Founding year: Wikidata. First post office: 1799.The full story ↓
History grade
What drives Georgetown’s History grade
On its age, its old homes and the National Register, Georgetown is more historic than 77% of U.S. towns, #13 of 37 in Delaware. All 3 inputs are above most U.S. towns; its age ranks highest and its share of homes from before 1940 lowest.
A−
HistoryA character grade: shown, never part of Georgetown’s overall grade.
Delaware towns list more on the Register than most of the country (a typical Delaware town has 29.4 per 10,000 residents, the U.S. 2.4), so Georgetown’s 32.6 sits near the middle of its state (58% of Delaware towns have fewer) while its 25 historic buildings outnumber those of 81% of U.S. towns.
NoteThe founding year comes from Wikidata alone; no second source gives 1791.
How sure. Graded on any two of the three inputs instead, the letter would range from B+ to A−. The pre-1940 share is a Census survey estimate (±11.1 points).
Founding year: Wikidata (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about Georgetown’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.
Every building
Georgetown, building by building, 1885–1919
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
Lewes, sited on the Delaware Bay, was designated as the first county seat. It was the first colony in Delaware, founded by the Dutch in 1631, and it remained the only significant European settlement in the region for some time. When English colonist William Penn organized the three southern counties of Pennsylvania, which are now Delaware, Lewes was the natural choice for the location of the Sussex County's Seat of Justice.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
In 1791, according to Wikidata. Georgetown’s post office opened in 1799, and the census of 1850 counted 777 people here.
How does Georgetown rank for history?
Georgetown is more historic than 77% of U.S. towns, #13 of 37 in Delaware. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
What is on the National Register in Georgetown?
18 listings: 18 buildings, among them the Old Sussex County Courthouse (listed 1971, the first). 25 historic buildings in all.
How old are the homes in Georgetown?
12% of Georgetown’s homes were built before 1940 (Census estimate, ±11.1 points), against a typical 5.9% for a Delaware town; the median home was built in 1986.
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).
From Wikimedia Commons (27), the Library of Congress (3), the National Register of Historic Places (18), Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.