Merrimac Town is a town in Sauk County, Wisconsin, home to about 1,075 people across 24 square miles. Its ZIP code is 53561.
Homes sold for a median of $251 per square foot in the three months ending August 2026, a seller’s market.
Mostly Merrimac Town; also Merrimac Village and Caledonia Town (Columbia County)
Each card is that ZIP code’s whole market, including any part outside Merrimac Town. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | General Mitchell International Airport (MKE)93 miles away |
|---|---|
| Closer regional airport | Dane County Regional Truax Field (MSN)23 miles away |
| Nearest city of 250,000+ | Madison, WI23 miles away |
| Nearest city of 1 million+ | Chicago, IL146 miles away |
Straight-line distances from the center of Merrimac Town; 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.
Merrimac Town had 1,247 residents in the 2020 census, up 44% since 2000.
It’s the 835th largest of 1,889 towns in Wisconsin by population.
Sauk County grew from 33,006 residents in 1900 to 65,763 in 2020.
Sauk County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 10°F. About 39.3 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Lodi, WI weather station (7 miles away).
31,025 jobs at 1,876 businesses in Sauk County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1 doctors and other health care providers list an office in Merrimac Town.
Nearest hospitals
Providers with an office here
| Specialist doctors | 1 |
|---|
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 (4 nearby)
Grocery stores
Libraries
Museums
Counts are within about 3.5 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 Sauk Prairie School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Merrimac CommunityMerrimac | Pre-K–5 | 134 | Public | 0.8 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Merrimac Village, Caledonia Town (Columbia County) and Sumpter.
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.