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History · Thornhill

Half of Thornhill’s homes were built after 1967

Most of Thornhill was built recently: 0.0% of its homes predate 1940 and the median home dates from 1967. Below: maps from 1905 on and the census since 1980.

0on the National Register
0.0%homes built before 1940
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What stands out about Thornhill’s past

Read from the archive, the National Register and the record. The page puts what stands out first.

A history waiting to be writtenNo old photos of Thornhill are in the public archives yet. The rest are in attics and albums.
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Start Thornhill’s collection

The first neighbors to add old photos shape how Thornhill’s history is told.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
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The story so far

Thornhill, in brief

Wikipedia doesn’t have a history of Thornhill yet. The photos, dates and memories neighbors add here are how it gets written.

Thornhill is a home rule-class city in Jefferson County, Kentucky, United States. The population was 178 at the 2010 census.

Between the 2010 and 2020 censuses its population grew from 178 to 185 (+4%).

Intro from Wikipedia. Population: U.S. Census Bureau.

By decade

No old photos in the archives yet

Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.

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On the map

Thornhill on the map, 1905 to 1912

Every edition of the U.S. Geological Survey’s map of Thornhill. Tap a year, or press play to watch the town change.

Thornhill on the 1905 USGS mapThornhill on the 1912 USGS map1905Prospect sheet · 1:62,500

U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Thornhill.

People over time

Thornhill, census by census

0100200198020002020Peak: 233

Between 146 and 233 people in every census since 1980.

5 censuses, 1980–2020.

U.S. Census Bureau decennial counts, from the census table on Thornhill’s Wikipedia page.

Questions about Thornhill’s history

Memory lane

What the archives can’t tell you, neighbors can.

Town Square →
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Sources

Where this page comes from

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, U.S. Census counts (via Wikipedia) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.