Judge Mary Ellen Diekhoff: Professional Background and Legal Expertise

Monroe County Circuit Court (IN), Department Division V

Biography

Hon. Mary Ellen Diekhoff is a judge for the Monroe County Circuit Court in Indiana. She was elected to the bench in 2004.

During her judicial tenure, Diekhoff has presided over a criminal docket, as well as the Drug Treatment Court and Re-Entry Court in Monroe County.

Prior to joining the bench, she worked for sixteen years as a deputy prosecutor with the Monroe County Prosecutor’s Office (1989 to 2004) and was an associate at Harrell, Clendening & Coyne. Diekhoff also served as a judge pro tempore for the Monroe County Circuit Court and was an adjunct professor in the Department of Criminal Justice at Indiana University Bloomington.

She received a B.A. in sociology from Valparaiso University. Diekhoff went on to complete a J.D. at Indiana University Maurer School of Law in 1986. She was admitted to practice in Indiana (1986) and the United States District Court for the Northern and Southern Districts of Indiana (1986).

Diekhoff served on the Indiana Public Defender Commission and chaired the District 10 Pro Bono Committee and the Court Alcohol & Drug Program Advisory Committee.

She was raised in Gary, Indiana, by a single mother. Diekhoff and her husband, Mike, have one daughter, Caitlin, and three rescue dogs, Hershey, Blake, and Emmett. Outside of the bench, she enjoys reading, walking, and attending her daughter’s musical performances.

Diekhoff is registered as a Democrat.

Recent Cases by Hon. Mary Ellen Diekhoff

In Re: Tax Sale

On September 18, 2026 a ts - tax sale case was filed in the jurisdiction of Monroe County. Judge Mary Ellen Diekhoff presiding.

17 Files

Filed

Sep 18, 2026

Status

10/08/2026 , Decided

Judge

Hon. Mary Ellen Diekhoff 👉 Discover key insights by exploring more analytics for Mary Ellen Diekhoff

Court

Monroe County

County

Monroe County, IN

Case #

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Court Category

TS - Tax Sale

Practice Area

Tax

Matter Type

General Tax

Case Last Refreshed

Oct 27, 2026

Erica Boomsma v. Bloomington Housing Authority

On September 11, 2026 a ct - civil tort case was filed in the jurisdiction of Monroe County. Judge Mary Ellen Diekhoff presiding.

10 Files

Filed

Sep 11, 2026

Status

Active

Judge

Hon. Mary Ellen Diekhoff 👉 Discover key insights by exploring more analytics for Mary Ellen Diekhoff

Court

Monroe County

County

Monroe County, IN

Case #

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Court Category

CT - Civil Tort

Practice Area

Torts

Matter Type

General Torts

Case Last Refreshed

Sep 20, 2026

ALAN PAUL SOLIS SALAS v. STATE OF INDIANA (BMV), Bureau Of Motor Vehicles, Monroe County Prosecutor Office

On September 2, 2026 a mi - judicial review case was filed in the jurisdiction of Monroe County. Judge Mary Ellen Diekhoff presiding.

Filed

Sep 02, 2026

Status

Active

Judge

Hon. Mary Ellen Diekhoff 👉 Discover key insights by exploring more analytics for Mary Ellen Diekhoff

Court

Monroe County

County

Monroe County, IN

Case #

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Court Category

MI - Judicial Review

Practice Area

Administrative

Matter Type

Admin Appeals

Case Last Refreshed

Oct 21, 2026

In The Monroe Circuit Court V

On April 2, 2026 cb - court business case was filed in the jurisdiction of Monroe County. Judge Mary Ellen Diekhoff presiding.

Filed

Apr 02, 2026

Status

04/02/2026 , Decided

Judge

Hon. Mary Ellen Diekhoff 👉 Discover key insights by exploring more analytics for Mary Ellen Diekhoff

Court

Monroe County

County

Monroe County, IN

Case #

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Court Category

CB - Court Business

Practice Area

Administrative

Matter Type

General Administrative

Case Last Refreshed

Apr 04, 2026

In Re: The Specialized Driving Privileges of Zachary R Todd

On October 20, 2025 a mi - miscellaneous civil case was filed in the jurisdiction of Monroe County. Judge Mary Ellen Diekhoff presiding.

