Union County-Marysville

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With plentiful job opportunities, close-knit neighborhoods, excellent school systems, and an outstanding quality of life, there is no wonder why Union County is one of the fastest growing counties in Ohio.

Arial view of Marysville High School


Union County was created by an act of the Ohio State Legislature on April 1, 1820. Marysville was named county seat on May 15, 1821. ​

Topography & Geography
Union County encompasses 434 square miles of relatively flat land in the southern and eastern sections of the county to gently rolling topography in the western and northern sections of the county.

Union County was home to many industries in its original days from hotels, tanneries, distilleries, breweries, mills, asheries, manufacturers, energy production, banks, grocers, and retailers, among others. Marysville's industrial roots can be traced back to many early companies. Among those were the Marysville Pearlash Factory, an ashery founded in 1848, which by 1874 was the largest in the United States. The first steam-grist mill was erected in 1856 by Saxton and Casil.

Vintage car at Der Dutchman

Total Population




Square Miles


Housing Units


Average people per household


Population per square mile

Uptown Marysville festival called  FestiFair
Population: 27,157


The City of Marysville, which serves as the county seat of Union County, is a community rich with small town charm while also boasting a vibrant economy, well-planned neighborhoods, strategic community visioning, and community pride. Marysville has been recognized by publications for being affordable, safe, and one of the best communities for job seekers in Ohio.

Population: 4,330

Plain City

Nestled in the heart of Ohio just minutes from Columbus, Plain City radiates a small-town charm that captivates visitors from the moment they arrive. Plain City is more than just a place to live - it is a place to forge lifelong connections, nurture dreams, and build a fulfilling life.

Plain City Clock Towner
Richwood Lake
Population: 2,397


Richwood is proud of its agricultural heritage and is known as a close-knit community. Throughout the year, Richwood is known for hosting several charming community fairs and festivals. In the midst of Richwood’s historic downtown is Richwood Park, a beautiful 29-acre park that offers fishing, swimming, kayak rentals, picnic shelters, hiking trails, a playground, horseshoes, basketball, and baseball/softball.

Population: 48,998


Dublin is characterized by the outstanding amenities and quality of life enjoyed by its residents. Through its well-managed growth, Dublin has been able to preserve its rural heritage in its early nineteenth century architecture, stone fences and vast open space, while also ensuring its residents ample shopping, entertainment and cultural activities.

Bridge Park Dublin


adjacent counties

Marion County (northeast)
Delaware County (east)
Franklin County (southeast)
Madison County (south)
Champaign County (southwest)
Logan County (west)
Hardin County (northwest)

public libraries

Marysville Public Library
Marysville Public Library - Raymond
Plain City Public Library
Richwood - North Union Public Library   


Population (2018): 57,837
Annual Growth Rate: 2.1%
Median Age: 38.1
Registered Voters: 38,670
Number of Veterans: 3,288
Cost of Living Index: 85.2/100
Median Home Value: $208,300
Median Real Estate Tax: $2,898

community amenities

Fairgrounds: 2
BMX Track: 1
Golf Courses: 8
Hotels: 7
Indoor Pools (YMCA): 2
Museums & Galleries: 4
Performing Art Centers: 1
Outdoor Public Pools: 3


White: 90.4%
Asian: 3.1%
Black: 2.4%
Hotels: 7
Two or more races: 1.8%
Hispanic or Latino: 1.6%
Other: 0.5%
Outdoor Public Pools: 3
# Foreign-born residents: 1,886​

Nature Preserves

Big Darby Headwaters
Glacier Ridge Metro Park
Milford Center Prairie
McIvor Woods

see full list
business profile

# Businesses: 3,936
# Female-owned: 1,247
# Minority-owned: 114

television &

WQTT 96.7 FM & 1270 AM


Marysville Journal Tribune
Richwood Gazette
The Madison Press


Average Elevation: 984'
Average Rainfall: 39"
Average Snowfall: 22"
January Temperature (Avg.): 24°
July Temperature (Avg.): 73°
Average Sunny Days: 175
Growing Season (Weeks): 24

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City of Columbus skyline