Adams County Illinois Fairgrounds Events

The Adams County Fairgrounds is located at 2010 East 1250th Street, Mendon, Illinois 62351, southwest of Quincy. The property is best known for the annual Adams County Fair, a multiday agricultural event that draws exhibitors, families, vendors, and visitors from the Illinois–Missouri region.

The Adams County Fair Association organizes the annual fair and oversees fair-related activities. The grounds also have a heritage component associated with the Adams County Olde Tyme Association, which preserves local agricultural history and traditional demonstrations.

Confirmed and recurring events

The 2026 Adams County Fair ran from July 29 through August 4, 2026. As of October 28, 2026, the detailed 2027 fair schedule and dates were not confirmed in the available fair information. Visitors should avoid relying on dates from previous years when arranging travel.

The fairgrounds also host community and heritage activities beyond fair week. The Olde Tyme Association organizes activities connected with the historic buildings and traditional demonstrations, and the site may be used for flea markets, craft shows, and other public gatherings. A Spring Flea Market and Craft Show is listed for May 15–16, 2027.

For other upcoming events, the fair’s current calendar and the organizers’ announcements are the best sources. Not every event held elsewhere in Adams County takes place at the Mendon fairgrounds.

Private rentals and community uses

The fairgrounds are used for agricultural exhibitions, heritage activities, community gatherings, and approved outside events. Anyone planning a reunion, vendor market, educational gathering, or other private function should ask the fair association about space availability, rental terms, setup times, insurance, and permitted activities.

The Adams County Fair Itself

When Is the Adams County Fair?

The Adams County Fair traditionally takes place in late July or early August. The 2026 fair was held July 29–August 4. Exact dates for the 2027 Adams County Fair should be confirmed when the association publishes its new schedule.

Livestock shows and competitive exhibits

Agriculture and youth development are central to the fair. The 2026 schedule included 4-H general exhibits, equine judging, dairy cattle activities, rabbit judging, sheep arrivals, and swine check-in and weighing. The Mississippi Valley Holstein Club also held a show during fair week.

Depending on the department and year’s fair book, participants may be able to enter:

• Beef and dairy cattle, sheep, swine, goats, and other livestock classes
• Equine projects and horse-show activities
• Rabbits and other small-animal exhibits
• Photography, crafts, food preparation, and home economics
• Educational projects and other open-class entries

The current fair book determines which classes are offered, how entries are submitted, and when animals and exhibits must arrive. Exhibitors should not assume that every species or category is offered each year.

Carnival, grandstand, and family entertainment

The 2026 schedule included a carnival, pageants, a peewee horse show, pony pull, and figure-eight racing. A family entertainment area also hosted circus performances. These activities illustrate the fair’s mix of agricultural competitions and evening entertainment.

The carnival’s 2027 ride count, wristband offers, operating hours, and prices have not been confirmed. Specific grandstand acts, concerts, demolition derbies, and other attractions should be checked against the new schedule rather than assumed to return.

Food, admission, and parking

Food stands and fair vendors form part of the visitor experience, but current menus, nonprofit concession operators, and any signature local food traditions were not confirmed. Admission, parking fees, season passes, and discounts for children or seniors should likewise be checked for the year of the visit.

Facilities and Grounds

Livestock and exhibition areas

The grounds include spaces used for livestock judging and agricultural exhibits, including a show barn and a rabbit barn referenced in the 2026 schedule. Horse-related activities take place in a designated horse arena. These areas support animal check-in, judging, and youth competitions during fair week.

The number of permanent buildings, total acreage, grandstand capacity, and detailed facility dimensions were not confirmed in the available information. Anyone planning an event that needs indoor space, livestock pens, or an arena should contact the association directly.

Parking and camping

The fairgrounds are in a rural area outside Mendon, so visitors should follow the event’s own parking instructions rather than assume that all adjoining fields or access roads are open for public parking. Livestock exhibitors should ask about trailer access and designated unloading areas.

Camping is associated with fair week and some other events at the property. Visitors should confirm whether camping is available for their dates, what facilities are provided, and whether reservations or separate fees apply. Full hookups, accessible restroom details, first-aid services, and on-site ATM availability were not confirmed.

Accessibility and visitor facilities

Visitors who need accessible parking, accessible restrooms, step-free building access, or assistance with mobility should ask the fair association about arrangements before arrival. Accessibility features may differ between buildings and outdoor event areas.

Adams County Illinois Fairgrounds Events connect residents and visitors with local fairs, agricultural exhibitions, livestock activities, and community gatherings in western Illinois. Readers exploring fairground events beyond Illinois can also discover Washington County Idaho Fairgrounds Events, which relate to agricultural traditions and community celebrations in western Idaho.

Vendor and Exhibitor Information

Applying for a commercial booth

Vendors who want to sell products, crafts, or food during the Adams County Fair should contact the Adams County Fair Association for the current application and fee schedule. Before applying, confirm booth size, available utilities, setup hours, insurance requirements, food permits, and any rules governing merchandise.

Craft markets and other events held outside fair week may use different organizers and applications. Confirm which group is managing the specific event before paying a booth fee.

Entering competitive exhibits

The fair’s premium book and department rules explain the classes, deadlines, judging procedures, and any prizes or premiums available. In 2026, livestock entries were due by 5 p.m. on Friday, July 24, while several open-class departments accepted entries later during fair week. These were 2026 deadlines, not the schedule for 2027.

Livestock exhibitors should check animal eligibility, stall or pen fees, health requirements, and check-in times. The fair association’s rules state that superintendents assign stalls and that exhibitors are charged for the pens or stalls they use.

