Mayor's Office

Mayor Senter

As Mayor of the City of Plymouth, I want to welcome you to our hometown page. I am a homegrown Hoosier; I was born in Indianapolis, Indiana and graduated from Vincennes University in 1976 with a degree in Criminal Justice. I served as a trooper and detective with the Indiana State Police from 1979 through 2007.  During that time, I married my wife Leanne in 1990 and we have two amazing children, Riley and Megan. I have had the honor of serving as the Mayor of the City of Plymouth since 2008 and I look forward to continuing to support and be the voice for the people of this city!

Here in Plymouth, we have the peace of mind of living in a small, thriving community with the benefits of a big city Where Community & Possibilities Connect!  This year has been difficult for everyone on a global scale. We have all been effected by the COVID-19 pandemic in some way. The best qualities in the citizens of Plymouth have shined bright this year: resilience, compassion, determination, and most importantly, a focus on our community. 

The City of Plymouth is located on the banks of the Mighty Yellow River in north-central Indiana. Plymouth is the county seat for Marshall County and has a population of over 10,000 residents. Plymouth was incorporated as a city on April 25, 1873. US 30 and US 31, both 4-lane divided highways, intersect near Plymouth making our community the Crossroads of Northern Indiana.

Plymouth's Greenways Trail opened in 2007. The trail continues to be developed and winds through the city. Phase 2 of the trail opened in the Summer of 2019 and Phase 3 is currently being designed.

The ribbon was cut for a new downtown park, River Park Square, in 2014 on East Garro Street. The park hosts several popular events throughout the year:

  • Farmer's Market every Saturday from May through October
  • Mayor’s Month of Music every Friday in August.  Bands from all over the Midwest attract hundreds of Marshall County residents to a festival atmosphere.
  • Summer Sippin' Brew Fest, a fundraising event for the park department's all-inclusive: Freedom Park
  • The 1st weekend in June you will find the quaint Yellow River Festival, an old-timey event to reflect what the region was like 140 years ago
  • In September, join us for the annual Latino Festival, which celebrates the Latino community in Marshall County with a main focus on culture.

Phase 2 of River Park Square is slated to begin in 2021 and includes the addition of an ice skating rink, pavilion, natural playground, and an Armed Forces plaza. Click here to see the schematic design for Phase 2 of River Park Square and Phase 3 of the Greenway Trail.

On Labor Day weekend, Plymouth hosts the Marshall County Blueberry Festival, the State of Indiana's largest four-day festival. Approximately 300,000 people visit the festival every year!

Encore Performance Arts hosts the "Music In The Park" series throughout the summer along with several other entertainment venues during the year. You can also visit the Heartland Artists' Gallery at 101 N. Michigan Street.

The last several years the downtown area has flourished with many summer activities such as the P-Town Cruz’n Car Show and the Heartland Artists’ Art in the Street Festival in June.  July brings the annual downtown Tractor Show, another event with great music and fantastic food.

When you get a chance, take a road trip to our beautiful city nestled in the heartland of Indiana and America.

Please feel free to contact me with any questions or concerns you may have. You can send me an email at or call the office at (574) 936-6717.

-Mayor Mark Senter