The earliest known people on Ludlam Island (where Strathmere is located) were the Lenape Native Americans, who came to the island in the summertime to hunt fish and crustaceans. Along the northern 1.5 mi (2.4 km) portion of the island was a community named Corson's Inlet, after the waterway separating the island and Ocean City to the north. A part of Upper Township and Dennis Township became a part of neighboring Sea Isle City in 1905, also on Ludlam Island. That same year, Sea Isle City sold Corson's Inlet to Upper Township for $31,500 (equivalent to $1,130,000 in 2025) to pay off municipal debt. In 1912, the community of Corson's Inlet was renamed Strathmere.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From the Library of Congress (1), Wikipedia, U.S. Geological Survey historical maps and U.S. Census counts (via Wikipedia). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.