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Ohio · Greater Dayton · #549 Most Populous County in the US
Miami County, Ohio
Western Ohio's manufacturing and river heritage county - from Troy's award-winning downtown on the Great Miami River and the A.G. Layne stained glass factory to Piqua's Atlas Imperial Diesel engine history, Tipp City's antiques and boutique shopping district, and the canal-era communities that made the Miami and Erie Canal corridor central to Ohio's early development. Property tax, courts, public records, and senior services for Miami County residents.
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Miami County's assessment ratio means effective tax rates are low — but incorrect appraisals still cost money. Ownwell manages the appeal with no upfront cost.
Office: Miami County Emergency Management Agency – 510 W. Water St., Troy, OH 45373 | (937) 332-8560 | [email protected]; Director Chris Coverstone.
911: Miami County Communication Center – the public safety answering point (PSAP) for all 911 and non-emergency calls, dispatching Police, Fire, and EMS countywide; staffed by 18 full-time telecommunicators, all APCO PST/EMD-certified; supports text-to-911 (“Call if you can, Text if you can’t”).
Notes: For an active emergency, call 911.
Roads & Utilities
ROADS & TRANSPORTATION
Roads: I-75 and SR-41/55 serve Troy, the county seat, in west-central Ohio along the Great Miami River
Transit: No dedicated county-wide public transit system was found in this search – confirm directly with the county or your city
Notes: The Miami and Erie Canal ran through Troy, officially opened July 4, 1837 with General William Henry Harrison in attendance; the last canal boat passed through Troy’s Lock 12 in 1912, with the canal era ending after the disastrous March 1913 flood.
Business & Permits
BUILDING & PERMITS
Office: Miami County Building/Permits – confirm current contact via miamicountyohio.gov.
Notes: Troy, Ohio is genuinely, remarkably the site of the world’s first retail UPC barcode scan – a team of engineers from Hobart Corporation’s Dayton Scale Division scanned a product with a printed UPC label at the Troy Marsh Supermarket on North Market Street on June 25, 1974, a milestone now marked with an official Ohio historical marker. Troy’s early-20th-century entrepreneurial boom also produced the Hobart Manufacturing Company (one of the world’s foremost commercial food equipment makers), Hobart Brothers (a world leader in welding equipment), and the Western Aviation Company (WACO), brought to Troy by Clayton Brukner. The Miami County Courthouse in Troy (built 1885-1888, Beaux Arts style, architect Joseph W. Yost) is listed on the National Register of Historic Places alongside its adjacent power station.
Veterans Services
VETERANS SERVICES
Office: Miami County Veterans Services – 510 W. Water Street, Box 140, Troy, OH 45373 | (937) 440-8126 | Fax: (937) 440-8128; Executive Director/CVSO Selena Loyd; provides transportation coordination and case management support.
State: Ohio Department of Veterans Services – dvs.ohio.gov
Libraries
LIBRARIES
System: Miami County has multiple independent library systems: Troy-Miami County Public Library, 419 W. Main Street, Troy, OH 45373 | (937) 339-0502 (with a Local History & Genealogy Center at the Hobart Government Center, formed 2025 in partnership with the Troy Historical Society, founded 1965); Piqua Public Library, 116 W. High Street, Piqua, OH 45356 | (937) 773-6753; Tipp City Public Library, 11 E. Main Street, Tipp City, OH 45371 | (937) 667-3826; Milton-Union Public Library, 560 S. Main Street, West Milton, OH 45383 | (937) 698-5515; J.R. Clarke Public Library, 102 E. Spring Street, Covington, OH 45318 | (937) 473-2226.
Parks & Recreation
PARKS & RECREATION
Key Assets: The Troy Marsh Supermarket UPC barcode historical marker site, the Miami County Fairgrounds (fair dating to 1846-47), and Lock 9 Park (Piqua) preserving Miami and Erie Canal remnants are the county’s signature attractions.
Notes: The genuine “world’s first UPC barcode scan” heritage is one of the most distinctive retail-technology facts covered anywhere in this project.
GIS & Maps
GIS & MAPS
Appraisal/Parcel Search: Miami County Auditor – confirm current phone via miamicountyohio.gov.
Animal Services
ANIMAL SERVICES
Facility: Miami County Animal Shelter – 1110 N County Rd 25A, Troy, OH 45373 | (937) 332-6919 | Fax: (937) 332-7060 | [email protected] | Hours: Mon/Tue/Fri 10 AM-4 PM, Wed 10 AM-6 PM, Sat 10 AM-2 PM, closed Thu/Sun; Chief Dog Warden/Shelter Director Rob Craft; a no-kill shelter since 2019 (90%+ save rate); adopted animals must be spayed/neutered within 45 days.
Nonprofit: Miami County Partners for Animal Welfare (MCPAW) – Ohio 501(c)3, raising funds for a new expanded no-kill shelter facility.
Environmental & Waste
ENVIRONMENTAL / WASTE MANAGEMENT
Office: Miami County Solid Waste – confirm current contact via miamicountyohio.gov.
NOTES: Miami County is the sixth county in this batch (Mahoning, Marion, Medina, Meigs, Mercer, Miami, Monroe) of the Ohio v2 redo. The genuine “world’s first UPC barcode scan” heritage is one of the most distinctive retail-technology facts covered anywhere 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 Miami County
Miami County is a western Ohio county and the 549th most populous in the United States, covering 407 square miles of the Great Miami River valley between Dayton and Sidney.
Troy (the county seat, population ~26,000) has earned national recognition as one of Ohio’s best-preserved and most charming mid-sized downtowns – the Troy Main Street program and extensive investment in the historic square have made it a frequent recipient of recognition for downtown excellence. The Troy Strawberry Festival (one of the largest single-day free festivals in Ohio) and the city’s commitment to its historic fabric reflect a community proud of its heritage.
