'Mason County, MI' definitions:

Mason -- U.S. County in Michigan

From: Gazetteer 2000
Name :
Mason -- U.S. County in Michigan
Population (2000) :
28274
Housing Units (2000) :
16063
Land area (2000) :
495.167402 sq. miles (1282.477630 sq. km)
Water area (2000) :
746.697245 sq. miles (1933.936905 sq. km)
Total area (2000) :
1241.864647 sq. miles (3216.414535 sq. km)
Located within :
Michigan (MI), FIPS 26
Location :
43.984111 N, 86.305178 W