technology
The 2000 population of the city or town.
National Atlas of the United States and the United States Geological Survey
The population is unknown.
ESRI
The status of the city or town.
ESRI
City is the national capital.
City is a state capital.
City is a state capital and county seat.
City is a county seat.
380 New York Street
In the United States, contact the ESRI Telebusiness staff at 800-447-9778 for more information about our software and data. Outside the United States, please direct all inquiries to your local ESRI International Distributor. This information can be found at http://gis.esri.com/intldist/contactint.cfm.
See use constraints.
The SDC file contains the geospatial and attribute data. The SDI file contains the spatial index. The PRJ file contains the coordinate system information (optional). The XML file (*.sdc.xml) contains the metadata describing the data set (optional).
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380 New York Street