The land where Hamilton County is now located was included in the Treaty of St. Mary's and became part of the United States in 1818, the same year Indiana officially became a state. The first settler in the area was William Conner, who arrived in the summer of 1822. Hamilton County officially became a county in April 1823, named after the first Secretary of the Treasury, Alexander Hamilton.
As of 2010, Hamilton County had a population of just under 275,000 and the county has the second highest population in Central Indiana (after it's neighbor to the south, Marion County, which is home to the state capital, Indianapolis) and the fourth highest population in the state.
In 2008 Hamilton County was named America's Best Place to Raise a Family by Forbes.com. CNN Money named Carmel the best place to live, and in 2017 they gave that honor to the town of Fishers.
Hamilton County is comprised of nine townships:
Adams
Clay
Delaware
Fall Creek
Jackson
Noblesville
Westfield Washington
Wayne
White River
Towns in Hamilton County include:
Arcadia
Atlanta
Carmel
Cicero
Fishers
Noblesville
Sheridan
Westfield