Jay County
countyJay County, located in eastern Indiana bordering Ohio, is a predominantly rural county characterized by its agricultural landscape and small-town charm. As of 2024, the population is estimated to be around 20,164. The county seat is Portland, which is also the largest city in the county. Jay County offers a blend of community values and historical significance, making it a distinctive part of the state. The economy of Jay County is diverse, with manufacturing, construction, and healthcare as key sectors. Major employers include companies in the automotive and glass industries. The county government and school corporation also provide significant employment opportunities. Jay County is actively working to attract new businesses and investments to bolster its economic foundation. Jay County is the only Jay County in the United States, named for John Jay, the first Chief Justice of the United States. The county is home to the National Center for Great Lakes Native American Culture and the Loblolly Marsh Nature Preserve, offering unique cultural and recreational experiences. The county's history is intertwined with the Wabash River and the legacy of Gene Stratton-Porter, contributing to its rich heritage.
Jay County, Indiana
- Classification
- County
- FIPS Code
- 18075
- Country
- United States
- County
- Jay County
- Region
- East Central Indiana
- Elevation
- 1,121 ft
- Total Area
- 384.08 sq mi
- Land Area
- 383.9 sq mi
- Water Area
- 0.18 sq mi
- Latitude
- 40.43
- Longitude
- -85.01
- Climate
- Humid continental climate with cold winters and hot summers
- Notable Features
- Salamonie River · Loblolly Marsh Nature Preserve
- Neighboring Areas
- Adams County · Wells County · Blackford County · Delaware County · Randolph County · Mercer County, Ohio · Darke County, Ohio
- Population (2020)
- 20,478
- Est. Population (2024)
- 20,164
- Median Age
- 39.6
- Median Income
- $54,114
- Poverty Rate
- 13.2%
- Owner-Occupied
- 78%
- Racial & Ethnic Composition
- 93.0% White, 4.5% Hispanic, 1.8% Two or More Races
- Government Type
- County Commissioners and County Council
- Governing Body
- Board of Commissioners and County Council
- Body Size
- 3 members
- School District
- Jay School Corporation











- Unemployment Rate
- 4.0%
- Employment Sectors
- Manufacturing · Construction · Healthcare · Automotive · Glass Production
- Major Employers
- FCC · Ardagh Glass · MSSL · Moser Engineering
- School Districts
- Jay School Corporation
- Colleges & Universities
- Ivy Tech Community College of Indiana · Indiana Wesleyan University
- Transportation
- U.S. Route 27 · State Road 67
- Major Facilities
- Jay County Courthouse · Jay County Hospital
- Outdoor Access
- Yes
- Major Recreation Areas
- Loblolly Marsh Nature Preserve · Hudson Family Park
- Parks & Trails
- Loblolly Marsh Trails · Veronica's Trail
- Founded
- 1836
- Named After
- John Jay, first Chief Justice of the United States
- Historical Significance
- Named after John Jay, the first Chief Justice, and significant for its agricultural heritage and role in Indiana's early development
- Key Events
- Creation of the county in 1836 · Establishment of Portland as the county seat · Discovery of natural gas in 1887
