Oskaloosa, Illinois

Oskaloosa: township in Clay County, Illinois

About

Oskaloosa is a township located in the county of Clay in the U.S. state of Illinois. Its population at the 2010 census was 322 and a population density of 9 people per km². After 10 years in 2020 city had an estimated population of 308 inhabitants.

Oskaloosa locator map
Location of Oskaloosa on Illinois map.

Quick Facts about Oskaloosa

Population 308 (2020)
Country United States of America
State Illinois (United States)
County Clay County
Area 37.39 km2
Latitude & Longitude 38.7598,-88.6489
Altitude 531 feet / 162 meters
Time Zone America/Chicago
Local time 22:39:52 (18th April 2026)
Density 8 Pop. per km² as of 2020
Population growth -4.55% (2010-2020)
Weather 66℉ Showers And Thunderstorms Likely 7-days weather
Map highlighting Oskaloosa Township  Clay County  Illinois locator map image
Map highlighting Oskaloosa Township Clay County Illinois locator map image

Geography

Oskaloosa is located at 38°45'35"N 88°38'56"W (38.7597700, -88.6489400).

Oskaloosa map

Click "full screen" full screen map icon to open full mode. View satellite images

Weather

66°F
Showers And Thunderstorms Likely
16 mph W Saturday

Showers and thunderstorms likely. Partly sunny, with a high near 66. West wind around 16 mph, with gusts as high as 23 mph. Chance of precipitation is...

7-Day Forecast

Demographics

According to census records, the population of Oskaloosa decreased by 4.55% in 10 years.

Year Population % Change Method
2010 322 - census
2011 320 -0.63% estimation process
2012 321 0.31% estimation process
2013 315 -1.9% estimation process
2014 315 0% estimation process
2015 313 -0.64% estimation process
2016 311 -0.64% estimation process
2017 309 -0.65% estimation process
2018 311 0.64% estimation process
2019 309 -0.65% estimation process
2020 308 -0.32% estimation process
OXskaloosa, Ouscauloosa, uscaloosa

Nearby Schools and Colleges

Schools and campuses linked to Oskaloosa, IL. Select a name to open its map and contact details.

Code Name City ZIP
145707 Olney Central College Olney (IL) 62450

Nearby Transit Stations (6)

Rail and bus stations connected to Oskaloosa, IL. Select a station to open its map and address details.

Code Name Address Type
EFG Effingham 401 West National Ave. RAIL
CEN Centralia station 108 East Broadway RAIL
MVI Mt. Vernon, IL 102 Potomac Boulevard BUS
MAT Mattoon station 1718 Broadway Ave. RAIL
DQN Du Quoin 20 North Chestnut St. RAIL

Closest post offices linked to Oskaloosa.

Post Office Name City ZIP
Louisvill Post Office Louisville (IL) 62858

Other places with the same name (2)

  • Oskaloosa, Iowa city in and the county seat of Mahaska County, Iowa, United States with a population of 11,803 people.
  • Oskaloosa, Kansas township in Jefferson County, Kansas with a population of 1,076 people.

Other cities in Clay County

Cities, towns, neighborhoods & other populated places in Clay County , IL.

City Name Population Title
Flora 4,831 City in Illinois
Louisville 1,087 Village in Illinois
Clay City 898 Township in Clay County, Illinois
Xenia 371 Village in Clay County, Illinois
Bible Grove 320 Township in Clay County, Illinois
Hoosier 313 Township in Clay County, Illinois
Iola 134 Village in Illinois, USA
Sailor Springs 91 Human settlement in Illinois, United States of America