Filed

Oct 20, 2025

Status

Active

Judge

Hon. Mary Ellen Diekhoff 👉 Discover key insights by exploring more analytics for Mary Ellen Diekhoff

Court

Monroe County

County

Monroe County, IN

Case #

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Court Category

MI - Miscellaneous Civil

Case Last Refreshed

Oct 24, 2025

IN RE: Specialized Driving Privileges of Dylan Morris

On March 6, 2025 a mi - miscellaneous civil case was filed in the jurisdiction of Monroe County. Judge Mary Ellen Diekhoff presiding.

Filed

Mar 06, 2025

Status

Active

Judge

Hon. Mary Ellen Diekhoff 👉 Discover key insights by exploring more analytics for Mary Ellen Diekhoff

Court

Monroe County

County

Monroe County, IN

Case #

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Court Category

MI - Miscellaneous Civil

Case Last Refreshed

Mar 07, 2025

In Re: the Guardianship of Bradford J Bomba, Sr.

On November 1, 2024 a gu - guardianship case was filed in the jurisdiction of Monroe County. Judge Mary Ellen Diekhoff presiding.

Filed

Nov 01, 2024

Status

11/04/2024 , Decided

Judge

Hon. Mary Ellen Diekhoff 👉 Discover key insights by exploring more analytics for Mary Ellen Diekhoff

Court

Monroe County

County

Monroe County, IN

Case #

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Court Category

GU - Guardianship

Practice Area

Probate

Matter Type

Guardianship,Conservatorship

Case Last Refreshed

Nov 05, 2024

Special Judge Case for QCSR Counting

On September 6, 2024 a cb - special judge (qcsr use only) case was filed in the jurisdiction of Monroe County. Judge Mary Ellen Diekhoff presiding.

Filed

Sep 06, 2024

Status

09/06/2024 , Decided

Judge

Hon. Mary Ellen Diekhoff 👉 Discover key insights by exploring more analytics for Mary Ellen Diekhoff

Court

Monroe County

County

Monroe County, IN

Case #

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Court Category

CB - Special Judge (QCSR Use Only)

Case Last Refreshed

Sep 07, 2024

IN RE: SPECIALIZED DRIVING PRIVILEGES OF STEPHEN OWINGS II

On March 15, 2024 a case was filed in the jurisdiction of Monroe County. Judge Mary Ellen Diekhoff presiding.

1 File

Filed

Mar 15, 2024

Status

Active

Judge

Hon. Mary Ellen Diekhoff 👉 Discover key insights by exploring more analytics for Mary Ellen Diekhoff

Court

Circuit

County

Monroe County, IN

Case #

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Case Last Refreshed

Mar 17, 2024

IN RE: Specialized Driving Privileges and Waiver of Reinstatement Fees for Dallas C. Duncan

On August 29, 2022 a case was filed in the jurisdiction of Monroe County. Judge Mary Ellen Diekhoff presiding.

1 File

Filed

Aug 29, 2022

Status

Relief Denied

Judge

Hon. Mary Ellen Diekhoff 👉 Discover key insights by exploring more analytics for Mary Ellen Diekhoff

Court

Monroe County

County

Monroe County, IN

Case #

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Case Last Refreshed

Sep 01, 2022

About

Mary Ellen Diekhoff
Party Affiliation Democrat	Democrat
Current Appointment Monroe County Circuit Court (IN), Department Division V	Monroe County Circuit Court (IN), Department Division V
Election/Appointment 2004 - Monroe County Circuit Court 2010 - Re-elected 2016 - Re-elected	2004 - Monroe County Circuit Court 2010 - Re-elected 2016 - Re-elected
Education J.D., Indiana University Maurer School of Law - 1986 B.A., Valparaiso University	J.D., Indiana University Maurer School of Law - 1986 B.A., Valparaiso University

Documents related to Mary Ellen Diekhoff

Court Info

Court Info
Current Court:	IN - Monroe County Circuit Court (IN)
Clerk phone:	+1 (812) 349-2615
Fax:	+1 (812) 349-2791

Career History

Career History
Role	Employer	Where
Judge	Monroe County Circuit Court	Monroe County, Indiana
Deputy Prosecutor	Monroe County Prosecutor's Office	Monroe County, Indiana
Associate	Harrell, Clendening & Coyne	Monroe County, Indiana
Judge Pro Tempore	Monroe County Circuit Court	Monroe County, Indiana