Townapedia
Koontz Lake panorama
Koontz Lake panorama · Chris Light, CC BY-SA 4.0
Polk Township Polk Township District No. 2 School entrance
Polk Township Polk Township District No. 2 School entrance · V locity, CC BY-SA 3.0
Overlook 9333
Overlook 9333 · Chris Light, CC BY-SA 4.0
USGS 9334
USGS 9334 · Chris Light, CC BY-SA 4.0
Dam site 9339
Dam site 9339 · Chris Light, CC BY-SA 4.0
Dam site 9340
Dam site 9340 · Chris Light, CC BY-SA 4.0

Koontz Lake, Indiana

Koontz Lake is a community of 1,182 people in Marshall County, Indiana.

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Population1,182 -18.2% since 2019
Elevation735 ft 224 m
Land area3.5 sq mi
ZIP code46574
Nearest airportPlymouth Municipal Airport (PLY) 9 mi

Why visit Koontz Lake

Townapedia lists 1 museum or landmark in and around town.

Highlights include Polk Township District No. 2 School.

July is the warmest month, with average highs of 84°F; January lows average 17°F, and about 55 inches of snow fall in a normal year.

About Koontz Lake

Koontz Lake is an unincorporated community and census-designated place in Starke and Marshall counties in Indiana. The population was 1,667 at the 2020 census.

From the Wikipedia article Koontz Lake, Indiana (this version), under CC BY-SA 4.0.

Museums and landmarks1

Polk Township District No. 2 School

Monument and historic site · National Register of Historic Places · 3.5 mi

Open in Google Maps · Wikipedia

Schools, colleges and libraries5

Harold C Urey Middle School

School · 3.9 mi

407 Washington St, Walkerton

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John Glenn High School

School · 3.2 mi

201 John Glenn Dr, Walkerton

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Oregon-Davis Elementary School

School · 4.3 mi

5860 N 750 E, Hamlet

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Oregon-Davis Jr-Sr High School

School · 4.2 mi

5990 N 750 E, Hamlet

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Walkerton Elementary School

School · 3.5 mi

805 Washington St, Walkerton

Open in Google Maps

History

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.

From the History section of Koontz Lake, Indiana on Wikipedia, under CC BY-SA 4.0.

Map of Koontz Lake

6 places. The map loads OpenStreetMap tiles when you open it.

Climate by month

20°40°60°80°January: 2.6 in of rainFebruary: 2.3 in of rainMarch: 2.5 in of rainApril: 3.6 in of rainMay: 4.3 in of rainJune: 4.2 in of rainJuly: 4.4 in of rainAugust: 4.0 in of rainSeptember: 3.2 in of rainOctober: 3.4 in of rainNovember: 3.0 in of rainDecember: 2.6 in of rainJanuary: 31°FFebruary: 35°FMarch: 47°FApril: 60°FMay: 71°FJune: 81°FJuly: 84°FAugust: 82°FSeptember: 76°FOctober: 63°FNovember: 48°FDecember: 37°FJanuary: 17°FFebruary: 18°FMarch: 28°FApril: 38°FMay: 49°FJune: 59°FJuly: 63°FAugust: 61°FSeptember: 54°FOctober: 42°FNovember: 32°FDecember: 23°FJFMAMJJASOND
Average high Average low Rain
Monthly table
MonthHighLowRainSnow
Jan31°F17°F2.6 in18.6 in
Feb35°F18°F2.3 in14.1 in
Mar47°F28°F2.5 in6.4 in
Apr60°F38°F3.6 in1.1 in
May71°F49°F4.3 in0.0 in
Jun81°F59°F4.2 in0.0 in
Jul84°F63°F4.4 in0.0 in
Aug82°F61°F4.0 in0.0 in
Sep76°F54°F3.2 in0.0 in
Oct63°F42°F3.4 in0.1 in
Nov48°F32°F3.0 in3.3 in
Dec37°F23°F2.6 in11.3 in

U.S. Climate Normals 1991-2020 for Plymouth (9 mi away), NOAA NCEI.

People and cost of living

$80,538median household income
$143,200median home value
$663median monthly rent
55.0median age
19.2%of adults have a bachelor's degree or higher
88.4%of homes are owner-occupied
54.6 minaverage commute
Age of residents
Under 1815%18 to 344%35 to 6459%65 and over22%

American Community Survey 5-year estimates, 2020-2024, U.S. Census Bureau. Estimates have margins of error, larger for small towns.

Disaster history

Marshall County has had 12 federal disaster declarations since 2000, most often for floods.

  • 2026-08-15: Severe Storms, Straight-Line Winds, Tornadoes, And Flooding (Flood)
  • 2026-01-24: Severe Winter Storm (Winter Storm)
  • 2025-07-22: Severe Storms, Straight-Line Winds, Tornadoes, And Flooding (Flood)
  • 2020-04-03: Covid-19 Pandemic (Biological)
  • 2020-03-13: Covid-19 (Biological)
  • 2018-05-04: Severe Storms And Flooding (Flood)

OpenFEMA disaster declarations summaries.

Getting there and nearby towns

Plymouth Municipal Airport (PLY) is the nearest airport with scheduled flights listed in OpenStreetMap, 9 miles away.

Drive times are estimates from straight-line distance, not routes.

Reviews, tips and questions

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Sources and licences

Photo credits

Page built October 30, 2026. Spotted a mistake? Tell us or suggest a place.