In the 21st century, New Jersey has focused on modernizing infrastructure and revitalizing its urban centers. Key transportation projects, including the Hudson–Bergen Light Rail in Hudson County and the River Line connecting Camden and Trenton, were launched in the early 2000s to promote transit-oriented development and stimulate economic growth. The Hudson–Bergen Light Rail, in particular, has been credited with sparking a renaissance in Jersey City, attracting new residents, businesses, and investment.

Urban revitalization continues to shape North Jersey. Between 2010 and 2014, Jersey City’s population grew from 247,597 to 262,146, representing the largest municipal increase in the state during that period. The city’s tax base also expanded significantly, growing by $136 million in 2017 to become the largest municipal tax base in New Jersey. Newark, after decades of population decline, experienced its first rebound between 2000 and 2010, reaching 311,549 residents by 2020.

These developments reflect a broader trend of re-urbanization across New Jersey, with cities attracting new residents, investments, and cultural activity. Combined with continued growth in the state’s diverse economy—including pharmaceuticals, technology, finance, and logistics—New Jersey’s 21st-century trajectory underscores its role as a dynamic, globally connected state with vibrant urban hubs and expanding economic opportunity.