Welham Green is a safe village, and comfortably so. Its crime rate is well below the rest of the borough's. A whole year brings a few hundred recorded crimes across the village. When the police do charge someone, they do it about as often as the national average. Most of the drama in Welham Green happens over planning applications.
Hertfordshire Constabulary recorded 333 crimes in Welham Green in the year from June 2025 to May 2026, a published rate of about 62 per 1,000 residents. That is roughly 38% below the Welwyn Hatfield average.
Across Welwyn Hatfield as a whole, the published rate for the same year is about 100 crimes per 1,000 residents, against about 62 in Welham Green. The village shares a borough with Hatfield, and the two numbers belong to very different places. Buyers who only see "Welwyn Hatfield" at the top of a crime table are reading the wrong line for this village.
Welham Green is a fairly built-up village, with about 2,600 people per square kilometre on average across its neighbourhoods, unemployment of about 3% and about 4% of households overcrowded. Those three figures describe a place where most people have work and room to live, and they are given here as background, without saying they explain the crime rate.
With 333 crimes in a year, a few incidents can move any category's share by several points, so the mix below describes one year and shouldn't be read as the character of the village. Violence and sexual offences made up about 28% of crimes, against about 35% nationally, and that broad legal category covers everything from serious assault to common assault with no injury. Anti-social behaviour was also about 28%, against about 16% nationally, and criminal damage and arson about 12%, against about 7%. Other theft, at about 7%, matched the national share. Burglary was about 6% against about 4%, and vehicle crime about 5%, in line with the national figure. The higher share of anti-social behaviour and damage reflects how few serious crimes there are to make up the rest of the total. Neighbours are more likely to be complaining about a wrecked fence than reporting a mugging.
Charging is decided across the whole force, so this part answers a different question from the crime rate. Hertfordshire Constabulary charges a suspect in about 11% of cases, against about 12% nationally, which puts it 23rd of 42 forces in England and Wales. About 40% of its cases are closed with no suspect identified. A low crime rate tells you you're unlikely to need the police here. The charge rate tells you what to expect if you do, and that is a less comforting figure.
Welham Green's safety is one of its real strengths. Little gets reported here, and most of what does is nuisance, with very little that threatens people.