Greencastle was established in 1821 as the Putnam County seat, strategically chosen for its central location and access to water sources, fostering early settlement and development.

The city's name, "Greencastle," is attributed to the original settlers' recollections of their ancestral home, Greenfield, combined with the desire to differentiate their new settlement.

Greencastle is situated in the rolling hills of West Central Indiana, characterized by fertile farmland and stands as a vital agricultural hub within the state.

DePauw University, founded in 1837, has consistently shaped Greencastle's intellectual and cultural landscape, attracting students and faculty from diverse backgrounds.

The population of Greencastle has experienced moderate growth over the past two centuries, with DePauw University's presence contributing significantly to its stability.

Agriculture has historically been a dominant force in Greencastle's economy, with corn, soybeans, and livestock playing prominent roles in the region's prosperity.

Manufacturing, particularly the production of automotive components and industrial machinery, contributes considerably to Greencastle's economic diversification.

The Putnam County Courthouse, a prominent landmark in downtown Greencastle, represents a significant example of Beaux-Arts architecture and serves as a historical focal point.

The city hosts the Putnam County Fair annually, celebrating the area's agricultural heritage with livestock exhibits, competitions, and community events.

Greencastle maintains a small-town atmosphere with a strong sense of community, fostered through local events, organizations, and civic engagement.

While not a UNESCO heritage site, Greencastle's historic downtown district features several buildings listed on the National Register of Historic Places, highlighting its architectural significance.

The city has notable connections to prominent individuals, including authors, politicians, and business leaders who have either resided in or attended DePauw University.

Greencastle's location along major transportation routes, including US Highway 40 and Interstate 70, has facilitated trade and connectivity with other regions.

The local arts community thrives in Greencastle through galleries, theaters, and music venues, offering a variety of cultural experiences to residents and visitors.

Greencastle's commitment to preserving its history is evident in the efforts to maintain its historic buildings and promote local heritage tourism.