Union Star Map
Union Star is a city in DeKalb County, Missouri, United States, along the Third Fork of the Platte River. The population was 433 at the 2000 census, at which time it was a town. It is part of the St. Joseph, MO–KS Metropolitan Statistical Area.
Union Star is located at 39°58?49?N 94°35?58?W / 39.980280°N 94.599415°W / 39.980280; -94.599415 in the Polk township of DeKalb County, Missouri on the border with Andrew County, Missouri. Union Star is 20 miles away from Saint Joseph, Missouri and Exit 50 on the Missouri portion of Interstate 29 on U.S. Highway 169.
According to the United States Census Bureau, the town has a total area of 0.3 square miles (0.7 km²), all of it land.
Nearby cities include Rea, Clarksdale, Savannah, Maysville, Guilford.