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Iowa County
Lyon County, Iowa
Iowa's northwest corner and Rock River valley - from Lyon County's unique position as Iowa's only county to border three states (Minnesota to the north, South Dakota to the west, and Nebraska across the Big Sioux River) to the county's productive northwest Iowa prairie agriculture (Lyon County's flat, fertile terrain supports intensive corn, soybean, and livestock production in one of Iowa's most agricultural corners, with Rock Rapids serving the surrounding farm economy).
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What do you need to do?
Tell us your goal and we'll guide you step-by-step to the right office, forms, and official resources.
Office: Lyon County Emergency Management – located within the Lyon County Law Enforcement Center, 410 S. Boone Street, Rock Rapids, IA 51246; Coordinator Arden Kopischke, (712) 400-9700. Uses the Smart911 alert system for road closures, severe weather, and missing-person notifications.
Sheriff: Lyon County Sheriff’s Office (Law Enforcement Center) – 410 S. Boone Street, Rock Rapids, IA 51246 | (712) 472-8300 | Fax (712) 472-2303; Sheriff Brian Hilt. Composed of Law Enforcement, Dispatch/Communications, and Jail/Detention divisions; K-9 Versa (German Shepherd, narcotics detection, since 2022).
Notes: For an active emergency, call 911.
Roads & Utilities
ROADS & TRANSPORTATION
Roads: US-59 and IA-9 serve Rock Rapids, the county seat, in Iowa’s northwestern corner along the Big Sioux and Rock Rivers, bordering both South Dakota and Minnesota.
Notes: Lyon County’s boundaries were set January 15, 1851, but it was first named Buncombe County; the state legislature renamed it Lyon County on September 11, 1862, honoring Brigadier General Nathaniel Lyon, killed at the Battle of Wilson’s Creek, Missouri, on August 10, 1861. The county formally organized and split from Woodbury County administration on January 1, 1872, with early business conducted from private homes in Beloit before Rock Rapids was chosen as county seat in 1873 for its central location.
Business & Permits
BUILDING & PERMITS
Office: Lyon County Courthouse – 206 S. 2nd Avenue, Rock Rapids, IA (built 1916-1917, Beaux-Arts, architect Joseph Schwartz of Sioux Falls; National Register of Historic Places since 1979; the second courthouse building in county history).
Notes: Northwestern Lyon County is home to outcrops of Sioux Quartzite, a distinctive pink-to-purple Precambrian rock – the oldest exposed bedrock in Iowa – that forms part of the “quartzite country” spanning northwestern Iowa, southwestern Minnesota, and southeastern South Dakota. The stone has been quarried and used architecturally throughout the tri-state region for well over a century. Rock Rapids itself preserves several genuine historic structures, including the Melan Bridge, the Klondike Bridge, and the Burlington, Cedar Rapids and Northern Railroad station, track, and bridge.
Veterans Services
VETERANS SERVICES
Office: Lyon County Veterans Service Office – 300 S. 4th Avenue, Suite 100, Rock Rapids, IA 51246.
Libraries
LIBRARIES
Rock Rapids Public Library (Rock Rapids) – confirm current address/phone via the county library system.
Parks & Recreation
PARKS & RECREATION
Key Assets: Lake Pahoja Recreation Area and Nature Center (1651 180th Street, Inwood, IA), the Melan and Klondike historic bridges, and the Sioux Quartzite outcrops are the county’s premier natural and heritage attractions.
Notes: The genuine geological distinctiveness of Iowa’s oldest exposed bedrock, found only in this corner of the state, is among the standout natural features covered in this project.
GIS & Maps
GIS & MAPS
Appraisal/Parcel Search: Lyon County Assessor’s Office – Courthouse, 206 S. 2nd Avenue, Suite 103, Rock Rapids, IA 51246 | (712) 472-8550.
Animal Services
ANIMAL SERVICES
Lyon County Animal Services – Rock Rapids, IA | confirm current phone via lyoncounty.iowa.gov; county municipal shelter working toward a no-kill community.
Environmental & Waste
ENVIRONMENTAL / WASTE MANAGEMENT
Office: Lyon County Environmental Health – 300 S. 4th Avenue, Rock Rapids, IA 51246 | (712) 472-8200.
