Yes, Harpenden is a safe place to live, and comfortably so. Crime runs well below the rest of the St Albans district. Violence makes up a smaller share of it than it does nationally. Car crime makes up a bigger one. The main local threat is to whatever is parked outside.
Police.uk records put Harpenden's crime rate at about 50 crimes per 1,000 residents in the year to May 2026, from 1,918 recorded crimes in total. That is roughly 38% below the average for the St Albans district over the same period.
Across the whole St Albans district, the published rate is about 81 crimes per 1,000 residents, against Harpenden's 50. The district includes the city of St Albans itself, and Harpenden sits well clear of the district figure.
Harpenden is a fairly built-up town, at about 3,870 residents per square kilometre on average. Unemployment is about 2% and about 2% of households are overcrowded. It is a town where most people have a job, a spare room and a gate that latches, and the crime figures look like that town.
The crime mix tilts away from people and towards property. Violence and sexual offences make up about 23% of Harpenden's crime, against about 35% across England and Wales, and that category covers everything from serious assault down to common assault with no injury. Anti-social behaviour accounts for about 21%, against about 16% nationally. Vehicle crime is about 11% of the total, against about 5% nationally, which is the one category where Harpenden stands out. Shoplifting runs at about 9% against 8%, other theft about 9% against 7%, and criminal damage and arson about 9% against 7%, all close to the national shares. Police.uk publishes the street-level map for any postcode, and a look at the roads around a particular house will show whether its cars live on a drive or on the street. Harpenden's worst recorded crime wave came by train for the race meetings on the Common, when a county historian wrote in 1879 that London's pickpockets took over the town for two days a year. Today's thieves come for the cars.
Hertfordshire Constabulary charges a suspect in about 11% of cases, against about 12% nationally, over the year to May 2026, and ranks 23rd of 42 forces on that measure. About 40% of cases across the force are closed with no suspect identified. Those are force-wide figures covering the whole county, and they measure what happens after a crime is reported, which is a separate question from how often crime happens in Harpenden.
Harpenden is a very safe town. The thing most worth protecting here is the car on the drive.