Contact information

For fair dates, vendor applications, livestock entries, and facility questions, contact:

• Organization: Adams County Fair Association
• Address: 2010 East 1250th Street, Mendon, IL 62351
• Phone: 217-936-2230
• Email: [email protected]

Getting to Adams County Fairgrounds

Driving directions

From Quincy: Travel south toward Mendon using the appropriate local roads and the route recommended by current navigation directions. Quincy is the principal nearby city and a useful starting point for visitors arriving from outside the county.

From Mendon: Follow local roads toward East 1250th Street and the fairgrounds entrance.

From western Illinois and Missouri: Visitors approaching the Quincy area can use the regional highway network to reach Quincy, then continue toward Mendon. Check the final rural-road approach before leaving, particularly when towing a trailer.

The official fairground address is 2010 East 1250th Street, Mendon, Illinois 62351. Public transportation and dedicated fair-week shuttles were not confirmed. Rideshare services may be limited in rural Mendon, so visitors attending evening entertainment should plan their return trip in advance.

4-H and FFA at Adams County Fairgrounds

Youth projects and University of Illinois Extension

The fair’s 4-H general exhibits and livestock activities give young people opportunities to present work completed throughout the year. Projects may involve animal care, agriculture, equine activities, crafts, photography, food preparation, and other educational areas, depending on the fair book.

University of Illinois Extension supports 4-H programming in Adams County. Families should contact the local Extension office for enrollment requirements, project information, and current fair deadlines. A verified current count of active Adams County 4-H clubs was not available.

Junior livestock and auction participation

Livestock projects teach young exhibitors animal care, preparation, recordkeeping, and showmanship. Where a junior livestock auction or market-animal sale is included in the year’s program, the fair book explains eligible classes, sale times, and buyer procedures.

Potential buyers should ask the fair association how bidding works, whether there are minimum purchase requirements, and what happens to proceeds. The 2027 sale arrangements should be confirmed rather than inferred from previous fair schedules.

Local FFA involvement and participating school chapters should also be confirmed with the fair organizers or Extension, as a current list was not verified.

Special Events Beyond the Annual Fair

The Adams County Fairgrounds have a broader community and heritage role beyond the main summer fair.

The Adams County Olde Tyme Association maintains a heritage area associated with traditional rural life. The historic site includes the Lewis Round Barn and other heritage structures, with demonstrations connected to traditional skills such as blacksmithing, log cutting, and wheat threshing advertised as part of its activities.

A Spring Flea Market and Craft Show is scheduled for May 15–16, 2027. Other markets, craft shows, and public events may be added throughout the year. Visitors interested in gun shows, swap meets, tractor events, or concerts should confirm the exact venue and date, as event listings can refer to other locations.

History of Adams County Fairgrounds

The Adams County Fair traces its roots to 1941, when it began as a one-day fall festival and livestock show on Mendon’s town square. The event later expanded beyond the original town-square gathering. Land purchases beginning in 1950 helped establish the current fairgrounds location.

Over time, the fair developed into a multiday summer event combining livestock shows, youth competitions, carnival attractions, pageants, and grandstand entertainment. The fair continues to serve agricultural families while attracting visitors from the wider Tri-State region.

The heritage area adds another dimension to the property. Buildings and demonstrations preserved through the Adams County Olde Tyme Association connect visitors with older agricultural and rural trades. The Heritage Farms Pavilion was added as a permanent landmark associated with Adams County’s bicentennial in 2025.

A verified complete record of historical attendance, past cancellations, and every major facility expansion was not available. Specific claims about record crowds or cancellations should be checked against association archives rather than published as fact.

Frequently Asked Questions

When is the Adams County Fair in Illinois in 2026–2027?

The 2026 Adams County Fair ran from July 29 through August 4. Exact dates for the 2027 fair were not confirmed in the available schedule.

What time does Adams County Fairgrounds open?

Opening times vary by day and activity. In the 2026 schedule, some activities began in the morning, while the carnival opened at 5 p.m. on listed days. Check the current program for exact times.

Is there camping at Adams County Fairgrounds?

Camping is associated with fair week and some other events. Confirm availability, fees, facilities, and any reservation requirements with the fair association before traveling.

How do I enter livestock in the Adams County Fair?

Contact the Adams County Fair Association and review the current premium book. Confirm deadlines, animal eligibility, health requirements, check-in times, and stall or pen fees.

Are dogs allowed at Adams County Fairgrounds?

A current general pet policy was not confirmed. Ask the fair association about event-specific rules before bringing a dog. Service animals are subject to applicable access requirements.

Where do I park at Adams County Fairgrounds?

The fairgrounds are located at 2010 East 1250th Street in Mendon. Follow the event’s parking instructions and ask about accessible spaces, livestock trailers, and overflow parking.

Who do I contact to rent Adams County Fairgrounds?

Contact the Adams County Fair Association at 217-936-2230 or [email protected] to ask about facility availability, rental fees, and event requirements.

How much does it cost to get into the Adams County Fair?

Admission prices and parking fees for 2027 were not confirmed. Check the current fair announcement for gate admission, carnival pricing, rodeo or grandstand tickets, and discounts.

Does Adams County Fair have carnival rides?

Yes, the 2026 schedule listed a carnival. The 2027 carnival provider, operating dates, ride count, and wristband prices have not been confirmed.

Are there events at the fairgrounds outside fair week?

Yes. The grounds are also associated with heritage activities, flea markets, craft shows, and community gatherings. Check the current event calendar for confirmed dates and venues.