Union
What’s happening
Weather
Forecast →Upcoming events
Put the next local happening — a market, a meeting, a concert — on the map.
Local news
Headlines via Google News · Articles belong to their publishers.
The Union album
Outdoors in Union
Parks & trails →Know a trail or park that’s missing? Anyone can add it to OpenStreetMap, and it shows up here on the next refresh.
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
About Union
Village in McHenry County, Illinois, United StatesUnion is a village in McHenry County, Illinois, United States. The population was 551 at the 2020 census.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
Town numbers
Housing in Union
The typical Union home is worth about $439,000, up 7.9% in a year, 48% above the Illinois typical home.
Only 2 sales in May 2026, too few for a market read. The typical value is the steadier guide.
Safety in Union
Not graded
Union has fewer than 1,000 residents. At that size one or two incidents swing the numbers so much that a grade wouldn't be fair, so we show the counts instead.
Work & commute in Union
Full picture →Most working residents leave Union for work: only 2% work in town. The top destinations are Chicago (14%), Schaumburg (6%) and Huntley (6%). Half commute less than 29 miles.
Health in Union
Compared with Illinois
of 32 measures CDC estimates. The other 19 are too close to call.
What stands out
Care nearby
Natural hazards in Union
Expected storm and flood damage is higher than in 41% of U.S. communities.
Climate in Union
Full climate →Union has cold, snowy winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 14°, and about 31 inches of snow falls in a normal winter.
Libraries near Union
See all →Where Union is
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Location map