Orrock is a township in Sherburne County, Minnesota, home to about 3,642 people across 35 square miles. It has no ZIP code of its own: it’s part of 55309 and 55398.
Homes sold for a median of $190 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Big Lake City; part is in Orrock
Mostly Zimmerman; part is in Orrock
Each card is that ZIP code’s whole market, including any part outside Orrock. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Orrock’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)42 miles away |
|---|---|
| Closer regional airport | Saint Cloud Regional Airport (STC)21 miles away |
| Nearest city of 250,000+ | Minneapolis, MN36 miles away |
| Nearest city of 1 million+ | Chicago, IL388 miles away |
Straight-line distances from the center of Orrock; 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.
Orrock had 3,544 residents in the 2020 census, up 28% since 2000.
It’s the 211th largest of 2,727 towns in Minnesota by population.
Sherburne County grew from 7,281 residents in 1900 to 97,183 in 2020.
Sherburne County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 4°F. About 32.9 inches of rain and melted snow fall in a typical year, with about 36 inches of snow.
Source: NOAA 1991–2020 climate normals, Elk Rvr, MN weather station (8 miles away).
24,222 jobs at 2,251 businesses in Sherburne County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
90 doctors and other health care providers list an office in Orrock’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 4 |
|---|---|
| Specialist doctors | 3 |
| Dentists | 16 |
| Nurse practitioners and physician assistants | 11 |
| Mental health providers | 33 |
| Physical and occupational therapists | 13 |
| Chiropractors | 10 |
| Pharmacies | 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 (7 nearby)
Grocery stores (1 nearby)
Pharmacies
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.
Public schools here are run by Big Lake Public School District, Elk River Public School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Liberty ElementaryBig Lake | Pre-K–2 | 756 | Public | 3.1 mi |
| Big Lake Online K-5Big Lake | K–5 | 24 | Public | 3.5 mi |
| Zimmerman ElementaryZimmerman | K–2 | 522 | Public | 6.5 mi |
| Independence ElementaryBig Lake | 3–5 | 758 | Public | 3.6 mi |
| Westwood ElementaryZimmerman | 3–5 | 562 | Public | 5.6 mi |
| Big Lake Middle SchoolBig Lake | 6–8 | 632 | Public | 3.7 mi |
| Big Lake Online 6-12Big Lake | 6–12 | 118 | Public | 3.5 mi |
| Zimmerman MiddleZimmerman | 6–8 | 514 | Public | 6.3 mi |
| Big Lake Senior HighBig Lake | 9–12 | 902 | Public | 3.5 mi |
| Zimmerman High SchoolZimmerman | 9–12 | 704 | Public | 6.3 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 Big Lake City, Zimmerman, Livonia, Big Lake Township, Baldwin, Becker Township (Sherburne County), Blue Hill and Stanford.
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.