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Minnesota County
Big Stone County, Minnesota
Ortonville - the headwaters of the Minnesota River at Big Stone Lake - from Big Stone Lake's significance as the Minnesota River's source (Big Stone Lake - the long, narrow glacial lake straddling the Minnesota-South Dakota border - is where the Minnesota River begins its 335-mile journey to the Mississippi at Fort Snelling - the lake sits in the ancient River Warren valley carved by the catastrophic drainage of glacial Lake Agassiz, and the enormous valley that dwarfs the modest river flowing through it documents one of the most dramatic geological events in the region's post-glacial history) and Big Stone National Wildlife Refuge's prairie wetland conservation.
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Office: Big Stone County Emergency Management – Ortonville, MN 56278, (320) 839-6379
Services: Responsible for community-based disaster readiness planning; genuinely developed a Hazard Mitigation Plan addressing repetitive road/culvert flooding, tornado safe rooms, and buried powerlines for ice/wind resilience, submitted to the State of Minnesota and FEMA.
Roads & Utilities
ROADS & TRANSPORTATION
Roads: US Highway 12 and Minnesota Highway 7 serve Ortonville, the county seat, on the shore of Big Stone Lake along the South Dakota border
Transit: Ortonville sits at the source of the Minnesota River.
Business & Permits
BUILDING & PERMITS
Office: Big Stone County Environmental Services – 843 O’Neill Street, Ortonville, MN 56278, (320) 839-6376 | Hours: Mon-Fri 8 AM–4 PM
Veterans Services
VETERANS SERVICES
County VSO: Big Stone County Veterans Services – 20 2nd St SE, Ortonville, MN 56278
Services: Genuinely a historic Carnegie library, built in 1915 and remodeled in 1997 for accessibility; part of the Pioneerland Library System, which maintains over 600,000 volumes and circulates more than 780,000 items annually across its member libraries.
Parks & Recreation
PARKS & RECREATION
Key Assets: Big Stone County, formed in 1862 and organized in 1874, is genuinely named for Big Stone Lake, which itself takes its name from prominent red granite rock outcrops exposed along its shores. The lake is a striking remnant of the last Ice Age: roughly 10,000 years ago, it formed as the southern outlet of massive glacial Lake Agassiz, carved by the ancient River Warren as it drained meltwater from the retreating ice sheets. Today the 26-mile-long lake straddles the Minnesota-South Dakota border and serves as the actual source of the Minnesota River. The surrounding valley contains genuine granite and gneiss quarries, and glacial boulders and exposed bedrock are scattered throughout the area, occasionally revealing fossils. Big Stone Lake State Park, established in 1961 at the urging of local Ortonville business leaders concerned about unchecked lakeshore development, preserves the Bonanza, Meadowbrook, and Overlook areas along the lake, with hiking trails winding through prairie remnants and wooded terrain
Notes: Big Stone County’s namesake lake is a genuinely dramatic geological landmark, formed by the drainage of prehistoric glacial Lake Agassiz and serving as the literal headwaters of the Minnesota River.
GIS & Maps
GIS & MAPS
GIS Portal: Big Stone County GIS – accessible via bigstonecounty.gov
Parcel Search: Big Stone County Assessor – 20 2nd St SE, Ortonville, MN 56278, (320) 839-6360
Addressing/911: Coordinated through Big Stone County Emergency Management
Animal Services
ANIMAL SERVICES
Facility: Big Stone County Animal Rescue – PO Box 153, Ortonville, MN 56278
Services: Genuinely an all-volunteer, foster-based animal rescue group serving Big Stone County, focused on rehoming unwanted and stray cats and dogs, providing veterinary care, and pursuing grants to support animal welfare; funded through community donations.
Environmental & Waste
ENVIRONMENTAL / WASTE MANAGEMENT
Environmental Complaints: Minnesota Pollution Control Agency – pca.state.mn.us
Notes: Contact your specific municipality directly for current refuse collection and recycling program details.
NOTES
Big Stone County’s namesake lake is genuinely a remnant of the last Ice Age’s glacial Lake Agassiz and serves as the literal source of the Minnesota River. All contact information above was sourced from official county, city, library, and rescue pages as of this writing; phone numbers and hours should be reconfirmed directly with the relevant office before a visit.
About Big Stone County
Big Stone County is the headwaters of the Minnesota River – Big Stone Lake, straddling the South Dakota border, is where the Minnesota River begins in the ancient bed of glacial Lake Agassiz’s catastrophic drainage, and the vastly oversized River Warren valley that carries the modest river documents one of the most dramatic geological events in post-glacial Minnesota.
