The provincial government celebrated the 225th Founding Anniversary of Nueva Ecija at the Old Nueva Ecija Provincial Capitol, located on Burgos Avenue in Cabanatuan City, on 25 April 2026.

Governor Aurelio “Oyie” Matias Umali and Vice Governor Lemon Umali led the celebration along with mayors of the province, councilors, officials from the PNP and AFP, as well as employees of the provincial government and other government agencies.

Nueva Ecija celebrated its founding anniversary on 25 April, marking its establishment in 1801. It is often declared a special non-working holiday in the province. The province was named after Ecija, Spain, by Governor-General Rafael Maria de Aguilar.

Nueva Ecija is a landlocked province in Central Luzon known as the "Rice Granary of the Philippines."

It was one of the first provinces to revolt against Spanish rule in 1898 and served as a crucial military area.

Initially formed as a military commandancia, its first capital was Baler (now part of Aurora).

The provincial capital shifted over time, with Cabanatuan acting as the capital until 1965, when it was moved to Palayan City.

The province was among the first to revolt against Spain and was represented in the initial eight rays of the Philippine flag.