HEPGIS Applications

There are currently four applications available on the HEPGIS interactive web site.  Users may switch between applications by clicking on the appropriate tab at the top of the map.   

1. General Information - This application presents thematic maps of selected demographic characteristics from the 2000 decennial Census.  Current demographic themes include:

-          Median HH Income

-          Percent of families below poverty level

-          Percent Hispanic

-          Percent Black

-          Percent Native American

-          Percent Minority

-          Median Age of Population

-          Percent of HH owning one or more vehicles

-          Percent of workers taking public transit to work

-          Urban Clusters and Urbanized Areas

-          Urbanized Area Populations

Themes are displayed at three levels of geographic detail:

-     by state (for map scales below 1:20 million)

-          by county (for map scales between 1:20 million and 1:1million)

-          by Census Tract (for map scales above 1:1 million)

Requests for additional thematic layers should be sent to HEPGIS Support. 

2. Highway Information - This application presents thematic maps displaying characteristics for segments of the National Highway Planning Network (NHPN).  Current highway themes include:

-          The National Highway System

-          Highway Functional Classification

-          Toll Roads

-          The Strategic Highway Network (STRAHNET)

-          Average Annual Daily Traffic (AADT)

Other transportation featues that may be displayed along with the NHPN include: