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Koontz Lake 3926Photo: Chris Light · CC BY-SA 4.0
CHistory
History · Koontz Lake

12% of Koontz Lake’s homes were built before 1940

More historic than 31% of U.S. towns. What drives it

Below: maps from 1958 on and the census since 1980.

0on the National Register
12%homes built before 1940
Photo: Chris Light · CC BY-SA 4.0
Quick answers

About Koontz Lake’s history

How historic is Koontz Lake?

C

More historic than 31% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
History grade

What drives Koontz Lake’s History grade

On its age, its old homes and the National Register, Koontz Lake is more historic than 31% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.

C
HistoryA character grade: shown, never part of Koontz Lake’s overall grade.
All U.S. towns we grade (21,289)Ahead of 31%
NewerOlder

Indiana towns list more on the Register than most of the country (a typical Indiana town has 7.9 per 10,000 residents, the U.S. 2.4), so Koontz Lake’s 0.0 sits below most of its state (22% of Indiana towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.

How sure. Graded on two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share is a Census survey estimate (±6.5 points).

Founding year: our sources. 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 Koontz Lake’s past

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

★ What stands out · Help out

Start Koontz Lake’s collection

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

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

How Koontz Lake came to be

From Wikipedia’s history of Koontz Lake.

Read it all →

Koontz Lake was named for the lake which the community surrounds, which in turn was named after local mill owner Samuel Koontz. The community was devastated by tornadoes as part of the Palm Sunday Tornado Outbreak of 1965.

Text from Wikipedia, licensed CC BY-SA 4.0.

By decade

Koontz Lake, decade by decade

On the map

Koontz Lake on the map, 1958 to 1984

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

Koontz Lake on the 1958 USGS mapKoontz Lake on the 1972 USGS mapKoontz Lake on the 1984 USGS map1958Walkerton sheet · 1:24,000

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

People over time

Koontz Lake, census by census

02004006008001,0001,2001,4001,6001,800198020002020Peak: 1,667

Between 1,436 and 1,667 people in every census since 1980.

5 censuses, 1980–2020.

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

Famous people

Famous people close to Koontz Lake

Nobody well known was born in Koontz Lake itself, so here are the best known from just nearby.

See all →
Stories next door

History across the town line

Each neighbor’s History grade, on the same three inputs.

Questions about Koontz Lake’s history

How does Koontz Lake rank for history?

Koontz Lake is more historic than 31% of U.S. towns. 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.

How old are the homes in Koontz Lake?

12% of Koontz Lake’s homes were built before 1940 (Census estimate, ±6.5 points), against a typical 14% for an Indiana town; the median home was built in 1966.

Memory lane

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

Town Square →
Start a conversation
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).

From Wikimedia Commons (8), 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.