The "Draw Your Own Area" function has been launched on the two-year anniversary of the website - police.uk - which has received more than half a billion hits since it went live.
The website - used by more than one in ten adults in England and Wales - previously provided data from a standard one-mile radius from a given postcode. But the new developments allow visitors to plot the precise area for which they want information on crime, anti-social behaviour and outcomes
A statistical breakdown featuring pie charts and graphs to show the rise and fall of crime has been added, along with information on the local Police and Crime Commissioner.
More top news
Temperatures soared to 27.9C in Northolt shortly after midday on Thursday, making it the warmest April day for 69 years.
The South East will enjoy the best of the weather and along with Paris will be the hottest place in Europe.
The Foreign Secretary insisted police had to "come down like a ton of bricks" on gang leaders as he warned against "going soft".