In 2002, the Urban Institute established the Reentry Mapping Network (RMN), a partnership of jurisdictions throughout the country that are engaged in mapping and analyzing prisoner reentry and community data to help inform local policies and practices. This report describes the methods underlying the RMN so that other jurisdictions can learn from these experiences and replicate their efforts in the interests of crafting more effective and successful reentry strategies at the community level. These experiences learned are derived from the three RMN partners funded by the National Institute of Justice (NIJ): Washington, DC, Winston-Salem, NC, and Milwaukee, WI.