1925Government
It was incorporated as a village in 1925 and as a city in 1951.
1978History
Thorp House, was listed on the National Register of Historic Places in 1978.
1991History
Since the dissolution of the USSR in 1991, they have been joined by a significant number of immigrants from Russia and other former Soviet republics.
2000History
=== 2000 census ===
As of the census of 2000, there were 19,386 people, 9,848 households, and 5,042 families living in the city.
2010History
=== 2010 census ===
As of the census of 2010, there were 19,155 people, 9,662 households, and 4,884 families living in the city.