In 1914 a bridge over the Snake River was completed downstream from Lyon's Ferry, which greatly diminished the railroad traffic through the town. The economy of the town turned to agriculture, but in 1929 the bank failed. The town's population dwindled steadily until the mid twentieth century. The High School shut down in 1956, and students had to bus to Dayton. In 1961, the rairoad station was shut down as well.
In 1968, the Snake River Bridge (originally built over the Columbia at Vantage in 1927, then disassembled in 1963) was re-assembled in the area, providing additional access over the Snake River. In 1970, the Little Goose Dam was completed about nine miles northeast of Starbuck.
Today Starbuck is a quiet, agricultural town with a population of about 130.
1910....761
1920....524
1930....346
1940....251
1950....194
1960....161
1970....216
1980....198
1990....170
2000....130
2008....130 (Washington Office of Financial Management Estimate)
According to the United States Census Bureau, the town has a total area of 0.2 square miles (0.5 km²), all of it land.
There were 65 households out of which 13.8% had children under the age of 18 living with them, 47.7% were married couples living together, 10.8% had a female householder with no husband present, and 38.5% were non-families. 35.4% of all households were made up of individuals and 13.8% had someone living alone who was 65 years of age or older. The average household size was 2.00 and the average family size was 2.45.
In the town the population was spread out with 14.6% under the age of 18, 6.2% from 18 to 24, 23.8% from 25 to 44, 26.9% from 45 to 64, and 28.5% who were 65 years of age or older. The median age was 50 years. For every 100 females there were 106.3 males. For every 100 females age 18 and over, there were 109.4 males.
The median income for a household in the town was $18,125, and the median income for a family was $21,875. Males had a median income of $34,063 versus $13,750 for females. The per capita income for the town was $14,770. There were 15.2% of families and 24.3% of the population living below the poverty line, including 100.0% of under eighteens and 23.7% of those over 64.