The name Nybro literally means New Bridge. It was founded as a market town in the 19th century, but rapidly transformed into an industrial town. In 1865 the town became a municipality separately from Madesjö. It was granted city rights in 1932.
Nybro is a small industrial town surrounded by forests and small agricultural enclaves. Kährs is a manufacturer of wooden floors and the largest employer in the city. But the two glassworks factories (Nybro and Pukeberg) are more known, because they also serve as tourist attraction. Nybro calls itself "The city within the Kingdom of Crystal", the latter being a region with 15 active glassworks including Kosta, Boda and Orrefors.
The city arms show a bridge in the lower part, the upper part depict crossbows. The crossbows are a symbol that is used more often in this region, but its origin is unknown. Since 1971 the coat of arms is used by the municipality.