Open
Local agent spot
This featured-agent spot is open for a licensed local real estate professional in Illinois.
Advertise here →Waterloo, IL · Houses & Market Data
Waterloo, Illinois houses and real estate market data.
Houses in Waterloo, IL (Monroe County) — Census median home value $237,900, county listing prices up about 6.5% over the past year. Market data for Waterloo houses and the broader area.
FEATURED LISTING: WATERFRONT LAKE HOME FOR SALE
Clearlake Oaks Canal-Front Oasis
$425,000 • 3 Beds • 2 Baths • 1,204 Sq Ft
554 Keys, Clearlake Oaks, CA 95423
Luxury Living Lake Lifestyle – Deep Water Access to Clear Lake: PAID-OFF SOLAR • 10-Ft Concrete Seawall • Double Boat Lifts & Private Dock • Hot Tub • Mini-Split HVAC • Close to SF Bay / Wine Country • Cleanest Air in America (Lake County CA) • Spacious Patio and Deck • Open Floor Plan • RV/Boat Parking • Want the Boats? • Make Offer ASAP This Lake Home For Sale in California won't last!
*Listed by Scott Brown, eXp Realty of California, Inc. DRE #01956840. Inquiries delivered directly to listing agent. Search.USAHouses.com*
Contact Agent Direct:
Scott Brown - eXp Realty
Scott@USAHouses.com
Call/Text (707) 474-8855
Click Anywhere on Ad for More Info / Listing Page
Waterloo, IL is in Monroe County, Illinois — this guide covers houses in Waterloo and the whole local market: resale homes, condos, land, and new construction. The most recent Census estimate puts the population at 11,055, with a median household income of $92,005. Census data puts the median value of houses in Waterloo at $237,900.
Info from government sites and builders may have provided source info.
Market overview
Waterloo housing market
Waterloo is in Monroe County, Illinois. Manifest Census and county price-trend data provide baseline context for houses in Waterloo and the surrounding county market.
Median home value (Census ACS)
$237,900
Population (Census ACS)
11,055
Median household income
$92,005
County price trend (2025)
6.53% YoY
Population, income, and median home value from the project batch manifest (Census ACS 2023 5-year). County price trend from FHFA county HPI when present in the manifest row.
At a glance
Waterloo market snapshot
Population
11,055
County
Monroe County
Median Household Income
$92,005
Median Home Value (city)
$237,900
Median Gross Rent
$873/mo
Price Trend (YoY)
+6.5%
Market data compiled from public sources; deemed reliable but not guaranteed; verify independently. See About
Local resources
Get help buying or selling in Waterloo
What can I afford?
Estimate a comfortable price range in under a minute, then connect with a lender for real numbers.
Rough estimate only (28% of income toward housing, ~6.5% illustrative rate, 30-year term) — not a loan offer or pre-qualification. Connect with a lender for real numbers →
Open
Advertise to local buyers
Lenders, inspectors, movers, and other local pros — this spot is open.
Advertise here →Why Waterloo
What makes Waterloo different
Home Value, By Source
The Census Bureau's American Community Survey (2023 5-year estimate) puts Waterloo's median home value — across all owner-occupied homes, not just recent sales — at $237,900.
County Price Trend
Monroe County's FHFA house price index shows a 6.53% annual change in 2025.
Population & Income
Waterloo has an estimated population of 11,055 and a median household income of $92,005, per the Census Bureau's American Community Survey (2023 5-year estimate).
Affordability Snapshot
Waterloo's Census-reported median home value works out to about 2.6x the area's median household income, and median gross rent runs roughly 11% of that same income on an annualized basis. Housing economists commonly flag a price-to-income ratio above 4x as historically elevated -- useful context, not a personal affordability verdict.
Nearby
Places around Waterloo
County guide: Monroe County — cities, market context, and local resources for the county that includes Waterloo.
USAHouses.com also helps visitors looking in nearby Monroe County and other Illinois communities. Some locations may not yet have dedicated pages, but many licensed professionals in this region assist surrounding communities.
Nearby communities include Valmeyer, Columbia, Maeystown, Hecker, Dupo, Fults.
Valmeyer market data
Nearby city · ~8.3 mi
Columbia market data
Nearby city · ~8.8 mi
Maeystown market data
Nearby city · ~8.8 mi
Hecker market data
Nearby city · ~9.0 mi
Dupo market data
Nearby city · ~12.6 mi
Fults market data
Nearby city · ~12.7 mi
More Illinois cities with market guides: Aurora, Joliet, Naperville, Rockford, Elgin, Springfield, Peoria, Waukegan.
