Ocosta is an unincorporated community and Census-designated place in Grays Harbor County, in the U.S. state of Washington.
[1] The town, originally called Ocosta-by-the-sea, was the product of a disagreement between Aberdeen, WA and the Northern Pacific Railroad.
In those days, it was common for the NP to accept a cash incentive from a town that wished to connect to the system.
The town was reached in 1892; however, Ocosta's harbor was found to be unsuitable, and the NP instead struck a deal with Aberdeen to build a spur into the city.
When the 1893 financial panic occurred, the Northern Pacific ultimately halted progress, and the city of Aberdeen finished the spur, using rails from a sunken barque.