Union, IL, Real Estate

Union, Illinois, is a small village in McHenry County with a population of around 580 as of the 2020 census. Known for its quaint, rural charm, Union is home to the McHenry County Historical Society and Museum, which preserves the area’s rich history, including its agricultural roots and early settler heritage. The village is also famous for hosting the Illinois Railway Museum, one of the largest railway museums in the United States, attracting visitors with its extensive collection of historic trains and interactive exhibits. Surrounded by rolling farmland, Union offers a peaceful, small-town atmosphere with easy access to nearby urban centers like Chicago, making it a hidden gem for those seeking a blend of history and tranquility.

Union currently has 6 single family homes for sale with an average list price of $404,250 and 12 lots for sale with an average list price of $103,341.67. The average annual property tax for Union is $5,419.76.

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Schools

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Absorption Report

Using the absorption rate, we can determine how long it's taking for homes to sell and which price points are selling the fastest in Union, i.e. what's hot and what's not.

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Recent Sales

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Subdivisions

Subdivisions Median Price
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Railway Estates

Railway Estates is a single-family home community in Union, Illinois, built between 2006 and 2024 by Ryan Homes. It currently has 2 single family homes for sale with an average list price of $442,900. The homes range in size from 1,640 ft2 to 4,200 ft2. The average annual property tax for Railway Estates is $7,081.97. It is located in McHenry County. ... Read more
Median Price: $420,000

Subdivisions

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Market Trends

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Real Estate News

New Homes For Sale This Week in Union: March 6th to March 12th

New Homes For Sale This Week in Union: March 6th to March 12th - March 13, 2026

Union had only 1 new home for sale during the week of Friday, March 6 to Thursday, March 12, including and it was a single family home for sale with ... continue reading
New Homes For Sale This Week in Union: February 27th to March 5th

New Homes For Sale This Week in Union: February 27th to March 5th - March 6, 2026

Union had only 1 new home for sale during the week of Friday, February 27 to Thursday, March 5, including and it was a single family home for sale with ... continue reading
Homes Just Sold in Union: February 24th to March 2nd

Homes Just Sold in Union: February 24th to March 2nd - March 3, 2026

Union had only 1 sale during the week of Tuesday, February 24 to Monday, March 2, including and it was a single family home for sale with a list price ... continue reading
New Homes with Master Bedrooms on the 1st Floor in Union: February 7th to February 13th

New Homes with Master Bedrooms on the 1st Floor in Union: February 7th to February 13th - February 14, 2026

Union had only 1 new home for sale with a master bedroom on the first floor during the month of Saturday, February 7 to Friday, February 13, and it ... continue reading
New Homes For Sale This Week in Union: February 6th to February 12th

New Homes For Sale This Week in Union: February 6th to February 12th - February 13, 2026

Union had 2 new homes for sale during the week of Friday, February 6 to Thursday, February 12, including including 2 single family homes for sale with an average list ... continue reading
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