In 1971 a national municipal reform occurred and Ljungby municipality's population increased to 26,000 inhabitants; but the library was just suited for a population of half that size, despite that the building had been expanded by 500 square metres (5,400 sq ft).
1971 skedde kommunindelningsreformen vilket ökade befolkningen i Ljungby kommun till 26 000 invånare; men biblioteket var endast anpassad till en befolkning av halva den storleken, trots att man byggt ut byggnaden till 500 kvadratmeter.