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Jacksonville is a hamlet (and census-designated place) in Tompkins County, New York, United States. As of the 2020 census, Jacksonville had a population of 516. The community is located within the Town of Ulysses, along New York State Route 96. It is 3.5 miles (5.6 km) southeast of Trumansburg. Jacksonville has a post office with ZIP code 14854, which opened on February 25, 1820.
Its first post office opened in 1820.
Intro from Wikipedia. Population: U.S. Census Bureau.
From the old history books
What they wrote about Jacksonville in 1894
Passages that mention Jacksonville, cut from the printed page as they were published.
Landmarks of Tompkins county, New York1894 · page 244Read the page →
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Jacksonville. — This hamlet was early known as "Harlow's Corners," and is situated on the Ithaca and Geneva turnpike, about seven miles from Ithaca and near the center of the town of Ulysses. The name of the place was changed 'after the battle of New Orleans, in 1815, in honor of " Old Hickory." The first post-office here was established in 1832. The present postmaster is E. C. Almy, who also has a store.
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Landmarks of Tompkins county, New York1894 · page 215Read the page →
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Previous to 1803 there was a block school house at Jacksonville, and Elisha Nye, of Aurora, was teacher. The following is of interest in this connection : This is to certify that there is due to the town of Ulysses the sum of five pounds eight shillings and fourpence three farthings out of the money granted to the county of Onondaga by the Supervisors of the State of New York, for the use of schools for the year 1795, as witness our hands and seals this 31st of May, 1796.
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Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.
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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 U.S. Geological Survey historical maps and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.