What is the population of Riley?

The population of Riley, IL is 2,823.

Where is Riley located?

Riley, IL is located at latitude 42.1914100 and longitude -88.6325900. It is in United States.

What is the elevation of Riley?

Riley, IL has an elevation of 246 meters (807 feet) above sea level.

What time zone is Riley in?

Riley, IL is in the America/Chicago time zone.

What state is Riley in?

Riley is in the state of Illinois, United States.

What county is Riley, IL in?

Riley is in McHenry County, Illinois.

How has the population of Riley changed?

The population of Riley, IL has decreased from 2,922 (2010) to 2,823 (2020), a change of -3.4%.

Riley, IL - Geographic Facts & Maps

Riley: human settlement in Illinois, United States of America.

About

Riley is a city located in the county of McHenry in the U.S. state of Illinois. Its population at the 2010 census was 2,922. After 10 years in 2020 city had an estimated population of 2,823 inhabitants.

Quick Facts about Riley

Population	2,823 (2020)
Country	United States of America
State	Illinois (United States)
County	McHenry County
Latitude & Longitude	42.1914,-88.6326
Altitude	2,648 feet / 807 meters
Time Zone	America/Chicago
Local time	00:36:50 (16th October 2026)
Population growth	-3.39% (2010-2020)
Weather	46℉ Rain Showers Likely then Cloudy 7-days weather

Geography

Riley is located at 42°11'29"N 88°37'57"W (42.1914100, -88.6325900).

Riley map

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Weather

46°F

Rain Showers Likely then Cloudy

5 to 20 mph WSW Tonight

Rain showers likely before 11pm. Cloudy. Low around 46, with temperatures rising to around 48 overnight. West southwest wind 5 to 20 mph, with gusts a...

7-Day Forecast

Demographics

According to census records, the population of Riley decreased by 3.39% in 10 years.

Year	Population	% Change	Method
2010	2,922	-	census
2011	2,922	0%	estimation process
2012	2,912	-0.34%	estimation process
2013	2,893	-0.65%	estimation process
2014	2,884	-0.31%	estimation process
2015	2,876	-0.28%	estimation process
2016	2,862	-0.49%	estimation process
2017	2,861	-0.03%	estimation process
2018	2,859	-0.07%	estimation process
2019	2,847	-0.42%	estimation process
2020	2,823	-0.84%	estimation process

Nearby Schools and Colleges

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

Code	Name	City	ZIP
147004	McHenry County College	Crystal Lake (IL)	60012-2761

Nearby Transit Stations (19)

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

Code	Name	Address	Type
RCK	Rockford, Illinois	7559 Walton St.	BUS
BET	South Beloit, Illinois	15766 Manchester Road	BUS
PLO	Plano	101 West Main Street	RAIL
NPV	Naperville	105 E. Fourth Ave.	RAIL
JVL	Janesville, Wisconsin	3120 North Pontiac Drive	BUS

Nearby Post Offices

Closest post offices linked to Riley.

Post Office Name	City	ZIP
Mareng Post Office	Marengo (IL)	60152

Other cities in McHenry County

Cities, towns, neighborhoods & other populated places in McHenry County , IL. (more)

City Name	Population	Title
Crystal Lake	39,642	City located in McHenry County, Illinois, USA
Algonquin	30,730	Village in Illinois
Lake in the Hills	28,345	Village in Illinois
Huntley	27,256	Village in McHenry and Kane counties, Illinois, United States
McHenry	27,100	City in Illinois
Cary	17,929	Village in Illinois, United States
Harvard	8,979	Private research university in Cambridge, Massachusetts, United States
Chemung	8,702	Township in McHenry County, Illinois
Marengo	7,377	City in McHenry County, Illinois, United States
Johnsburg	6,310	Village in United States of America
Lakemoor	5,912	City in Illinois, United States of America
Spring Grove	5,679	City in Houston County, Minnesota, United States
Fox River Grove	4,518	City in United States of America
Lawrence	4,380	Township in Lawrence County, Illinois
Wonder Lake	3,837	Human settlement in Illinois, United States of America
Oakwood Hills	2,011	City in Illinois, United States of America

Riley, Illinois