Hollister-Powell & Associates is a Technical Consulting Firm, specializing in software and database development, applications and data licensing, custom mapping, G.I.S. services, web development and related products and services. We offer: customized software and database development; community assessments, web development and web site hosting; high-quality, customized mapping products; regional data and demographics; transportation routing and analysis; and other related technical consulting.

Our clients include county and city government, school districts, school administrative offices, and other public, private and non-profit entities. Although we specialize in the Riverside County area, we provide services to other counties and states. Our data coverage includes the entire United States.