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Office: Monona County Emergency Management – confirm current contact via mononacountyiowa.gov.
Sheriff: Monona County Sheriff’s Office – 909 7th Street, Onawa, IA 51040 | (712) 423-2525 or (712) 433-1414 | Courthouse (712) 423-9539; 7 full-time deputies. In continuous service since 1854 (originally one sheriff and one deputy). Handles countywide animal control matters directly.
Notes: For an active emergency, call 911.
Roads & Utilities
ROADS & TRANSPORTATION
Roads: I-29 and IA-175 serve Onawa, the county seat, in western Iowa’s Loess Hills region, along the Missouri River.
Notes: Monona County was formed in 1851 and organized in 1854, likely named for a word meaning “beautiful valley.” The area near Onawa was a documented 1804 stopping point for the Lewis and Clark Expedition during their exploration of the newly acquired Louisiana Purchase, later commemorated as Lewis and Clark State Park.
Business & Permits
BUILDING & PERMITS
Office: Monona County Courthouse – 610 Iowa Avenue, Onawa, IA (built 1892, Romanesque Revival, architect S.E. Maxon of Omaha; National Register of Historic Places since 1981; the third courthouse building in county history).
Notes: Onawa carries two genuinely notable claims to fame. It is home to the widest main street in the continental United States, a distinction that has made the town a minor roadside-attraction destination for decades. It is also the true birthplace of the Eskimo Pie: in 1920, local ice cream shop owner Chris Nelson invented the chocolate-covered ice cream bar there (the treat was later renamed Edy’s Pie). The town also holds the only authentic life-size replica of the Lewis and Clark expedition’s keelboat Discovery, and briefly hosted a small WWII German POW camp (1944-1946, never more than about 50 prisoners). Onawa’s name comes from a character in Henry Wadsworth Longfellow’s poem “The Song of Hiawatha.”
Veterans Services
VETERANS SERVICES
Office: Monona County Veterans Affairs – Courthouse, 610 Iowa Avenue, Onawa, IA 51040.
Libraries
LIBRARIES
Onawa Public Library (Onawa) – confirm current address/phone via the county library system.
Parks & Recreation
PARKS & RECREATION
Key Assets: Lewis and Clark State Park (176 acres, 250-acre Blue Lake, camping/boating/fishing), the Loess Hills Scenic Byway, the Onawa Kiwanis Museum Complex, and the replica keelboat Discovery are the county’s premier heritage and recreational attractions.
Notes: The genuine story of the Eskimo Pie’s invention in Onawa, alongside the town’s famously wide main street, are among the standout local claims to fame covered in this project.
GIS & Maps
GIS & MAPS
Appraisal/Parcel Search: Monona County Assessor’s Office – Courthouse, Onawa, IA 51040.
Animal Services
ANIMAL SERVICES
⚠️ No confirmed dedicated Monona County animal shelter was found in current sourcing. The Monona County Sheriff’s Office, (712) 433-1414, directly handles animal control matters countywide, including strays and abuse reports.
Environmental & Waste
ENVIRONMENTAL / WASTE MANAGEMENT
Office: Monona County Environmental Health & Zoning – Courthouse, Onawa, IA 51040.
NOTES: Monona County is the sixty-eighth county in Iowa’s Round 3 v2 redo, under the A+ sourced standard established for this project. The genuine story of the Eskimo Pie’s invention in Onawa, alongside the town’s famously wide main street, are among the standout local claims to fame covered in this project. ⚠️ Animal services are handled directly by the Sheriff’s Office rather than a dedicated shelter – flagged for follow-up rather than smoothed over. 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 Monona County County
Monona County is west Iowa’s Loess Hills and Missouri River county – the dramatic loess bluffs of Preparation Canyon State Park and Onawa’s ice cream sandwich origin story define a county whose geological spectacle and culinary footnote give it a personality larger than its modest size.
Onawa (the county seat, population ~2,700) is Monona County’s governmental hub on US 30, a west Iowa Missouri River community whose Loess Hills access, ice cream sandwich claim, and agricultural economy anchor its identity near the Nebraska border.
All Services
Browse every category and topic available for this county.
Monona County Assessor at 610 Iowa Avenue, Onawa, IA 51040, phone 712-423-2725. IA assessed at actual value.
Courts & Legal
Monona County District Court at 610 Iowa Avenue, Onawa, IA 51040, phone 712-423-2491, 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)
610 Iowa Ave., Onawa, IA 51040
(712) 423-2491
Genealogy
County-level record sources
Monona County District Court (probate/estate case files – see Probate section above).
The Loess Hills region running through the county is a significant local natural landmark.
Local societies
No dedicated Monona 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
Monona County District Court, 3rd Judicial District 610 Iowa Avenue, Onawa, IA 51040 (712) 433-2491 Monona County is in western Iowa along the Missouri River, part of the Loess Hills region.
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 Monona 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
610 Iowa Ave., Onawa, IA 51040
(712) 423-2411
Elections & Voting
Voter registration, polling locations, and elections information are handled by the following office(s):
COUNTY AUDITOR (Records, Elections, Finance)
610 Iowa Ave., Onawa, IA 51040
(712) 423-2491
ELECTIONS (County Auditor)
610 Iowa Ave., Onawa, IA 51040
(712) 423-2491
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
Office: Monona County Public Health – Courthouse, Onawa, IA 51040.
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Last verified June 2026
County Facts
County Seat: Onawa
Population: 8,800
Area: 693 sq mi
Established: 1851
Public Records
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