A privately owned slaughterhouse and meetpacking facility, Hillerød Svineslagteri, opened in 1896.Foss A/S, a major provider of hightech analytical solutions for the global food industry, is based in Hillerød.
Among them are the Business Academy North Zealand, Hillerød Technical School, Hillerød Business School, Hillerød Tekniske Gymnasium, Frederiksborg Gymnasium og HF, VUC and Hillerød teacher training college.
The settlement of Nødebo on the southeastern banks of Esrum Sø and enclosed by Gribskov, is home to the forestry boarding school of 'Skovskolen' (English: 'The Forest School) administered by the University of Copenhagen.
"The Boiler Room" ("Kedelhuset") has changing special exhibits.
In 2005, the subject was the ancient and medieval history of Northern Zealand.
It was never officially incorporated as a market town but prospered from ample privileges afforded by successive monarchs, although it experienced a set back when Frederick IV moved court to Fredensborg Palace in the 1720s.