Waterloo City is a city in Jefferson County, Wisconsin, home to about 3,600 people across 3.8 square miles. Its ZIP code is 53594.
Homes sold for a median of $187 per square foot in the three months ending August 2026, a seller’s market.
Mostly Waterloo City; also Lake Mills Town and Waterloo Town (Jefferson County)
Each card is that ZIP code’s whole market, including any part outside Waterloo City. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Waterloo City’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | General Mitchell International Airport (MKE)57 miles away |
|---|---|
| Closer regional airport | Dane County Regional Truax Field (MSN)18 miles away |
| Nearest city of 250,000+ | Madison, WI23 miles away |
| Nearest city of 1 million+ | Chicago, IL114 miles away |
Straight-line distances from the center of Waterloo City; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Waterloo City had 3,492 residents in the 2020 census, up 7% since 2000.
It’s the 263rd largest of 1,889 towns in Wisconsin by population.
Jefferson County grew from 34,789 residents in 1900 to 84,900 in 2020.
Jefferson County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 82°F in summer, and winter lows average 11°F. About 38.3 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Waterloo Wwtp, WI weather station (about a mile away).
31,584 jobs at 2,058 businesses in Jefferson County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
11 doctors and other health care providers list an office in Waterloo City.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Dentists | 2 |
| Nurse practitioners and physician assistants | 5 |
| Mental health providers | 1 |
| Chiropractors | 2 |
| Pharmacies | 2 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (3 nearby)
Grocery stores (1 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Waterloo School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Waterloo ElementaryWaterloo | Pre-K–4 | 281 | Public | 0.7 mi |
| Waterloo IntermediateWaterloo | 5–6 | 114 | Public | 0.8 mi |
| Waterloo MiddleWaterloo | 7–8 | 118 | Public | 0.8 mi |
| Waterloo HighWaterloo | 9–12 | 232 | Public | 0.8 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Holy Family SchoolWaterloo | Pre-K–7 | 23 | Roman Catholic | 0.4 mi |
| St John Evangelical Lutheran SchoolWaterloo | Pre-K–8 | 72 | Wisconsin Evangelical Lutheran Synod | 0.2 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Lake Mills Town, Waterloo Town (Jefferson County), Portland Town (Dodge County) and York Town (Dane County).
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.