Aurora market data
Same-state city guide
Joliet market data
Same-state city guide
Naperville market data
Same-state city guide
Rockford market data
Same-state city guide
Elgin market data
Same-state city guide
Springfield market data
Same-state city guide
Peoria market data
Same-state city guide
Waukegan market data
Same-state city guide
Adjacent-county Census places with USAHouses.com pages: Floraville (~5.8 mi), Paderborn (~5.9 mi), Millstadt (~8.8 mi), Smithton (~10.2 mi), Red Bud (~12.3 mi), East Carondelet (~14.3 mi), Freeburg (~14.5 mi), Belleville (~15.0 mi), New Athens (~15.2 mi), Cahokia Heights (~16.0 mi), Ruma (~16.7 mi), Sauget (~16.9 mi), Swansea (~17.1 mi), Prairie du Rocher (~18.2 mi), Lenzburg (~18.5 mi), Rentchler (~18.6 mi).
New construction: New homes near Waterloo (Chicago) · Illinois new construction.
Census & home facts
Waterloo data from published sources
Population (ACS 2023)
11,055
Median home value (ACS 2023)
$237,900
Median household income (ACS 2023)
$92,005
Median gross rent (ACS 2023)
$873
County FHFA annual change (2025)
6.53%
Census place type
city
County
Monroe County
Land area (Census Gazetteer 2024)
8.29 sq mi
Census GEOID
1779150
Census ACS, FHFA, and FRED figures are labeled with the year present in existing CSVs. Subject to change / confirm locally.
NewUSAHouses.com communities
Closest verified new-home communities near Waterloo
Availability and pricing are controlled by the builder and may change; confirm with the builder.
Langeneckert Farm Estates ↗
McBride Homes · Mehlville, Missouri · ~14.0 mi · from $460,000
Manors At The Timbers ↗
McBride Homes · Imperial, Missouri · ~14.2 mi · from $270,000
Arapaho Village ↗
Champion Homes · Belleville, Illinois · ~14.9 mi
Bella Terra ↗
McBride Homes · Imperial, Missouri · ~15.2 mi · from $300,000
Grove At Grants Trail Meadows ↗
McBride Homes · Affton, Missouri · ~15.7 mi · from $330,000
Local life
Life in Waterloo
Schools
Waterloo CUSD 5 — 5 schools, 2,768 students enrolled, per the U.S. Department of Education's Common Core of Data. Monroe addresses may be served by Waterloo CUSD 5, but attendance zones vary by street — confirm assigned schools with the district before making a move.
Reach Waterloo buyers
Builders: feature your communities in front of Waterloo buyers — learn about advertising ↗
Want to own this market? Ask about our Waterloo domains — see available domains ↗
Common questions
Waterloo FAQ
What are houses worth in Waterloo, IL?
The Census Bureau's American Community Survey puts the median value of houses in Waterloo at $237,900.
How much do houses cost in Waterloo, IL?
For owner-occupied houses in Waterloo, Census ACS data shows a median value of $237,900. Active listing prices in Monroe County may differ — see the market snapshot above.
What types of houses are in Waterloo, IL?
Waterloo houses include resale single-family homes, condos, mobile homes, and small multi-unit buildings, plus new construction in surrounding Monroe County communities where builders are active. The housing-stock section below uses Census ACS structure counts when available for this city.
What is the population of Waterloo, IL?
The U.S. Census Bureau's American Community Survey (2023 5-year estimate) puts Waterloo's population at approximately 11,055.
What's the median rent in Waterloo, IL?
The Census ACS estimates median gross rent in Waterloo at approximately $873 per month.
What is the median household income in Waterloo, IL?
Census ACS data puts the median household income in Waterloo at approximately $92,005.
Is the Waterloo housing market growing?
Monroe County's FHFA house price index shows a 6.53% annual change in 2025.
Is Waterloo, IL affordable relative to income?
Census ACS data puts Waterloo's median home value at about 2.6 times the median household income, with median gross rent equal to roughly 11% of that income annually. This is a general benchmark, not a personal pre-qualification -- your own income, debt, and down payment determine what you can actually afford.
What school district serves Waterloo, IL?
Manifest and public school-directory data suggest Waterloo CUSD 5 for many Waterloo addresses, but attendance zones vary by street — verify your assigned schools with the district before making a move.
Search Waterloo
Look up homes in Waterloo
Search USAHouses.com places, or open verified new construction on NewUSAHouses.com.
New construction in Illinois ↗Get connected
Find your Waterloo new home
Prices, availability, and incentives change weekly and don't always make it onto this page. Tell us your area, budget, and timeline and we'll point you to communities that fit — including options we track but haven't published here yet.
Get connected in WaterlooExplore more
Where to go next
Get the Waterloo market guide
Tell us what you're looking for — buy, sell, both, invest, rent, or you're an agent, builder, vendor, or advertiser. Include where you want to buy or sell and your address if relevant, and we'll route you to the right resource.
Buyer · Seller · Both · Investor · Renter · Agent/Broker · New Home Builder · Vendor/Service Pro · Advertiser · Other