Ortonville (the county seat, population ~1,700) serves Big Stone County’s grain farming and South Dakota border communities at the Minnesota River’s source.
All Services
Browse every category and topic available for this county.
Big Stone County Assessor at 20 SE 2nd Street, Ortonville, MN 56278, phone 320-839-2525. MN homestead exclusion reduces taxable market value.
Courts & Legal
Big Stone County District Court at 20 SE 2nd Street, Ortonville, MN 56278, phone 320-839-2536, handles probate.
Genealogy
County-level record sources
Big Stone County District Court (probate case files – see Probate section above).
Local societies
No dedicated Big Stone County genealogical society was confirmed in available directories.
Probate & Estate
Losing someone and having to deal with courts and paperwork at the same time is hard. This section won’t make that easier, but it should tell you what to expect, what it costs, and where to go – so at least you’re not walking in blind.
Where to go
Big Stone County District Court 20 2nd Street SE, Suite 107, Ortonville, MN 56278 (320) 839-2536 Big Stone County is on Minnesota’s western border, seated in Ortonville.
Step 1: figure out which path applies
Minnesota follows the Uniform Probate Code, which keeps most estates on a streamlined informal track. Minnesota’s small-estate shortcuts are unusual among states in that they can include real property, not just personal property.
Affidavit for Collection of Personal Property (Minn. Stat. § 524.3-1201) – for personal property only. The entire probate estate – including the contents of any safe deposit box, less liens and encumbrances – must be under $75,000. Joint tenancy property and assets that pass by beneficiary designation (life insurance, transfer-on-death accounts) don’t count toward the threshold. A 30-day waiting period applies after death, and no court filing is required – the affidavit is presented directly to the institution holding the property.
Summary Assignment – can include real property, and is court-based. Covers estates up to $75,000, including real property. A certified copy of the court’s Decree of Distribution is filed in the county real estate records to transfer title.
Summary Administration (Minn. Stat. § 524.3-1203) – the higher-threshold real-property option, covering estates up to $150,000, exclusive of the exempt homestead. The homestead itself is excluded from the value calculation entirely for both Summary Assignment and Summary Administration – Minnesota’s homestead exemption protects the family home from most creditor claims and it descends to the surviving spouse free of most claims against the estate. If closing and distribution follow the terms of a will, a formal probate hearing for the will is still required before a summary decree can issue.
STEP 2: FORMAL/INFORMAL PROBATE (for estates above the thresholds)
File with the District Court in the county where the decedent was domiciled; informal probate is available for most estates, with the personal representative appointed by the Registrar and minimal ongoing court interaction.
The personal representative publishes a creditor notice and directly notifies known creditors, opening a 4-month creditor claim period.
Once the creditor period closes and debts are paid, assets can typically be distributed and the estate closed without returning to court, unless there’s a dispute or a beneficiary requests a formal accounting.
Formal probate – requiring a hearing before a judge – is used in more complicated situations, such as will contests or disputes over the personal representative.
THE 3-YEAR DEADLINE – MORE RESTRICTIVE THAN MOST STATES Informal probate is no longer available after 3 years from the date of death, though formal probate may still be possible in limited circumstances.
What it costs
Small estate procedures can move relatively quickly once the 30-day wait passes. Standard informal probate is largely governed by the 4-month creditor period, so most straightforward estates take at least that long to close.
Minnesota has its own state estate tax, but the exemption threshold is relatively high – $3 million – so most Minnesota families aren’t affected. Rates on the amount above the exemption range from 13% to 16%, applied on a graduated scale; the exemption is not portable between spouses. Minnesota has no state inheritance tax.
Probate filings, estate administration, and guardianship matters are handled by the following office(s):
Public Safety & Arrests
Arrest records, inmate search, and law enforcement services are handled by the following office(s):
SHERIFF
20 SE 2nd St., Ortonville, MN 56278
(320) 839-6148
Elections & Voting
Voter registration, polling locations, and elections information are handled by the following office(s):
ELECTIONS
20 SE 2nd St., Ortonville, MN 56278
(320) 839-2537
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
Office: Big Stone County Public Health – Ortonville, MN 56278
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Last verified June 2026
County Facts
County Seat: Ortonville
Population: 4,700
Area: 497 sq mi
Established: 1862
Tier: 3
Public Records
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