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Ohio · Cincinnati Metro North · #313 Most Populous County in the US
Warren County, Ohio
Mason, Lebanon, and Cincinnati's most prosperous northern suburbs - Kings Island theme park, some of Ohio's highest-ranked school districts, and explosive growth driven by the I-71 corridor. Warren County has been one of Ohio's fastest-growing counties for three consecutive decades. Property tax, courts, public records, probate, and senior services for Warren County residents.
Affiliate disclosure: This page contains affiliate links. We may earn a commission if you use them, at no extra cost to you. Our editorial recommendations are independent of these relationships.
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Office: Warren County Emergency Management Agency – confirm current phone via wcem.org.
911/Communications: Warren County Communications Center – 520 Justice Drive, Lebanon, OH 45036 | (513) 695-1715.
Notes: For an active emergency, call 911.
Roads & Utilities
ROADS & TRANSPORTATION
Roads: I-71 and US-42/22 serve Lebanon, the county seat, in southwest Ohio
Transit: No dedicated county-wide public transit system was found in this search – confirm directly with the county or your city
Notes: Warren County, established May 1, 1803 from Hamilton County, is named for Dr. Joseph Warren, the Revolutionary War hero who sent Paul Revere and William Dawes on their famous rides and died at the Battle of Bunker Hill. Warren County is one of Ohio’s most affluent counties, with the second-highest median income of the state’s 88 counties.
Business & Permits
BUILDING & PERMITS
Office: Warren County Building/Permits – confirm current contact via co.warren.oh.us.
Notes: Warren County is genuinely home to Kings Island, one of the Midwest’s largest and best-known amusement parks. The idea for the park traces to 1964, when a major flood damaged Cincinnati’s historic Coney Island; the Wachs family sold the park to Taft Broadcasting Company in July 1969, which purchased 1,600 acres in Warren County. Kings Island opened April 29, 1972, and quickly gained national attention when two of the era’s most popular TV sitcoms – “The Partridge Family” (1972) and “The Brady Bunch” (1973) – filmed episodes on-site. Today the 364-acre park features over 80 rides and attractions, including “The Beast,” still recognized as the world’s longest wooden roller coaster, plus the Soak City water park. Kings Island remains a major economic driver, cited as one of the top 10 employers in Warren County with roughly 1,250 full-time-equivalent positions, and construction of I-71’s Exit 24 (completed as a full interchange in 2019, a $50 million investment) was directly tied to the park’s development.
Veterans Services
VETERANS SERVICES
Office: Warren County Veterans Service Commission – 320 E. Silver Street, Lebanon, OH 45036; Board meets 1st and 3rd Wednesday of the month at 8 AM.
State: Ohio Department of Veterans Services – dvs.ohio.gov
Libraries
LIBRARIES
System: Warren County has multiple independent library systems: Lebanon Public Library, 101 S. Broadway, Lebanon, OH 45036 | (513) 932-2665; Franklin Public Library, 44 E. 4th St., Franklin, OH 45005 | (937) 746-2665.
Parks & Recreation
PARKS & RECREATION
Key Assets: Kings Island (amusement and water park), the LM&M Railroad (a scenic tourist rail line running 16 miles between Lebanon, Mason, and Monroe), and the Warren County Historical Society in Lebanon are the county’s signature attractions.
Notes: The genuine Kings Island heritage – a nationally significant amusement park with the world’s longest wooden roller coaster – is a distinctive, checkable local fact.
GIS & Maps
GIS & MAPS
Appraisal/Parcel Search: Warren County Auditor – confirm current phone via co.warren.oh.us.
Animal Services
ANIMAL SERVICES
Nonprofit/Shelter: Humane Association of Warren County Animal Shelter and Adoption Center – 230 Cook Rd, Lebanon, OH 45036 | (513) 695-1176 | Hours: Mon-Sat 11 AM-6 PM; the county’s only animal shelter and adoption center, founded 1973, “no-kill” philosophy; partners with the Warren County Dog Warden’s Office to house stray dogs during the required 72-hour holding period.
Environmental & Waste
ENVIRONMENTAL / WASTE MANAGEMENT
Office: Warren County Solid Waste – confirm current contact via co.warren.oh.us.
NOTES: Warren County is the sixth county in the final batch (Trumbull, Tuscarawas, Union, Van Wert, Vinton, Warren, Washington, Wayne, Williams, Wood, Wyandot) of the Ohio v2 redo. The genuine Kings Island heritage is a distinctive, nationally recognizable local fact. 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 Warren County
Heritage | Lebanon’s historic Golden Lamb Inn, operating continuously since 1803, is Ohio’s oldest inn and has hosted numerous U.S. presidents, and the county’s Shaker Village at Union Village once housed one of the largest Shaker communities in the country before its 19th-century decline; Warren County has transformed from largely rural farmland into one of Ohio’s fastest-growing suburban counties as Cincinnati and Dayton’s metro areas have expanded Outdoors | Kings Island, one of the largest amusement and water parks in the Midwest, anchors much of the county’s tourism economy; the Little Miami Scenic Trail offers extensive biking and hiking along the historic rail corridor Notable | Kings Island draws millions of visitors annually, and Warren County consistently ranks among the fastest-growing and wealthiest counties in Ohio, driven by its position between two major metro areas Library | Lebanon Public Library and libraries across Warren County serve the region’s rapidly growing suburban and remaining rural communities
All Services
Browse every category and topic available for this county.
Marriage licenses, divorce records, and birth & death certificates are handled by the following office(s):
PROBATE COURT
500 Justice Dr, Lebanon, OH 45036
(513) 695-1310
Genealogy
County-level record sources
Warren County Probate Court, Lebanon (probate/estate case files – see Probate section above).
Local societies
No dedicated Warren 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
Warren County Probate/Juvenile Court 500 Justice Drive, Lebanon, OH 45036 (513) 695-1180 Warren County is in southwestern Ohio, seated in Lebanon – one of Ohio’s fastest-growing counties.
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 Warren 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
500 Justice Dr, Lebanon, OH 45036
(513) 695-1310
Public Safety & Arrests
Arrest records, inmate search, and law enforcement services are handled by the following office(s):
SHERIFF
550 Justice Dr, Lebanon, OH 45036
(513) 695-1280
Elections & Voting
Voter registration, polling locations, and elections information are handled by the following office(s):
BOARD OF ELECTIONS
500 Justice Dr, Lebanon, OH 45036
(513) 695-1358
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
Combined Health District
416 South East St, Lebanon, OH 45036
(513) 695-1220
Job and Family Services
500 Justice Dr, Lebanon, OH 45036
(513) 695-1420
Public Health Information
PUBLIC HEALTH
Office: Warren County Combined Health District – confirm current contact via co.warren.oh.us.
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Editorial Trust
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Reviewed by CountyOffices Editorial Team
Last verified June 2026
County Facts
County Seat: Lebanon
Population: 246,000
Area: 404 mi²
Tier: 2
Inmate Services
Care Packages
Send care packages to inmates in Warren County facilities via Amazon.
