Waterloo, Illinois
Waterloo: city in Illinois
About
Waterloo is a city located in the county of Monroe in the U.S. state of Illinois. Its population at the 2010 census was 9,811 and a population density of 458 people per km². After 10 years in 2020 city had an estimated population of 10,536 inhabitants.
The city was created 208 years ago in 1817.
Quick Facts about Waterloo
| Population | 10,536 (2020) |
| Country | United States of America |
| State | Illinois (United States) |
| County | Monroe County |
| Postal code | 62298 |
| Phone Area Codes | 618 |
| Area | 21.42 km2 |
| Latitude & Longitude | 38.3359,-90.1498 |
| Altitude | 719 feet / 219 meters |
| Capital city | Waterloo is capital of Monroe County |
| Establishment | January 01, 1818 (208 years ago) |
| Time Zone | America/Chicago |
| Local time | 23:59:50 (22nd April 2026) |
| Density | 492 Pop. per km² as of 2020 |
| Population growth | 6.88% (2010-2020) |
| Weather | 78℉ Sunny 7-days weather |
Geography
Waterloo is located at 38°20'9"N 90°8'59"W (38.3358900, -90.1498300).
Waterloo map
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Official website of Waterloo
Official WebsiteDemographics
The population of Waterloo increased by 6.88% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 9,811 | - | census |
| 2011 | 10,070 | 2.57% | estimation process |
| 2012 | 10,083 | 0.13% | estimation process |
| 2013 | 10,124 | 0.4% | estimation process |
| 2014 | 10,117 | -0.07% | estimation process |
| 2015 | 10,183 | 0.65% | estimation process |
| 2016 | 10,249 | 0.64% | estimation process |
| 2017 | 10,381 | 1.27% | estimation process |
| 2018 | 10,470 | 0.85% | estimation process |
| 2019 | 10,578 | 1.02% | estimation process |
| 2020 | 10,536 | -0.4% | estimation process |
Services and Civic Places in Waterloo
1Waterloo City Hall
100 W 4th St, Waterloo, IL 62298 View details
Phone: +16189398600 | Website available
People born in Waterloo (2)
People born in Waterloo, including naturalist John Kern Strecker, US association football player Brian Bement, .
More notable people
Nearby Schools and Colleges
Schools and campuses linked to Waterloo, IL. Select a name to open its map and contact details.
| Code | Name | City | ZIP |
|---|---|---|---|
| 483911 | Creative Touch Cosmetology School | Waterloo (IL) | 62298-1609 |
Nearby Transit Stations (10)
Rail and bus stations connected to Waterloo, IL. Select a station to open its map and address details.
| Code | Name | Address | Type |
|---|---|---|---|
| STL | Gateway Transportation Center | 551 South 16th St. | RAIL |
| KWD | Kirkwood | 110 West Argonne Dr. | RAIL |
| ALN | Alton | 3400 College Ave. | RAIL |
| WAH | Washington | 301 West Front St. | RAIL |
| DQN | Du Quoin | 20 North Chestnut St. | RAIL |
Closest post offices linked to Waterloo.
| Post Office Name | City | ZIP |
|---|---|---|
| Waterl Post Office | Waterloo (IL) | 62298 |
Other places with the same name (11)
- Waterloo, Iowa The most populous city in Black Hawk County, Iowa. with a population of 67,292 people.
- Waterloo, New York city in Seneca County, New York, United States of America with a population of 4,864 people.
- Waterloo, Michigan township in Jackson County, Michigan with a population of 2,882 people.
- Waterloo, Ohio human settlement in Ohio, United States with a population of 2,605 people.
- Waterloo, Wisconsin fourth-class city in Jefferson County, Wisconsin with a population of 940 people.
- Waterloo, Nebraska village in Nebraska, United States with a population of 914 people.
- Waterloo, Indiana town in Indiana, United States with a population of 571 people.
- Waterloo, Kansas human settlement in United States of America with a population of 279 people.
- Waterloo, Oregon city in Oregon, USA with a population of 250 people.
- Waterloo, Alabama town in Lauderdale County, Alabama, United States with a population of 199 people.
- Waterloo, South Carolina town in Laurens County, South Carolina, United States with a population of 170 people.
Other cities in Monroe County
Cities, towns, neighborhoods & other populated places in Monroe County , IL.
| City Name | Population | Title |
|---|---|---|
| Columbia | 10,627 | City in Illinois, United States |
| Valmeyer | 1,238 | Human settlement in Illinois, United States of America |
| Hecker | 474 | Village in United States of America |
| Maeystown | 162 | Human settlement in United States of America |
| Fults | 28 | Village in United States of America |
Distance to Other Cities
Waterloo distances to largest Illinois cities