Piqua (population ~21,000) is Miami County’s second city – a historic manufacturing town with a distinctive canal-era heritage visible in the Johnston Farm and Indian Agency Historic Site (Ohio’s only surviving early 19th-century Native American agency) and the Piqua Historical Area along the Miami and Erie Canal.
Tipp City (population ~10,000) has developed a distinctive identity as a boutique shopping and antiques destination – its charming downtown with independent shops draws visitors from Dayton and surrounding communities, making it a Miami County tourism anchor despite its small size.
Miami County’s manufacturing heritage includes Dixon Ticonderoga (pencil manufacturer) and significant aerospace and automotive supply chain operations tied to the Dayton metro’s manufacturing cluster.
All Services
Browse every category and topic available for this county.
Ohio appraises at 100% of true value, assessed at 35%. Full reappraisals every six years.
The appeal process: File a complaint with the Miami County Board of Revision at 201 W. Main Street, Troy, OH 45373, phone 937-440-5925. Window: January 1 through April 1. No OH estate or inheritance tax since 2013.
OWNWELL CTA: Miami County Board of Revision: January 1–April 1. Troy downtown revitalization and Tipp City boutique premium supporting stable market. No OH estate or inheritance tax. Ownwell manages the appeal with no upfront cost.
Recommended
Miami County Board of Revision: January 1–April 1. Troy downtown revitalization and Tipp City boutique premium supporting stable market. No OH estate or inheritance tax. Ownwell manages the appeal with no upfront cost.
Courts & Legal
Courts & Legal
Probate Court: The Miami County Probate Court at 201 W. Main Street, Troy, OH 45373, phone 937-440-6010, handles wills, estate administration, guardianships, and trusts.
Common Pleas Court: Handles major civil and criminal matters.
Recorder: The Miami County Recorder at 201 W. Main Street, phone 937-440-5928, maintains real property records. Land records searchable online.
Senior Services
The Miami County Council on Aging at 1695 Experiment Farm Road, Troy, OH 45373, phone 937-440-3985, serves the county’s senior population. Upper Valley Medical Center (Premier Health) in Troy provides significant geriatric care.
Recommended
Assisted living, memory care, and independent living across Miami County - from Troy and Piqua to Tipp City, Covington, and the Great Miami River communities.
Marriage & Vital Records
Marriage licenses, divorce records, and birth & death certificates are handled by the following office(s):
PROBATE COURT
201 West Main St, Troy, OH 45373
(937) 440-6015
Genealogy
County-level record sources
Miami County Probate Court, Troy (probate/estate case files – see Probate section above).
Local societies
No dedicated Miami 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
Miami County Probate Court 201 West Main Street, 2nd Floor, Troy, OH 45373 (937) 440-6050 Miami County is in western Ohio, seated in Troy.
Step 1: figure out which path applies
Ohio has not adopted the Uniform Probate Code, but has incorporated some streamlined concepts into its own system under Title 21 of the Ohio Revised Code (ORC Chapters 2101-2131).
Summary Release from Administration (ORC § 2113.03) – available for very small estates valued at $5,000 or less. Lets the court release assets quickly, often to cover funeral expenses and support the surviving family, without a fiduciary being appointed.
Release from Administration (ORC § 2113.03) – Ohio’s broader small-estate shortcut. Available when the gross probate estate is $35,000 or less, OR up to $100,000 if the entire estate passes to a surviving spouse (by will or by Ohio’s intestacy law). No executor/administrator is appointed; the court releases the estate directly to the person(s) entitled to it.
Full Estate Administration – required when the estate exceeds these thresholds or the situation is otherwise contested or complex. The court appoints a fiduciary (Ohio’s term for executor/administrator), issues a Certificate of Appointment once any will is admitted, and the fiduciary inventories assets, publishes notice to creditors, pays debts, and distributes what remains under ongoing court supervision.
Step 2: filing for administration
File the will (if any) and an application with the Probate Court in the county where the decedent resided.
If pursuing Release from Administration or Summary Release, complete the applicable court forms (Form 5.0 for standard Release, Form 5.10 for Summary Release) along with a complete asset inventory and supporting documents.
For full administration, the court issues Letters Testamentary or Letters of Administration to the appointed fiduciary.
The fiduciary publishes notice to creditors; claims generally must be presented within 6 months of the date of death.
The fiduciary inventories and manages estate assets, pays valid debts and expenses, and distributes what remains according to the will or Ohio’s intestacy law, reporting to the court along the way.
The estate is closed once a final account is filed and approved by the court.
What it costs
Filing fees vary by county – check with Miami County directly for current fees.
No state estate tax, no state inheritance tax (repealed effective January 1, 2013). Only the federal estate tax could apply, and only to very large estates ($15,000,000 per individual as of 2026).
Probate filings, estate administration, and guardianship matters are handled by the following office(s):
PROBATE COURT
201 West Main St, Troy, OH 45373
(937) 440-6015
Public Safety & Arrests
Arrest records, inmate search, and law enforcement services are handled by the following office(s):
SHERIFF
201 West Main St, Troy, OH 45373
(937) 440-6085
Elections & Voting
Voter registration, polling locations, and elections information are handled by the following office(s):
BOARD OF ELECTIONS
215 West Main St, Troy, OH 45373
(937) 440-3910
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
Public Health
510 West Water St, Troy, OH 45373
(937) 573-3500
Job and Family Services
510 West Water St, Troy, OH 45373
(937) 440-3475
Public Health Information
PUBLIC HEALTH
Office: Miami County Public Health – confirm current contact via miamicountyohio.gov.
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