Princeton is a city in Collin County, Texas, situated along U.S. Highway 380 between McKinney and Greenville, roughly 46 miles north of downtown Dallas. It has become one of the fastest-growing municipalities in the United States, a distinction that defines nearly every aspect of the community's modern identity. The city's population has multiplied dramatically, rising from about 3,500 residents in 2000 to more than 40,000 by the mid-2020s, a transformation driven by Collin County's broader suburban expansion. Princeton's origins are modest. It developed as a small railroad stop and agricultural community, with farming — including a period of local onion cultivation — forming the early economic base. For most of the 20th century it remained a quiet rural town, but its position in one of the nation's most rapidly growing counties positioned it directly in the path of suburban development moving northeast from Dallas and Plano. Today, Princeton's landscape is dominated by new master-planned communities and subdivisions that have arrived in successive waves to meet intense housing demand. The city is served by Princeton ISD, a suburban district covering about 60 square miles and extending to surrounding communities and the western shore of Lake Lavon. The lake itself, a Corps of Engineers reservoir, provides the area's primary outdoor recreation. For residents, Princeton offers new-construction housing at price points below the more established Collin County suburbs, along with a young, family-oriented population and access to the employment centers of McKinney, Frisco, Plano, and Dallas. The city is very much a community in formation, balancing explosive residential growth with the infrastructure, schools, and amenities that accompany it.