House Prices

House Prices & Home Values Union, IL 2026


Average Data

average house price$758,700
average size per house4057 ft²
average price per ft²188 $ / ft²

06/05/2026 - The value range (VR) for house prices in Union, IL is $200/ sqft to $200/ sqft. An average home with 4057 sqft costs approximately $811,400 to $811,400. Union, IL includes 1 ZIP codes and it is located in McHenry county. The lowest prices are found in ZIP 60180, while the highest are in ZIP 60180. The average price per sqare feet is $188. Our analysis is based on 5 property listings.

Avergage prices by ZIP codes Union

60180191 $ / ft²




Historical development of home values in Union

Year Estimated value (USD) Change vs. 2025
2010 $352,354 -53.6%
2011 $338,728 -55.4%
2012 $337,816 -55.5%
2013 $350,443 -53.8%
2014 $367,869 -51.5%
2015 $386,749 -49.0%
2016 $406,932 -46.4%
2017 $428,896 -43.5%
2018 $452,608 -40.3%
2019 $473,594 -37.6%
2020 $498,077 -34.4%
2021 $566,509 -25.3%
2022 $660,422 -13.0%
2023 $696,446 -8.2%
2024 $736,736 -2.9%
2025 $758,700 0.0%

Graph: estimated home values in Union over time (USD)



Example: 100% financing house in Union

Loan amount: $758,700

Interest rate: 6.00%

Fixed monthly payment: $4,548.79

Breakdown in the 1st month:
Interest portion: $3,793.50  –  Principal portion: $755.29

Yearly breakdown (100% financing)

Year Interest per year ($) Principal per year ($) Remaining balance at year-end ($)
1 $45,268.55 $9,316.92 $749,383.08
2 $44,693.91 $9,891.57 $739,491.50
3 $44,083.82 $10,501.66 $728,989.84
4 $43,436.10 $11,149.38 $717,840.46
5 $42,748.43 $11,837.05 $706,003.41
6 $42,018.34 $12,567.14 $693,436.27
7 $41,243.23 $13,342.25 $680,094.02
8 $40,420.31 $14,165.17 $665,928.85
9 $39,546.63 $15,038.85 $650,890.00
10 $38,619.07 $15,966.41 $634,923.60
11 $37,634.30 $16,951.18 $617,972.41
12 $36,588.78 $17,996.69 $599,975.72
13 $35,478.79 $19,106.69 $580,869.03
14 $34,300.33 $20,285.15 $560,583.88
15 $33,049.18 $21,536.29 $539,047.58
16 $31,720.87 $22,864.61 $516,182.98
17 $30,310.63 $24,274.84 $491,908.13
18 $28,813.41 $25,772.06 $466,136.07
19 $27,223.85 $27,361.63 $438,774.44
20 $25,536.24 $29,049.23 $409,725.21
21 $23,744.55 $30,840.93 $378,884.28
22 $21,842.35 $32,743.13 $346,141.16
23 $19,822.83 $34,762.65 $311,378.50
24 $17,678.74 $36,906.74 $274,471.77
25 $15,402.42 $39,183.06 $235,288.70
26 $12,985.69 $41,599.79 $193,688.92
27 $10,419.91 $44,165.57 $149,523.34
28 $7,695.87 $46,889.61 $102,633.74
29 $4,803.82 $49,781.66 $52,852.08
30 $1,733.40 $52,852.08 $0.00

Note: The calculation is based on a standard annuity mortgage with a fixed monthly payment over the entire term. Extra payments, interest rate changes, and additional purchase costs (e.g. taxes, notary fees) are not included.


How to sell in Union, IL


1500 sqft3900 sqft
Ø selling price$341,220$725,869
Ø fast selling$310,200$653,282
Ø high price sale$372,241$798,455

In 2026, houses in Union, IL will be offered at an average price of $188 per square foot. A 1,500 sqft home priced at $341,220 is 21.92% more expensive per square foot than a 3,900 sqft home priced at $725,869. Home prices in Union, IL vary significantly depending on the neighborhood and location. For a quick sale, a 2,700 sqft home should be listed at around $502,525. Sellers who can wait longer may achieve a higher price of up to $614,196.


Discover Union, Illinois

Discover the small-town charm of Union, Illinois in the heart of McHenry County.

Iconic Attractions

The world-class Illinois Railway Museum anchors Union, IL with vintage trains, trolley rides, and seasonal events that delight all ages.
History lovers also explore the McHenry County Historical Society Museum, showcasing local heritage, artifacts, and engaging exhibits.
From railfan weekends to family festivals, you?ll always find memorable things to do in Union, IL.

Location & Outdoors

Union, IL sits just off US Route 20 near I-90, making it an easy day trip from Chicago, Rockford, or the northern suburbs.
Scenic farm roads, prairie vistas, and nearby trails invite cycling, birding, and peaceful drives through classic northern Illinois landscapes.
Outdoor enthusiasts can explore local parks and waterways while photographing historic barns and wide Midwestern skies.

Dining, Shopping & Events

In the historic downtown, cozy eateries, coffee spots, and antique shops offer friendly service and small-town flavor.
Community events, car shows, and holiday celebrations add to Union?s welcoming vibe and make it a fun destination for families and couples.
Whether you?re planning a rail-themed getaway, a countryside weekend, or a quick day trip to Union, IL, you?ll find authentic charm, easy access, and plenty to explore year-round.



FAQ – Home Values in Union

What is the median home value in Union in 2026?

In 2026, the typical home value in Union is about $758,700 for an average home size of 4057 square feet. This corresponds to an average price of roughly $188 per square foot.

What is the average cost per square foot in Union?

In 2026, homes in Union sell for an average of around $188 per square foot, with a typical range between $200 and $200 per square foot, depending on the property’s location, condition, and lot size.

What is the average home size in ?

The average home size in Union is about 4057 square feet, with an estimated 2026 value around $758,700.



Locations close to Union, IL

Villa Park, IL214 $ / ft²
Wayne, IL146 $ / ft²
West Chicago, IL228 $ / ft²
Sycamore, IL127 $ / ft²
South Elgin, IL148 $ / ft²
Schiller Park, IL181 $ / ft²
  imprint  Privacy