The article discusses topological properties of multihop wireless networks which are deployed as part of the advanced metering infrastructure (AMI). It proposes a network topology generator based on a real map. The generator imports topologies of buildings from a specific world area indicated by geographical coordinates. The described generator is used for analysis of statistical properties of AMI networks' topologies in areas with different urbanization levels. The article presents examples of different areas along with their properties. The resulting topologies are compared to uniform random topologies.