Waterloo is the seat of Monroe County and the largest community in it, far enough south of the Mississippi River bluffs to feel like its own town rather than a St. Louis suburb, and close enough that the commute still works.
About Waterloo, Illinois
Waterloo has a population of about 11,129 and roughly 4,818 housing units. It is 78.2% owner-occupied, and the median home value is $249,500. The median year built is 1991, which puts its housing stock newer than most of the older Metro East river towns and older than the newest subdivisions in St. Clair County.
Source: U.S. Census Bureau, American Community Survey 5-year estimates (B01003, B25001, B25003, B25035, B25077).
Waterloo IL Real Estate Market Overview
Waterloo is an active market for a town its size, and most of it trades in the middle of the range: more than half of everything that sold went for $200,000 to $400,000.
What actually sold in Waterloo over the past 12 months:
- 223 homes closed between October 2025 and September 2026
- The median sale landed in the $300,000 to $350,000 range
- 14% sold for under $200,000
- 54% sold between $200,000 and $400,000
- 31% sold for more than $400,000
Source: MARIS MLS closed residential sales, October 2025 through September 2026. Single family, condominium, townhouse and villa only; rentals excluded. Pulled November 1, 2026.
The Census adds two longer-run figures: the median value of all owner-occupied homes in Waterloo is $249,500, and 78.2% of occupied homes are owner-occupied, so most of what trades here is primary-residence stock rather than rentals.
Buying a Home in Waterloo, IL
What to weigh before you make an offer in Waterloo:
- Monroe County, not St. Clair. Different county, different tax bill and different school district. Do not assume a St. Clair County comparison carries over.
- Commute discipline. Waterloo runs on Route 3 and Route 156 with I-255 as the link north. Drive your actual commute at your actual departure time before you commit.
- Newer stock, but check the year. A 1991 median means the range runs from genuinely new construction to homes now past thirty years old and due for roof, HVAC and windows.
- Low rental share. At 78.2% owner-occupancy, inventory is thinner than in a rental-heavy market, and well-priced homes move.
Building a new home in Waterloo?
See every new construction community in Waterloo, with builders, prices, HOA dues and homes for sale, on new construction homes in Waterloo, IL. Craig can represent you with the builder, so the builder’s sales agent is not the only one in the room.
Selling Your Home in Waterloo, IL
223 closings in twelve months means there is real buyer traffic here, but it also means your home is being compared against a steady supply of alternatives. Pricing against genuine Waterloo comparables, not Columbia or Belleville ones, is what decides how long you sit.
Schools in Waterloo, IL
Waterloo is served by Waterloo Community Unit School District 5. School assignment follows the address, so confirm the attendance boundary for any specific home before you write an offer.
Commuting from Waterloo
Waterloo sits south of Columbia on the Route 3 corridor, with I-255 carrying traffic north toward downtown St. Louis and east toward the rest of the Metro East. Commute times vary widely by destination and departure time.
Local Favorites in Waterloo
A few places Craig sends friends in Waterloo:
- Stubborn German Brewing Company (South Main Street, downtown): a go-to for Craig and Yvonne.
- Hopskeller Brewing Company (East 3rd Street): order the Fat Bottomed Girls pizza.
- Schneider’s Quality Meats (Illinois Route 3): family-owned meat market since 1966 with great product.
Waterloo IL Real Estate: Common Questions
What county is Waterloo, IL in?
Monroe County, Illinois. Waterloo is the county seat and the largest community in the county.
How many homes sell in Waterloo each year?
223 homes closed in Waterloo between October 2025 and September 2026. (Source: MARIS MLS closed residential sales, pulled November 1, 2026.)
What is a typical home worth in Waterloo, IL?
Homes that sold in Waterloo between October 2025 and September 2026 had a median sale price in the $300,000 to $350,000 range. (Source: MARIS MLS closed residential sales, pulled November 1, 2026.) The Census puts the median value of all owner-occupied homes in Waterloo, sold or not, at $249,500. (Source: American Community Survey 5-year estimates.)
What school district is Waterloo, IL in?
Waterloo Community Unit School District 5, with about 2,685 students in five schools: W J Zahnow Elementary (PreK-1), Rogers Elementary (2-3), Gardner Elementary (4-5), Waterloo Junior High (6-8) and Waterloo High School (9-12). All five received Exemplary, the state’s top overall Profile of Performance, on the 2026 Illinois Report Card. Confirm school assignment by address with the district.
How long is the commute from Waterloo, IL?
The average one-way commute is 26.8 minutes, with 77.4% of workers driving alone and 12.9% working from home. Waterloo sits on the Route 3 corridor south of Columbia, with I-255 as the link north toward St. Louis. (Source: American Community Survey 2020-2024.)
Is Waterloo, IL mostly owner-occupied?
Yes. 78.2% of occupied homes are owner-occupied, so most homes that sell here are primary residences rather than rentals. (Source: American Community Survey 5-year estimates.)
How old are the homes in Waterloo, IL?
The median year built is 1991, newer than most of the older Metro East river towns. The range runs from new construction to homes past thirty years old, so roof, HVAC and windows are normal inspection topics. (Source: American Community Survey 5-year estimates.)
Work With Single Tree Team in Waterloo
Craig Ziegel has been licensed since 2011 and works across the Metro East and St. Louis. If you are buying or selling in Waterloo, get in touch and we will talk through what your specific block is doing.
What Waterloo Clients Say
Craig Ziegel holds a 5.0 rating from 111 Google reviews. Here are reviews from clients he worked with right here in Waterloo. See every review on Google.
★★★★★
“Craig was patient and very knowledgeable. I would highly recommend.”
Calvin Bailey · Waterloo, IL · Google review
★★★★★
“Craig worked with us through every step of the process and was a wealth of knowledge. Our transactions (both buying and selling) were complicated and challenging to say the least. Craig was an invaluable asset and mediator between parties, ultimately saving us a lot of money. He and his team helped us secure an amazing price on the home we were selling and negotiated our dream home. I highly recommend him and his team! reply Reply”
Haley Berghoefer · Waterloo, IL · Google review
Rated 4.8 out of 5 from 50 reviews on Zillow. Here is what clients in Waterloo said. Read every review on Zillow.
★★★★★
“I really enjoyed working with Craig when I bought a home in Illinois. Besides being friendly, personable and professional, he was a great negotiator! He saw to all the details and got me the house I wanted, for a great price!”
Zillow reviewer · Bought a home in Waterloo, IL · 2014 · Zillow review
★★★★★
“My experience with Craig was very pleasant. Being a first-time home buyer, he was very informative of the process and was always willing to answer questions anytime I had them. He was very honest and upfront to the best of his knowledge. I would definetly recommend Craig Ziegel to anyone looking for home.”
Eric · Bought a home in Waterloo, IL · 2017 · Zillow review
Want this kind of experience in Waterloo?
Talk to Craig directly. No pressure, no obligation, and a straight answer on what your Waterloo move actually looks like.
School reports for Waterloo
State report card results for public schools with a Waterloo address. Attendance boundaries do not always follow city limits, so confirm the school for any specific home with the district.
- Gardner Elementary School (Exemplary, 2025 Illinois Report Card)
- Rogers Elementary School (Exemplary, 2025 Illinois Report Card)
- W J Zahnow Elementary School (Exemplary, 2025 Illinois Report Card)
- Waterloo High School (Exemplary, 2025 Illinois Report Card)
- Waterloo Junior High School (Exemplary, 2025 Illinois Report Card)