Foster is a town in Providence County, Rhode Island, United States.

In the year 1662, William Vaughan, Zachariah Rhodes, and Robert Wescott, purchased from the Indians a large tract of land called West Quanaug, bordering on Providence.

Shortly before the incorporation of the town, Foster's first church, a Calvinist Baptist congregation was founded.

The largest Klan rally north of the Mason–Dixon line was held in Foster on the Old Home Day grounds in 1924 with 8,000 in attendance and U.S.

Foster remained a bastion of racial and religious bigotry for more than half a century.

Foster contains Rhode Island's highest point, Jerimoth Hill, with an elevation of 248 m (814 ft).

The climate in this area experiences mild differences between highs and lows, and there is adequate rainfall year-round.

This is because the zip code extends into parts of the more populated town of Scituate, Rhode Island.

Isaac Paine Elementary School has the top spot for reading proficiency according to the New England Common Assessment Program, or NECAP, exams.

[13] Jerimoth Hill, the highest point of elevation in Rhode Island, is located in Foster.