Settled around 1880, the community began to grown with the extension of the Gulf, Colorado and Santa Fe Railway through the area. It was named for the Michigan hometown of the railroad's contractor. In 1896 the community had a school with twenty-one students and one teacher. Ten years later the Haslet school had twenty-five students. Haslet's population was sixty-seven in 1903 and fifty in 1915. During the 1920s Haslet had three grocery stores as well as a hardware store, dry goods store, and cotton gin. It reported a population of sixty-nine in the mid-1930s.
The availability of war-related employment in Fort Worth probably contributed to the growth of Haslet's population to 175 by the late 1940s. It maintained this population through the 1950s, and in the mid-1960s, by which point it had incorporated, Haslet had a population of 250 and seven businesses. In 1976 it had 276 residents and five businesses.
According to the 2000 census, Haslet's median household income was $76,222 and its median home value was $162,900. Residents are served by the Northwest Independent School District. Homes range from less than $150,000 to $800,000, and include spacious custom homes for upper 300s and up, as well as undeveloped pasture land.