In the 1990s, a number of local institutions built self-sustaining information systems with integrated and recurrently updated data on neighborhood conditions in their cities. With the theme of democratizing information, they facilitate the direct practical use of the data by city and community leaders and use information to strengthen groups in distressed urban neighborhoods. Twelve of them have joined with the Urban Institute to form the National Neighborhood Indicators Partnership (NNIP) to spread relevant knowledge and capabilities in this field. This monograph tells the stories of the founding partners in NNIP philosophy, system building methods, application, costsas a guide to institutions seeking to develop similar capacities in other cities.