Warren County is named for Joseph Warren, who was an officer during the American Revolutionary War.
Surrounding County Courthouses:
N – Montgomery County and Greene County
E – Clinton County
S – Clermont County and Hamilton County
W – Butler County
Created: May 1, 1803 
County Seat:
Lebanon 1805 – present
County Justice Center – Lebanon
Location: 500 Justice Drive / Memorial Drive
Built: 1977 – 1979
Style: Modern
Architect: A C Voorhis & Associates
Contractor: A Benzing & Sons, Inc.
Description: The building faces northwest and is a one story red colored brick, concrete and glass structure. The building is located on landscaped grounds to the southeast of the center of Lebanon. The northwest front has a high porch supported by pillars and two columns with a recessed entrance. The windows are recessed. The roof is sloped. The building houses the County Court of Common Pleas – General and Domestic Relations Divisions.
County Juvenile Court Justice Center – Lebanon
Location: 900 Memorial Drive
Built: 1994 – 1996
Style: Modern
Architect: Unknown
Contractor: Unknown
Description: The building faces south and is a two story red colored brick and glass structure. The building is located on landscaped grounds to the southeast of the center of Lebanon. The south front has four recessed openings on the first story with small square windows on the second story. The first story is dark colored red colored brick and the upper part of the building is light colored red colored brick. The roof is sloped. The building houses the County Court of Common Pleas – Juvenile and Probate Divisions.
See: Ohio Court of Appeals – Middletown ( 12th Appellate District )
County Administration Building – Lebanon
Location: 406 Justice Drive / Memorial Drive
Built: 2000 – 2001
Style: Modern
Architect: Architects Associated, Inc. of Dayton
Contractor: Duggan & Meyers Construction of Cincinnati
Description: The building faces south and is a three story red colored brick, concrete and glass structure. The building is located on landscaped grounds to the southeast of the center of Lebanon. The south front has a large portico with six columns rising to a pediment at the roof line. The east and west wings project from the main building. Above the portico is a square cupola with dome. The roof is sloped.
County Courthouse – Lebanon
Location: 320 East Silver Street / North East Street
Built: 1834 – 1836
Style: Classical Revival
Architect: Ebed Stowell and Meeker L Morton
Contractor: Ebed Stowell and Meeker L Morton
Description: The building faces south and is a two story red colored brick and stone structure. The rectangular shaped building is located on landscaped grounds in the center of Lebanon. The south front has a small portico with pediment at the second story. Above are three arched windows the east and west corners project from the maion building The first story has stone facing and stone trim at the south front. On the roof is a large base with octagonal cupola. During construction, the supervisor was John E Dey. Isaac Bogart was awarded the painting contract and Joel Hammel supplied the lime for construction. The building was remodeled in 1894 with the addition of the north section. The architect was Williams & Bnyden of Drayton and the contractor was William B Roof. In 1999, the building was refurbished.
History: The county was created in 1803 and Lebanon was selected as the county seat in 1805. The first courthouse was a log structure known as the Black Horse Tavern built by Ichabod Corwin in 1803 on the east side of Broadway. The second courthouse was designed by Matthias Corwin, William James and Robert Benham and built by Samuel McCray in 1805 to 1806 on the town square on Broadway at a cost of $1450. The second courthouse was built in 1835 on Silver Street. The building was later destroyed by fire in 1874. The third and present courthouse was constructed in 1835 to 1836 at a cost of #25,000. The County Justice Center was constructed in 1977 to 1979. The County Juvenile Court Justice Center was constructed in 1994 to 1996.
County Justice Center – Lebanon
County Juvenile Court Justice Center – Lebanon
County Administration Building – Lebanon
County Courthouse – Lebanon
Photos taken 2011 and 2012