Allen marks 150 years with downtown parade, music and festivities

Thousands gathered in downtown Allen at 100 E. Main St. as the city marked 150 years with a parade, live music, historical displays, a car show, food trucks and selfie stations. The scene mixed longtime residents, city staff and visitors in the same streets, giving Allen 150 Fest the feel of a hometown celebration rather than a formal anniversary ceremony.

The city has spent all of 2026 celebrating its sesquicentennial, tying the milestone to 1876, the year Allen first appeared on the map. Officials described Allen 150 Fest as a “once-in-a-generation” celebration of the city’s past, present and future, and the day’s lineup reflected that theme with live music, food, local art, family activities and “a few surprises.” The city also promoted a live mural competition and a car rally as part of the festivities, and the Allen Public Library closed that day so the community could focus on the anniversary.

The celebration also underscored how much Allen has changed since its railroad beginnings. The town was established in 1870 by a purchasing agent for the Houston and Texas Central Railway, then named in 1872 for Ebenezer Allen, a former Texas attorney general and railroad promoter. A post office opened in 1876, the same year the city says Allen first appeared on the map. That history still shows up in places such as the Allen Train Depot, which preserves the city’s railroad heritage and is home to the restored 1910 Ebenezer Allen #20 steam locomotive near Allen Heritage Village.

City leaders put the anniversary in motion months earlier, when Mayor Brooks presented a proclamation on Feb. 10 to the Allen Heritage Guild, the Allen 150th Steering Committee and special guest Ebenezer Allen. The downtown turnout for Allen 150 Fest showed how the city is choosing to tell its own story now: by linking a fast-growing Collin County suburb to the railroad roots that started it all, while still making room for families, music and a crowd large enough to fill the streets.