Westfield is a town in the western part of Chautauqua County, New York, United States.

McMahan established a mill near the mouth of Chautauqua Creek, where it empties into Lake Erie.

The mill was later dismantled in advance of the War of 1812 to prevent it falling into the hands of the British.

Today some of the millstones from McMahan's mill rest outside the Patterson Library in Westfield village.

CSX operates a double-track mainline on the former New York Central "Water Level Route", and Norfolk Southern operates over former Nickel Plate Road, later Norfolk and Western, trackage.

As recently as 1967, the New York Central Railroad had a train, Empire State Express, (#51) making a stop westbound in Westfield itself, and the Fifth Avenue-Cleveland Limited (#6) and the Chicagoan (#90) stopping eastbound in Westfield.

[7] As recently as January 1968 the New York Central operated a Buffalo-Chicago daytime train, #51, the then former Empire State Express, that made a stop westbound.

[8] Amtrak's Lake Shore Limited passes twice daily on the CSX tracks but does not stop.