Black Hammer is a township in Houston County, Minnesota, home to about 269 people across 36 square miles. It has no ZIP code of its own: it’s part of 55974.
Homes sold for a median of $104 per square foot in the three months ending August 2026, a balanced market.
Mostly Spring Grove City; part is in Black Hammer
Each card is that ZIP code’s whole market, including any part outside Black Hammer. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Black Hammer’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)120 miles away |
|---|---|
| Closer regional airport | La Crosse Regional Airport (LSE)29 miles away |
| Nearest city of 250,000+ | St. Paul, MN120 miles away |
| Nearest city of 1 million+ | Chicago, IL233 miles away |
Straight-line distances from the center of Black Hammer; 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.
Black Hammer had 272 residents in the 2020 census, down 17% since 2000.
It’s the 1569th largest of 2,727 towns in Minnesota by population.
Houston County grew from 15,400 residents in 1900 to 18,843 in 2020.
Houston County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 80°F in summer, and winter lows average 4°F. About 38.6 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Mabel, MN weather station (7 miles away).
4,309 jobs at 394 businesses in Houston County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
6 doctors and other health care providers list an office in Black Hammer.
Nearest hospitals
Providers with an office here
| Primary care doctors | 2 |
|---|---|
| Nurse practitioners and physician assistants | 2 |
| Physical and occupational therapists | 1 |
| Chiropractors | 1 |
| Pharmacies | 3 |
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 (2 nearby)
Libraries (1 nearby)
Museums
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.
Public schools here are run by Spring Grove School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Spring Grove ElementarySpring Grove | Pre-K–6 | 186 | Public | 0.2 mi |
| Spring Grove SecondarySpring Grove | 7–12 | 163 | Public | 0.2 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 Spring Grove City, Spring Grove Township and Wilmington.
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.