These data were reformatted by the SSDC staff into Portable Document Format, Excel, and Dbase IV files. The database files have regional and subregional names and codes and the data can be linked with GIS shape files to create GIS themes for all of the subregional areas. The PDF format was developed by Adobe Systems Incorporated and can be accessed using the Adobe Acrobat Reader. This data collection has five geographical areas. The geographical descriptions can be confusing.
Unknown data are births or deaths recorded without or an incorrect zip code.
And in the case of deaths, without an age. Unknown data cannot be associated with records containing geographical units or age groups so these data appear in an Unknown record. If Unknown data are not available, the County total cannot be calculated accurately. County tables are available in the Region data section . As noted above you can sum all Region data and calculate County totals if you include Unknown data.