Most demographic and economic data is obtained from the US Census, Office of State Budget and Management, and Employment Security Commission. Land use, zoning and planning information is usually observed during field investigations and through map or aerial photography analysis, as well as gathered from local or regional planners. Other local sources for project area information may include traffic engineers, economic development staff, principals and school district personnel, chambers of commerce, and museums and historical societies. When contact persons can be determined, neighborhood associations, community groups and other interested persons are also contacted for information and opinions.

The time frames within which the Community Planners gather information and produce community impact assessments vary, depending on the unique qualities of each project and the needs of the Project Planning Engineer. In some cases background data is gather in a "community profile" completed at the beginning of the project planning process. The impact assessment process occurs between the scoping meeting and completion of the environmental documents.

Public input from scoping meetings and other public forums is considered during the assessment process. Citizens with concerns or comments about a project may contact a Community Impacts staff member.