NOTES: Lyon County is the sixty-first county in Iowa’s Round 3 v2 redo, under the A+ sourced standard established for this project. The genuine geological distinctiveness of Iowa’s oldest exposed bedrock is among the standout natural features covered in this project. All contact information above was sourced via web search as of early August 2026 and should be reconfirmed directly with the relevant office before a visit, deadline-sensitive filing, or emergency-adjacent decision.
About Lyon County
Lyon County is Iowa’s northwest corner county and one of the state’s most distinctly agricultural – the flat, fertile prairie landscape produces strong corn, soybean, and hog yields while Rock Rapids serves as the governmental and commercial center for a county that borders three neighboring states.
Rock Rapids (the county seat, population ~2,500) is Lyon County’s governmental hub, offering county services to residents across Iowa’s most northwest corner and providing a commercial center for the surrounding northwest Iowa farm communities.
All Services
Browse every category and topic available for this county.
Lyon County Assessor at 206 S. 2nd Avenue, Rock Rapids, IA 51246, phone 712-472-3820. IA assessed at 100% market value with residential rollback.
Courts & Legal
Lyon County District Court at 206 S. 2nd Avenue, Rock Rapids, IA 51246, phone 712-472-2612, handles probate.
Marriage & Vital Records
Marriage licenses, divorce records, and birth & death certificates are handled by the following office(s):
CLERK OF DISTRICT COURT (Court Records, Marriage Licenses)
206 S. 2nd Ave., Rock Rapids, IA 51246
(712) 472-2623
Genealogy
County-level record sources
Lyon County District Court (probate/estate case files – see Probate section above).
Local societies
No dedicated Lyon 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
Lyon County District Court, 3rd Judicial District 206 South 2nd Avenue, Rock Rapids, IA 51246 (712) 472-8530 Lyon County is in Iowa’s extreme northwestern corner, bordering both Minnesota and South Dakota.
Step 1: figure out which path applies
Iowa has its own comprehensive probate code (Iowa Code Chapter 633) and has not formally adopted the Uniform Probate Code. Iowa offers several tracks depending on estate size and complexity:
Distribution by Affidavit (“very small estates”) – for estates where the gross value of personal property is $50,000 or less and there is no real estate, available 40 days after death under Iowa Code § 633.356. A sworn affidavit is presented directly to banks and other institutions. No court filing is required.
Small Estate Administration – a simplified probate process under Iowa Code Chapter 635 for estates with a gross value of $200,000 or less, with reduced notice requirements and court costs compared to full administration.
Regular (Full) Probate – standard administration through the district court for larger or more complex estates, which can be independent (unsupervised) or supervised.
Supervised Administration – closer court oversight, typically used for contested estates.
Step 2: filing for formal probate
File a Petition for Probate of Will and Appointment of Executor (if there’s a will) or a Petition for Administration (if intestate) with the Lyon County District Court.
The court admits the will (if any) and issues Letters Testamentary (with a will) or Letters of Administration (intestate) appointing the personal representative.
Publish notice to creditors; under independent administration, creditors generally have 4 months from the date of first publication to file claims.
The personal representative inventories assets, pays valid debts and expenses, and – under independent administration – largely acts without ongoing court check-ins.
After the creditor period closes and debts are paid, the personal representative distributes assets to heirs or beneficiaries.
File a final accounting/final report; the court closes the estate upon approval.
What it costs
Personal representative fees are capped by statute at 3% of the gross value of the probate estate (excluding life insurance) unless services are itemized; attorney fees follow a similar framework.
Recording fees at the county recorder run about $7 for the first page of a document and $5 for each additional page.
Typical timelines: Distribution by Affidavit – a minimum 40-day wait; independent (unsupervised) probate typically closes in 6-12 months, with the 4-month creditor period as the primary timing constraint.
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
206 S. 2nd Ave., Rock Rapids, IA 51246
(712) 472-2614
Elections & Voting
Voter registration, polling locations, and elections information are handled by the following office(s):
COUNTY AUDITOR (Records, Elections, Finance)
206 S. 2nd Ave., Rock Rapids, IA 51246
(712) 472-2621
ELECTIONS (County Auditor)
206 S. 2nd Ave., Rock Rapids, IA 51246
(712) 472-2621
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
Office: Lyon County Public Health – 300 S. 4th Avenue, Suite 200, Rock Rapids, IA 51246.
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