Hennepin

Featured view

Hennepin

Total population

929

Median home value

$168,300

20.9%

Bachelor's+

Median income

$83,000

Hennepin$83k

National$74k

Founded

1837

Elevation153 m

Land area14.58 km²

Coordinates41.25°, -89.31°

Demographic figures from US Census Bureau · ACS 5-year estimates. Overview below cites Wikipedia and may reference a different year.

City facts

Facts from Wikidata (CC0).

Overview

Hennepin is a village located on the Illinois River in Putnam County, Illinois, United States. As of the 2020 census, Hennepin had a population of 769. It is the county seat and the second largest village in Putnam County.

History & geography

Excerpted from the corresponding Wikipedia article (CC BY-SA).

Demographics & economy

Source: US Census Bureau — American Community Survey, 5-year estimates.

Geography

Coordinates & boundaries from the US Census TIGER/Line shapefiles.

Health (adults)

Age-adjusted prevalence estimates from CDC PLACES (latest release).

Schools

Public K–12 schools within ~10 mi from Urban Institute Education Data Portal (NCES Common Core of Data, 2022).

Notable people from here

Red Ruffing

American baseball player and coach (1905–1986)

Charles Atwood Kofoid

American zoologist

David Denny

American businessman

E

Ed Hall

American football and baseball player and coach, college athletics administrator, lawyer, and public utilities executive (1870-1932)

Parish L. Willis

American politician (1838-1917)

Thomas Dent

American lawyer (1831-1924)

Samuel Wilson Parr

American chemist

Mildred Amanda Baker Bonham

American traveler, journalist (1840-1907)

Isabel Worrell Ball

American journalist, newspaper editor

Robert Carl Berlin

American artist

P

Paul Williams

American mountaineer

J

Jake Morgan

American pornographic actor

People born within ~10 km, from Wikidata (CC0). Click any name for their Wikipedia article.

Nearby places in Illinois

• Granville
  4.5 mi away · pop. 1,472
• De Pue
  5.5 mi away · pop. 1,532
• McNabb
  7.4 mi away · pop. 233
• Henry
  9.5 mi away · pop. 2,441
• Magnolia
  11.3 mi away · pop. 232
• Malden
  12.4 mi away · pop. 460
• LaSalle
  12.7 mi away · pop. 9,498
• Oglesby
  13 mi away
• Cherry
  13.3 mi away · pop. 534
• Lostant
  15.5 mi away
• Arlington
  15.7 mi away · pop. 157
• La Moille
  19.4 mi away

Browse all places in Illinois →

Geography & sun

Elevation, sunrise/sunset and daylight from Open-Meteo. Solar climatology from NASA POWER.

Public attention

Pageview totals from the Wikimedia Pageviews API.

Books about Hennepin

Hennepin Canal Parkway

Illinois. Dept. of Conservation · 1984

Boyle, Busch, Collins

L. F. Boyle & Son · 1945

Bridge across the Illinois River at or near Hennepin

United States. Congress. House. Committee on Interstate and Foreign Commerce · 1895

Hennepin Canal Parkway travel guide

Illinois. Dept. of Conservation · 1986

Description de la Louisiane

Louis Hennepin · 1683

Fecal-Indicator Bacteria Concentrations in the Illinois River Between Hennepin and Peoria, Illinois

U.S. Department of the Interior Staff · 2014

Establishing the Hennepin Canal National Heritage Corridor in the State of Illinois

United States. Congress. Senate. Committee on Energy and Natural Resources. · 1986

Guide to the geology of the Hennepin area, Putnam, Bureau, and Marshall counties, Illinois

Illinois State Geological Survey · 2002

Search results from Open Library.

Recently spotted species

royal catchfly

Silene regia

Seen 2026-09-14

Tennessee Warbler

Leiothlypis peregrina

Seen 2026-09-14

Buffalo Treehopper

Stictocephala bisonia

Seen 2026-09-11

great blue lobelia

Lobelia siphilitica

Seen 2026-09-11

devil's bite

Liatris scariosa

Seen 2026-09-10

Ruby-throated Hummingbird

Archilochus colubris

Seen 2026-09-08

Monarch

Danaus plexippus

Seen 2026-09-08

Hornworm Parasitoid Wasp

Cotesia congregata

Seen 2026-09-08

White-tailed Deer

Odocoileus virginianus

Seen 2026-09-08

Research-grade observations from iNaturalist (within ~15 mi).