40 articles
Rensselaer County
Rensselaer County, New York: Capital Region county founded 1791 from Albany County, county seat Troy, area 665 sq mi, population 161,130 (2020), 19-member legislature, Tech Valley economy.
Richmond County, New York, United States
Richmond County, New York, coextensive with the Staten Island borough; one of New York's ten original counties, established November 1, 1683, named for the Duke of Richmond; 495,747 residents in 2020.
Rockland County, New York
Rockland County, New York: county founded February 23, 1798 from Orange County; county seat New City; smallest New York county outside NYC with 338,329 residents (2020), largest per-capita Jewish population, and a three-source water supply.
Sangamon County
Sangamon County, Illinois: central Illinois county established January 30, 1821 from Madison and Bond counties, county seat Springfield (state capital), named for the Sangamon River; population about 194,000.
Saratoga County
Saratoga County is a county in northeastern New York State, formed from Albany County in 1791 and named for a Mohawk word meaning "place of the swift water."
Somerset County, New Jersey
Somerset County is a county in central New Jersey established in 1688, one of America's oldest counties, with about 345,000 residents in 21 municipalities covering 305 square miles.
Summit County, Ohio, United States
Summit County, Ohio: northeastern Ohio county with county seat Akron, formed March 3, 1840 from Medina, Stark, and Portage counties and named for the Ohio and Erie Canal's Portage Summit; fourth most populous Ohio county, about 538,000 residents.
Tolland County
Tolland County, Connecticut: one of eight legacy counties of 13 towns including Tolland, Vernon, Mansfield, and Somers; established by 1785, county government abolished October 1, 1960, now a geographic subdivision.
Washington County, Pennsylvania, United States
Washington County is a county in southwestern Pennsylvania created March 28, 1781, from Westmoreland County and named for George Washington; its seat is Washington.
Westchester County, New York
Westchester County, New York: Hudson Valley county founded 1683, county seat White Plains, 48 municipalities, 2020 population 1,004,457, median household income $118,976, directly north of New York City.