Where does Pride and Prejudice take place in England?

The novel is in England at the time of the Napoleonic Wars. We do not really know what the precise date is.

Most of the novel happens at Longbourne, an estate in Hertfordshire, England, where Lizzy lives with the rest of the Bennet family, and in the countryside around it, including the nearby estates of Netherfield and Lucas Lodge, and in the nearby town of Meryton.

Some of the action happens at Hunsford, Mr. Collins home in Kent, and the nearby estate of Rosings, the home of Lady Catherine. Some happens on the road between that area in Kent and Longbourne, including the home of the Gardiners, Lizzy's aunt and uncle, in the London area near Cheapside, a mercantile district.

Some very important action happens at Lambton, in Derbyshire, and on the nearby estate of Pemberley, which is owned by Darcy.