Irwin, California

Irwin is an unincorporated community in Merced County, California, United States. It is located 4.5 mi west-northwest of Delhi and about 1 mi south of Hilmar, at an elevation of 98 feet (30 m). For census purposes, Irwin is aggregated with nearby communities in the census-designated place Hilmar-Irwin, California.

A post office operated at Irwin from 1911 to 1958. The name honors W.A. Irwin, founder of the town.

In the early twentieth century, Irwin had a schoolhouse with several teachers, three churches, a hotel, and two cream shipping stations. Much of the population of the time was of Swedish descent.