Roselle is a borough in Union County, New Jersey, occupying a compact, densely developed footprint about 20 miles southwest of Manhattan and immediately west of the city of Elizabeth. The borough's development was shaped by the railroads and industry of the late nineteenth century, which turned a rural crossroads into a working-class residential community. Roselle holds a distinctive place in American history: in 1883, its downtown became the first area lit by Thomas Edison's electric lighting system, an event that still defines the town's sense of identity and its claim to fame. With a 2020 census population of 22,695, Roselle is one of Union County's mid-sized boroughs, characterized by older, close-built housing stock, a diverse population, and a traditionally blue-collar economic profile. The borough's streets are largely lined with pre-1960 single-family homes, two-family houses, and small apartment buildings, giving it the dense, walkable feel of an established New Jersey suburb rather than a newer bedroom community. Its central location places Newark, Elizabeth, and the region's employment centers within easy reach. The borough functions as both a self-contained community and a commuter base for the wider metropolitan area. Its downtown corridors host local shops, restaurants, and civic institutions, while the 205-acre Warinanco Park provides substantial green space that is unusual for such a dense municipality. Community life centers on the schools, local churches, and the park's year-round programming. Roselle appeals to residents seeking an affordable, well-connected foothold in northern New Jersey's urban core. Commuters benefit from NJ Transit bus service and the Raritan Valley Line at nearby Roselle Park station, and Newark Liberty International Airport lies just minutes away. The combination of historic character, housing affordability, park access, and transit convenience makes Roselle a practical, community-centered choice within Union County.