The Murder Map project aims to create the first ever comprehensive picture of homicide in London. On its completion, the developers say it will contain details of every murder and manslaughter committed in London from the crimes of Jack the Ripper to the present day.
At the moment the map seems to show murders in the UK capital just for 2010. You can filter the results shown on the Google Map of homicides by murder weapon.
All Murders Washington DC 2005-2009
Burgersub.org have a number of Google Maps that visualise murders in Washington DC and Baltimore. The maps include this Google Map of all Washington DC murders from 2005 and 2009.
Baltimore Sun - Baltimore Homicides
The Baltimore Sun has a Homicides Map that allows you to view all murders in Baltimore since 2007. The map allows you to refine the results by date, location, gender, race and cause of death.
New Orleans Murder Map
Shows homicides in the city in 2009.
LA Times Homicide Report
The LA Times uses Google Maps to show murders in Los Angeles. You can search the map by year, address or by name.
New York Times Homicide Map
The New York Times Homicide Map show murders in the Big Apple by year. The map includes a number of search options to refine the data by race, age, sex, murder weapon and locality.
Orlando-Area Murder Map 2010
This map from the Orlando Sentinel shows the locations of homicides committed this year.
Homicides in San Francisco 2007-2009
Google Map of San Francisco murders from the San Francisco Chronicle.
Birmingham, Alabama Murder Map
2009 murders in Birmingham visualised on Google Maps.
Drab i Danmark 2010
This map uses the SIMILE time-line with Google Maps to show murders in Denmark.