Housing in Union, IL
Home values, rent, ownership rates, and housing market data
Housing Market Snapshot
Source: Redfin — January 2026Median Sale Price
$230,000
Median List Price
N/A
Price Per Sq Ft
$100
Days on Market
6
Active Inventory
2
Months of Supply
2.0
Seller's market
Zillow Home Value
$411,207
ZHVI — January 2026
Price Trends
Source: RedfinMarket Competitiveness
Source: RedfinSold Above List
100.0%
Off Market in 2 Weeks
0.0%
Sale-to-List Ratio
102.2%
Seller's market
Market Activity
Source: RedfinHomes Sold
1
Pending Sales
1
Price Per Square Foot
Source: RedfinMedian Sale $/SF
$100
Union vs Similar Cities
Source: Census ACS / Redfin (2023)Compared to cities with under 10,000 residents. Union is highlighted.
Median Home Value
Median Price Per Sq Ft
Census Housing Data
Source: U.S. Census Bureau ACS (2023)Median Home Value
$224,600
Median Rent
N/A
Total Housing Units
313
Vacancy Rate
4.5%
Owner Occupied
89.6%
Renter Occupied
10.4%
Median Property Tax
$4,787
per year
Monthly Cost (w/ Mortgage)
$1,224
Housing Types
The current median sale price in Union, IL is $230,000 according to Redfin data. Homes spend a median of 6 days on the market. 100.0% of homes sold above asking price. The market has 2.0 months of supply. The median price per square foot is $100. About 89.6% of housing units are owner-occupied. The median year homes were built is 1956. There are 313 total housing units.