Washington Lake is a township in Sibley County, Minnesota, home to about 406 people across 34 square miles. It has no ZIP code of its own: it’s part of 55338 and 55339.
Homes sold for a median of $164 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Green Isle City; part is in Washington Lake
Mostly Hamburg; part is in Washington Lake
Each card is that ZIP code’s whole market, including any part outside Washington Lake. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Washington Lake’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field (MSP)40 miles away |
|---|---|
| Nearest city of 250,000+ | Minneapolis, MN40 miles away |
| Nearest city of 1 million+ | Chicago, IL374 miles away |
Straight-line distances from the center of Washington Lake; 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.
Washington Lake had 454 residents in the 2020 census, down 10% since 2000.
It’s the 1232nd largest of 2,727 towns in Minnesota by population.
Sibley County grew from 16,862 residents in 1900 to 14,836 in 2020.
Sibley County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 81°F in summer, and winter lows average 3°F. About 31.6 inches of rain and melted snow fall in a typical year, with about 50 inches of snow.
Source: NOAA 1991–2020 climate normals, Brownton Wwtp, MN weather station (17 miles away).
3,390 jobs at 359 businesses in Sibley County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
2 doctors and other health care providers list an office in Washington Lake’s ZIP codes.
Nearest hospitals
Providers with an office here
| Mental health providers | 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 (2 nearby)
Libraries
Counts are within about 4 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.
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Emanuel Lutheran SchoolHamburg | Pre-K–8 | 53 | Lutheran Church–Missouri Synod | 2.8 mi |
Source: U.S. Department of Education, NCES: Common Core of Data 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 Hamburg, Green Isle City, Green Isle Township and Young America.
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.