Castle Rock is a township in Dakota County, Minnesota, home to about 1,502 people across 35 square miles. It has no ZIP code of its own: it’s part of 55024, 55031 and 55065.
Homes sold for a median of $192 per square foot across 3 ZIP codes in the three months ending August 2026, and 1 of 3 were seller’s markets.
Mostly Farmington; part is in Castle Rock
Mostly Hampton City; part is in Castle Rock
Mostly Randolph Township; part is in Castle Rock
Each card is that ZIP code’s whole market, including any part outside Castle Rock. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Castle Rock’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)18 miles away |
|---|---|
| Nearest city of 250,000+ | St. Paul, MN22 miles away |
| Nearest city of 1 million+ | Chicago, IL334 miles away |
Straight-line distances from the center of Castle Rock; 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.
Castle Rock had 1,350 residents in the 2020 census, down 10% since 2000.
It’s the 427th largest of 2,727 towns in Minnesota by population.
Dakota County grew from 21,733 residents in 1900 to 439,882 in 2020.
Dakota 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 8°F. About 32.3 inches of rain and melted snow fall in a typical year, with about 41 inches of snow.
Source: NOAA 1991–2020 climate normals, Farmington 3 Nw, MN weather station (4 miles away).
185,426 jobs at 10,964 businesses in Dakota County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
73 doctors and other health care providers list an office in Castle Rock’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 9 |
|---|---|
| Dentists | 8 |
| Nurse practitioners and physician assistants | 8 |
| Mental health providers | 14 |
| Physical and occupational therapists | 17 |
| Optometrists | 3 |
| Chiropractors | 14 |
| 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 (16 nearby)
Grocery stores
Pharmacies
Libraries (1 nearby)
Theaters and performance venues
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 Farmington Public School District, Randolph Public School District, Great Oaks Academy Charter School. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Akin Road ElementaryFarmington | Pre-K–5 | 479 | Public | 4.3 mi |
| Farmington ElementaryFarmington | Pre-K–5 | 493 | Public | 1.8 mi |
| Meadowview ElementaryFarmington | Pre-K–5 | 600 | Public | 4.9 mi |
| North Trail ElementaryFarmington | Pre-K–5 | 612 | Public | 6.3 mi |
| Randolph ElementaryRandolph | Pre-K–6 | 445 | Public | 8.0 mi |
| Riverview ElementaryFarmington | Pre-K–5 | 573 | Public | 2.5 mi |
| Farmington Online - ElementaryFarmington | K–5 | — | Public | 5.2 mi |
| Great Oaks Academy - GrammarFarmington | K–5 | 430 | Charter | 2.3 mi |
| Farmington Online - MiddleFarmington | 6–8 | — | Public | 5.2 mi |
| GOA School of LogicFarmington | 6–8 | 101 | Charter | 14.5 mi |
| Levi P. Dodge Middle SchoolFarmington | 6–8 | 692 | Public | 2.5 mi |
| Robert Boeckman Middle SchoolFarmington | 6–8 | 855 | Public | 2.5 mi |
| Randolph SecondaryRandolph | 7–12 | 430 | Public | 8.0 mi |
| Dakota Prairie Area Learning CenterFarmington | 8–12 | 1 | Alternative Education | 5.2 mi |
| Farmington High SchoolFarmington | 9–12 | 2,153 | Public | 5.2 mi |
| Farmington Online - HighFarmington | 9–12 | — | Public | 5.2 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 Farmington, Empire, Lakeville, Eureka, Randolph Township, Hampton City, Hampton Township, Randolph City, Vermillion Township, Sciota, Douglas and New Trier.
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.