Area guidesFranklin County

Union

Union is the county seat of Franklin County. The city says it was established in 1825 as the county seat.

See my numbers Ask me about Union

Median sale price

$252K

3 months ending Aug 2026

Compared with last year

-0.1%

median price

Median days on market

was 42 a year ago

Homes sold in August

was 54 a year ago

The market right now

Union home values and how fast homes sell.

Slower34 days, median

SlowerFaster

Homes here are taking longer to sell. Pricing from the closest recent sales matters more than usual.

I'll show you the recent sales closest to your home and what you could walk away with, in writing.

Figures: Redfin, 3 months ending Aug 2026, retrieved September 2026. Medians describe the whole market, not any one home. They are not a prediction.

Compare nearbyWashington$280K Pacific$298K Sullivan$180K High Ridge$227K

Before you buy or sell

Worth knowing in Union.

Rules change. Confirm with the city before you rely on them.

Inspection at sale

No residential occupancy permit or sale inspection is listed on the city's Engineering/Building permits and forms pages. The Missourian reported in late 2025 that the city was studying expanded occupancy permit rules, so confirm the current rule with the Building Department at 636-583-1805.

The Missourian

The city requires a permit for plumbing, electrical and structural building work. Painting and replacing flooring are listed as not needing a permit.

City website

The city provides water, sewer and trash service.

City website

For addresses outside city limits, Franklin County regulates individual on-site sewage (septic) systems under its On-Site Sewage Disposal Systems Ordinance. New systems need a percolation test or soil evaluation and a certified, registered installer.

Franklin County

What it's built like, and how you get around.

Getting around

US Route 50 runs through the city and meets Route 47 at a junction in Union.
Wikipedia
Union sits on the northwest side of the Bourbeuse River.
Wikipedia

Parks and places.

Scroll sideways

Veterans Memorial Park

43.8-acre city park at 600 Progress Parkway with a splash park, a 0.9-mile walking trail, baseball/softball fields and soccer fields.

City website

Clearview Park

22.82-acre city park at 1051 Clearview Drive with views of the Bourbeuse River and a natural walking trail through forest.

City website

Clark-Vitt Memorial Park

13.8-acre city park at 401 Clark Avenue with asphalt and natural walking trails and an 11-hole disc golf course.

City website

City Lake

Park at 502 Clark Avenue with a stocked 4-acre lake, an accessible floating dock and a lit 0.3-mile loop trail.

City website

City Park

6.1-acre park at 500 West Park Avenue with pavilions, a playground, a lit walking trail, three baseball fields and basketball and tennis courts.

City website

K-9 -n- Kiddos Park

2.23-acre park at 226 North Christina Avenue that the city describes as Franklin County's first dog park, with separate fenced areas for large and small dogs.

City website

Schools

Public school districts serving Union.

Union R-XI School District

District lines don't always follow city lines. Confirm the district for a specific address with the district itself. For school data, see the state's Missouri school report cards.

Questions about Union.

Ask me a question

Official Union website

What is the median home price in Union, MO in 2026?

The median sale price in Union was $252K for the three months ending Aug 2026, down 0.1% from a year earlier. Homes sold in a median of 34 days. Source: Redfin MLS-based data, retrieved September 2026.

Which public school district serves Union?

Union addresses are served by Union R-XI School District. District lines don't always follow city lines, so confirm the district for a specific address before you make an offer.